TGS2602空气质量传感器(日本费加罗FIGARO)
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。
figaro选型表
型号 TGS2600-B00 TGS2602-B00 TGS2104 TGS2201 TGS813 TGS816 TGS2610-DOO TGS2610-J00 TGS2611-E00 TGS2611-C00 TGS6810 TGS6812 TGS2442-B00 TGS5042 TGS3870 测量气体 量程(ppm) 香烟气，油烟，氢气,酒精，甲烷，CO 1～30 甲苯，酒精，NH3，有机溶剂，挥发等 1～30 汽油机尾气(H2,CO,HC) 10～1000 汽油/柴油机尾气(NO,NO2) 10～1000/0.1～10 易燃气体(甲、丙、丁烷) 500～10,000 易燃气体(甲、丙、丁烷)耐高温200度 500～10,000 易燃气体(丁烷)<圆型,酒精过滤> 500～10,000 易燃气体（丁烷）<方型> 500～10,000 天然气(甲烷)<圆型,酒精过滤> 天然气(甲烷)<圆型> 可燃气体（催化燃烧） 可燃气体（催化燃烧） 一氧化碳 一氧化碳（电化学）UL,ROHS，5年寿命 甲烷/一氧化碳 500～10,000 500～10,000 0-100%LEL 0-100%LEL 30～1,000 0-10000 500-12500/50-1000 50～5,000 50～5,000 30~1000 5～100 30～300 100～3,000 100～3,000 100～3,000 0-80mg/L水中溶解氧 灵敏度(电阻比) 0.3～0.6 0.15～0.5 0.3～0.6 0.35/2.5 0.60±0.05 0.60±0.05 0.53±0.05 0.53±0.05 0.60±0.06 0.60±0.06 1% 1% 0.13~0.31 15ppm 0.5-0.65/0.1-0.6 0.35±0.1 0.40±0.1 0.6~1.20 0.3～0.6 0.4～0.70 0.30±0.10 0.40±0.15 0.50～0.65 ±5%FS ±1%FS 0～30% 0～100% 0～100% 0～100% 350~50000ppm 350~10000ppm 400～45000ppm 400～9000ppm 400～4000ppm ±1% ±1% ±2% ±20%@1000ppm ±20%@1000ppm 20%FS 20%FS 20%FS 典型应用 空气清新机，换气空调 空气清新监测仪 汽车尾气检测 汽车尾气检测 家庭燃气泄漏报警器 工业用易燃, 易爆 民用/工业用易燃，易爆 民用/工业用易燃，易爆 气体探测气，报警器 气体探测气，报警器 民用易燃，易爆 工业用易燃, 易爆 室内气体报警器 半工业电化学式,CO探测器 便携/在线报警器 酒精探测器 醉酒度测试仪 有毒有害气体报警器 电冰箱气体探测 卤素检漏仪， 氟利昂检测器 卤素检漏，制冷剂泄露探测 水质检测控制 不受CO2, CO, H2S, NOx, H2影响，用于氧培养箱，食 品工业，氧探测器，温室 氧气分析仪 氧气分析仪 氧气分析仪 农业大棚，孵化设备 农业大棚，孵化设备 IAQ，农业大棚 IAQ，农业大棚 IAQ，农业大棚
空气质量传感器TGS2600在空气质量监测中的应用
空气质量传感器TGS2600在空气质量监测中的应用引言近年来，空气质量监测越来越受到人们的重视，国内外的众多企业与研究机构在气体传感器研发领域取得了长足进步，目前气体传感器正向集成化、智能化、多参数检测的方向迅速发展。
日本FIGARO公司开发生产的系列半导体气体传感器代表了目前气体传感器领域最新的水平，为研究开发空气质量监测系统创造了有利条件，提供了一条简单而实用的途径。
1 半导体气敏传感器及其特性半导体气敏传感器是利用待测气体与半导体（主要是金属氧化物）表面接触时，产生的电导率等物性变化来检测气体。
半导体气敏器件被加热到稳定状态下，当气体接触器件表面而被吸附时，吸附分子首先在表面自由地扩散（物理吸附），失去其运动能量，其间的一部分分子蒸发，残留分子产生热分解而固定在吸附处（化学吸附）。
这时，如果器件的功函数小于吸附分子的电子亲和力，则吸附分子将从器件夺取电子而变成负离子吸附。
具有负离子吸附倾向的气体最典型的是O2，称为氧化型气体或电子接收性气体。
如果器件的功函数大于吸附分子的离解能，吸附分子将向器件释放电子，而成为正离子吸附。
具有这种正离子吸附倾向的气体有H2、CO、碳氢化合物和酒类等，称为还原型气体或电子供给性气体。
目前可用于检测气体的敏感元件有很多种，如SnO2，ZnO，Fe2O3和气敏元件等。
它们共同的特点是可以检测多种不同的气体，但对气体的选择性较差。
这种非单一选择性是由其敏感机理所决定的，虽然可以采用添加适量的贵重金属Pt、Pd等方法改善其选择性，但仍然会对其它气体有一定的敏感度。
2 半导体空气传感器TGS26002.1 TGS2600 构成和工作原理空气传感器是半导体气敏传感器中的一种，它构造简单，由传感器基板，气敏元件和传感器盖帽组成。
气敏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。
利用加热器加热，以侦测气体附着于金属氧化物表面而产生的电阻值的变化。
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。
空气质量传感器(异味传感器)TGS2600应用资料
1—30ppm H2
5.0±0.2VDC/AC(直/交流)
5.0±0.2 Ps≤15mW
V DC
变量
≥0.45kΩ
室温条件下大约 83 Ω
42±4mA
210mW VH=5.0V DC
10K-90 kΩ在空气中
0.3-0.6
RS (10 ppm,氢气) RS (空气)
在20±2°C, 65±5%RH的正常空气
TGS2600 —空气质量检测
特征: ★低功耗 ★对气态空气污染物灵敏度高 ★长寿命, 低成本 ★应用电路简单 ★尺寸小
应用： ★空气清新机 ★气流控制 ★空气质量检测
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.
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
和线路电压 VC。加热器电压 VH 加于集成加热器上 以保持传感器在一个特定的最佳感应温度。电路电压 VC 被加载以便于测量与感应元件串联的负载电阻电压 Vout。此传感器有极性所以电路电压 VC 必须是直流。 可以用一个公共的电源来同时供给 VH 和 VC 以满足传 感器的电气需求。负载电阻 RL 的选择要使报警门限电 压最优化，并使半导体器件的功耗小于 15mw。当目标 气体存在时，传感器功耗在 RS 与 RL 相等时最大。
VC = 5.0±0.01V DC VH = 5.0±0.05V DC
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。
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.。
日本Figaro传感器
日本Figaro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Figaro传感器KE-25 KE-50信息日本Figaro传感器KE-25 KE-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Figaro传感器KE-25 KE-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Figaro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-25 KE-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-25 KE-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；精度氧气传感器KE-25：±1％（全量程）；氧气传感器KE-50：±2％（全量程）。
日本FIGARO 费加罗KE-25氧气传感器5年寿命 KE-50长寿命10年氧气检测探头
Sensitivity characteristics (typical values under std.test conditions)Response time (typical)The GS Oxygen Sensor KE series (KE-25 and KE-50) is a unique galvanic cell type oxygen sensor which was developed in Japan in 1985. Its most notable features are long life expectency, excellent chemical durability, and it is not influenced by CO 2. The KE series oxygen sensor is ideal to meet the ever-increasing demand for oxygen monitoring in various fields such as combustion gas monitoring, the biochemical field, medical applications, domestic combustion appliances, etc.Features:* Long lifeKE-25 - 5 years / KE-50 - 10 years in ambient air * Virtually no influence from CO 2, CO, H 2S, NOx, H 2* Low cost* Operates in normal ambient temperatures * Stable output signal* No external power supply required for sensoroperation* No warmup time is requiredGS Oxygen SensorsApplications:* Medical - Anesthetic instruments, respirators,oxygen-enrichers* Biotechnology - Oxygen incubators* Food industry - Refrigeration, greenhouses* Safety - Air conditioners, oxygen detectors, firedetectorsREV: 08/03SpecificationsNotes:1) When calibrated at both 0% and 100% of O 2, accuracy in the range from 0-100% O 2 shall be within ±1% of full scale for KE-25 and ±2% of full scale for KE-50.2) Va = output voltage at 21% O 2 V 0 = output voltage at 0% O 2V 100 = output voltage at 100% O 23) Va = output voltage at 25˚C V H = output voltage at 40˚C V L = output voltage at 5˚C4) Sensors should be used under conditions where the air exchange is greater than 200~300ml per minute in order to obtain the response speed as specified in Table 1.22.7±0.5KE-25/KE-50 standard versionKE-25F1 (w/o flange)KE-25F3 (threaded top)KE-25F4 (O-ring top)22.7±0.522.7±0.5。
空气质量传感器TGS2602
Applications:Features:TGS 2602 - for the detection of Air ContaminantsThe figure below represents typical sensitivity characteristics,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:Rs = Sensor resistance in displayed gases atvarious concentrationsRo = Sensor resistance in fresh air 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 in fresh airat various temperatures/humiditiesRo = Sensor resistance in fresh airat 20°C and 65% R.H.* Air cleaners* Ventilation control * Air quality monitors * VOC monitors * Odor monitorsThe sensing element is comprised of a metal oxide semiconductor layer formed on the alumina substrate of a sensing chip together with an integrated heater.In the presence of detectable gas, sensor conductivity increases depending on 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 2602 has high sensitivity to low concentrations of odorous gases such as ammonia and H 2S generated from waste materials in office and home environments. The sensor also has high sensitivity to low concentrations of VOCs such as toluene emitted from wood finishing and construction products.Figaro also offers a microprocessor (FIC02667) which contains special soft-ware for handling the sensor's signal for appliance control applications.Due to miniaturization of the sensing chip, TGS 2602 requires a heater current of only 42mA and the device is housed in a standard TO-5 package.* High sensitivity to VOCs and odorous gases * Low power consumption* High sensitivity to gaseous air contaminants * Long life* Uses simple electrical circuit * Small sizeStructure and Dimensions:Basic Measuring Circuit:The sensor requires two voltage inputs:heater voltage (V H ) and circuit voltage (V C ). The heater voltage (V H ) is applied to the integrated heater in order to maintain the sensing element at a specific temperature which is optimal for sensing. Circuit voltage (V C ) is applied to allow measurement of voltage (Vout) across a load resistor (R L ) which is connected in series with the sensor.DC voltage is required for the circuitvoltage since the sensor has a polarity.A common power supply circuit can be used for both V C and V H to fulfill the sensor's electrical requirements. The value of the load resistor (R L ) should be chosen to optimize the alarm threshold value, keeping power consumption (P S )of the semiconductor below a limit of 15mW. Power consumption (P S ) will be highest when the value of Rs is equal to R L on exposure to gas.The value of power consumption (P S ) can be calculated by utilizing the following formula:P S =Sensor resistance (Rs) is calculated with a measured value of Vout by using the following formula:R S =- R LSpecifications:V C x R L Vout(V C - Vout)2R SPin connection: 1: Heater2: Sensor electrode (-) 3: Sensor electrode (+) 4: HeaterAll sensor characteristics shown in this brochure represent typical characteristics. Actual characteristics vary from sensor to sensor. The only characteristics warranted are those in the Specification table above.。
日本费加罗FIGARO 甲烷气体预校准模块 FSM-T-01
FSM-T-01 甲烷气体预校准模块
特点:
应用:
* 气体浓度以通讯方式数字化定量输出 * 可编程设置报警点输出 * 工厂校准，温度补偿 * 体积小，低成本
FSM-T-01是甲烷气体报警器的预校准模块。
此模块 采用TGS2611传感器配合优化的经典电路测量甲烷气体 浓度，经过天津费加罗高精度的标定设备进行预校准，并 以成熟的老化工艺生产。
本模块设计旨在最大限度地为 用户节省开发及生产成本，让用户可以更容易，更简单地 制造出民用天燃气气体报警器。
* 甲烷气体报警器的前端方案
* 简易甲烷气体报警输出
引脚连接：
考虑方便用户使用，本模块设计有两种不同的接口。
TTL 电 平的异步通讯接口允许用户用非常简单的命令读取实时气体 浓度，亦可通过通讯编程设定不同的报警阈值。
当气体浓度 达到设定值时，Alarm 端子上会自动产生报警输出信号。
此外，本模块设计为插口式连接，小巧灵活，可以很方便地 周期性更换传感器。
对于某一块主板，也可以通过简单的插 拔更换不同的模块，实现甲烷或其他气体探测报警的功能。
说明：针对用户的不同需要，不同的被测气体、精度等级或模块的接口形式可以按照用户的需求单独定制，具体可咨询我们的相关技术人员。
规格：
结构及尺寸（单位mm ）：
在此产品规格书中所显示的都是传感器的典型特性，实际的指标根据用户的 需求或有不同。
针对本模块的典型应用电路及通讯规约详见《FSM-T-01用户技术手册》。
FIGARO费加罗TGS8100检测甲醛、VOC、酒精等贴片型空气质量传感器芯片
PRODUCT INFORMATIONApplications:Features:TGS 8100 - for the detection of Air ContaminantsThe figure below represents typical sensitivity characteristics, 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: Rs = Sensor resistance in displayed gases at various concentrationsRo = Sensor resistance in fresh air 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 in fresh air at various temperatures/humidities Ro = Sensor resistance in fresh airat 20°C and 65% R.H.* Indoor air quality monitors * Air cleaners* Ventialtion control* Kitchen range hood controlThe sensing element is comprised of a sensing chip and an integrated heater formed on a silicon substrate using MEMS technology, and a metal-oxide semiconductor layer formed on the sensing chip. The device is housed in a surface-mount ceramic package. Due to miniaturization of the sensing chip, TGS 8100 requires a heater power consumption of only 15mW, and is suitable for low-power equipment and battery-operated instruments. In the presence of detectable gas, sensor conductivity increases depending on 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 8100 has high sensitivity to low concentrations of gaseous air contaminants such as cigarette smoke and cooking odors. By utilizing the change ratio of sensor resistance from the resistance in clean air as relative response, human perception of air contaminants can be simulated and practical air quality control can be achieved.* Surface mount package * Low power consumption* High sensitivity to cigarette smoke, cookingodors, and gaseous air contaminants* Long life * Low costTemperature/Humidity Dependency:Sensitivity Characteristics:0.010.11101101001000Gas concentration (ppm)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, 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.Structure and Dimensions:The value of power consumption (P S ) can be calculated by utilizing the following formula:P S = Sensor resistance (Rs) is calculated witha measured value of Vout by using the following formula:R S = - R L Specifications: (tentative)V C x R L Vout(V C - Vout)2R S All sensor characteristics shown in this brochure represent typical characteristics. Actualcharacteristics vary from sensor to sensor. The only characteristics warranted are those in the Specification table above.Side viewu/m = mmPin connections: 1: Heater2: Sensor electrode (-) 3: Sensor electrode (+) 4: Heater。
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.。
tgs2602
TGS2602特征应用对VOCS和有气味气体有很高的灵敏度空气清新机低功耗空气流通控制对于气态的空气污染有高的灵敏度空气质量监测长寿命低价位VOC 监控应用简单气味气体监控TGS2602传感器的感应元件由一个在氧化铝基板上的金属氧化物半导体层构成的传感芯片与一个和它集成在一起的加热器构成当存在可检测气体时传感器的半导体的电导率将随着空气中的被测气体浓度增加而增加一个简单的电路就可以将这种响应气体浓度的电导率的变化转换为一个输出信号TGS2602 对低浓度的有气味气体有很高的灵敏度如氨气及办公室和家庭的环境里的废品所产生的H2S TGS2602也对低浓度的VOCS有很高的灵敏度如从木制品和建筑物中所散发出来的甲苯气体FIGARO还提供一个微处理器他包含有一个特殊的应用软件可以作为设备的专用软件来处理传感器的信号下左图所示为TGS2602典型的灵敏度特征所有的数据都收集于标准的测试条件Y轴表示TGS2602传感器的电阻变化率RS/R0RS R0的定义如下RS=传感器在各种不同的气体的不同的浓度下的阻抗R0= 传感器在清新空气中的阻抗下右图所示的是TGS2602对温度与湿度的依赖特征Y轴代表的是传感器的阻抗变化率RS/R0RS R0的定义如下RS=传感器在清新空气中在各种温度/湿度条件下的阻抗R0=传感器在清新空气中在20C温度相对湿度65%下的阻值基本测量电路TGS2602传感器要求有两个输入加热电压VH 和线路电压VC 加热电压VH 加于与传感器集成在一起的加热器上以保持传感器在一个特定的温度使传感器工作在这个特定的最佳温度因为传感器有极性所以供电电压VC 必须是直流线路电压VC 用来通过一个与传感器串联的负载电阻RL 来测量电压VRL 可以用一个公共的电源来同时供给VH 和VC 来满足传感器的电气要求负载电阻RL 的选择要使报警门限电压最优化并使传感器的半导体的功耗小于15mw 的限定值当传感器暴露在气体中使得RS 的值与RL 的值相等时传感器的功耗最大规格书型号 TGS2602 传感元素类型 D1标准封装 TO-5金属容器目标气体空气中的污染物 典型的测量范围 1~10ppm H2加热电压 VH 5.00.2VDC/AC 线路电压 VC 5.00.2VDC PS 15mw标准线路条件 负载阻抗 RL 可变 PS 15mw 加热阻抗 RH 约59欧室温加热电流 IH 565Ma 加热功耗 PH 280mw 典型值传感器阻抗 RS 10~100K空气在标准测试条件下的电器特征 灵敏度RS 的变化率 0.15~0.5 Rs 10ppm ETOH /RS 空气) 测试气体一般空气202C 655%RH 线路条件 VC=5.00.1VDC 标准测试条件 测试前条件周期 7天功耗PS 可以用下面的公式计算出来 传感器的阻抗值RS 可以用下面的公式 通过测量VRL 计算出来PS=VC-VRL 2/RS RS=VC-VRL /VRL *RL。
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
室内空气质量净化器的设计
室内空气质量净化器的设计摘要：室内空气中的微粒、细菌、病毒和其它有害物质日积月累地损害着人们的身体健康。
随着生活水平的提高，越来越多的人对室内环境状况提出了更高的要求，室内空气净化技术成为了环保领域的一个新的课题。
本设计针对室内环境的技术指标需求，研究并设计出一种新型的、利用紫外线杀菌消毒的空气净化器控制系统。
关键词：空气净化；lm3s1f16；cortex-m3中图分类号：tp3 文献标识码：a 文章编号：1009-3044（2013）05-1202-02室内环境泛指人们生活、劳动以及其他相对封闭的公共场所等。
人的一生大约有80%～90%的时间是在室内度过的，因此室内空气质量的好坏对人们的身体健康明显高于室外环境。
目前，改善室内空气质量的现行方法分为三种：源控制、通风和空气净化。
源控制是改善空气质量最明显的方式，通风可减少室内污染物的浓度，空气净化是用来控制粒状物质、气体污染物，净化除尘系统具有着不可比拟的有效性和可靠性。
空气净化器主要包括机械过滤吸附式、静电式、负离子式、紫外光式等。
本设计中的净化器能够检测室内空气污染物的种类和浓度，实现紫外光线菌与通风功能的新型空气净化器，对室内空气净化技术的研究具有积极的意义。
1 系统结构本室内空气净化器从人居舒适度角度，对室内空气中的co，co2，h2s，o2，氨气以及甲醛等有毒有害气体信息实时采集，利用红外线热释电传感器监测测室内人群的移动，利用紫外线的照射破坏致病体的dna结构达到消毒灭菌的作用。
当空气中的有害气体浓度高于标准值时自动启动换气装置，加快室内外空气流动，改善室内空气质量质量。
本空气净化系统包含有对室内温度、湿度等环境信息数据的采集，数据处理在采用具有cortex-m3内核的arm芯片lm3s1f16上进行，数据处理结果反映在显示屏上，在测量数据超出已设定的标准时，系统根据不同的情况对室内空气进行相应的换气和紫外杀菌杀毒。
本系统的硬件部分主要由热释电红外检测模块、气体传感器阵列、信号调理电路、mcu对采集的数据进行分析和处理、显示模块、报警系统、紫外线杀毒和换气系统等组成。
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
TGS2602传感器调理电路采集气路设计及气体分析过程
图3 PID 传感器的调理电路
采样控制电路和二通阀的控制电路
恶臭气体检测的初步数学模型，我们选择 NE-NH3传感器的信号响应值来表示对氨类的恶臭气体检测，选择 NE-H2S 传感器的信号响应值来表示对硫化氢类的恶臭气体检测，选择 TGS2602 传感器的信号响应值来表示对挥发性有机物类的恶臭气体检测。下当恶臭气体检测装置测量某一气体时，对传感器阵列信号先进行预处理，并进行提取出相应的特征参数，然后根据各传感器的曲线方程，通过分析运算，得出被测气体浓度、成分、恶臭等级等信息。对 NE-NH3 传感器的响应信号分析，即可得出被测气体中氨气浓度值，硫化氢类和发性有机物类亦是如此。由于氨气、硫化氢和挥发性有机物都有各自对应的恶臭强度，在恶臭气体检测系统测量时，我们以挥发性有机物的恶臭强度为标准，以此识别出被测气体的恶臭等级。对于信号预处理，我们即可以手动选取稳态区域，也可以自动选取。手动选取与本文前面提到的方法一致，自动选取则采用比值方求取稳态均值作为预处理数据进行分析。 由于要完全实现自动选取，任务量较大，目前恶臭检测系统仍处于探索阶段，所以，我们采用简化的自动选取法。恶臭检测系统中信号分析的具体做法是：
（4）根据本章第一节中介绍的恶臭强度与恶臭浓度的关系式，将（3）中得出的VOC 气体浓度值作为输入，通过运算，得出最终被测气体所属恶臭等级。
（2）求被测气体中氨气和硫化氢的含量
将（1）中得到电化学式传感器的恶臭采样阶段的均值 Mean2，作为信号分析模型的输入。信号分析模型是相关传感器的曲线方程，通过 LabVIEW 中的公式节点编写程序，得到氨气、硫化氢的浓度值。
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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 o
R 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 )2
R S
V C V RL
R 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。
: mm。