日本费加罗FIGARO氢气传感器 TGS821气体检测仪 气体泄漏报警器
费加罗可燃气体传感器
费加罗可燃气体传感器
经过市场40余年运用的历史发展，气体传感器和气体报警器都得到了持续的改进。
因此，如今的气体报警器可以做到免维护运行，质保期可达5年。
通过使用内置过滤器来提高传感器耐久性以及防止气体引起误报警的方法已经成为标准做法。
所有费加罗可燃气体传感器的家用气体报警器都有一个内置过滤器。
过滤材料的使用量满足欧洲标准中设计所要求的响应时间（≤30s）。
费加罗可燃气体传感器还具有一下特点：
每一只传感器，都在严控温湿度的条件下生产制造，对使用对象气体就行100%全检。
有可追溯的制造记录，传感器的制造记录可以通过生产批号进行追溯。
面向精准客户要求，费加罗推出了LPM2610,NGM2611,CGM6812等几款预校准模块，这些模块出厂前已经经过严格控制条件下的预校准。
4.符合ROHS与REACH标准。
费加罗气体传感器符合限制有害物质指令（ROHS）以及化学品注册，评估，授权和限制令（REACH）等环保规范。
低功耗。
费加罗持续致力于研究低功耗的传感器，由于传感器芯片的小型化，TGS2610/2611的功耗仅有280mw。
长寿命。
TGS6810/6812传感器的预期寿命在10年左右。
tgs2602.pdf tgs2000 系列传感器产品介绍，空气污染、臭味检测用说明书
TGS2602 空气污染、臭味检测用特点： 应用：・低功耗 ・空气清新机、换气扇控制 ・对VOC 、氨气、硫化氢有高灵敏度 ・脱臭器控制・长寿命、低成本 ・室内空气监视器・可利用简单电路下图是典型的香烟烟雾灵感度特性。
香烟的根数是约10平米的房间吸烟情况下的数值。
这里的纵轴也用传感器电阻比Rs/Rs(Air)来表示， 这里的Rs ､Rs(Air)定义如下： Rs ＝香烟的烟雾存在时的传感器电阻值 Rs(Air) ＝清洁大气中的传感器电阻值 香烟灵敏度特性：敏感素子由集成的加热器以及在氧化铝基板上形成的金属氧化物半导体构成。
当可检知的气体存在时，空气中该气体的浓度越高，传感器的电导率就越高。
使用简单的电路就可以将这种电导率的变化变换为与气体浓度对应的输出信号。
TGS2602不仅对香烟的烟雾或烹调臭味有很高的灵敏度，而且对硫化氢、VOC 、氨气有高灵敏度。
这种传感器是利用相对值检知来实现更接近人类感觉的控制，即以空气清洁的时候为基准，通过传感器电阻值比空气清洁时变化了多少来检测空气的污染程度。
下图是典型的灵敏度特性，全部是在标准试验条件下得出的结果。
（请看背面） 纵轴以传感器电阻比Rs/Rs(Air)表示，Rs ､Rs(Air)的定义如下： Rs ＝各种浓度气体中的传感器电阻值Rs(Air)＝清洁大气中的传感器电阻值灵敏度特性：规格： 结构及尺寸：型 号 TGS2602素子类型 26系列 标准封装 金属 对象气体氢气、酒精等检测范围 1 ～10 ppm标准回路加热器电压 VH 5.0±0.2V DC/AC 回路电压 VC 5.0±0.2V DC Ps 15mW ≦ 负载电阻 RL 可变Ps 15mW ≦标准试验加热器电阻 RH59 Ω（室温）加热器电流 IH 56mA 加热器功耗 PH 280mW VH ＝5.0V DC/AC 传感器电阻Rs10～100 K Ω（空气中） 灵敏度(Rs 的变化率)0.15～0.5Rs(乙醇：10 )Rs(Air)标准试验试验气体条件 20±2℃，65±5％RH 回路条件 VC ＝5.0±0.2V DCVH ＝5.0±0.2V DC/AC试验前预热时间 96小时以上功耗（Ps ）值可用下式计算： 传感器电阻（Rs ），可根据VOUT测定值，用下式计算：为提高性能，本规格书将不事先预告而变更。
日本费加罗Figaro氧气传感器
日本费加罗Figaro氧气传感器广州南创陈工FIGARO是一家专业生产半导体气体传感器的公司，1962年发明全球第一款半导体产品，目前全球第一。
FIGARO的产品远销38个国家，在多个国家设立了分支机构或办事处，生产基地遍布美洲、东欧、中国等地；并在中国设立了广州南创传感器事业部，可为用户的实验和生产提供最佳的服务与解决方案。
半导体气体传感器采用金属氧化物半导体烧结工艺，对被检测的检测气体具有灵敏度高、响应时间短、成本低、长期稳定性好等优点。
我们的产品包括可燃气体、有毒气体、空气质量、一氧化碳、二氧化碳、氨气、汽车尾气、酒精等传感器元件、传感模块等，以及各种气体传感器的配套产品。
目前已经被广泛应用于家用燃气报警器、工业有毒气体报警器、空气清新机、换气空调、空气质量控制、汽车尾气检测、蔬菜大棚、酒精检测、孵化机械等。
日本费加罗Figaro氧气传感器KE-25KE-50信息日本费加罗Figaro氧气传感器KE-25KE-50性能：测量范围：0-100％O2精度：氧气传感器KE-25：±1％（全量程）；氧气传感器KE-50：±2％（全量程）工作温度：5～40℃储存温度：-20～＋60℃响应时间：KE-25：14±2秒；KE-50：60±5秒初始输出：KE-25：10.0–15.5mv；KE-50：47.0-65.0mv期望寿命：KE-25：5年；KE-50：10年日本费加罗Figaro氧气传感器KE-25KE-50特性：长寿命（KE-25-5年，KE-50-10年）不受CO2，CO，H2S，NOx，H2影响低成本，在常温下工作信号输出定，无需外部电源不需加热以上日本费加罗Figaro氧气传感器技术参数以《OIML60号国际建议》92年版为基础，最新具体变化可查看《JJG669—12FIGARO广州南创传感器事业部检定规程》产品特性描述：氧气传感器KE-25KE-50属于半导体气体传感器不受CO2，CO，H2S，NOx，H2影响，氧气传感器KE-25KE-50低成本在常温下工作信号输出定，无需外部电源不需加热；精度氧气传。
可燃气体探测器安装使用说明书-上海松江费加罗电子有限公司
SFJ-11A/T 系列点型可燃气体探测器 安装使用说明书1、 产品特点：采用日本费加罗技研株式会社的半导体传感器，具有功耗低、使用年限长、稳定性好和不需调零或校准等特点。
2、 适用范围：适用于存在可燃气体泄漏危险的固定场所（有防爆要求的场所除外)。
注意： 本产品不适用于存在硅蒸汽或长期存在浓度较高的可燃气体、有害气体的环境！3、 主要技术指标：工作电压：DC24V ； （最低允许工作电压：DC12V ） 适用气种和报警值： 天然气（甲烷）：10%LEL ；适用环境：室内使用，环境温度 -10～55℃，相对湿度＜95%；功 耗：监视状态：＜1W(约0.5W)，报警状态：＜1W ； 响应时间：≤30s ； 预热时间：180s贮存温度：-25～70℃ 使用年限：5年(仅限于正常使用环境和条件下) 尺寸及净重： Ф107X43mm ，110g 联动功能(选配)：⑴ 联动关断紧急切断阀： 可联动口径50mm 及其以下的直流电磁切断阀（布线距离10米以内）； ⑵ 输出无源常开接点信号：接点容量：DC24V/1A4、安装接线说明：4.1 探测器可以吸顶安装或壁挂安装，壁挂安装时应安装在距所保护空间的顶部30厘米以内；4.2 应避免将探测器安装在空气流动过大的地方，并应使探测器距可能的泄漏点的水平距离在3～4米的范围以内。
4.3 应先安装探测器底座，可将底座固定于86式预埋盒或用膨胀螺丝固定于墙上或顶棚上；壁挂式安装时，应注意使底座的方向指示箭头朝上。
然后将连接线正确、可靠地接入底座的相应端子，最后将探测器可靠地拧入底座。
吸顶式安装壁挂式安装（注意底座方向指示箭头朝上）4.4 接线说明： ⑴、布线要求：所布电源线的线径应保证在每个探测器端的电压绝对不低于12V （一般应按15V 计算），这应该根据布线距离和总消耗电流计算确定（具体计算方法参见附录1）；所布的信号总线（S+）和联动接线等应有足够的抗拉性，一般其截面积应不低于1.2 mm 2。
氢气H2检测仪报警器探测器探头
氢气H2检测仪报警器探测器探头氢气H2泄露检测探测器产品适用于各种环境和特殊环境中的氢气H2气体浓度和泄露，在线检测及现场声光报警，对危险现场的作业安全起到了预警作用，此仪器采用进口的电化学传感器和微控制器技术，具有信号稳定，精度高，重复性好等优点，防爆接线方式适用于各种危险场所，并兼容各种控制器，PLC,DCS等控制系统，可以同时实现现场报警和远程监控，报警功能，4-20mA标准信号输出，继电器开关量输出。
氢气H2气体传感器参数●工作电压DC5V±1%/DC24±1%波特率9600●测量气体氢气H2气体●检测原理电化学●采样精度±2%F.S●响应时间<30S●重复性±1%F.S●工作湿度10-95%RH，(无冷凝)●工作温度-30～50℃●长期漂移≤±1%（F.S/年）●存储温度-40～70℃●预热时间30S●工作电流≤50mA●工作气压86kpa-106kpa●安装方式7脚拔插式●质保期1年●输出接口7pIN●外壳材质铝合金●使用寿命2年●外型尺寸●(引脚除外)33.5X31 21.5X31●测量范围详见选型表●输出信号TTL(标配)0.4-2.0VDC(常规)/4-20mA ●数字信号格式数据位:8;停止位:1;校验位:无;氢气H2检测仪报警器探测器探头产品特性：①进口电化学传感器具有良好的抗干扰性能，适用寿命8年。
②采用先进微处理技术，响应速度快，测量精度高，稳定性和重复性好。
③检测现场具有具有现场声光报警功能，气体浓度超标即时报警，是危险场所作业的安全保障。
4现场带背光大屏幕LCD显示，直观显示气体浓度，类型，单位，工作状态等。
5独立气室，更换传感器无须现场标定，传感器关键参数自动识别。
6全量程范围温度数字自动跟踪补偿，保证测量准确性。
氢气H2检测仪报警器探测器探头技术参数：检测气体：空气中的氢气H2气体检测范围：0~50ppm,0~500ppm,0~1000ppm可选。
费加罗TGS681x催化燃烧式气体传感器应用手册说明书
TGS681x 气体传感器是采用独一无二的失效保护理念设计而成的非常独特的催化燃烧式传感器。
本手册提供了关于使用费加罗的独特催化型传感器TGS6810和TGS6812的气体检测器在设计和制造方面的重要技术建议。
目 录概要.....................................................................................................................................2电路设计 基本电路................................................................................................................2 传感器故障............................................................................................................3 加热过程中的报警预防......................................................................................3 报警延迟电路.......................................................................................................3印刷电路板和壳体设计 传感器的位置依赖性...........................................................................................3 快速响应之壳体设计 (4)制造工艺 传感器操作和保管...............................................................................................4 印刷电路板装配...................................................................................................4 传感器装配............................................................................................................4 预热...................................................................................................4 校正........................................................................................................................5 最终装配................................................................................................................6 气体调校................................................................................................................6 成品的保管 (6)采用TGS681x的可燃气体检测器应用手册重要提示：费加罗传感器的使用条件将因不同客户的具体运用不同而不同。
CO检测报警仪、可燃气体测爆仪及氢气检漏仪的使用方法
CO气体检测报警仪、可燃气体测爆仪及氢气检漏仪的使用方法一、一氧化碳气体检测报警仪（简称CO测报仪）1、一氧化碳气体检测报警仪的测定范围是CO含量0—2000PPM，开始声响报警范围为0—300PPM可调，一般调整到CO含量达到50PPM开始报警；2、焦炉煤气与空气混合时的爆炸浓度范围是：混合物中焦炉煤气含量4.7—38%。
即爆炸下限为4.7%，混合物中焦炉煤气含量低于4.7%不会爆炸；爆炸上限为38%，混合物中焦炉煤气含量高于38%不会爆炸；3、焦炉煤气中CO的含量在7%左右，即其中CO含量为70000PPM。
当焦炉煤气与空气混合时，如焦炉煤气含量为4.7%，则混合物中CO含量应为：70000×4.7%=3290PPM 。
如混合物中CO含量为200PPM，则其中焦炉煤气含量应为：200/70000=0.286%；4、焦炉煤气与空气的混合物中，焦炉煤气含量为4.7%时，混合物中CO含量为70000×4.7%=3290PPM，大于一氧化碳气体检测报警仪的测定范围———2000PPM。
所以一氧化碳气体检测报警仪的主要作用是防止CO中毒，而不是测定气体是否会爆炸。
但是对于焦炉煤气与空气的混合物来说，如果其中CO含量低于2000PPM的话，它肯定低于爆炸下限，所以一氧化碳气体检测报警仪在一定条件下可以用来确定可燃气体混合物是否能够爆炸（对于液化石油气就不行）；5、一氧化碳气体检测报警仪不可长期工作在CO含量较高的条件下，以免仪器中毒失灵。
二、可燃性气体检测报警仪（简称“测爆仪”）1、测爆仪能检测空气中可燃气体爆炸下限浓度的百分比含量，其测定范围是爆炸下限浓度的0—100%，开始声响报警范围为爆炸下限浓度的5—60%可调，一般调整到爆炸下限浓度25%开始报警；2、焦炉煤气与空气混合物的爆炸下限为4.7%，这相当于爆炸下限浓度的100%。
由此可知，当测爆仪上的指字为15%时，混合物中含焦炉煤气为：4.7%×15%=0.705%三、氢气检漏仪⑴SQJ—ⅠA型1、SQJ—ⅠA型氢气检漏仪能检测空气中氢气爆炸下限浓度的百分比含量，其检测范围是爆炸下限浓度的0—100%，氢气与空气混合物的爆炸下限为4%，如果按ppm计，其检测范围是0~40000ppm。
日本费加罗FIGARO TGS5042民用一氧化碳传感器
Technical Information for Carbon Monoxide SensorsF igaro’s TGS5042 is a battery operable electrochemical sensor which offers several advantages over traditional electrochemical sensors. Its electrolyte is environmentally friendly, it poses no risk of electrolyte leakage, can detect concentrations as high as 1% CO, operates in a range from -5˚ and +55˚C, and it has lower sensitivity to interference gases. With a long life, good long term stability, and high accuracy, this sensor is the ideal choice for CO detectors with digital display. OEM customers will find individual sensors data printed on each sensor in bar code from, enabling users to skip the costly gas calibration process and allowing for individual sensor tracking. TGS5042 utilizes a standard AA battery-sized package.S p e c i f i c a t i o n s P a g e Features..................................................................................................2 Applications...............................................................................................2 Structure...........................................................................................2 Basic Measuring Circuit...........................................................................2 Operating Conditions & Specifications...................................................3 Mechanical Strength..............................................................................3 Dimensions...................................................................................................3Operation Principle ......................................................................................................4Basic Sensitivity Characteristics Sensitivity to Various Gases............................................................5 Temperature and Humidity Dependency.............................................5 Gas Response Pattern.................................................................................6 Repeatability.............................................................................6 Influence of Storage...................................................................................6 Normal Operation Test.....................................................................................7 Sensitivity Test...................................................................................7Reliability Interference Gas Test......................................................................................8 Long-Term Stability................................................................................9 Corrosion Test...........................................................................................9 Variable Ambient Temperature Test................................................................9 Humidity Test.............................................................................................10 Stability Tests..................................................................................................11 Sequential Test...........................................................................................11 Dust Test................................................................................................12 Water Loss Test.......................................................................................12Marking ..........................................................................................................................12Cautions .......................................................................................................13Appendix . (14)a n I S O 9001 c o m p a n yIMPORTANT NOTE: OPERATING CONDITIONS IN WHICH FIGARO SENSORS ARE USED WILL VARY WITH EACH CUSTOMER’S SPECIFIC APPLICATIONS. FIGARO STRONGLY RECOMMENDS CONSULT-ING OUR TECHNICAL STAFF BEFORE DEPLOYING FIGARO SENSORS IN YOUR APPLICATION AND, IN PARTICULAR, WHEN CUSTOMER’S TARGET GASES ARE NOT LISTED HEREIN. FIGARO CANNOT ASSUME ANY RESPONSIBILITY FOR ANY USE OF ITS SENSORS IN A PRODUCT OR APPLICATION FORWHICH SENSOR HAS NOT BEEN SPECIFICALLY TESTED BY FIGARO.TGS5042 is a UL recognized component in accordance with the requirements of UL2034. Please note that component recognition testing has confirmed long term stability in 15ppm of carbon monoxide; other characteristics shown in this brochure have not been confirmed by UL as part of component recognition.1. Specifications1-1 Features* Battery operable* High repeatability/selectivity to carbon monoxide * Linear relationship between CO gas concentration and sensor output* Simple calibration* Long life* UL recognized component* Meets UL2034, EN50291, and RoHS requirements 1-2 Applications* Residential and commercial CO detectors* CO monitors for industrial applications* Ventilation control for indoor parking garages* Fire detection1-3 StructureFigure 1 shows the structure of TGS5042. The gas sensing layer is sandwiched between a stainless steel washer (counter electrode) and a stainless steel cap (working electrode), together with gas diffusion control stainless film and backing layers. This assembly is placed in the compartment of the stainless steel can. Water is stored in the bottom compartment and a charcoal filter is installed inside the stainless steel cap.1-4 Basic measuring circuitF igure 2 shows the basic measuring circuit of TGS5042. The sensor generates a minute electric current which is converted into sensor output voltage (Vout) by an op-amp/ resistor (R1) combination.Figaro recommends the following electrical parts:R1 : 1MΩC1 : 1µFIC : AD708An additional resistor or F ET is required to prevent polarization of the sensor when circuit voltage is off. NOTE: When voltage is applied to the sensor output terminal, the sensor may be damaged. Voltage applied to the sensor should be strictly limited to less than ±10mV.1-5 Operating conditions & specifications (Table 1)Figure 1 - Sensor structureFigure 2 - Basic measuring circuit(Including equivalent circuit)Cap /Working electrodeVoutNOTE 1: Sensor output in air under operating conditionsNOTE 2:If the water in the reservoir should freeze very rapidly (typically occurs only under artifically created conditions), irreversible change to sensor characteristics would occur. To avoid this risk, the sensor is recommended to be positioned with its cap (working electrode) facing up. NOTE 3: Please contact Figaro for more information if the required temperature range would exceed the specified limits.Table 1 - Operating conditions and specifications1-6 Mechanical strengthThe sensor shall have no abnormal findings in its structure and shall satisfy the above electrical specifications after the following performance tests: Withstand force -withstand force of 10kg (cap from metal can) along a vertical axisVibration - frequency--10~500Hz (equiv. to 10G), duration - 6 hours, x-y-z directionShock - acceleration-100G, repeat 5 times 1-7 Dimensions (see Fig. 3)Figure 3 - DimensionsAll sensor characteristics shown in this brochu re represent typical characteristics. Actu al characteristics vary from sensor to sensor and from production lot to production lot. The only characteristics warranted are those shown in the Specification.NOTE: The sensor can be supplied with lead pins. Please refer to the Appendix for detailsTop viewBottom viewSide view2. Operation PrincipleThe electrolyte of TGS5042 is a very low concentra-tion of mixed/prepared alkaline electrolyteconsisting of KOH, KHCO 3, and K 2CO 3. Themixed alkaline electrolyte acts as a buffer solution with a pH value maintained between 7~10. When CO passes through the backing layer and reaches to the working electrode, electrons are generated resulting from the reaction between CO and anionsin the electrolyte such as OH -, HCO 3-, and CO 32-(see equations 1a~1c ). By creating a short circuitbetween the working and counter electrodes with external wiring, electrons move to the counter electrode through the external wiring. At that point, the consumed anions in the electrolyte at the working electrode are replenished and move to the electrolyte by the reaction of CO 2, water, and electrons as shown in equations 2a~2c. The total reaction is expressed as shown in equation 3.A linear relationship exists between the sensor'selectric current and CO concentration (see equation 4). By calibrating the sensor with a known concentration of CO gas, the output current of the sensor can then be used to quantitatively determine CO concentration.Since, unlike conventional dry batteries, there is no consumption of active materials or of the electrodes, TGS5042 possesses excellent long-term stability for its output signal and enables maintenance-free operation. Furthermore, the sensor's self-generating output current makes it ideal for usage in battery-operated CO detectors.Figure 4 - Operation principleFigure 5 - Schematic diagram of TGS5042operating principleSeparator immersed in liquid alkaline electrolyteWorking electrode (Anodic reaction)CO + 2OH - → CO 2 + H 2O + 2e - (equation 1a )CO + 2HCO 3- → 3CO 2 + H 2O + 2e - (equation 1b )CO + CO 32- → 2CO 2 + 2e - (equation 1c )Counter electrode (Cathodic reaction)1/2O 2 + H 2O + 2e - → 2OH - (equation 2a ) 1/2O 2 + 2CO 2 + H 2O + 2e - → 2HCO 3- (equation 2b ) 1/2O 2 + CO 2 + 2e - → CO 32- (equation 2c )Total reactionCO + 1/2 O 2 → CO 2 (equation 3)Theoretical output current valueI = F x (A/σ) x D x C x n (equation 4) where :F : Faraday constant A: Surface area of diffusion filmD: Gas diffusion co-efficient C: Gas concentration σ: Thickness of diffusion filmn: Number of reaction electrons深圳市深国安电子科技有限公司3. Basic Sensitivity Characteristics 3-1 Sensitivity to various gasesF igure 6 shows the sensor’s sensitivity to various gases. The Y-axis shows output current (Iout/µA) in each gas. The output current is linear to CO concen-tration, with a deviation of less than ±5% in the range of 0~500ppm. Cross sensitivity data for other gases than those in Figure 6 are tabulated in Table Y.3-2 Temperature and humidity dependencyF igure 7a shows the temperature dependency of TGS5042 under a constant humidity of 50%RH. The Y-axis shows the ratio of output current in 400ppm of CO at various temperatures (I) to the output current in 400ppm of CO at 20˚C/50%RH (Io). Temperature dependency is based on the difference in the catalytic reaction rate on the electrodes, and it can be simply compensated by utilizing a thermistor. This linear relationship between I/Io and CO concentration is constant regardless of CO concentration range, according to the sensor's operating principle.F igure 7b shows the humidity dependency of TGS5042 under constant temperatures of 20˚C and 50˚C. The Y-axis shows the ratio of output current in 400ppm of CO at various relative humidities (I) to the output current in 400ppm of CO at 20˚C/50%RH (Io). This data demonstrates that humidity dependency is negligible as temperature varies.Figure 6 - Sensitivity to various gasesFigure 7a - Temperature dependency at 400ppm CO/50%RH(Io=sensor output current at 20˚C)Figure 7b - Humidity dependency at 400ppm CO(Io=sensor output current at 50%RH)0.00.51.01.52.020406080100Relative Humidity (%)Note : The figures in this table are typical values and should not be used as a basis for cross calibration. Cross sensitivity for various gases may not be linear and should not be scaled. All data based on a 4 minute exposure. For some gases, filter saturation and gas breakthrough mayoccur if gas is applied for a longer time period.0.00.51.01.52.0-10102030405060Temperature (˚C)3-3 Gas response patternF igure 8 shows the gas response pattern of the output signal when the sensor is placed into 30, 70, 150 and 400ppm of CO and then returned to normal air. The response time to 90% of the saturated signal level is within 60 seconds, and the recovery of the signal back to 90% of the base level is within 120 seconds. This data demonstrates that TGS5042 possesses sufficient response speed for meeting UL requirements for CO detectors.3-4 RepeatabilityF igure 9 shows the pattern of the output signal when the sensor is repeatedly exposed to 400ppm of CO at a constant interval of 240 seconds. The data demonstrates extremely high reproducibility of the output signal, the deviation being less than ±5%.3-5 Influence of storageF igure 10 shows the initial action of the sensor's output current signal in fresh air. F or the purpose of this test, sensors were stored for more than six months under two separate conditions between the working and counter electrodes: in short-circuited condition, and in open-circuited condition. The chart illustrates the behavior of sensor output current for each group just after installation into the operating circuit. The output current signal of sensors stored in a short-circuited condition reaches its saturated level quickly, while those stored with an open-circuit exhibit much slower behavior. Since sensors are shipped in an open-circuit condition, stabilization time of one hour (typical) is recommended. If an anti-polarization circuit is used (see Item 2-5 in Application Notes for TGS5042), placing the sensor onto the pcb for one hour should be sufficient to stabilize the output. If no anti-polarization circuit is used, placing the sensor into the detector circuit and powering the circuit for about one hour should be sufficient to stabilize sensor output.Figure 8 - Response patternFigure 9 - Repeatability (in 400ppm of CO)0.00.20.40.60.81.00500100015002000Time (sec.)-0.20.00.20.40.60.81.00500100015002000Time (sec.)Figure 10 - Influence of storage(in fresh air)Figure 11a shows the result of the “Normal Operation Test” required by UL2034, Sec. 35.3 where the sensor is exposed to 600ppm of CO for 12 hours at 20˚C/40%RH. Stable output current signal can be seen throughout the exposure.In addition, F igure 11b shows the CO sensitivity characteristics of the sensor before, during, and after the Normal Operation Test, demonstrating that TGS5042 is hardly influenced by exposure to high concentrations of CO.3-7 Sensitivity testFigure 12a shows the results of the “Sensitivity Test” as required by UL2034, Sec. 38. Under this test, the sensor was exposed to 30, 70, 150 and 400ppm of CO at 20˚C/40%RH. The period of exposure was varied by concentration, corresponding with the maximum time in which a CO detector should generate an alarm for the subject concentration. Throughout the test exposures, TGS5042 displayed a reasonable and stable output current signal.Figure 11a - Normal operation test (CO 600±30ppm for 12 hours at 20˚C/40%RH) 0.00.51.01.5Figure 11b - Normal operation test(20˚C/40%RH)0.20.40.60.81Figure 12a - Sensitivity test(20˚C/40%RH)In addition, Figure 12b indicates the CO sensitivity characteristics of the sensor before, during, and after the Sensitivity Test, demonstrating the excellent reproducibility of TGS5042's CO sensitiv-ity characteristics.4. ReliabilityT ests conducted in this section demonstrate that TGS5042 can meet the requirements of various testing standards without incurring adverse long term effects from such tests.4-1 Interference gas testFigure 13a shows the results of testing the TGS5042 sensor for durability against various interference gases as specified by UL2034, Sec. 39. The test was conducted by exposing the sensor to each gas shown in Figure 13a (starting with CO 30ppm) for two hours, then removing the sensor to fresh air for just one hour, and followed by inserting the sensor into the next gas. This procedure was repeated for the full range of gases shown in Figure 13a. Because the sensor is exposed to each of the test gases consecutively, to some small extent the effect of the previous test gas may affect subsequent tests for a short period. However, despite the short-term effects of such gases remaining after exposure, the sensor still shows significantly less sensitivity to each test gas when compared to 30ppm of CO, and CO sensitivity remains unaffected.In addition, F igure 13b shows the CO sensitivity characteristics of the sensor before and after this test, further demonstrating the excellent reproducibility of the CO sensitivity characteristics of TGS5042, demonstrating its durability against the interference gases listed in the requirements of UL2034, Sec. 39.Fig. 12b - Sensitivity test(20˚C/40%RH)Figure 13a - Interference gas test(20˚C/40%RH)-0.020.020.040.060.08AC O30p pM et h an e500ppB ut a ne300p pH ep t an e500ppE th yl ac et a te200p pI P A200ppC O25000ppN H3100p pE th an ol200p pT ol u en e200ppT ri c hl o ro et h an e200ppA ce t on e200ppC O30p p AFigure 13b - Interference gas test(20˚C/40%RH)深圳市深国安电子科技有限公司4-2 Long-term stabilityigure 14 shows long-term stability data for TGS5042. Test samples were stored in natural clean air under a short-circuit condition and measured at various intervals as dictated by the standard test conditions of UL2034, Sec. 38. The Y-axis shows the ratio of output current in 300ppm of CO at any point in time (I) over output current in 300ppm of CO on the first day of the test (Io). This chart demonstrates very stable characteristics with a variation of less than ±15% for more than 7 years.4-3 Corrosion testTo demonstrate the durability of TGS5042 against corrosion, samples were subjected to test conditions called for by UL2034, Sec.58-Corrosion Test. Over a three-week period, a mixture of 100ppb of H2S, 20ppb of Cl2, and 200ppb of NO2 was supplied to the sensors at a rate sufficient to achieve an air exchange rate of five times per hour. Figure 15 shows the CO sensitivity characteristics before and after exposure in the above conditions, demonstrating that TGS5042 is hardly influenced by such corrosive gases. In addition, the sensor's stainless steel housing did not show any sign of corrosion as a result of this test.4-4 Variable ambient temperature testTo demonstrate the ability of TGS5042 to withstand the effects of high and low temperature, the “Variable Ambient Temperature Test” of UL2034, Sec. 45 was conducted.(1) Operation in high and low temperature test Figure 16a shows the results for the “Operation in High and Low Temperature Test” of UL2034, Sec.45.1. The sensor was exposed to environments of 0˚C/15%RH and 49˚C/40%RH for at least three hours each, with measurements taken before and during the exposure in accordance with the test conditions of UL2034, Sec. 38. By plotting the output current values from these test measurements atop the data taken prior to this test at a constant 50%RH (representing standard temperature dependency), it can be seen that the test data are still in line with data taken at a constant RH. The conclusion which can be drawn is that, regardless of exposure to extremes of temperature and humidity, the sensor's output is not affected by humidity. As a result, TGS5042 can meet the requirements of UL2034, Sec. 45.1 by utilizing a simple temperature compensation method.Figure 14 - Long term stabilityFigure 15 - Durability against corrosionFigure 16a - Operation in high and low temperature (all data at 50%RH except Sec. 45.1 test points) 0.00.51.01.52.02.53.0Time (days)(2) Effect of shipping and storageTo verify the effects of shipping and storage, the sensor was tested under the conditions of UL2034, Sec. 45.2. Test samples in a short-circuited condition were subjected to 70˚C for 24 hours, allowed to cool to room temperature for 1 hour, subjected to -40˚C for 3 hours, and then allowed to warm up to room temperature for 3 hours. Figure 16b shows the CO sensitivity characteristics before and after the test, demonstrating that TGS5042 meets the requirement of UL2034, Sec. 45.2.4-5 Humidity testF igure 17a shows the results of testing the sensor under UL2034, Sec. 46A. The sensor was exposed in an atmosphere of 52±3˚C/95±4%RH for a period of 168 hours, returned to normal air for 2 days, then followed by 168 hours exposure at 22±3˚C/10±3%RH. The data demonstrates the stable characteristics in both low and high humidity conditions.Figure 17b shows data taken prior to the above test at a constant relative humidity of 50%. These curves represent the typical temperature dependency of the sensor. When plotting measurements taken at the environmental extremes specified on UL2034, Sec. 46A (52±3˚C/95±4%RH and 22±3˚C/10±3%RH) onto the temperature dependency curves, it can be seen that measurements taken at these extreme conditions still fall in line with the temperature dependency curve derived prior to testing. The conclusion which can be drawn is that, regardless of exposure to extremes of temperature and humidity, the sensor's output is not affected by humidity. As a result, TGS5042 can meet the requirements of UL2034, Sec. 46A by utilizing a simple temperature compensation method.Figure 16b - Effects of shipping and storageFigure 17a - Humidity testFigure 17b - Humidity test(all data at 50%RH except Sec. 46A test points))4-6 Stability test(1) False alarm testTo show the sensor’s behavior under continuous low level exposure to CO, samples were tested against the procedure detailed in UL2034, Sec.41.1(c)-Stability Test. Test samples were exposed to 30ppm of CO continuously for a period of 30 days under standard circuit conditions. Figure 18 shows the CO sensitivity characteristics before and after the exposure test, demonstrating that detectors using TGS5042 will not give a false alarm as a result of continuous low level CO exposure.(2) Temperature cycle testIn accordance with UL2034, Sec. 41.1(e)-Stability Test, test samples were exposed to ten cycles (<1 hour and >15 minutes) of temperature from 0˚C/100%RH to 49˚C/40%RH. F igure 19 shows CO sensitivity characteristics before and after the cycle test, demonstrating that TGS5042 is hardly influenced by the extreme conditions of the temperature cycle test.4-7 Sequential testIn UL2034, Sec. 41.3, a single lot of sample detectors are to be subjected to the following sequence of tests: Section 38, Section 41.1, Section 39, Section 45, and Section 46A. While TGS5042 meets the requirements of each of these test individually (as shown elsewhere in this brochure), this test is designed to demonstrate the sensor's ability to withstand all of these test when conducted in sequence. Figure 20 shows the results of sequentially testing the same lot of sensors. The good stability of the sensor's output signal indicates that TGS5042 can satisfy the requirements of UL2034, Sec. 41.3-Sequential Test.Figure 18 - False alarm testFigure 19 - Temperature cycle testB ef o re te st i ngA ft e rS ec.38t e stA ft e rS ec.41.1t e stA ft e rS ec.39t e stB ef o re Se c.45.1v ar.am bi e nt t em pt e stA ft e rS ec.45.1v ar.am bi e nt t em pt e st(0˚C)A ft e rS ec.45.1v ar.am bi e nt t em pt e st(49˚C)B ef o re Se c.45.2s hi p pi n g/s to r ag et e stA ft e rS ec.45.2s hi p pi n g/s to r ag et e st(-40˚C)A ft e rS ec.45.2s hi p pi n g/s to r ag et e st(70˚C)B ef o re Se c.46Ah i gh hu mi d it yt e st t es tA ft e rS ec.46A hi g hh um id i ty te st t es tA ft e rS ec.46A lo wh um id i ty te st t es tA ft e rs eq ue nt i al t es tA ft e rS ec.35.3t e stFigure 20 - Sequential test4-8 Dust testTo judge the effect of dust contamination on TGS5042, approximately 2 ounces (0.06 kg) of cement dust, capable of passing through a 200 mesh screen, was circulated for 1 hour by means of a blower, enveloping the sensor in the test chamber. Air flow was maintained at an air velocity of approximately 50 fpm (0.25 m/s) at 20˚C/40%RH. Figure 21 shows the sensor's CO sensitivity characteristics before and after the dust exposure test. This data demonstrates that the dust test of UL2034, Sec. 53 has a negligible effect on CO sensitivity.4-9 Water loss testF or evaluating the life expectancy of TGS5042 from the viewpoint of its water reservoir (which prevents the electrolyte from drying up), the weight loss of TGS5042 was periodically measured when stored at 20˚C/40%RH and 70˚C/5%RH respectively. F igure 22 demonstrates that the sensor’s weight decreased linearly with time due to evaporation of the water. The rate of water loss under various temperature was related with the water vapor pressure at each temperature. According to calculations based on this rate of water loss and the differences in water vapor pressure in 20˚C and 70˚C, the water (>4.5g initially) will last more than 10 years under natural residential conditions such as 20˚C/40%RH.5. MarkingThe TGS5042 comes with a sticker attached to the sensor housing which contains important information. The one dimensional bar code indicates the sensor's sensitivity (slope) in numeric value as determined by measuring the sensor's output in 300ppm of CO:xxxx = x.xxx nA/ppmIn user readable format, the sensor's sensitivity per ppm (nA) is printed below the one dimensional bar code and the sensor's Lot Number is printed to the left of the sensitivity data. Please note that three decimal places should be added to the sensitivity reading (e.g. 1827 should be read as 1.827 nA/ppm).-0.10-0.08-0.06-0.04-0.020.00020*********Time (days)Figure 22 - Water loss testFigure 21 - Dust test1827Sensitivity to CO (nA/ppm)FIGAROTGS5042(Ex.1827 = 1.827nA/ ppm)Figure 23 - TGS5042 markings(NOTE:UL Mark may appear on shrink tube)6. Cautions6-1 Situations which must be avoided1) Disassembling the sensorUnder no circumstances should the sensor be disassem-bled, nor should the sensor can and/or cap be deformed.2) Contamination by alkaline metalsSensor characteristics may be significantly changed when the sensor is contaminated by alkaline metals, especially salt water spray.3) Exposure to high concentration of basic (non-acidic) gases Sensor characteristics may be irreversibly changed by the exposure to high concentrations of basic gases such as ammonia.4) High temperature exposureAt temperatures of 80˚C or higher, the sensing membrane may deteriorate, resulting in irreversible change of sensor characteristics.5) Contact with waterSensor characteristics may be changed due to soaking or splashing the sensor with water.6) Application of excessive voltageIf higher than specified voltage is applied to the sensor, breakage may occur or sensor characteristics may drift, even if no physical damage or breakage occurs. Do not use the sensor once excessive voltage is applied.6-2 Situations to avoid whenever possible1) Exposure to silicone vaporsAvoid exposure of sensor where silicone adhesives, hair grooming materials, or silicone rubber/putty may be present. Silicone vapors may cause clogging of the gas diffusion route.2) Dew condensationIf severe dew condensation occurs for a long period inside of the sensor or on the sensor surface, it may cause clogging of gas diffusion route or deterioration of the sensing membrane. Mild dew condensation which occurs in normal indoor air would not cause any significant damage.3) Storage in sealed containerDo not keep the sensor in a sealed containers such as sealed bag. Due to ambient temperature change, dew condensation may occur inside the sensor if the sensor is stored in this manner.4) FreezingWhen subjected to temperatures below 0˚C, it is possible that the water in the reservoir may freeze. Since water volume will expand when freezing, the sensor can may undergo some deformation. Care should be taken in the design of the detector to ensure that the sensor is not placed too close to other components or the circuit pattern on a PCB, as such deformation may cause the sensor to come in contact with these items. In addition, if the freezing process were to occur very rapidly, the sensor will undergo irreversible change in its characteristics. To avoid this risk, it is recommended that the sensor be positioned with the cap (working electrode) facing up (for more information, refer to Item 3-1 Position Dependency of the Sensor in the document Application Notes for TGS5042).5) Exposure to hydrogen sulfide or sulfuric acid gasIf the sensor is exposed to hydrogen sulfide or sulfuric acid gas, sensor components such as the gas diffusion film, can, and cap may be corroded, resulting in the sensor damage.6) Vibration and shockVibration and shock may cause an open or short circuit inside the sensor.7) Dust and oil mistExtremely high concentrations of dust or oil mist may cause clogging of the sensor's internal structure. When such conditions are expected to be encountered, installation of an external air filter is recommended.8) Flux for solderingManual soldering is recommended since high concen-trations of flux may affect sensor characteristics when the sensor is soldered by wave soldering. When wave soldering is used, a test should be conducted before production starts to see if there would be any influence to sensor characteristics. Please refer to Item 5-3 of Application Notes for TGS5042 for advice on manual soldering conditions. 9) Exposure to organic vaporsIf the sensor is exposed to organic vapors such as alcohols, acetone, or volatile oils, these gases may adsorb on the sensor surface, resulting in temporary sensor drift.6-3 Additional cautions for installationThis sensor requires the existence of oxygen in the operating environment to function properly and to exhibit the characteristics described in this brochure. The sensor will not operate properly in a zero oxygen environment. Figaro USA Inc. and the manufacturer, Figaro Engineering Inc. (together referred to as Figaro) reserve the right to makechanges without notice to any products herein to improve reliability, functioning or design. Information contained in this document is believed to be reliable. However, Figaro does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights, nor the rights of others.F igaro's products are not authorized for use as critical components in life support applications wherein a failure or malfunction of the products may result in injury or threat to life.。
TGS2602空气质量传感器(日本费加罗FIGARO)
TGS2602 用于空气污染物检测的气体传感器* 对VOC 与气味有高灵敏度* 低功耗* 对污染空气有高灵敏度* 使用寿命长* 应用电路简单* 体积小特点:应用:敏感素子由集成的加热器以及在氧化铝基板上的金属氧化物半导体构成。
如果空气中存在对象检测气体，该气体的浓度越高传感器的电导率也会越高。
仅用简单的电路，就可以将电导率的变化转换成与该气体浓度相对应的信号输出。
TGS2602对低浓度气味的气体具有很高的灵敏度，这样还可以对办公室与家庭环境中的废弃物所产生的氨、硫化氢等气体进行检测。
该传感器还对木材精加工与建材产品中的VOC 挥发性气体如甲苯有很高的灵敏度。
由于实现了小型化，加热器电流仅需56mA ，外壳采用标准的TO-5金属封装。
下图所示为典型的灵敏度特性曲线，均在我公司的标准试验条件下（参见背面）测出。
纵坐标表示传感器电阻比 Rs/Ro ，Rs 与Ro 的定义如下：Rs = 各种浓度气体中的传感器电阻值下图所示为受温度、湿度影响的典型特性曲线。
纵坐标表示传感器电阻比 Rs/Ro ，Rs 与Ro 的定义如下：Rs = 传感器在清洁空气中各种温/湿度下的电阻值Ro= 传感器在清洁空气中， 温/湿度为20°C / 65% R.H.时的电阻值灵敏度特性:温/湿度特性:重要提示: 费加罗传感器的使用条件将因不同客户的具体运用不同而不同。
费加罗强烈建议在使用前咨询我们的技术人员，尤其是当客户的检测对象气体不在列表范围时，对于未经费加罗专业测试的任何使用，费加罗不承担任何责任。
* 空气清新机控制* 通风控制* 空气质量监测* VOC 监视器* 气味监视器R s /R oR s /R o规格:结构以及尺寸:管脚连接: 1: 加热器2: 传感器电极 (-) 3: 传感器电极 (+) 4: 加热器功耗值（P S ）可通过下式求出：传感器电阻（R S ）可根据V OUT （V RL ）的测定值用下式求出：(V C - V RL )2R SV C V RLR S = (- 1) x R L P S =在此产品规格书中所显示的都是传感器的典型特性，实际的传感器特性因产品不同而不同，详情请参阅各传感器唯一对应的规格表。
五种点型探测器通用说明书-20130702
二段报警指示灯（红色）
红外接收头 使用红外遥控器编码、标定 (详见遥控器使用说明书)。
-3-
探测器上电约需4分钟的暖机时间，此时连接的控制器报 故障为正常状态，4分钟后即可进入正常监视状态。
2.适用于 BJ-86-3A 型
自检按钮
报警蜂鸣器
指示灯 绿色 – 监视 红色 – 报警 黄色 – 故障
约 200g
吸顶或 壁挂
X
标定
约1年
无需标定
-5-
六、安装位置及接线方法
● 在调试时：上电后绿灯闪亮，约 4 分钟后绿灯长亮，为正 常监视状态。红灯亮为泄漏报警，黄灯亮为故障报警。 探测器在防爆场所，需采用隔爆软管连接（防爆活接头
G3/4″-6g）。使用不同气体的用户，探测器的安装位置也不同。 a. 当燃气比空气轻（如天然气、氢气等）时，请用户将探测器 安装在距屋顶30cm处 。 b.当燃气比空气重（如液化石油气、酒精蒸气、苯蒸气等）时， 请用户将探测器安装在距地面30cm处 。 c.探测器的安装依需要可安装在墙壁上（如图所示）。 d.探测器检测面积及安装数量因房间大小，通风状况而异。 在 不通风场所，探头距易漏源垂直距离2米以内，平均10～20 平方米安装一个探测器 。 e.如安装在复杂环境或特殊场所，请用户与代理店联系 。 f.如安装在气站、气场则另有说明，请用户与代理店联系。
感谢您使用天津费加罗电子有限公司的可燃气体探测器。 万一发生燃气泄漏，则有火灾、爆炸的危险。 本探测器可提前通知您，以便及时采取相应的措施。 愿本探测器忠实地守卫着您的生命财产安全。
一、标记说明
为了您能正确使用探测器，对您的生命财产防患于未然， 本说明书中使用了一些标记。请在了解这些标记的基础上仔 细阅读本说明书。
日本费加罗FIGARO人工煤制气传感器 TGS822TF
TGS822TF 传感器因装有活性炭过滤器，消除 了杂质气体的影响，对有机溶剂或其他挥发性气体 的灵敏度低，而对氢气和一氧化碳的灵敏度高，非 常适合用于检测人工煤制气。
下图是典型的灵敏度特性，全部是在标准试验条 件下得出的结果。（请看背面）
纵坐标以传感器电阻比（Rs/Ro）表示，Rs， Ro 的定义如下：
660±55mW VH＝5.0V
300ppm 氢气中 1～12KΩ
Rs(H2:300ppm) 0.4～0.63
Rs(H2:100ppm) 20±2℃， 65±5％RH
VC＝10.0±0.1V DC/AC VH＝5.0±0.05V DC/AC
RL=10.0 KΩ±1%
7 天以上
功耗（Ps）值可用下式计算：
传感器电阻（Rs），可用下式计算：
管脚连接
1 或 3：传感器 4 或 6：传感器 2 ：加热器 5 ：加热器
为提高性能，本规格书将不事先预告而变更。
深圳市深国安电子科技有限公司
地址：广东省深圳市龙华新区牛栏前大厦Ｃ５０７ 蒋小姐：１３４ ２８７６ ２６３１ 电话：８６ ７５５－８５２５８９００ 网址：ｗｗｗ．ｓｉｎｇｏａｎ．ｃｏｍ ｗｗｗ．ｓｉｎｇｏａｎ．ｃｏｍ．ｃｎ ｗｗｗ．ｓｈｅｎｇｕｏａｎ．ｃｏｍ
此传感器需要施加 2 个电 压：加热器电压（VH）和 回路电压（VC）。这个VH用 于维持敏感素子处于与对 象气体相适应的特定温度 而施加在集成的加热器 上。VC则是用于测定与传
感器串联的负载电阻（RL）上的 两端电压（VRL）。这种传感器具 有极性，所以VC需用直流电源。 只要能满足传感器的电性要求，
Rs ＝不同浓度气体中的电阻值 Ro ＝1000ppm 一氧化碳中的电阻值
灵敏度ቤተ መጻሕፍቲ ባይዱ性：
日本费加罗FIGARO 氧气传感器 ke20 ke50
GS 氧气传感器KE系列（KE-12/KE-25/KE-50）是一种独特 的、日本于1985年开发成功的原电池式氧气传感器。其显著特 点是使用寿命长，具有优良的化学稳定性，而且不易受CO2的 干扰与影响。KE系列传感器是为了满足各种行业检测氧气的不 断增长的需求而开发的，譬如可燃气体检测、生物技术运用、
医疗器械运用、住宅用燃气器具等等。
灵敏度特性:
（标准测试条件下的典型数据）
响应时间:
（典型）
300
250
200 150 Ou1t0p0ut Voltage (mV)
50
KE-50 KE-12 KE-25
0
0
20
40
60
80
100
Oxygen Concentration (%)
120
100 KE-12 KE-25
3）20˚C正常空气（1013 hPa / 20.7 %O2） 中的预期寿命指传感器输出值下降到初 始值70%的这段时期。
80 KE-50
60
Out4p0ut Voltage (mV)
20
0
0
20
40
60
80
100
120
Time (sec.)
产品介绍
尺寸图:
KE-12/KE-25/KE-50 standard version ø28±0.5
KE-25F1 (w/o flange) 22.7±0.5
KE-25F3 (threaded top) 22.7±0.5
KE-25F4 (O-ring top) 22.7±0.5
ø23±0.5
ø23±0.5
ø23±0.5
22.5±0.3
13 ø5 ø9
费加罗传感器
费加罗传感器广州南创陈工FIGARO是一家专业生产半导体气体传感器的公司，1962年发明全球第一款半导体产品，目前全球第一。
FIGARO的产品远销38个国家，在多个国家设立了分支机构或办事处，生产基地遍布美洲、东欧、中国等地；并在中国设立了广州南创传感器事业部，可为用户的实验和生产提供最佳的服务与解决方案。
半导体气体传感器采用金属氧化物半导体烧结工艺，对被检测的检测气体具有灵敏度高、响应时间短、成本低、长期稳定性好等优点。
我们的产品包括可燃气体、有毒气体、空气质量、一氧化碳、二氧化碳、氨气、汽车尾气、酒精等传感器元件、传感模块等，以及各种气体传感器的配套产品。
目前已经被广泛应用于家用燃气报警器、工业有毒气体报警器、空气清新机、换气空调、空气质量控制、汽车尾气检测、蔬菜大棚、酒精检测、孵化机械等。
费加罗传感器KE-25KE-50信息费加罗传感器KE-25KE-50性能：测量范围：0-100％O2精度：氧气传感器KE-25：±1％（全量程）；氧气传感器KE-50：±2％（全量程）工作温度：5～40℃储存温度：-20～＋60℃响应时间：KE-25：14±2秒；KE-50：60±5秒初始输出：KE-25：10.0–15.5mv；KE-50：47.0-65.0mv期望寿命：KE-25：5年；KE-50：10年费加罗传感器KE-25KE-50特性：长寿命（KE-25-5年，KE-50-10年）不受CO2，CO，H2S，NOx，H2影响低成本，在常温下工作信号输出定，无需外部电源不需加热以上费加罗传感器技术参数以《OIML60号国际建议》92年版为基础，最新具体变化可查看《JJG669—12FIGARO广州南创传感器事业部检定规程》产品特性描述：氧气传感器KE-25KE-50属于半导体气体传感器不受CO2，CO，H2S，NOx，H2影响，氧气传感器KE-25KE-50低成本在常温下工作信号输出定，无需外部电源不需加热；精度氧气传。
日本费加罗催化燃烧可燃气体传感器TGS6812
日本费加罗催化燃烧可燃气体传感器TGS6812 Technical Information for Hydrogen Gas SensorsThe Figaro TGS6812 catalytic type gas sensor can detect levels of hydrogen up to 100%LEL. This sensor features high accuracy, good d urability and stability, quick response, and linear output. This sensor can detect hydrogen as well as methane and LP gas, making it an excellent solution for monitoring gas leakage from stationary fuel cell systems which transform combustible gases into hydrogen.P a g e Basic Information and SpecificationsFeatures (2)Applications (2)Structure..........................................................................2 Basic Measuring Circuit....................................................2 Circuit & Operating Conditions.. (3)Specifications (3)Dimensions...............................................................................3Typical Sensitivity Characteristics Sensitivity to Various Gases................................................4 Temperature Dependency...........................................................4 Humidity Dependency...........................................................4 Heater Voltage Dependency.............................................5 Gas Response....................................................................................5 Initial Action........................................................................5Reliability Long Term Characteristics.............................................................6 Durability to Hydrogen.......................................................................6 Durability to Sulphur Dioxide...........................................................6 Durability toNitrogen Dioxide.........................................................7 Durability to HMDS....................................................................7 Effects of Air Flow.............................................................................7Cautions (8)a n I S O 9001 c o m p a n yIMPORTANT NOTE: OPERATING CONDITIONS IN WHICH FIGARO SENSORS ARE USED WILL VARY WITH EACH CUSTOMER’S SPECIFIC APPLICATIONS. FIGARO STRONGLY RECOMMENDS CONSULTING OUR TECHNICAL STAFF BEFORE DEPLOYING FIGARO SENSORS IN YOUR APPLICATION AND, IN PARTICULAR, WH EN CUSTOMER’S TARGET GASES ARE NOT LISTED H EREIN. FIGARO CANNOT ASSUME ANY RESPONSIBILITY FOR ANY USE OF ITS SENSORS IN A PRODUCT OR APPLICATION FOR WHICH A SENSOR HAS NOT BEEN SPECIFICALLY TESTED BY FIGARO.1. Basic Information and Specifications 1-1 Features* Linear output * Compact size* Small sensitivity to alcohol* Sensitive to hydrogen, methane, and LP gas * Meets RoHS requirements 1-2 Applications* Hydrogen and combustible gas leak detectors for fuel cell applications1-3 StructureFigure 1 shows the structure of TGS6812. The sensor is comprised of two elements: element (D) which is sensitive to combustible gases, and a reference element (C) which does not have sensitivity to combustible gases. The sensing element (D) is made of alumina doped with catalysts, while the reference element (C) is made of alumina. Both coils are made of Pt wire,and the wires of both elements (D) and (C) are connected to nickel pins No. 2 & 3 and No. 1 & 4 respectively. The sensor base and cap are made of reinforced Polybutylene Terephthalate (PBT). The upper opening in the cap is covered with a double layer of 100 mesh stainless steel gauze (SUS316). The TGS6812 utilizes a zeolite filter inside the cap for reducing the influence of interference gases.1-4 Basic measuring circuitThe T GS6812 i s c omprised o f t wo e lements: 1) e lement (D) which is sensitive to combustible gases and 2) a reference element (C) which is not sensitive to combustible gases. These elements are installed into a “Wheatstone Bridge”. A variable resistor should be adjusted so that the bridge will produce a stable baseline signal when in an environment free of combustible gases. When combustible gases are present, they will be combusted on the detecting element, causing its temperature to rise. Accordingly the resistance of this element will increase. This results in an “out-of-balance” signal across the bridge and a corresponding change in output voltage which can be measured.Fig. 1 - Sensor structureFig. 2 - Basic measuring circuitTop viewSide viewu/m = mmCapBottom viewBaseDetector sideCompensator side1-4 : Compensator 2-3 : Detector1-5 Circuit & operating conditionsThe ratings shown below should be maintained at all times to insure stable sensor performance:1-6 Specifications NOTE 1Mechanical Strength:The sensor shall have no abnormal findings in its structure and shall satisfy the above electricalspecifications after the following performance tests: Vibration - Drop test -frequency:10~150H z, accel-eration: 2G, duration:10 times, direction: three dimensions drop onto a cement floor from a height of 250mm, repeated 5 times NOTE 1:Sensitivity characteristics are obtained under the following standard test conditions:(Standard test conditions)Temperature a nd humidity: 20 ± 2?C, 65 ± 5% RH Circuit conditions:V H = 3.0±0.05V AC/DC Preheating period: 30 seconds or more under standard circuit conditions 1-7 Dimensions Fig. 3 - Sensor dimensionsAll sensor characteristics shown in this brochurerepresent typical characteristics. Actualcharacteristics vary from sensor to sensor andfrom production lot to production lot. The only characteristics warranted are those shown inthe Specification table above.-101020304050020*********Relative humidity (%RH)2-2 Temperature dependencyFigure 5 shows the temperature dependency of TGS6812 at 65%RH in 10%LEL of methane, LP gas, and hydrogen. Since the temperature dependency of element (D) is compensated by element (C), the temperature dependency of sensor output in the range from -10?C to +70?C is very small.2-3 Humidity dependencyFigure 6 shows the relative humidity dependencyof TGS6812 under constant temperature of 20?C in 10%LEL of methane, LP gas, and hydrogen. This data demonstrates that the humidity dependency of TGS6812 is negligible as humidity varies.Fig. 4 - TGS6812 sensitivity to various gasesFig. 6 - TGS6812 humidity dependency-10010203040502.902.953.003.05 3.10Operating voltage (V)2-4 Heater voltage dependencyFigure 7 shows the change in the sensor output according to variations in the heater voltage (V H ).Note that 3.0±0.1V as a heater voltage must be maintained because variance in applied heater voltage will cause the sensor’s characteristics to be changed from the typical characteristics shown in this brochure.2-5 Gas responseFigure 8 shows the change pattern of sensor output (Vout) for TGS6812 when the sensor is inserted 4000ppm of hydrogen.As these charts display, the sensor’s response speed to the presence of gas is extremely quick.2-6 Initial actionnormal air and later energized in clean air.warm-up process is called “Initial Action”.powering on, it is recommended that an initial delay circuit be incorporated into the detector’s design. This is esp ecially recommended for intermittent-operating devices such as portable gas detectors.Fig. 7 - Heater voltage dependencyFig. 8 - Gas responseFig. 9- Initial action-1010201020-101020period.3-2 Durability to hydrogenconcentration exposure to hydrogen gas. The measurement was taken, the sensor was exposed to 1% of H 2 for over 2000 hours. At each measurement point, the sensor was removed from H 2measuring sensor output.characteristics after exposure to high concentrations of hydrogen.3-3 Durability to sulphur dioxideFigure 12 shows the effect on TGS6812 of exposure to SO 2. The initial point of the graph shows the value of sensor output prior to SO 2 exposure. After the initial measurement was taken, the sensor was exposed to 25ppm of SO 2 for over 2400 hours in total. At each measurement point, the sensor was removed from SO 2 and energized in normal air for 10 hours prior to measuring the sensor output.The data demonstrates that TGS6812 shows stable characteristics after exposure to SO 2.Fig. 11 - Durability to hydrogenFig. 12 - Durability to SO 2-101020-101020characteristics after exposure to NO 2. 3-5 Durability to HMDSFigure 14 shows the effect on TGS6812 of exposure to HMDS.The initial point of the graph shows the value of sensor output prior to HMDS exposure. After the initial measurement was taken, the sensor was exposed to 10ppm of HMDS for one hour in total. At each measurement point, the sensor was removed from HMDS and energized in normal air for 1 hour prior to measuring the sensor output.This data demonstrates that TGS6812 shows stable characteristics after exposure to HMDS.3-6 Effects of Air FlowTable 1 shows how the sensor is affected by airflows (refer to Fig. 15 for illustration of airflows in Table 1). This data demonstrates that there is no significant influence on the sensor by an air flow of 3.1 meters/sec.Fig. 14 - Durability to HMDSFig. 15 - Air flow testing direction (ref. Table 1)Table 1 - Effects of air flow on output voltage4 Cautions on Usage of Figaro Gas Sensors4-1 Situations which must be avoided1) Exposure to silicone vaporsIf silicone vapors adsorb onto the sensor’s surface, the sensing material will be coated, irreversibly inhibiting sensitivity. Avoid exposure where silicone adhesives, hair grooming materials, or silicone rubber/putty may be present.2) Highly corrosive environmentHigh density exposure to corrosive materials such as H2S, SOx, Cl2, HCl, etc. for extended periods may cause corrosion or breakage of the lead wires or heater material.3) Contamination by alkaline metalsSensor drift may occur when the sensor is contaminated by alkaline metals, especially salt water spray.4) Contact with waterSensor drift may occur due to soaking or splashing the sensor with water.5) FreezingIf water freezes on the sensing surface, the sensing material would crack, altering characteristics.6) Application of excessive voltageIf higher than specified voltage is applied to the sensor, the lead wires and/or sensor elements may be damaged or sensor characteristics may drift, even if no physical damage or breakage occurs.7) Operation in zero/low oxygen environment TGS6812 requires the presence of a certain amount of oxygen in its operating environment in order to generate a combustion reaction of gas on the sensor’s surface. It cannot properly operate in a zero or low oxygen content atmosphere.8) Excessive exposure to alcoholIf TGS6812 is exposed to high concentrations of alcohol (such as 10,000ppm or more) for a long period, the filter may become saturated. In this case, the sensor would show a lower resistance in alcohol than indicated in Figure 4.9) VibrationExcessive vibration may result in zero drift or cause the sensor or lead wires to resonate and break. Usage of compressed air drivers/ultrasonic welders on assembly lines may generate such vibration, so tests should be conducted to verify that there will be no influence on sensor characteristics.10) ShockZero drift and breakage of lead wires may occur if the sensor is subjected to a strong shock. To avoid shock, please keep the sensor in the original packing foam during storage.4-2 Situations to be avoided whenever possible1) Water condensationLight condensation under conditions of indoor usage should not pose a problem for sensor performance.H owever, if water condenses on the sensor’s surface and remains for an extended period, sensor characteristics may drift.2) Usage in high density of gasSensor performance may be affected if exposed to a high density of gas for a long period of time, regardless of the powering condition.3) Storage for extended periodsWhen stored without powering for a long period, the sensor may show a reversible drift in resistance according to the environment in which it was stored. The sensor should be stored in a sealed bag containing clean air; do not use silica gel. Note that as unpowered storage becomes longer, a longer preheating period is required to stabilize the sensor before usage. 4) Long term exposure in adverse environment Regardless of powering condition, if the sensor is exposed in extreme conditions such as very high humidity, extreme temperatures, or high contamination levels for a long period of time, sensor performance will be adversely affected.5) SolderingIdeally, sensors should be soldered manually.H owever, wave soldering can be done under the following conditions:a) Suggested flux: rosin flux with minimal chlorineb) Speed: 1-2 meters/min.c) Preheating temperature: 100±20?Cd) Solder temperature: 250±10?Ce) Up to two passes through wave soldering machine allowed Results of wave soldering cannot be guaranteed if conducted outside the above guidelines since someFigaro USA Inc. and the manufacturer, Figaro Engineering Inc. (together referred to as Figaro) reserve the right to make changes without notice to any products herein to improve reliability , functioning or design. Information contained in this document is believed to be reliable. H owever, Figaro does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights, nor the rights of others.Figaro’s products are not authorized for use as critical components in life support applications wherein a failure or malfunction of the products may result in injury or threat to life.flux vapors may cause drift in sensor performance similar to the effects of silicone vapors.。
日本费加罗FIGARO可燃气体传感器 TGS813
Technical Information for Combustible Gas SensorsFigaro TGS 8-series sensors are a type of sintered bulk metal oxide semiconductor wh ich offer low cost, long life, and good sensitivity to target gases while utilizing a simple electrical circuit. Th e TGS813 displays h igh selectivity and sensitivity to LP Gas and methane.PageSpecificationsFeatures..........................................................................2 Applications...................................................................2 Structure..........................................................................2 Basic measuring circuit....................................................2 Circuit & operating conditions.........................................3 Specifications..............................................................................3 Dimensions...............................................................................3Basic Sensitivity Characteristics Sensitivity to various gases................................................4 Temperature and humidity dependency............................5 Heater voltage dependency..........................................................6 Gas response....................................................................................6 Initial action........................................................................7 Long term characteristics.............................................................7Cautions . (8)See also Technical Brochure ‘Technical Information on Usage of TGSSensors for Toxic and Explosive Gas Leak Detectors’.IMPORTANT NOTE: OPERATING CONDITIONS IN WHICH FIGARO SENSORS ARE USED WILL VARY WITH EACH CUSTOMER’S SPECIFIC APPLICATIONS. FIGARO STRONGLY RECOMMENDS CONSULTING OUR TECHNICAL STAFF BEFORE DEPLOYING FIGARO SENSORS IN YOUR APPLICATION AND, IN PARTICULAR, WH EN CUSTOMER’S TARGET GASES ARE NOT LISTED H EREIN. FIGARO CANNOT ASSUME ANY RESPONSIBILITY FOR ANY USE OF ITS SENSORS IN A PRODUCT OR APPLICATION FOR WHICH SENSOR HAS NOT BEEN SPECIFICALLY TESTED BY FIGARO.a n I S O 9001 c o m p a n y1. Specifications 1-1 Features * General purpose sensor for a wide range of combustible gases* High sensitivity to LP gas and methane * Low cost * Long life* Uses simple electrical circuit1-2 Applications* Domestic gas leak detectors and alarms * Recreational vehicle gas leak detectors * Portable gas detectors1-3 StructureFigure 1 shows the structure of TGS813. This sensor is a sintered bulk semiconductor composed mainly of tin dioxide (SnO 2). The semiconductor material and electrodes are formed on an alumina ceramic tube. A heater coil, made of 60 micron diameter wire, is located inside the ceramic tube. Lead wires from the sensor electrodes are a gold alloy of 80 microns in diameter. Heater and lead wires are spotwelded to the sensor pins which have been arranged to fit a 7-pin miniature tube socket.The sensor base and cover are made of Nylon 66, conforming to UL 94H B (Authorized Material Standard). The deformation temperature for this material is in excess of 240˚C. The upper and lower openings in the sensor case are covered with a flameproof double layer of 100 mesh stainless steel gauze (SUS316). Independent tests confirm that this mesh will prevent a spark produced inside the flameproof cover from igniting an explosive 2:1 mixture of hydrogen/oxygen.1-4 Basic measuring circuitFigure 2 shows the basic measuring circuit for use with TGS813. Circuit voltage (Vc) is applied across the sensor element which has a resistance between the sensor’s two electrodes and the load resistor (R L ) connected in series. The sensor signal (V RL ) is measured indirectly as a change in voltage across the R L . The Rs is obtained from the formula shown at the right.Fig. 1 - Sensor structureFig. 2 - Basic measuring circuitVc- V RLV RLRs = x R LFormula to determine RsSensor elementFig. 3 - Sensor dimensions1-5 Circuit & operating conditionsThe ratings shown below should be maintained at all times to insure stable sensor performance:1-6 Specifications NOTE 1Mechanical Strength:The sensor shall have no abnormal findings in its structure and shall satisfy the above electrical specifications after the following performance tests:Withdrawal Force - Vibration - Shock -withstand force > 5kg in eachdirectionfrequency-1000c/min., totalamplitude-4mm, duration-one hour, direction-verticalacceleration-100G, repeated 5timesNOTE 1: Sensitivity characteristics are obtained under the following standard test conditions:(Standard test conditions)Temperature and humidity: 20 ± 2˚C, 65 ± 5% RH Circuit conditions:Vc = 10.0±0.1V AC/DC V H = 5.0±0.05V AC/DC R L = 4.0kΩ ± 1%Preheating period: 7 days or more under standard circuit conditions17ø±0.516.5±0.56.5±0.59.5ø1ø±0.0545˚45˚132645u/m:mm1-7 DimensionsTop viewSide viewBottom view2. Basic Sensitivity Characteristics 2-1 Sensitivity to various gasesFigure 4 shows the relative sensitivity of TGS813 to various gases. The Y-axis shows the ratio of the sensor resistance in various gases (Rs) to the sensor resistance in 1000ppm of methane (Ro).Using the basic measuring circuit illustrated in Figure 2, these sensitivity characteristics provide the sensor output voltage (V RL ) change as shown in Figure 5.NOTE :All sensor characteristics in this technical brochure represent typical sensor characteristics. Since the Rs or output voltage curve varies from sensor to sensor, calibration is required for each sensor (for additional information on calibration, please refer to the Technical Advisory ‘Technical Information on Usage of TGS Sensors for Toxic and Explosive Gas Leak Detectors’).12-2 Temperature and humidity dependencyFigure 6 shows the temperature and humidity dependency of TGS813. The Y-axis shows the ratio of sensor resistance in 1000ppm of methane under various atmospheric conditions (Rs) to the sensor resistance in 1000ppm of methane at 20˚C/65%RH (Ro).under various ambient conditionsTable 1 - Temperature and humidity dependency(typical values of Rs/Ro for Fig. 6)Table 1 shows a chart of values of the sensor’s resistance ratio (Rs/Ro) under the same conditions as those used to generate Figure 6.Figure 7 shows the sensitivity curve for TGS813 to methane under several ambient conditions. While temperature may have a large influence on absolute Rs values, this chart illustrates the fact that effect on the slope of sensor resistance ratio (Rs/Ro) is not significant. As a result, the effects of temperature on the sensor can easily be compensated.For economical circuit design, a thermistor can be incorporated to compensate for temperature (for additional information on temperature compensation in circuit designs, please refer to the Technical Advisory ‘Technical Information on Usage of TGS Sensors for Toxic and Explosive Gas Leak Detectors’).1010Rs (kΩ)102-6 Initial actionclean air.process is called “Initial Action”.circuit be incorporated into the detector’s design (TGS Sensors for Toxic and Explosive Gas Leak Detectors’). This is especially recommended for intermittent-operating devices such as portable gas detectors.2-7 Long-term characteristicsFigure 13 shows long-term stability of TGS813 as measured for more than 8 years. The sensor is first energized in normal air. Measurement for confirming sensor characteristics is conducted under ambient air conditions rather than in a temperature/humidity controlled environment. The cyclic change in sensitivity corresponds to the seasonal changes of temperature/humidity in Japan (peak T/H conditions occur in July, as corresponds with the sensitivity peaks in this chart ). The Y-axis represents the ratio of sensor resistance in 1000ppm of methane on the date tested (Rs) to sensor resistance in 1000ppm of methane at the beginning of the test period (Ro).As this chart illustrates, TGS813 shows stable characteristics over a very long period of time.Fig. 12 - Long term stability(Ro = Rs on day 1)3 Cautions3-1 Situations which must be avoided1) Exposure to silicone vaporsIf silicone vapors adsorb onto the sensor’s surface, the sensing material will be coated, irreversibly inhibiting sensitivity. Avoid exposure where silicone adhesives, hair grooming materials, or silicone rubber/putty may be present.2) Highly corrosive environmentHigh density exposure to corrosive materials such as H2S, SOx, Cl2, HCl, etc. for extended periods may cause corrosion or breakage of the lead wires or heater material.3) Contamination by alkaline metalsSensor drift may occur when the sensor is contam-inated by alkaline metals, especially salt water spray.4) Contact with waterSensor drift may occur due to soaking or splashing the sensor with water.5) FreezingIf water freezes on the sensing surface, the sensing material would crack, altering characteristics.6) Application of excessive voltageIf higher than specified voltage is applied to the sensor or the heater, lead wires and/or the heater may be damaged or sensor characteristics may drift, even if no physical damage or breakage occurs.7) Application of voltage on lead wiresOn six-pin type sensors, if a voltage is applied on the lead wires between pins 1 and 3 and/or pins 4 and 6, this would cause breakage of the lead wires.8) Operation in zero/low oxygen environment TGS sensors require the presence of around 21% (ambient) oxygen in their operating environment in order to function properly and to exhibit characteristics described in Figaro’s product literature. TGS sensors cannot properly operate in a zero or low oxygen content atmosphere.3-2 Situations to be avoided whenever possible1) Water condensationLight condensation under conditions of indoor usage should not pose a problem for sensor performance.H owever, if water condenses on the sensor’s surface and remains for an extended period, sensor characteristics may drift.2) Usage in high density of gasSensor performance may be affected if exposed to a high density of gas for a long period of time, regardless of the powering condition.3) Storage for extended periodsWhen stored without powering for a long period, the sensor may show a reversible drift in resistance according to the environment in which it was stored. The sensor should be stored in a sealed bag containing clean air; do not use silica gel. Note that as unpowered storage becomes longer, a longer preheating period is required to stabilize the sensor before usage. 4) Long term exposure in adverse environment Regardless of powering condition, if the sensor is exposed in extreme conditions such as very high humidity, extreme temperatures, or high contamination levels for a long period of time, sensor performance will be adversely affected.5) VibrationExcessive vibration may cause the sensor or lead wires to resonate and break. Usage of compressed air drivers/ultrasonic welders on assembly lines may generate such vibration, so please check this matter.6) ShockBreakage of lead wires may occur if the sensor is subjected to a strong shock.7) SolderingIdeally, sensors should be soldered manually. For soldering conditions of 8-series gas sensors, refer to Technical Advisory for Soldering 8-type Gas Sensors. 8) PolarityIf the polarity of Vc is reversed during powering, sensor characteristics may temporarily become unstable.15 24 36Figaro USA Inc. and the manufacturer, Figaro Engineering Inc. (together referred to as Figaro) reserve the right to make changes without notice to any products herein to improve reliability, functioning or design. Information contained in this document is believed to be reliable. H owever, Figaro does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights, nor the rights of others.Figaro’s products are not authorized for use as critical components in life support applications wherein a failure or malfunction of the products may result in injury or threat to life.。
费加罗技研株式会社 EC01 气体传感器评价试验箱 操作使用说明书
１．安全注意事项２．使用注意事项３．部件名称及功能概述４．测试准备５．测试方法６．规格目次欢迎购买使用气体传感器评价试验箱（EC01），对此我们表示由衷的感谢！请在仔细阅读本操作使用说明书后正确使用本产品。
１１２４６８费加罗技研株式会社EC01（气体传感器评价试验箱）操作使用说明书(1)(2)(3)(4)1. 安全注意事项请务必遵守2. 使用注意事项本产品是一种简易型的试验箱。
使用时请仔细盖紧盖板不能留有缝隙。
如果要进行很精确的气体测试时，请选用比本产品气密性更高的试验箱。
测试时如果将类似于气体报警器这样体积较大的设备放入试验箱的话，可能因为试验箱的有效容积减少而导致气体浓度制备出现误差。
由于氨气、VOC 、有机溶剂蒸汽等吸附性很强的气体很容易吸附在试验箱的内壁之上，因此本产品不适用于这些气体的测试用途。
吸附于箱内壁的气体液化后，有可能导致试验箱内的气体浓度下降。
有必要对吸附性很强的气体进行测试时，请选用箱内壁采用了气体不容易附着材质的试验箱，或对箱内壁进行过涂层处理的试验箱。
如果已经向本试验箱内注入了吸附性很强的气体，为了在使用后去除附着的气体，请用酒精擦拭试验箱内部，然后对内部用洁净空气进行长时间换气等的妥善处置。
如果在高温、低温或极度的低湿度与高湿度的室内环境进行测试的话，气体传感器的测定值可能会受到影响。
请在测试前对各型号传感器规格进行确认。
本试验箱没有防爆设计。
请勿在对气体爆炸下限为(LEL) 50％以上浓度的可燃性气体进行测试时使用。
本试验箱无法保证绝对完全的密闭状态。
请勿在对可能危及人身安全的高浓度毒性气体进行测试时使用。
在用于对可燃性气体进行测试时请务必注意防火措施，同时试验箱向外排气时请在可以充分换气的场所进行。
而且，为确保安全，请考虑采取设置气体报警器等措施。
尤其是在用于对毒性气体进行测试的用途时，请务必在能够保证充分换气的场所进行。
另外出于安全考虑，将试验箱中的气体排出时请注意避免人员吸入的同时，请在室外或排风罩内进行操作。
费加罗检测空气质量VOC传感器TGS2600
因为采用小型化芯片，TGS2600 的加热器所需电流仅为 42mA，并且安置于标准 TO-5 封装 中。
检测Ｂ麲空气质量Ｖ Ｏ ＜Ｃ传感器ＴＧ Ｓ２６００
特征: ★低 功耗,5V供电 ★对气态空气污染物灵敏度高 ★长寿命, 低成本 ★小尺寸， 应用电路简单
应用： ★ 空气净化器 ★ 新风系统，智能家居 ★ 空气质量检测 ★ １８０７＊０４３０＊９８０，ｚｈｅｎｇ＿ｘｉｎｇｈｕｉ＠１６３．ｃｏｍ
敏感元件由一个以金属铝做衬底的金属氧化物敏感芯片 和一个完整的加热器组成。在检测气体时, 传感器的传导率 依赖于空气中气体浓度的变化。 一个简单的电路能将该传导 比率的变化转化成对应于气体浓度变化的输出信号.
标准测试 抗
条件下的 加热器电 IH 42±4mA
电气特性 流
加热器消 PH 210mW VH=5.0V DC
耗功率
传感器阻 RS 10K-90 kΩ在空气中
抗
灵敏度 测试气体条件
0.3-0.6
RS (10 ppm,氢气) RS (空气)
在20±2°C, 65±5%RH的正常空气
标准测试 电路条件
VC = 5.0±0.01V DC
RS=清新空气中的传感器在不同 温、湿度条件下的阻值
R0=清新空气中的传感器在 20℃ 及 65%相对湿度下的阻值
灵敏度特性：
温湿度特性：
浓度（ppm）
环境温度（℃）
基本测量电路： 此传感器要求有两个电压输入：加热器电压 VH
FAGIRO TGS 传感器 TGS822 有机溶剂蒸气检测用 说明书
TGS822 有机溶剂蒸气检测用特点： 应用：・对乙醇等有机溶剂有高灵敏度 ・酒精检测器・长期稳定性优良 ・工厂、干洗店、半导体产业的 ・长寿命、低成本 有机溶剂检知 ・以简单电路即可使用费加罗气体传感器的气敏素子，使用在清洁空气中电导率低的二氧化锡(SnO2)。
当存在检知对象气体时，传感器的电导率随空气中气体浓度增加而增大。
使用简单的电路即可将电导率的变化，转换为与该气体浓度相对应的输出信号。
TGS822传感器对酒精、有机溶剂的灵敏度高，在酒精检测器等方面得到广泛应用。
相同特性的TGS823，采用了陶瓷底座，可以在200℃的高温气氛中使用。
下图是典型的灵敏度特性，全部是在标准试验条件下得出的结果。
（请看背面）纵坐标以传感器电阻比（Rs/Ro ）表示，Rs ，Ro 的定义如下：Rs ＝不同浓度气体中的电阻值 Ro ＝300ppm 乙醇中的电阻值灵敏度特性： 下图为受温度、湿度影响的典型曲线。
图中纵坐标也以传感器电阻比（Rs/Ro ）表示，这里的Rs ，Ro 定义如下：Rs=含300ppm 乙醇、各种温/湿度下的电阻值 Ro=含300ppm 乙醇、20℃65%R.H.下的电阻值温/湿度的影响：SUNSTAR传感与控制 0755-********SUNSTAR传感与控制/TEL:0755-********FAX:0755-********E-MAIL:**************规格： 结构及尺寸：型 号 TGS822 素子类型 8系列标准封装塑料、SUS 双重金属网对象气体 酒精、有机溶剂 检测范围50～5,000 ppm 加热器电压VH 5.0±0.2V DC/AC 回路电压 VC MAX 24VPs ≦15mW标准回路 条件负载电阻 RL 可变 Ps ≦15mW 加热器电阻RH 38±3.0 Ω（室温） 加热器功耗PH 660±55mWVH ＝5.0V传感器电阻Rs300ppm 乙醇中 1～10K Ω 标准试验 条件下的 电学特性灵敏度(Rs 的变化率)0.4±0.1Rs(EtOH:300ppm)Rs(EtOH:50ppm)试验气体条件20±2℃， 65±5％RH 回路条件 VC ＝10.0±0.1V DC/AC VH ＝5.0±0.05V DC/AC RL=10.0 K Ω±1%标准试验 条件预热时间7天以上功耗（Ps）值可用下式计算： 传感器电阻（Rs ），可用下式计算：管脚连接 1或3：传感器4或6：传感器2 ：加热器5 ：加热器SUNSTAR传感与控制 0755-********SUNSTAR传感与控制/TEL:0755-********FAX:0755-********E-MAIL:**************FIGAROApplications:Features:TGS 822 - for the detection of Organic Solvent VaporsThe figure below represents typical sensitivity char-acteristics, all data having been gathered at standard test conditions (see reverse side of this sheet). The Y-axis is indicated as sensor resistance ratio (Rs/Ro) which is defined as follows:The figure below represents typical temperature and humidity dependency characteristics. Again, the Y-axis is indicated as sensor resistance ratio (Rs/Ro), defined as follows:Rs = Sensor resistance at 300ppm of ethanol* High sensitivity to organic solvent vaporssuch as ethanol* High stability and reliability over a longperiod* Long life and low cost* Uses simple electrical circuit* Breath alcohol detectors* Gas leak detectors/alarms* Solvent detectors for factories, dry clean-ers, and semiconductor industriesThe sensing element of Figaro gas sensors is a tin dioxide (SnO 2) semiconductor which has low conductivity in clean air. In the presence of a detectable gas,the sensor's conductivity increases depending on the gas concentration in the air. A simple electrical circuit can convert the change in conductivity to an output signal which corresponds to the gas concentration.The TGS 822 has high sensitivity to the vapors of organic solvents as well as other volatile vapors. It also has sensitivity to a variety of combustible gases such as carbon monoxide, making it a good general purpose sensor. Also available with a ceramic base which is highly resistant to severe environments as high as 200°C (model# TGS 823).IMPORTANT NOTE: RECOMMENDS CONSULTING OUR TECHNICAL STAFF BEFORE DEPLOYING FIGARO SENSORS IN YOUR APPLICATION AND, IN PARTICULAR, WHEN CUSTOMER’S TARGET GASES ARE NOT LISTED HEREIN. FIGARO CANNOT ASSUME ANY RESPONSIBILITY FOR ANY USE OF ITS SENSORS IN A PRODUCT OR APPLICATION FOR WHICH SENSOR HAS NOT BEEN SPECIFICALLY TESTED BY FIGARO.SUNSTAR自动化/TEL:0755-********FAX:0755-********E-MAIL:**************Structure and Dimensions:1 Sensing Element:SnO 2 is sintered to form a thick film on the surface of an alumina ceramic tube which contains an internal heater.2 Cap:Nylon 663 Sensor Base:Nylon 664 Flame Arrestor:100 mesh SUS 316 double gauzePin Connection and Basic Measuring Circuit:The numbers shown around the sensor symbol in the circuit diagram at the right correspond with the pin numbers shown in the sensor's structure drawing (above). When the sensor is connected as shown in the basic circuit, output across the Load Resistor (V RL ) increases as the sensor's resistance (Rs) de-creases, depending on gas concentration.Sensor Resistance (Rs) is calculated by the following formula:Rs = (-1) x R LV CV RL Power dissipation across sensor electrodes (Ps) is calculated by the following formula:Ps = 2V C x Rs 2(Rs + R L )Basic Measuring Circuit:REV: 9/99when the sensor is tested in standard conditions as speci-fied below:Test Gas Conditions:20°±2°C, 65±5%R.H.Circuit Conditions:V C = 10.0±0.1V (AC or DC),V H = 5.0±0.05V (AC or DC),R L = 10.0k Ω±1%Preheating period before testing: More than 7 daysFor information on warranty, please refer to Standard Terms and Conditions of Sale of Figaro USA Inc.17 ± 0.59.516.5±0.56.5±0.51.0±0.563425145˚45˚um : mmSUNSTAR自动化/TEL:0755-********FAX:0755-********E-MAIL:**************TGS822TF 人工煤制气检测用特点： 应用：・对煤制气中的氢气和一氧化碳有高灵敏度 ・家庭用、业务用煤制气报警器 ・乙醇等有机溶剂的干扰小 ・便携式煤制气检知 ・长寿命、低成本 ・以简单电路即可使用费加罗气体传感器的气敏素子，使用在清洁空气中电导率低的二氧化锡(SnO2)。
日本费加罗催化燃烧可燃气体传感器 TGS6812
Technical Information for Hydrogen Gas SensorsThe Figaro TGS6812 catalytic type gas sensor can detect levels of hydrogen up to 100%LEL. This sensor features high accuracy, good d urability and stability, quick response, and linear output. This sensor can detect hydrogen as well as methane and LP gas, making it an excellent solution for monitoring gas leakage from stationary fuel cell systems which transform combustible gases into hydrogen.P a g e Basic Information and SpecificationsFeatures..........................................................................2 Applications...................................................................2 Structure..........................................................................2 Basic Measuring Circuit....................................................2 Circuit & Operating Conditions.........................................3 Specifications..............................................................................3 Dimensions...............................................................................3Typical Sensitivity Characteristics Sensitivity to Various Gases................................................4 Temperature Dependency...........................................................4 Humidity Dependency...........................................................4 Heater Voltage Dependency.............................................5 Gas Response....................................................................................5 Initial Action........................................................................5Reliability Long Term Characteristics.............................................................6 Durability to Hydrogen.......................................................................6 Durability to Sulphur Dioxide...........................................................6 Durability to Nitrogen Dioxide.........................................................7 Durability to HMDS....................................................................7 Effects of Air Flow.............................................................................7Cautions (8)a n I S O 9001 c o m p a n yIMPORTANT NOTE: OPERATING CONDITIONS IN WHICH FIGARO SENSORS ARE USED WILL VARY WITH EACH CUSTOMER’S SPECIFIC APPLICATIONS. FIGARO STRONGLY RECOMMENDS CONSULTING OUR TECHNICAL STAFF BEFORE DEPLOYING FIGARO SENSORS IN YOUR APPLICATION AND, IN PARTICULAR, WH EN CUSTOMER’S TARGET GASES ARE NOT LISTED H EREIN. FIGARO CANNOT ASSUME ANY RESPONSIBILITY FOR ANY USE OF ITS SENSORS IN A PRODUCT OR APPLICATION FOR WHICH A SENSOR HAS NOT BEEN SPECIFICALLY TESTED BY FIGARO.1. Basic Information and Specifications 1-1 Features* Linear output * Compact size* Small sensitivity to alcohol* Sensitive to hydrogen, methane, and LP gas * Meets RoHS requirements 1-2 Applications* Hydrogen and combustible gas leak detectors for fuel cell applications1-3 StructureFigure 1 shows the structure of TGS6812. The sensor is comprised of two elements: element (D) which is sensitive to combustible gases, and a reference element (C) which does not have sensitivity to combustible gases. The sensing element (D) is made of alumina doped with catalysts, while the reference element (C) is made of alumina. Both coils are made of Pt wire, and the wires of both elements (D) and (C) are connected to nickel pins No. 2 & 3 and No. 1 & 4 respectively. The sensor base and cap are made of reinforced Polybutylene Terephthalate (PBT). The upper opening in the cap is covered with a double layer of 100 mesh stainless steel gauze (SUS316). The TGS6812 utilizes a zeolite filter inside the cap for reducing the influence of interference gases.1-4 Basic measuring circuitThe T GS6812 i s c omprised o f t wo e lements: 1) e lement (D) which is sensitive to combustible gases and 2) a reference element (C) which is not sensitive to combustible gases. These elements are installed into a “Wheatstone Bridge”. A variable resistor should be adjusted so that the bridge will produce a stable baseline signal when in an environment free of combustible gases. When combustible gases are present, they will be combusted on the detecting element, causing its temperature to rise. Accordingly the resistance of this element will increase. This results in an “out-of-balance” signal across the bridge and a corresponding change in output voltage which can be measured.Fig. 1 - Sensor structureFig. 2 - Basic measuring circuitTop viewSide viewu/m = mmCapBottom viewBaseDetector sideCompensator side<Pin connection>1-4 : Compensator 2-3 : Detector1-5 Circuit & operating conditionsThe ratings shown below should be maintained at all times to insure stable sensor performance:1-6 Specifications NOTE 1Mechanical Strength:The sensor shall have no abnormal findings in its structure and shall satisfy the above electricalspecifications after the following performance tests: Vibration - Drop test -frequency:10~150H z, accel-eration: 2G, duration:10 times, direction: three dimensions drop onto a cement floor from a height of 250mm, repeated 5 timesNOTE 1:Sensitivity characteristics are obtained under the following standard test conditions:(Standard test conditions)Temperature and humidity: 20 ± 2˚C, 65 ± 5% RH Circuit conditions:V H = 3.0±0.05V AC/DC Preheating period: 30 seconds or more under standard circuit conditions 1-7 DimensionsFig. 3 - Sensor dimensionsAll sensor characteristics shown in this brochurerepresent typical characteristics. Actualcharacteristics vary from sensor to sensor andfrom production lot to production lot. The onlycharacteristics warranted are those shown inthe Specification table above.-101020304050020*********Relative humidity (%RH)2-2 Temperature dependencyFigure 5 shows the temperature dependency ofTGS6812 at 65%RH in 10%LEL of methane, LP gas,and hydrogen. Since the temperature dependencyof element (D) is compensated by element (C), thetemperature dependency of sensor output in therange from -10˚C to +70˚C is very small.2-3 Humidity dependencyFigure 6 shows the relative humidity dependencyof TGS6812 under constant temperature of 20˚C in10%LEL of methane, LP gas, and hydrogen. Thisdata demonstrates that the humidity dependency ofTGS6812 is negligible as humidity varies.Fig. 4 - TGS6812 sensitivity to various gasesFig. 6 - TGS6812 humidity dependency-10010203040502.902.953.003.05 3.10Operating voltage (V)2-4 Heater voltage dependencyFigure 7 shows the change in the sensor output according to variations in the heater voltage (V H ).Note that 3.0±0.1V as a heater voltage must be maintained because variance in applied heater voltage will cause the sensor’s characteristics to be changed from the typical characteristics shown in this brochure.2-5 Gas responseFigure 8 shows the change pattern of sensor output (Vout) for TGS6812 when the sensor is inserted 4000ppm of hydrogen.As these charts display, the sensor’s response speed to the presence of gas is extremely quick.2-6 Initial actionnormal air and later energized in clean air.warm-up process is called “Initial Action”.powering on, it is recommended that an initial delay circuit be incorporated into the detector’s design. This is especially recommended for intermittent-operating devices such as portable gas detectors.Fig. 7 - Heater voltage dependencyFig. 8 - Gas responseFig. 9- Initial action-1010201020-101020period.3-2 Durability to hydrogenconcentration exposure to hydrogen gas. The measurement was taken, the sensor was exposed to 1% of H 2 for over 2000 hours. At each measurement point, the sensor was removed from H 2measuring sensor output.characteristics after exposure to high concentrations of hydrogen.3-3 Durability to sulphur dioxideFigure 12 shows the effect on TGS6812 of exposure to SO 2. The initial point of the graph shows the value of sensor output prior to SO 2 exposure. After the initial measurement was taken, the sensor was exposed to 25ppm of SO 2 for over 2400 hours in total. At each measurement point, the sensor was removed from SO 2 and energized in normal air for 10 hours prior to measuring the sensor output.The data demonstrates that TGS6812 shows stable characteristics after exposure to SO 2.Fig. 11 - Durability to hydrogenFig. 12 - Durability to SO 2-101020-101020characteristics after exposure to NO 2. 3-5 Durability to HMDSFigure 14 shows the effect on TGS6812 of exposure to HMDS. The initial point of the graph shows the value of sensor output prior to HMDS exposure. After the initial measurement was taken, the sensor was exposed to 10ppm of HMDS for one hour in total. At each measurement point, the sensor was removed from HMDS and energized in normal air for 1 hour prior to measuring the sensor output.This data demonstrates that TGS6812 shows stable characteristics after exposure to HMDS.3-6 Effects of Air FlowTable 1 shows how the sensor is affected by airflows (refer to Fig. 15 for illustration of airflows in Table 1). This data demonstrates that there is no significant influence on the sensor by an air flow of 3.1 meters/sec.Fig. 14 - Durability to HMDSFig. 15 - Air flow testing direction (ref. Table 1)Table 1 - Effects of air flow on output voltage4 Cautions on Usage of Figaro Gas Sensors4-1 Situations which must be avoided1) Exposure to silicone vaporsIf silicone vapors adsorb onto the sensor’s surface, the sensing material will be coated, irreversibly inhibiting sensitivity. Avoid exposure where silicone adhesives, hair grooming materials, or silicone rubber/putty may be present.2) Highly corrosive environmentHigh density exposure to corrosive materials such as H2S, SOx, Cl2, HCl, etc. for extended periods may cause corrosion or breakage of the lead wires or heater material.3) Contamination by alkaline metalsSensor drift may occur when the sensor is contaminated by alkaline metals, especially salt water spray.4) Contact with waterSensor drift may occur due to soaking or splashing the sensor with water.5) FreezingIf water freezes on the sensing surface, the sensing material would crack, altering characteristics.6) Application of excessive voltageIf higher than specified voltage is applied to the sensor, the lead wires and/or sensor elements may be damaged or sensor characteristics may drift, even if no physical damage or breakage occurs.7) Operation in zero/low oxygen environment TGS6812 requires the presence of a certain amount of oxygen in its operating environment in order to generate a combustion reaction of gas on the sensor’s surface. It cannot properly operate in a zero or low oxygen content atmosphere.8) Excessive exposure to alcoholIf TGS6812 is exposed to high concentrations of alcohol (such as 10,000ppm or more) for a long period, the filter may become saturated. In this case, the sensor would show a lower resistance in alcohol than indicated in Figure 4.9) VibrationExcessive vibration may result in zero drift or cause the sensor or lead wires to resonate and break. Usage of compressed air drivers/ultrasonic welders on assembly lines may generate such vibration, so tests should be conducted to verify that there will be no influence on sensor characteristics.10) ShockZero drift and breakage of lead wires may occur if the sensor is subjected to a strong shock. To avoid shock, please keep the sensor in the original packing foam during storage.4-2 Situations to be avoided whenever possible1) Water condensationLight condensation under conditions of indoor usage should not pose a problem for sensor performance.H owever, if water condenses on the sensor’s surface and remains for an extended period, sensor characteristics may drift.2) Usage in high density of gasSensor performance may be affected if exposed to a high density of gas for a long period of time, regardless of the powering condition.3) Storage for extended periodsWhen stored without powering for a long period, the sensor may show a reversible drift in resistance according to the environment in which it was stored. The sensor should be stored in a sealed bag containing clean air; do not use silica gel. Note that as unpowered storage becomes longer, a longer preheating period is required to stabilize the sensor before usage. 4) Long term exposure in adverse environment Regardless of powering condition, if the sensor is exposed in extreme conditions such as very high humidity, extreme temperatures, or high contamination levels for a long period of time, sensor performance will be adversely affected.5) SolderingIdeally, sensors should be soldered manually.H owever, wave soldering can be done under the following conditions:a) Suggested flux: rosin flux with minimal chlorineb) Speed: 1-2 meters/min.c) Preheating temperature: 100±20˚Cd) Solder temperature: 250±10˚Ce) Up to two passes through wave soldering machine allowed Results of wave soldering cannot be guaranteed if conducted outside the above guidelines since someFigaro USA Inc. and the manufacturer, Figaro Engineering Inc. (together referred to as Figaro) reserve the right to make changes without notice to any products herein to improve reliability , functioning or design. Information contained in this document is believed to be reliable. H owever, Figaro does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights, nor the rights of others.Figaro’s products are not authorized for use as critical components in life support applications wherein a failure or malfunction of the products may result in injury or threat to life.flux vapors may cause drift in sensor performance similar to the effects of silicone vapors.。
日本费加罗FIGARO一氧化碳传感器 TGS2442气体检测仪 气体泄漏报警器
地址：广东省深圳市龙华新区牛栏前大厦Ｃ５０７ 蒋小姐：１３４ ２８７６ ２６３１ 电话：８６ ７５５－８５２５８９００ 网址：ｗｗｗ．ｓｉｎｇｏａｎ．ｃｏｍ ｗｗｗ．ｓｉｎｇｏａｎ．ｃｏｍ．ｃｎ ｗｗｗ．ｓｈｅｎｇｕｏａｎ．ｃｏｍ
Circuit voltage (VC) is applied across the sensing element which has a resistance (Rs) between the sensor’s two electrodes (pins No. 2 and No. 3) and a load resistor (RL) connected in series. The sensing element is heated by the heater which is connected to pins No. 1 and No. 4. Heating cycle--The sensor requires application of a 1 second heating cycle which is used in connection with a circuit
Sensor resistance
Rs
13.3kΩ ~ 133kΩ in 100ppm of carbon monoxide
45o
Sensitivity (change ratio of Rs)
β
0.13 ~ 0.31
4
1 �5.1±0.1
Test gas conditions
Standard test conditions
Features:
TGS 2442 - for the detection of Carbon Monoxide
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
Ps =
VC2 x Rs (Rs + RL)2
深圳市深国安电子科技有限公司
地址：广东省深圳市龙华新区牛栏前大厦Ｃ５０７ 蒋小姐：１３４ ２８７６ ２６３１ 电话：８６ ７５５－８５２５８９００ 网址：ｗｗｗ．ｓｉｎｇｏａｎ．ｃｏｍ ｗｗｗ．ｓｉｎｇｏａｎ．ｃｏｍ．ｃｎ ｗｗｗ．ｓｈｅｎｇｕｏａｎ．ｃｏｍ
2 Sensor Base: Alumina ceramic
3 Flame Arrestor: 100 mesh SUS 316 double gauze
Pin Connection and Basic Measuring Circuit: The numbers shown around the sensor symbol in the circuit diagram at the right correspond with the pin numbers shown in the sensor's structure drawing (above). When the sensor is connected as shown in the basic circuit, output across the Load Resistor (VRL) increases as the sensor's resistance (Rs) decreases, depending on gas concentration.
TGS 821 - Special Sensor for Hydrogen Gas
Features:
Applications:
* High sensitivity and selectivity to hydrogen gas
* Good repeatability in measurement and excellent stability
Sensor Resistance (Rs) is calculated by the following formula:
Rs
=
(
VC VRL
-1) x RL
Power dissipation across sensor electrodes (Ps) is calculated by the following formula:
The TGS 821 has high sensitivity and selectivity to hydrogen gas. The sensor can detect concentrations as low as 50ppm, making it ideal for a variety of industrial applications.
100 Air
10
Methane Ethanol
Temperature/Humidity Dependency:
3
2
1
0.1
ide
100
1000
Concentration (ppm)
Hydrogen 10000
1 0.9 0.8 0.7
0.6
0.5 -20 -10
Rs = Sensor resistance of displayed gases at various concentrations
Ro = Sensor resistance at 100ppm of hydrogen
The figure below represents typical temperature and humidity dependency characteristics. Again, the Y-axis is indicated as sensor resistance ratio (Rs/Ro), defined as follows:
Structure and Dimensions:
19.5 ± 0.5 um : mm
6.5 ± 0.2
3.0 ± 0.2 23.0 ± 1.0
1.0 ± 0.05 6
5
1 2
11.0 ± 0.2
4
3
9.5 ± 0.3
13.5
+ 0.3 - 0.2
45˚
45˚
1 Sensing Element: SnO2 is sintered to form a thick film on the surface of an alumina ceramic tube which contains an internal heater.
Test Gas Conditions: 20°±2°C, 65±5%R.H.
Circuit Conditions:
VC = 10.0±0.1V (AC or DC),
VH = 5.0±0.05V (AC or DC),
RL = 4.0kΩ±1%
Preheating period before testing: More than 7 days
Rs/Ro
Log[Rs(H2 100ppm)/Rs(H2 1000ppm)] Log (1000ppm/100ppm)
0.60 ~ 1.20
Heater Resistance
Heater Power Consumption
RH
Room temperature
PH
VH=5.0V
38.0 ± 3.0Ω 660mW (typical)
Standard Test Conditions:
TGS 821 complies with the above electrical characteristics
when the sensor is tested in standard conditions as specified
below:
0
10
20
30
Ambient Temperature (°C)
R.H. 35% 65% 95%
40
50
Rs/Ro Rs/Ro
深圳市深国安电子科技有限公司
地址：广东省深圳市龙华新区牛栏前大厦Ｃ５０７ 蒋小姐：１３４ ２８７６ ２６３１ 电话：８６ ７５５－８５２５８９００ 网址：ｗｗｗ．ｓｉｎｇｏａｎ．ｃｏｍ ｗｗｗ．ｓｉｎｇｏａｎ．ｃｏｍ．ｃｎ ｗｗｗ．ｓｈｅｎｇｕｏａｎ．ｃｏｍ
The sensing element of Figaro gas sensors is a tin dioxide (SnO2) semiconductor which has low conductivity in clean air. In the presence of a detectable gas, the sensor's conductivity increases depending on the gas concentration in the air. A simple electrical circuit can convert the change in conductivity to an output signal which corresponds to the gas concentration.
Load Resistance
RL
Variable
0.45kΩ min.
Electrical Characteristics: Item
Symbol
Condition
Specification
Sensor Resistance
Rs
Hydrogen at 100ppm/air
1kΩ ~ 10kΩ
Change Ratio of Sensor Resistance
The figure below represents typical sensitivity char-acteristics, all data having been gathered at standard test conditions (see reverse side of this sheet). The Y-axis is indicated as sensor resistance ratio (Rs/Ro) which is defined as follows:
* Uses simple electrical circuit * Ceramic base resistant to severe
environment
* Hydrogen gas detection for: - transformer maintenance - batteries - steel industry usage - etc.
Standard Circuit Conditions:
Basic Measuring Circuit:
Item
Symbol
Rated Values
Remarks
Heater Voltage
VH
5.0±0.2V
AC or DC
Circuit Voltage
VC
Max. 24V
DC only Ps≤15mW
Rs = Sensor resistance at 100ppm of hydrogen at various temperatures/humidities
Ro = Sensor resistance at 100ppm of hydrogen at 20°C and 65% R.H.
Sensitivity Characteristics: