0065(0185)温度传感器选型样本
温度传感器的选用
本部分主要讲述温度传感器选用时 需要注意的主要问题,以及温度传感器的 种类。
温度传感器选用时需考虑的主要问题
(1) 被测对象的温度是否需记录、报警和自动控 制,是否需要远距离测量和传送。
(2) 测温范围的大小和精度要求。 (3) 测温元件大小是否适当。 (4) 在被测对象温度随时间变化的场合,测温元
现的温度检测电路,该电 路非常简单,且易于实现, 并且适用于几乎所有类型 的单片机。其电路如右图
图中:
P1.0、P1.1和P1.2是单片机的3个I/O脚; RK为100k的精密电阻; RT为100K-精度为1%的热敏电阻;
所示:
R1为100Ω的普通电阻; C1为0.1μ的瓷介电容。
集成模拟温度传感器
温度传感器种类很多,通过正确地选择软件 和硬件,一定可以找到适合自己应用的传感 器。
利用单片机实现极简单的测温电路
单片机在电子产品中的应
用已经越来越广泛,在很
多的电子产品中也用到了
温度检测和温度控制,但
那些温度检测与控制电路
通常较复杂,成本也高,
本文提供了一种低成本的
利用单片机多余I/O口实
件的滞后能否适应测温要求。 (5) 被测对象的环境条件对测温元件是否有损害。 (6) 价格如保,使用是否方便。
热敏电阻器
许多热敏电阻具有负温度系数(NTC),也就是说温度下 降时它的电阻值会升高。在所有被动式温度传感器中, 热敏电阻的灵敏度(即温度每变化一度时电阻的变化)最高, 但热敏电阻的电阻/温度曲线是非线性的。
2、LM135/235/335温度传感器
LM135/235/335系列是美国国家半导体公司(NS)生产 的一种高精度易校正的集成温度传感器,工作特性类似 于齐纳稳压管。该系列器件灵敏度为10mV/K,具有小于 1Ω的动态阻抗,工作电流范围从400μA到5mA,精度为 1℃,LM135的温度范围为-55℃~+150℃,LM235的温 度范围为-40℃~+125℃,LM335为-40℃~+100℃。封装 形式有TO-46、TO-92、SO-8。该系列器件广泛应用于 温度测量、温差测量以及温度补偿系统中。
罗斯蒙特 0065 0185 传感器组件-快速安装指南-中文说明书
快速安装指南00825-0206-2654, Rev HB3 年 2021 月罗斯蒙特™ 0065/0185 传感器组件快速安装指南 3 年 2021 月内容关于本指南 (3)接线图 (4)传感器组件尺寸 (7)技术规格 (10)产品认证 (14)符合性声明 (25)中国 RoHS (27)/Rosemount1关于本指南本指南提供罗斯蒙特 0065 和 0185 型传感器的基本指导。
本指南不提供组态、诊断、维护、检修、故障排除、防爆、隔爆或本质安全 (I.S.) 安装的 说明。
如果订购的罗斯蒙特 0065 和 0185 要求组装到温度变送器上,则请参考相应的《快速安装指南》,了解有关组态和危险场所认证的信息。
1.1安全信息 警告爆炸可能会导致死亡 或严重受伤。
在易爆环境中安装本变送器时,请务必遵守适用的当地、国家和国际标准、规范及规程。
导线管/电缆入口除非另外标明,否则外壳中的导线管/电缆入口采用 ½–14 NPT 螺纹牙型。
标有“M20”的入口为 M20 × 1.5 螺纹牙形。
在具有多个导线管入口的装置上,所有入口都采用相同的螺纹牙形。
在封闭这些入口时,只能使用具有相容螺纹牙形的堵头、接头、密封接头或导线管。
物理接触未经授权的人员可能会对最终用户的设备造成明显受损和/或误组态。
这可能是有意或无意的,需要采取相应的防护措施。
物理安全措施是任何安全计划的重要部分,是保护您的系统的基础。
限制未经授权人员进行物理接触,以保护最终用户的资产。
这对于设施中使用的所有系统均是如此。
小心请参阅本《快速安装指南》文档的“产品认证”一节。
3 年 2021 月快速安装指南快速安装指南32接线图图 2-1: 罗斯蒙特 65 系列热电阻引线排列方式Wht Wht系列热电阻接线端子(端接代码 2 和 4)双元件(1)RedRed Wht321Red Red 65123456(1)接线端子上接线柱的颜色可能与连接到外壳的引线的颜色不匹配。
NTC热敏电阻、温度传感器产品选型方法与应用.
NTC热敏电阻/温度传感器产品选型方法与应用NTC是Negative Temperature Coefficient的缩写,意思是负的温度系数,泛指负温度系数很大的半导体材料或元器件,所谓NTC热敏电阻器就是负温度系数热敏电阻器。
它是以过渡金属氧化物为主要原材料,采用先进陶瓷工艺制造而成的。
这些金属氧化物材料都具有半导体性质,因为在导电方式上完全类似锗、硅等半导体材料。
温度低时,这些氧化物材料的载流子(电子和孔穴)数目少,所以其电阻值较高;随着温度的升高,载流子数目增加,所以电阻值降低。
NTC热敏电阻器在室温下的变化范围在100~1000000欧姆,温度系数-2%~-6.5%。
禾用这些特性,NTC热敏电阻器/温度传感器可广泛应用于温度测量、温度补偿、抑制浪涌电流等场合。
其阻值随温度变化的特性下:[A]、非线性的温度特性[B]、丫轴为对数坐标时非常接近实际的温度特性正:面方下以虑考要需器感传度/温阻电敏热CTN型选确、首先明确产品应用功能:1. 温度测量2. 温度补偿3. 浪涌电流抑制点击了解更多:温度测量、控制用NTC 热敏电阻器/温度传感器―― 工作原理和应用电路温度补偿NTC 热敏电阻器/温度传感器―― 工作原理和应用电路浪涌电流抑制NTC 热敏电阻器/温度传感器―― 工作原理和应用电路二.按产品应用场合分类:1. 汽车:VT 系列——汽车温度传感器用热敏电阻DTV 系列——汽车温度传感器用NTC 热敏芯片VTS 系列——交通工具温度传感器/温度开关2. 医疗:MT 系列——医疗设备温度传感器用NTC 热敏电阻DTM 系列——医疗温度传感器用NTC 热敏芯片IT 系列——电子温度计NTC 温度传感器3. 家电:TS 系列——NTC 温度传感器BT系列一一绝缘引线型NTC温度传感器4. 通讯:CT 系列——片式负温度系数热敏电阻AT系列一一非绝缘引线插件NTC热敏电阻5. 计算机及办公自动化设备:OT 系列——办公自动化NTC 热敏电阻/温度传感器GT系列一一玻璃封装NTC热敏电阻FT系列一一薄膜NTC热敏电阻6. 消费类电子:PT系列一一功率型(浪涌抑制)NTC热敏电阻AT系列一一非绝缘引线插件NTC热敏电阻BT系列一一绝缘引线型NTC温度传感器7. 集成电路/模块:DT 系列——高精度芯片NTC 热敏电阻三.明确产品工作温度范围―― 对应选择相应材料和封装形式:(一)热敏头封装形式:1. 环氧树脂封装:耐潮湿、绝缘强度高、工作温度—40C〜+ 125C2. 硅树脂封装:绝缘强度高、工作温度—40C〜+ 200E,耐潮湿性能一般3. 玻璃封装封装:耐潮湿、绝缘强度高、耐高温、工作温度—40C〜+ 350 °C。
温度传感器选型[整理版]
NTC 温度传感器选型选择温度传感器比选择其它类型的传感器所需要考虑的内容更多。
首先,必须选择传感器的结构,使敏感元件的规定的测量时间之内达到所测流体或被测表面的温度。
温度传感器的输出仅仅敏感元件的温度。
实际上,要确保传感器指示的温度即为所测对象的温度,常常是很困难的。
在大多数情况下,对温度传感器的选用,需考虑以下几个方面的问题:(1)被测对象的温度是否需记录、报警和自动控制,是否需要远距离测量和传送。
(2)测温范围的大小和精度要求。
(3)测温元件大小是否适当。
(4)在被测对象温度随时间变化的场合,测温元件的滞后能否适应测温要求。
(5)被测对象的环境条件对测温元件是否有损害。
(6)价格如何,使用是否方便。
容器中的流体温度一般用热电偶或热电阻探头测量,但当整个系统的使用寿命比探头的预计使用寿命得多时,或者预计会相当频繁地拆卸出探头以校准或维修却不能在容器上开口时,可在容器壁上安装永久性的热电偶套管。
用热电偶套管会显著地延长测量的时间常数。
当温度变化很慢而且热导误差很小时,热电偶套管不会影响测量的精确度,但如果温度变化很迅速,敏感元件跟踪不上温度的迅速变化,而且导热误差又可能增加时,测量精确度就会受到影响。
因此要权衡考虑可维修性和测量精度两个因素。
热电偶或热电阻探头的全部材料都应与可能和它们接触的流体适应。
使用裸露元件探头时,必须考虑与所测流体接触的各部件材料(敏感元件、连接引线、支撑物、局部保护罩等)的适应性,使用热电偶套管时,只需要考虑套管的材料。
电阻式热敏元件在浸入液体及多数气体时,通常是密封的,至少要有涂层,裸露的电阻元件不能浸入导电或污染的流体中,当需要其快速响应时,可将它们用于干燥的空气和有限的几种气体及某些液体中。
电阻元件如用在停滞的或慢速流动的流体中,通常需有某种壳体罩住以进行机械保护。
当管子、导管或容器不能开口或禁止开口,因而不能使用探头或热电偶套管时,可通过在外壁钳夹或固定一个表面温度传感器的方法进和测量。
温度传感器的选用
2、LM135/235/335温度传感器
▪ LM135/235/335系列是美国国家半导体公司(NS)生产 的一种高精度易校正的集成温度传感器,工作特性类似 于齐纳稳压管。该系列器件灵敏度为10mV/K,具有小于 1Ω的动态阻抗,工作电流范围从400μA到5mA,精度为 1℃,LM135的温度范围为-55℃~+150℃,LM235的温 度范围为-40℃~+125℃,LM335为-40℃~+100℃。封装 形式有TO-46、TO-92、SO-8。该系列器件广泛应用于 温度测量、温差测量以及温度补偿系统中。
件的滞后能否适应测温要求。 ➢ (5) 被测对象的环境条件对测温元件是否有损害。 ➢ (6) 价格如保,使用是否方便。
热敏电阻器
▪ 许多热敏电阻具有负温度系数(NTC),也就是说温度下 降时它的电阻值会升高。在所有被动式温度传感器中, 热敏电阻的灵敏度(即温度每变化一度时电阻的变化)最高, 但热敏电阻的电阻/温度曲线是非线性的。
▪ 温度传感器种类很多,通过正确地选择软件 和硬件,一定可以找到适合自己应用的传感 器。
利用单片机实现极简单的测温电路
▪ 单片机在电子产品中的应 用已经越来越广泛,在很 多的电子产品中也用到了 温度检测和温度控制,但 那些温度检测与控制电路 通常较复杂,成本也高, 本文提供了一种低成本的 利用单片机多余I/O口实 现的温度检测电路,该电 路非常简单,且易于实现, 并且适用于几乎所有类型 的单片机。其电路如右图 所示:
热电偶
▪ 热电偶由两种不同金属结合而成,它受热时会产 生微小的电压,电压大小取决于组成热电偶的两 种金属材料,铁-康铜(J型)、铜-康铜(T型)和铬铝(K型)热电偶是最常用的三种。
▪ 热电偶产生的电压很小,通常只有几毫伏。K型 热电偶温度每变化1℃时电压变化只有大约40μV, 因此测量系统要能测出4μV的电压变化测量精度 才可以达到0.1℃。
Jencons 产品型号及温度传感器数据表说明书
El mango está moldeado de manera permanente a la vaina de la sonda, incluye cable y conector miniatura* Especifique tipo de unión: E (expuesta), G (a tierra) o U (sin conexión a tierra). Nota: El recubrimiento PFA está disponible, con un mango no moldeado en su lugar. Haga el pedido del número de pieza estándar con el sufijo “-PFA”, con coste adicional. 200 °C máximo. ** Para una clasificación de temperatura y estabilidad más alta, cambie “SS” o “IN” por “XL ”, con coste adicional.Ejemplos de pedido: KHSS-IM30G-RSC-300, vaina de acero inoxidable 304, de tipo K, unión con conexión a tierra de 3,0 mm, de 300 mm de largo.Para longitudes adicionales, consulte al Departamento de Ventas. Para solicitar una vaina de acero inoxidable 310, 316 o 321, cambie “SS” en el número de modelo por “310SS, 316SS o 321SS”; sin coste adicional. KHXL-IM60G-RSC-300, Super OMEGACLAD TM , vaina de acero inoxidable 321, de tipo K, unión con conexión a tierra de 6 mm, de 300 mm de largo.El cable retráctil de 0,3 m se expande a 1,5 mSe muestra en un tamaño inferior al real.U M ango moldeado calificado a 220 °C U E l cable retráctil con memoria superior se expande a 1,5 m U M ini clavija de termopar para utilizar contermómetros manuales U L ongitudes estándar de 300, 450 y 600 mm; longitudes personalizadas disponibles U S onda RTD deacoplamiento, tipo PR-16 (véase la página 94)U V ainas de acero inoxidable304, 310, 316 y 321, Inconel Ny Super OMEGACLADTM XLPROBE TIPS CUTAWA Y ART PROBE TIPS CUTAWA Y ART Sondas de termopar de varilla con mangoDisponibilidad de sondas depunta especial económicas*Las calificaciones de temperatura dependen del tipo de termopar, el diámetro de la vaina y el entorno.Sonda de aireEl elemento expuesto permite el flujo de aire para una medición rápida. Calificada a 870 °C. Disponible con diámetro de 4,5 mm y unión expuesta solamente.Para hacer el pedido, añada el sufijo “-AP ” al número de modelo por un coste adicional.Ejemplo de pedido: KHSS-IM45-RSC-300-AP , sonda con mango de 300 mm de largo , tipo K, DE de 4,5 mm, vaina de acero inoxidable 304, unión expuesta, punta de sonda de aire.Nota: Disponibilidad de otros estilos, consulte Sonda de penetración (muy popular)Punta cónica, para inserción en materiales blandos y semicongelados. Calificada a 1.150 °C. Disponible con diámetro de 4,5 o 6 mm y unión con conexión a tierra solamente.Para hacer el pedido, añada el sufijo “-NP ” al número de modelo por un coste adicional.Ejemplo de pedido: KHSS-IM45-RSC-300-NP , sonda con mango de 300 mm de largo , tipo K, DE de 4,5 mm, vaina de acero inoxidable 304, unión con conexión a tierra, punta de sonda cónica.Nota: Disponibilidad de otros estilos, consulte Cable retráctilEl cable retráctil de 0,3 m se expande a 1,5 m, la clavija de termopar estándar se acopla a todos los termómetros manuales para una conexión práctica.U Large Backlit Display U Built-In IR Pyrometer Protegido por patentes estadounidenses e internacionales y solicitudes pendientes.PATENTADO¡S ond a s de t e r m o p a r c o nU S B i n c o r p or a d o ! C o n s u l t ee s .o m e g a .c o mVisite para obtener más información acerca del SUPERMETER TMMedidor manual recomendadoHHM290Sonda noincluida.。
柯尼斯伯格温度传感器选型指南说明书
Kongsberg Temperature SensorsMajor supplier for more than 40 years Kongsberg Maritime has been a major supplier of temperature sensors for more than 40 years. Most of our customers are in the maritime market and our sensors are mainly used for diesel engine and cargo/deck instrumentation. In addition we serve a base of reputed industrial clients with custom made sensor solutions.Kongsberg Maritime provides you with high performance sensors for applications including:§Marine and industrial engines §Exhaust gas §Cylinder liner§Cargo and deck applications on ships §Gears and gearboxes §Bearings§Lubrication systems §Pumps and purifiers §Compressors §BoilersWe can add to your success Building on our broad portfolio of solutions and experience, we can assist in giving your products an additional competitive edge. We do this by providing our experience in the selection of innovative technological solutions and mechanical designs that will meet your requirements. By providing quality at every level of the process ourcustomers acknowledge Kongsberg Maritime as a reliable and dependable long term partner.For all purposes1MN4000 Bearing sensorMB1100General purpose sensorMB158Exhaust gas sensorS E N S O R T Y P ES E N S O R S P E S I F I C A T I O NS E N S O R A P P L I C A T I O NBearing temperature §Our range of custom designed main bearing temperature sensors can be fitted into any type of 2- and 4-stroke diesel engines.§In addition we have a comprehensive range of spring loaded/flexible tube type of bearing sensors that are applicable for a high number ofapplications. These sensors can be used for measurement of bearing metal temperatures or the temperature of the oil flowing out of the bearings.Exhaust gas temperature §Our designs have proven with excellent performance towards violent vibrations and temperature peaks generated in the exhaust gas pipes of all types of large marine diesel engines.§All our exhaust gas temperature sensors are installed in engine builder approved protection wells. This ensures proper adaption to the measuring point providing accurate and fast measurements.§In addition Kongsberg Maritime offers an extensive range of signal amplifiers. These can be mounted directly on the engine or in cabinets.Our range of sensors have the following features: §Internal connection box or hardwire type of sensors §Easy exhangable by use of protection wells §Customer specific insertion and cable lenghts §All designs have marine classification approvals from all major societies General purpose temperature §For temperature measurement on diesel/gas engines and engine room instrumentation §Avaliable for low and high temperature applications §Reliable design and high quality sensors for long lifetime performance(1)(2)Reaction time in water. Detects 63.2% of a sudden changes in temperature.EEx ia. must be connected to a zener barrier like the Kongsberg DZ-110 to be used in explosive areas.Selection guide23Industry Marine approval Water and oilExhaust Vapour Air Bearing Cargo Surface Cylinder linerMB1100MB720GC100 MN3700MN1841MN3724MN4000MN4119MN4460MN3238MN1535MN2682MN2120MB864MB158MN3670MN524MN46XXMB286PT100PT1000Thermocouple Media temperature Protection well Reaction time 4 - 20 mA(2)(1)Solid competence reduces costWe have always recognised the importance of supporting our products and systems with professional training.A wide range of courses are therefore offered to ensure that you achieve the goal of full system utilisation with safe Upgrading that paysProduct and system upgrades can improve your vessel's operations and reduce your overall maintenance costs. We will ensure that existing products and systems can be extended or upgraded based on standard upgrade kits.Support 24Call +47 815 35 355E-mail:************************We make the sensor you needWe are dependableWe are innovativeWe are a customer oriented company, and our flexible production facilities are designed to provide quality custom projects. Our product experts andtechnological capabilities are utilised to develop sensor solutions with inherent high quality and long lifetime performance.We recognise the importance of good customerrelationships. To maintain them we keep local stocks to reduce delivery times, provide fast custom tailoring, aid problem solving and provide detailed installation guides. There is no substitute for quality, reliability or service.We are always incorporating the latest technologies, in order to increase value for our customers. We look beyond conventional approaches and established methods to find new reliable solutions. Ourcompetence is used to push back boundaries and to create new solutions.Installed onboard more than 15000 vesselsKongsberg Maritime has been in the marine sensor market for more than 40 years. Close relations with customers, tailor made products and world-wide service makes Kongsberg Maritime an attractive sensor and spare part supplier.During this extensive period of operation we have created a range of sensors and accessories that have been designed specifically for ship and offshore use. Our product range consists of more than 2000 different sensors and our equipment is installed onboard more than 15000 vessels.Sensor spare partsKongsberg Maritime has designed a new sensor spare part supply program. Through this initiative we offer our customers the following commitments and services:§ISO-9001 certified production §Engine manufacturer approved design §Class approval by all major classification societiesYour sensor supplier4SENTRY - Wireless Temperature Monitoring §The ultimate method for monitoring temperature; on crank- and crosshead bearings for both diesel and gas engines §Based on low energy radar technology §Requires no external power sourcesPlease see dedicated brochure for more information.K ONGSBERG SENTRY®Wireless Temperature MonitoringP-SSGT09/AE Layout: Jess ProfilDesign Basic design: Anisdahl, Sand & Partnere Photos:KongsbergPrinting: Skipnes AS©Kongsberg MaritimeE-mail:**********************T elephone: +47 32 28 50 00。
罗斯蒙特 DIN-Style 温度传感器和温度井(公制)产品数据手册说明书
Product Data Sheet00813-0200-2654, Rev MBJuly 2022 Rosemount™ DIN-Style Temperature Sensors and Thermowells (Metric)■RTDs (0065) and thermocouples (0185) available to meet any process requirement■DIN-style for easy installation and replacement■Integrated temperature assembly with Rosemount transmitters availableFeatures and benefitsOptimize plant efficiency and increase measurement reliability with industry-proven design and specifications ■Available in a wide variety of sensing technologies – RTD and thermocouples.■All sensor styles and lengths are available in 6 mm diameter.■State of the art manufacturing procedures provide robust element packaging and increasing reliability.■Industry-leading calibration capabilities allow for Callendar-Van Dusen values to give increased accuracy when paired withRosemount transmitters.■Optional Class A accuracy for critical temperature measurement points.Streamline operations and maintenance with sensor and thermowell design■DIN-style sensor uses connection heads that allow quick mounting and replacement while maintaining environmental integrity.■Terminal block, flying leads, and spring loaded threaded adapter styles offer remote or integral transmitter mountingconfiguration.ContentsFeatures and benefits........................................................................................................................................................................2Rosemount DIN-Style Sensor and Thermowell...................................................................................................................................4Rosemount Series 96 Barstock Thermowell.....................................................................................................................................23Sensor reference information..........................................................................................................................................................27Specifications..................................................................................................................................................................................31Product certifications......................................................................................................................................................................34Sensor-to-transmitter matching .....................................................................................................................................................43Accessories......................................................................................................................................................................................49Wake frequency calculation. (52)Sensor and Accessories (Metric)July 2022Explore the benefits of Complete Point Solutions ™ from Emerson■An “Assemble Sensor to Specific Transmitter” option enables Emerson to provide a complete point temperature solution,delivering an installation-ready transmitter and sensor assembly.■Emerson has a complete portfolio of single point and high density temperature measurement solutions, allowing you toeffectively measure and control your processes with the reliability you trust from Rosemount products.Experience global consistency and local support from numerous worldwide Rosemount Temperature manufacturing sites ■World-class manufacturing provides globally consistent products from every factory and the capacity to fulfill the needs of anyproject, large or small.■Experienced instrumentation consultants help select the right product for any temperature application and advise on bestinstallation practices.■An extensive global network of Emerson service and support personnel can be on-site when and where they are needed.Access information when you need it with asset tagsNewly shipped devices include a unique QR code asset tag that enables you to access serialized information directly from the device. With this capability, you can:■Access device drawings, diagrams, technical documentation, and troubleshooting information in your MyEmerson account ■Improve mean time to repair and maintain efficiency ■Ensure confidence that you have located the correct device■Eliminate the time-consuming process of locating and transcribing nameplates to view asset informationJuly 2022Sensor and Accessories (Metric)Rosemount DIN-Style Sensor and ThermowellOnline Product ConfiguratorMany products are configurable online using our Product Configurator. Select the Configure button or visit our website to start.With this tool's built-in logic and continuous validation, you can configure your products more quickly and accurately.Model codesModel codes contain the details related to each product. Exact model codes will vary; an example of a typical model code is shown in Figure 1.Figure 1: Model code example1.Required model components (choices available on most)2.Additional options (variety of features and functions that may be added to products)Specifications and optionsThe purchaser of the equipment must make the specification and selection of product materials, options, or components. For more information, see the Material selection section.Sensor and Accessories (Metric)July 2022July 2022Sensor and Accessories (Metric)Optimizing lead timeThe starred offerings (★) represent the most common options and should be selected for the fastest delivery times. The non-starred offerings are subject to additional delivery lead time.Series 65 Platinum RTD and 185 Thermocouple without thermowellRequired model componentsModelConnection head(1)To maintain IP rating, use a suitable cable gland on the conduit connection thread. All threads must be sealed with a suitable sealing tape.Sensor and Accessories (Metric)July 2022 Sensor lead wire terminationSensor typeExtensionExtension length (N) in millimetersJuly 2022Sensor and Accessories (Metric)Thermowell materialSensor length (L) in millimetersAdditional optionsSensor optionsAvailable with Series 65 Sensor only.Product certificationsRefer to Table 3 for limitation on options available with approvals.Sensor and Accessories (Metric)July 2022Ground screwCable glandsCover chain optionExtension ringJuly 2022Sensor and Accessories (Metric) TerminationAssemble-to optionIf ordering Assemble-to option XA with a transmitter, specify the same option on the transmitter model number.Sensor calibration with works certificateAvailable with Series 65 only.VS system calibrationAvailable with Series 65 Sensor only.GOST calibration certificateTemperature range optionSensor and Accessories (Metric)July 2022 Series 65 Platinum RTD and 185 Thermocouple with tubular thermowellRequired model componentsModelConnection head(1)To maintain IP rating, use a suitable cable gland on the conduit connection thread. All threads must be sealed with a suitable sealing tape.Sensor lead wire terminationSensor typeExtensionExtension length (N) in millimetersThermowell materialImmersion length (U)Thermowell mounting style(1)The NAMUR stepped profile is available in both thermowell material options, however to maintain NAMUR compliance material code Y isrequired. 115 mm is the minimum immersion length stepped thermowells are available and is the minimum requirement to maintain NAMUR compliance however for lengths shorter than 115 mm a straight thermowell with a 8 mm OD will be provided.(2)Not available with thermowell Material code D.Additional optionsSensor optionsAvailable with Series 65 Sensor only.Product certificationsRefer to Table 3 for limitation on options available with approvals.Ground screwCable glandsCover chain optionExtension ringMaterial certificationExternal pressure testDye testAssemble-to optionIf ordering Assemble-to option XA with a transmitter, specify the same option on the transmitter model number.Sensor calibration with works certificateAvailable with Series 65 only.Temperature range optionSeries 65 Platinum RTD and 185 Thermocouple with barstock thermowellRequired model componentsModelConnection head(1)To maintain IP rating, use a suitable cable gland on the conduit connection thread. All threads must be sealed with a suitable sealing tape. Sensor lead wire terminationSensor typeExtensionExtension length (N) in millimetersThermowell materialImmersion lengthThermowell mounting style(1)This mounting style is only available with the lagging length code T040.(2)Full penetration weld option R07 is required with this mounting style.(3)This mounting style has a minimum lagging length of 80 mm.(4)Only available with extension style T.(5)This mounting style is only available with the lagging length code T075.(6)This mounting style is only available with the lagging length code T135.Additional optionsSensor optionsAvailable with Series 65 Sensor only.Product certificationsRefer to Table 3 for limitation on options available with approvals.Ground screwCable glandsCover chain optionExtension ringTerminationMaterial certificationExternal pressure testInternal pressure testDye testNACE approvalOnly available with thermowell material codes D, J, and A.Assemble-to optionIf ordering Assemble-to option XA with a transmitter, specify the same option on the transmitter model number.Sensor calibration with works certificateAvailable with Series 65 only.VS system calibrationAvailable with Series 65 Sensor only.Temperature range optionRosemount Series 96 Barstock ThermowellOnline Product ConfiguratorMany products are configurable online using our Product Configurator. Select the Configure button or visit our website to start. With this tool's built-in logic and continuous validation, you can configure your products more quickly and accurately.Model codesModel codes contain the details related to each product. Exact model codes will vary; an example of a typical model code is shown in Figure 2.Figure 2: Model code example1.Required model components (choices available on most)2.Additional options (variety of features and functions that may be added to products)Specifications and optionsThe purchaser of the equipment must make the specification and selection of product materials, options, or components. For more information, see the Material selection section.Optimizing lead timeThe starred offerings (★) represent the most common options and should be selected for the fastest delivery times. The non-starred offerings are subject to additional delivery lead time.Required model components ModelThermowell materialAdditional materials are available upon request.Immersion length (L) in millimetersThermowell mounting style(1)This mounting style is only available with the lagging length code T040.(2)Full penetration weld option R07 is required with this mounting style.(3)This mounting style has a minimum lagging length of 80 mm.(4)This mounting style is only available with the lagging length code T075.(5)This mounting style is only available with the lagging length code T135. Lagging lengthInstrument connection thread typeAdditional optionsMaterial certificationExternal pressure testInternal pressure testDye testNACE approvalOnly available with thermowell material codes D, J, and A.Plug/chainWeld optionFlange typeWake frequency calculationSensor reference informationOverviewRosemount integral mount temperature sensors, accessory hardware, and assemblies constitute a complete line of industrial temperature-sensing instruments. A variety of RTD and thermocouple sensors are available alone, or as complete assemblies including connection heads, thermowells, and extension fittings. Emerson offers complete temperature measurement assemblies including Rosemount Smart and Programmable Temperature Transmitters. Ask your Emerson representative for details.Series 65 Platinum RTD Temperature Sensors are highly linear and have a stable resistance versus temperature relationship. These sensors are used primarily in industrial environments where high accuracy, durability, and long-term stability are required. Series 65 Sensors are designed to meet the most critical parameters of international standards: IEC 751:1983, Amendment 1:1986 and2:1995 and DIN EN 60751:1996. This standardization provides sensor interchangeability without the need for transmitter circuitry adjustment.Enhanced performance and optimal temperature measurement accuracy is available for Series 65 Sensors coupled with a range of Rosemount Temperature Transmitters through calibration schedules and Callendar-Van Dusen constants.Series 185 Thermocouple Temperature Sensors conform to IEC 584:1982, Amendment 1:1989 and are available in types J, K, and N. Series 185 Sensors are available single ungrounded, or dual ungrounded, isolated.All sensors are available in a variety of lengths(1) and ranges with flying lead, terminal block, or ½-in. NPT spring-loaded adapter lead wire terminations.In addition to complete assemblies, Emerson offers a selection of separate accessory hardware including connection heads and thermowells.Selecting an extension and thermowellAside from ambient temperature variations, heat from the process, in a direct mounting configuration, is transferred from the thermowell to the transmitter housing. If the expected process temperature is near or beyond the transmitter specification limits,consider the use of additional thermowell extension length, an extension nipple, or a remote mounting configuration to isolate the transmitter from these excessive temperatures. Figure 3 provides an example of the relationship between transmitter housing temperature rise and extension length. Use Figure 3 and the accompanying example as a guide for determining adequate thermowell extension length.Figure 3: Transmitter Housing Temperature Rise vs. Uninsulated Extension Length605040302010075100125150175200225H o u s i n g R i s e A b o v e A m b i e n t (°C )Uninsulated Extension “N” Length (mm)A B CA.815 °C process temperatureB.540 °C process temperatureC.250 °C process temperature ExampleThe rated ambient temperature specification for the transmitter is 85 °C. If the maximum ambient temperature is 40 °C and the temperature to be measured is 540 °C, the maximum allowable housing temperature rise is the rated temperature specification limit minus the existing ambient temperature (85 – 40 °F), or 45 °C.As shown in Figure 3, an “N” dimension of 90 mm will result in a housing temperature rise of 22 °C. An “N” dimension of 100 mm would therefore be the minimum recommended length, and would provide a safety factor of about 25 °C. A longer “N” dimension,such as 150 mm, would be desirable in order to reduce errors caused by transmitter temperature effect, although in that case the transmitter may require extra support.Integral mount sensors and assembliesSeries 65 RTD and Series 185 Thermocouple Temperature Sensors may be ordered as complete assemblies, which provide a complete, yet simple, means of specifying the proper industrial hardware for most temperature measurements. One assembly model number, derived from one ordering table, completely defines the type of sensing element, as well as the material, length,and style of extension fittings and thermowells.All sensor assemblies are sized and inspected by Emerson to ensure complete component compatibility and performance.(1)Sensors over one meter long will be supplied coiled unless otherwise requested.Mounting configurationsSeries 65 Platinum RTDs and Series 185 ThermocouplesYou may order the Series 65 RTDs and the Series 185 Thermocouples with flying leads, a terminal block, or a ½-in. NPT spring-loaded adapter.Ordered with flying leads, the sensors are designed to be used with a head mount temperature transmitter attached directly to the sensor. The flying lead configuration allows the removal of the sensor and transmitter as one assembly.The BUZH connection head allows terminal block style sensors and transmitters to be mounted together. The transmitters in these assemblies will be mounted in the cover of the BUZH connection head.The sensors with a ½-in. NPT spring-loaded adapter are used with directly mounted Rosemount 3144P Field Mount Temperature Transmitters or through the use of Rosemount connection heads. This assembly requires a terminal block to be mounted inside the head.Hazardous area approvals are available with all three types of sensors, but they are dependent on the configuration of the entire temperature measurement assembly (see Product certifications).Temperature considerationsAmbient temperature limits for the connection head are –40 °C to +85 °C. The LT option may be extended down to a range of –51°C to +85 °C.Ambient temperature range addresses the connection head only, and requires suitable cable glands and field wiring provisions to meet the temperature requirements below –40 °C.Figure 4: Series 65 RTD Lead Wire ConfigurationSeries 65 RTD terminal block termination code 2Dual element (1)Red Red Wht321Red Red Wht654123456(1)The color of the terminal posts in the terminal block may not match the color of the lead wires connected to the capsule.Figure 5: Series 185 Lead Wire ConfigurationSeries 185 RTD thermocouple terminal block Dual elementSpecificationsSeries 65 Platinum RTD100 Ω RTD at 0 °C, α = 0.00385 °C-1Temperature range-50 to 450 °C (-58 to 842 °F) or -196 to 300 °C (-321 to 572 °F) depending on typeSelf heating0.15 °C/mW when measured per method defined in IEC 751:1983, Amendments 1 and 2Thermal response timeNine seconds maximum required to reach 50 percent sensor response when tested in flowing water according to IEC 751:1983, Amendments 1 and 2Immersion error60 mm minimum usable depth of immersion when tested according to IEC 751:1983, Amendments 1 and 2Insulation resistance1,000 MΩ minimum insulation resistance when measured at 500 Vdc and at room temperatureSheath material316 SST sensor tip (hot end) with 321SST mineral insulated cable constructionLead wirePTFE insulated, silver-coated, 0.21mm2 (24 AWG) stranded copper wire. See Figure 4 for wire configuration.Identification dataThe model and serial numbers are marked on each sensor.Ingress protection (IP) ratingsThe Rosemount connection head is rated to IP66/IP68 and NEMA® 4X. The BUZ and BUZH connection heads are rated to IP65. To maintain IP rating at installation, one of the following options must be used with the connection head:■Extension and/or adapter and barstock thermowell■Tubular thermowell■Sensor and sealing screw (extension option “V”)■General purpose adapterVibration limitsFor sensor types option code “1”, “2”, and “5”, the vibration resistance is ±0.02 percent (0.05 °C) maximum ice-point resistance shift after 3 g vibration between 10 and 500 Hz for 150 hours according to IEC 751:1983, Amendments 1 and 2.For sensor types option code “3”, “4”, and “6” the vibration resistance is 0.1 °C maximum ice-point resistance shift after 1 g vibration between 10 and 500 Hz for 150 hours according to IEC 60751:2008, Amendments 1 and 2.For sensor types option code “7”, “9”, and “0”, the vibration resistance is ±0.02 percent (0.05 °C) maximum ice-point resistance shift after 10 g vibration between 10 and 500 Hz for 150 hours according to IEC 751:1983, Amendments 1 and 2.Table 1: Series 65 InterchangeabilitySeries 185 ThermocoupleConstructionA thermocouple consists of a junction between two dissimilar metals that produces a change in thermoelectric emf in relationship to a change in temperature. Rosemount Series 185 Thermocouple sensors are manufactured from selected materials to meet IEC 584 Tolerance Class 1. The junction of these wires is welded to form a pure joint, maintaining the integrity of the circuit and ensuring the highest accuracy. Ungrounded junctions are protected from the environment by the sensor sheath. The ungrounded and isolated junctions provide electrical isolation from the sensor sheath.Sheath materialRosemount thermocouples are made of a mineral insulated cable design with a variety of sheath materials available to suit both the temperature and the environment. For temperatures up to 800 °C in air, 1.4541 (321 SST) is standard. For temperatures from 800 to 1100 °C in air, 2.4816 (Alloy 600) is standard. For temperatures above 1100 °C, precious metal or ceramic protective sheaths are available upon request. For strongly oxidising or reducing atmospheres, consult your local Emerson representative.Lead wiresPTFE insulated, 0.52 mm2 (20 AWG) stranded thermocouple wire. Color coded per IEC 584. See Figure 5 for wire configuration. Identification dataThe model and serial numbers are marked on each sensor.Insulation resistance1,000 MΩ minimum insulation resistance when measured at 500 Vdc and at room temperature.Ingress protection (IP) ratingsThe Rosemount connection head is rated to IP66/IP68 and NEMA 4X. The BUZ and BUZH connection heads are rated to IP65. To maintain IP rating at installation, one of the following options must be used with the connection head:■Extension and/or adapter and barstock thermowell■Tubular thermowell■Sensor and sealing screw (Extension option “V”)■General purpose adapterTable 2: Characteristics of Series 185 ThermocouplesMaterial selectionEmerson provides a variety of Rosemount product with various product options and configurations including materials of construction that can be expected to perform well in a wide range of applications. The product information presented is intended as a guide for the purchaser to make an appropriate selection for the application. It is the purchaser’s sole responsibility to make a careful analysis of all process parameters (such as all chemical components, temperature, pressure, flow rate, abrasives, contaminants, etc.), when specifying product, materials, options and components for the particular application. Emerson is not in a position to evaluate or guarantee the compatibility of the process fluid or other process parameters with the product, options, configuration or materials of construction selected.Functional specificationsPowerOvervoltage category IEnvironmentalPollution degree 4Product certificationsRev 1.36European Directive informationA copy of the EU Declaration of Conformity can be found at the end of the Quick Start Guide. The most recent revision of the EU Declaration of Conformity can be found at /Rosemount.Ordinary Location CertificationAs standard, the transmitter has been examined and tested to determine that the design meets the basic electrical, mechanical, and fire protection requirements by a nationally recognized test laboratory (NRTL) as accredited by the Federal Occupational Safety and Health Administration (OSHA).North AmericaThe US National Electrical Code® (NEC) and the Canadian Electrical Code (CEC) permit the use of Division marked equipment in Zones and Zone marked equipment in Divisions. The markings must be suitable for the area classification, gas, and temperature class. This information is clearly defined in the respective codes.Hazardous locations certificationsUSAE5 USA Explosionproof (XP) and Dust-Ignitionproof (DIP)Certificate70044744Standards FM 3600:2011, FM 3615:2006, UL 50E:2007, UL 61010-1:2010, ANSI/ISA 60529:2004Markings XP CL I, DIV 1, GP B, C, D; DIP CL II, DIV 1, GP E, F, G; CL III; T6 (-50 °C ≤ T a ≤ +80 °C), T5 (-50 °C ≤ T a ≤ +95 °C); Seal not required; installed per Rosemount drawing 00214-1030; Type 4X† and IP 66/67; V max 35VDC, 750mW max CanadaE6 Canada Explosionproof (XP) and Dust-Ignitionproof (DIP)Certificate70044744Standards CAN/CSA C22.2 No. 0:2010, CAN/CSA No. 25-1966 (R2000), CAN/CSA C22.2 No. 30-M1986 (R2012), CAN/CSA C22.2 No. 94-M1991 (R2011), CAN/CSA C22.2 No. 61010-1:2012Markings XP CL I, DIV 1, GP B, C, D; DIP CL II, DIV 1, GP E, F, G; CL III; T6 (-50 °C ≤ T a ≤ +80 °C), T5 (-50 °C ≤ T a ≤ +95 °C); Seal not required; installed per Rosemount drawing 00214-1030; Type 4X(2) and IP 66/67; Vmax 35VDC, 750mWmax(2)Spring loaded indicator has reduced ingress and dust ratings. Spring loaded sensors must be installed in a thermowell to maintain dust and ingress ratings.EuropeE1 ATEX FlameproofCertificate DEKRA 19ATEX0076XStandards EN IEC 60079-0: 2018, EN 60079-1: 2014Markingsa ≤ +80 °C)Special Conditions for Safe Use (X):1.Flameproof joints are not intended for repair.2.Non-Standard Paint options may cause risk from electrostatic discharge. Avoid installations that cause electrostatic build-upon painted surfaces, and only clean the painted surfaces with a damp cloth. If paint is ordered through a special option code, contact the manufacturer for more information.3.When provided on their own, the adapter style sensors must be assembled to a suitable Ex db enclosure with a free internalvolume no greater than 550 cm3.4.Guard DIN sensors against impacts greater than 4 Joules.(1)Minimum process temperature and minimum ambient temperature is limited to -50 °C for models with enclosure designation “7”, “8”, “9”, “K”,“R” or “W”.I1 ATEX Intrinsic SafetyCertificate Baseefa16ATEX0101XStandards EN 60079-0:2012+A11:2013, EN 60079-11:2012MarkingsSpecial Condition for Safe Use (X):The equipment must be installed in an enclosure which affords it a degree of ingress protection of at least IP20.N1 ATEX Type nCertificate BAS00ATEX3145Standards EN 60079-0:2012+A11:2013, EN 60079-15:2010Markingsa ≤ + 70 °C)ND ATEX DustATEX Certificate DEKRA 19ATEX0076XStandards EN IEC 60079-0:2018, EN 60079-31:2014Markingsa ≤ + 80 °C);Special Conditions for Safe Use (X):1.Non-Standard Paint options may cause risk from electrostatic discharge. Avoid installations that cause electrostatic build-upon painted surfaces, and only clean the painted surfaces with a damp cloth. If paint is ordered through a special option code, contact the manufacturer for more information.2.When provided on their own, the adapter style sensors must be assembled to a suitable Ex tb enclosure with a free internalvolume no greater than 550 cm3.3.The spring loaded adapter style sensors and DIN style sensors must be installed in a thermowell to maintain Ex tbprotection.(1)Minimum process temperature and minimum ambient temperature is limited to -50 °C for models with enclosure designation “7”, “8”,“9”, “K”, “R” or “W”.InternationalE7 IECEx FlameproofCertificate IECEx DEK 19.0041XStandards IEC 60079-0: 2017, IEC 60079-1: 2014Markings Ex db IIC T6...T1 Gb, (–60 °C ≤ T a ≤ + 80 °C)Special Conditions for Safe Use (X):1.Flameproof joints are not intended for repair.2.Non-Standard Paint options may cause risk from electrostatic discharge. Avoid installations that cause electrostatic build-upon painted surfaces, and only clean the painted surfaces with a damp cloth. If paint is ordered through a special option code, contact the manufacturer for more information.3.When provided on their own, the adapter style sensors must be assembled to a suitable Ex db enclosure with a free internalvolume no greater than 550 cm3.4.Guard DIN sensors against impacts greater than 4 Joules.。
各种负温度系数_NTC_热敏电阻-温度传感器技术参数详解与选型
PT Series -- Power Type NTC Thermistor
TS 系列——NTC 溫度感測器
TS Series -- NTC Temperature Sensor
OT 系列——辦公自動化 NTC 熱敏電阻/溫度感測器
OT Series -- OA (Office Automation) NTC Thermistor & Temperature Sensor
7. 集成电路/模块: DT系列——高精度芯片NTC热敏电阻
目錄
Contents
AT 系列——非絕緣引線型 NTC 熱敏電阻
AT Series – Non-insulated Lead Type NTC Thermistor
LT 系列——非絕緣引線(微小型)NTC 熱敏電阻
LT Series -- Non-insulated Lead (Small Type) NTC Thermistor
VT 系列——汽車溫度感測器用熱敏電阻
VT Series -- NTC Thermistor for Vehicle Temperature Sensor & Thermo Switch Making
VTS 系列——交通工具溫度感測器/溫度開關
VTS Series -- Vehicle Temperature Sensor & Thermo Switch
DTV 系列——汽車溫度感測器用 NTC 熱敏晶片
DTV Series -- Die (Bare Chip) NTC Thermistor for Vehicle Temperature Sensor & Thermo Switch Making
如何选择合适的温度传感器使用
浅论温度传感器的选用上海自动化仪表股份有限公司吴顺林测温控制仪表系统中的温度传感器在各类需要温控介质的测温过程中起着非常重要的角色和作用。
它已广泛的被应用于工业生产中的各个领域,如火电厂、核电厂、冶金、石油、化工、轨道交通、造纸、塑料制品、食品加工、科研领域等,尤其是在火电厂、核电厂、线缆行业的挤塑、挤橡、等相关设备的加热系统中是不可缺少的重要部件之一。
在电厂的发电过程中、在产品的生产或试验过程中,温控仪表系统对设备加热系统的温度控制,对工艺参数的正确执行,保证发电设备的正常高效运转、保证产品的高效高质量的生产,以及保证试验结果的准确性,都具有非常重要的作用。
涉及到温度传感器的选型是否正确合理,将直接对被测介质温度的准确性、测量介质温度所达到精度的长期稳定性、使用过程中的安全可靠性、被测介质温度变化的反应灵敏度、使用寿命、安装、温度传感器使用方便与否、以及温度传感器的性价比等都有着重要的影响作用,本文就被测介质温度的工况条件如何选用温度传感器作一浅论。
在现有的测温控制仪表系统中的温度传感器最常用的是热电偶、热电阻。
因热电偶、热电阻结构简单,往往被误认为:“热电偶两根线,热电阻一根丝,只要接上就完事”,其实并非如此。
热电偶、热电阻的结构虽然简单,但在选型和使用中仍然会出现许多问题,例如:发电厂的主蒸汽管道上高温高压测温热电偶如选用不当,将会造成测温不准确,影响发电效率;在温度传感器的保护套管上选用不当,甚至会引起较大的安全事故。
或者在选型时,若对被测介质的物理、化学特性、工况条件不了解或掌握情况不多,就无法正确选型。
如在渗碳等还原性的介质气氛中,如果不注意保护,热电偶偶丝也会因化学变化而电势变异导致超差,使得热电偶的测温精度不准确。
为了正确选型温度传感器,所以我们应考虑以下几个方面的问题。
一.温度传感器的基本结构及其作用温度传感器主要有三个部件:感温元件部件、保护套管部件和接线盒部件。
感温元件部份是测量温度的关键性部件,其测温精度、测温范围、稳定性、热响应时间等是重要的几个参数指标,是在选型中主要考虑的问题。
MAX6675的温度传感器报告
MAX6675的温度传感器报告实验项目:热电偶温度传感器的设计实验地点:信息学院传感器实验室专业班级:电科1401班学号:全文结束》》001864 学生姓名:李康泽全文结束》》年12月26日太原理工大学课程设计任务书学生姓名专业班级课程名称传感器原理及应用课程设计设计名称设计周数1、5周设计任务主要设计参数设计内容设计要求主要参考资料学生提交归档文件注:1、课程设计完成后,学生提交的归档文件应按照:封面说明书—温度,对周边环境会产生重要影响、和人们的衣食住行、农业生产等方面密不可分。
温度的测量在工业、农业生产中必不可少,在工业生产中甚至需要时刻观察温度的变化。
所以通过对温度的测量和测温设备的研究具有非比寻常的意义。
在社会生产力的不断提高下,对温度测量系统收集的温度数据方法要求越来越高,已经渗透到社会方方面面。
温度的测量主要应用于工业、农业这两大领域。
在这两大领域中,无论是机械的正常运转还是农作物的蓬勃生长,都离不开温度的测量。
在工业生产中,由于生产环境的限制,员工不可长时间停留观察设备运行正常或因为其他原因不能在现场。
这是找到最佳的方式收集数据的迫切需要,将数据发送到一个比较好操作的控制室,便于工作人员对数据的分析与处理;在农业生产上,对温室大棚的温度监测,以前都是选择分区取样的人工处理方式,工作辛苦,精确度不高。
而且在实际操作中,因为大棚的诸多环境限制因素,例如占地面积广、测量点分散而且数目多,所以这种测量方式已经被淘汰。
当前的科技水平下,为了取得更大的效益促使我们必须找到一种精确、简便易行的温度采集测量方法。
在科学技术的不断发展下,现代社会对各种参数:准确度和精密度的要求有一个几何增长。
在以此基础上,如何快速、准确获取这些参数需要依靠现代信息的发展水平。
传感器技术、通信技术、计算机结构技术并称当代三大信息采集技术,而这之中传感器技术遥遥领先其他两种技术,特别是传感器技术中对于温度的测量。
所以研究温度的收集方式和设备这一课题是相关领域国内外研究者的重要课题之一。
温度传感器选择
一、温度传感器选择由于采用NTC热敏电阻与温度的关系是非线性的,用电桥实现温度升高引起的电阻变化对应于电压变化,因此输出的结果测试精度较低,并且不能达到我们对温度控制的要求。
温度传感器AD590是一种电压输入、电流输出型集成温度传感器,测温范围为-55℃~150℃,精度高,非线性误差仅为±0.3℃,调节系数为1微安每K,输出电流I=(273+T)微安。
温度传感器LM1335,V0=10毫伏每摄氏度,具有很高的工作精度与线性工作范围。
器件输出电压与温度成线性关系,调节系数为10毫伏每摄氏度,因而优越之处在于无需外部校准微调,可以供±1\4℃常用室温精度。
二、转换电路将采集到的电信号转换为0~5V之间,使之可以直接加到ADC0809端口。
三、采样值量化算法:比例系数KT=0.0278V|℃=27.8MV0摄氏度时,电压为0+55*0.0278=1.529V,每个数字量对应电压值19.53MV,用KS表示得到数字量与温度的关系。
KT|KS=1.426数字量每摄氏度0摄氏度对用AD输出量D0=55*1.426=78.43≈79=01001111B四、ADC0809五、基本功能是用三个按键来控制风速、类型以及停止这三个状态的变换。
当风速键按下时实现风速强、中、弱三种状态依次循环切换,并用三个LED 指示灯来显示;当类型键按下时实现类型正常、睡眠、自然三种状态的依次循环切换,并用三个LED 指示灯来显示。
题目中类型键要求自然状态转2 秒,停4 秒;睡眠状态转2 秒,停转6 秒,这个涉及到时间问题,可以通过硬件或者软件来实现,选择通过软件来实现。
控制系统分四个功能模块,主要包含风速设置、类型设置、默认状态显示和退出系统。
1、风速设置这个模块中风速的三个状态强、中、弱之间的循环切换是通过将端口A的键值逐次加1(初始值为0, 每按下一次风速键寄存器值加1),然后对3求余,取其余数分别代表这三个状态来实现的。
常用温度传感器的对比分析及选择
常用温度传感器的对比分析及选择大致的要点:1.温度传感器概述:应用领域,重要性;2.四种主要的温度传感器类型的横向比较3.热电偶传感器4.热电阻传感器5.热敏电阻传感器6.集成电路温度传感器以及典型产品举例7.温度传感器的正确选择及应用在各种各样的测量技术中,温度的测量可能是最为常见的一种,因为任何的应用领域,掌握温度的确切数值,了解温度与实际状态之间的差异等,都具有极为重要的意义。
就以测量为例,在力的测量,压力,流量,位置及电平高低等测量的过程中,为了提高测量精度,通常都会要求对温度进行监视,如压力或力的测量,往往是使用惠斯登电阻电桥,但组成电桥的电阻随温度变化引起的误差,往往会大大超过待测力引起的电阻值变化,如不对温度进行监控并据此校正测量结果,则测量完全不可能进行或者毫无效果。
其他参数测量也有类似问题,可以说,各种的物理量都是温度的函数,要得到精确的测定结果,必须针对温度的变化,作出精确的校正。
本文就是帮助读者针对特定的用途,选择最为合适的温度传感器,并进行精确的温度测量。
工业上常用的温度传感器有四类:即热电偶、热电阻RTD、热敏电阻及集成电路温度传感器;每一类温度传感器有自己独特的温度测量范围,有自己适用的温度环境;没有一种温度传感器可以通用于所有的用途:热电偶的可测温度范围最宽,而热电阻的测量线性度最优,热敏电阻的测量精度最高。
表1是四类传感器的各自独特的性能特性及相互比较。
表2是四类传感器的典型应用领域。
热电偶--通用而经济热电偶由二根不同的金属线材,将它们一端焊接在一起构成,如图1所示;参考端温度(也称冷补偿端)用来消除铁-铜相联及康铜-铜联接端所贡献的误差;而两种不同金属的焊接端放置于需要测量温度的目标上。
两种材料这样联接后会在未焊接的一端产生一个电压,电压数值是所有联接端温度的函数,热电偶无需电压或电流激励。
实际应用时,如果试图提供电压或电流激励反而会将误差引进系统。
鉴于热电偶的电压产生于两种不同线材的开路端,其与外界的接口似乎可通过直接测量两导线之间的电压实现;如果热电偶的的两端头不是联接至另外金属,通常是铜,那末事情真会简单至此。
红外温度传感器选型表
红外温度传感器选型表CS 系列CS系列校核工具可以提供黑体源来校核红外温度传感器,同时也可以校核接触式的传感器。
型号描述CS171温度范围:+30.0到+200.0度;分辨率0.1度;精度(和精确温度计相比)±0.1度;发射率:>0.95;工作电压:220V AC19297CS172温度范围:低于环境温度40度到+75度;分辨率0.1度;精度(和精确温度计相比)±0.1度;发射率:>0.95;工作电压:221V AC26657RT 系列RT161是精确的参考温度计,探头和携带盒一并提供。
型号描述RT161温度范围:-35.00到+199.99度;分辨率0.01度;精度(和精确温度计相比)±0.02度±0.01%;探头:±0.03度±0.07%;9VDC供电11736EL系列型号描述EL21A 温度范围:0到+250度;光学镜头:2:1;发射率:0.95;输出:4-20mA2725EL21AWJ 温度范围:0到+250度;光学镜头:2:1;发射率:0.95;输出:4-20mA;水冷套和空气吹净管5725EL101A 温度范围:0到+250度;光学镜头:10:1;发射率:0.95;输出:4-20mA3225EL101AHT 温度范围:0到500度;光学镜头:10:1;发射率:0.95;输出:4-20mA3225EL101AWJ 温度范围:0到+250度;光学镜头:10:1;发射率:0.95;输出:4-20mA;水冷套和空气吹净管6225EL101AHTWJ 温度范围:0到500度;光学镜头:10:1;发射率:0.95;输出:4-20mA;水冷套和空气吹净管6225EL301A 温度范围:0到+250度;光学镜头:30:1;发射率:0.95;输出:4-20mA4475EL301AHT 温度范围:0到500度;光学镜头:30:1;发射率:0.95;输出:4-20mA4475EL301AWJ 温度范围:0到+250度;光学镜头:30:1;发射率:0.95;输出:4-20mA;水冷套和空气吹净管7475EL301AHTWJ 温度范围:0到500度;光学镜头:30:1;发射率:0.95;输出:4-20mA;水冷套和空气吹净管7475附件EL/MLEFB EL和MLE系列配套的固定支架225 EL/MLEAB EL和MLE系列配套的可调支架525EL/MLE21AAP为EL21A和MLE21A配套的空气吹净管850EL/MLE101AAP为EL101A和MLE101A配套的空气吹净管850EL/MLE301AAP为EL301A和MLE301A配套的空气吹净管850EL/MLE/ILLST为EL,MLE,和IL系列配套的激光瞄准工具3975 ELCE为没有水冷套的EL系列配套的延长线(最长5米)/米62.5ELCEHT为没有水冷套的EL系列配套的高温延长线(最长5米)/米187.5MLE系列MLE21A是一个2:1光学镜头的微型红外温度传感器,在0-250度的范围内,单独的电路板可以提供4-20mA的输出。
SensorsMetric_PDS_RevHA(0065H21D0080N0365/495A1E1X8)P8~10页
FIGURE 1. Transmitter Housing Temperature Rise vs. Uninsulated Exsing Rise Above Ambient (°C)
50
40
815 °C 540
30 20 10
0
250
°C
ProcePsrsoTceesmspTeermatpuererature °C Process Temperature
Sensors and Accessories (Metric)
Product Data Sheet
00813-0200-2654, Rev HA Catalog 2008 - 2009
Introduction
Overview
Rosemount integral mount temperature sensors, accessory hardware, and assemblies constitute a complete line of industrial temperature-sensing instruments. A variety of RTD and thermocouple sensors are available alone, or as complete assemblies including connection heads, thermowells, and extension fittings. Emerson Process Management (“Emerson”) offers s complete temperature measurement assemblies including Rosemount Smart and Programmable Temperature Transmitters. Please ask your Emerson representative for details.
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传感器和附件(公制)
2
概述
产品数据表
00813-0200-2654,版本 FB 2003 年 10 月
导言
选择延伸件和热电偶套管
罗斯蒙特集成化安装温度传感器,附件硬件及装 配件组成了一整套的工业温度传感仪表。多种电 阻式温度检测器和热电偶传感器可单独使用或作 为完整装配件使用,完整装配件包括接线盒、热 电偶套管和延伸附件。这里所提供的产品是为完 整装配件的应用而设计的,包括罗斯蒙特智能和 可编程温度变送器。请向当地罗斯蒙特代表索取 详细资料。
铠装材料 罗斯蒙特热电偶由矿物绝缘电缆组成,设计采用多种铠装材 料用以适应温度及环境。对于空气中温度达到 800 °C 的情 况,采用 AISI 321标准。对于空气中温度达到 800 至 1100 °C的情况,采用 英科耐尔 600 标准。对于空气中温度高于 1100 °C 的情况,根据要求,可采用贵金属或陶瓷铠装。对 于强氧化或还原的环境,请向当地罗斯蒙特代表咨询。
表 1 185 系列热电偶特征
类型 J K N
合金(导线颜色) Fe(+黑),CuNi(-白) NiCr(+绿),NiAl(-白) NiCrSi(+红),NiSi(-白)
铠装材料 1.4541(AISI 321) 英科耐尔 600
Nicrobell B
温度范围(°C) - 40 至 375,375 至 750 - 40 至 375,375 至 1000 - 40 至 375,375 至 1000
如图 1 所示,90 mm 的“N”尺寸将导致外壳 温度升高 22 °C。因此,100 mm“N”尺寸为 最小推荐长度并将提供大约 25 °C 的安全系数。 将需要一个更长的“N”尺寸(如 150 mm), 以降低由变送器温度影响引起的误差,尽管在这 种情况下,变送器可能需要额外支架。
(1) 100Ω , 0 °C 时,α= 0.00385Ωx °C/Ω
绝缘电阻 在室温下,在 500 Vdc 测试时,最小绝缘电阻为 1000 兆 欧(MΩ) 入口防护(IP)等级 罗斯蒙特 65 系列传感器装配件符合 IP65 / IP68 和 NEMA 4X 要求。该等级仅适用于包括下列任一项的完整装 配件:
● 接线盒、延伸件和 Barstock 热电偶套管 ● 接线盒和管状热电偶套管 ● 接线盒、延伸件和传感器
传感器和附件(公制)
图 2 65 系列 电阻式温度检测器和 185 系列热电偶
引线组态
65 系列电阻式温度检测器悬空引线和压簧式
接头—终端代码仅为 0 或 3
单元件
双元件
所有传感器装配件由罗斯蒙特测量分部按规定 尺寸制作并检查,以确保部件的完全兼容和性 能。
安装组态
65 系列铂电阻式温度检测器和 185 系列热 电偶
除环境温度变化外,在直接安装组态中,来自过 程的热量自热电偶套管传导至变送器外壳。如果 预计过程温度接近或超出变送器技术规格极限要 求,应考虑附加热电偶套管延伸长度、采用延伸 接头或远程安装组态,从而将变送器与过量温度 隔离。图 1 给出了一个变送器外壳温度升高与延 伸长度的关系的实例。采用图 1 和随附的实例作 为指南,可以确定热电偶套管的足够延伸长度。
图 1 变送器外壳温度升高与用于测试安装的非 隔热延伸长度的关系
提高的性能和最佳测试测量精度使 65 系列传 感器通过标定时间表和 Callendar van Dusen 常数,并可与一系列智能温度变送器耦合。
185 系列热电偶温度传感器符合 IEC 584 并可 采用 J 型、K 型和 N 型。185 系列传感器可以 是单元件无接地、双元件无接地或绝缘型。
产品数据表
00813-0200-2654,版本 FB 2003 年 10 月
温度传感器和附件
(公制版本)
传感器和附件(公制)
目录
“导言” . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .第 2 页 “一体化安装传感器和附件” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .第 3 页 “安装组态”. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .第 3 页 “技术规格”. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .第 4 页 “危险场所认证”. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 第 5 页 “传感器与变送器匹配”. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .第 6 页 “标定”.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .第 7 页 “订购表” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .第 9 页
引线
绝缘电阻
热电偶,内部 —18 SWG(16 AWG) 实心线(最大),19
在室温下,在 500 Vdc 测试时,最小绝缘电阻为 1000 MΩ。 SWG(18 AWG)实心线(最小)。外部延伸引线,J 型和 K
铠装材料 321 SST,带矿物绝缘电缆构件
型—0.8 mm 最小绞股线、PTFE 绝缘。颜色代码依据 IEC 584。有关引线组态,参阅图 2。
65 系列铂电阻式温度检测器温度传感器呈现出 电阻与温度存在非常高的线性和稳定关系。这些 传感器主要用于要求高精度、耐久性和长期稳定 性的工业环境。65 系列传感器的设计符合下列 国际标准中大部分关键参数:DIN EN 60751 合 并修订 1 和 2,DIN 43760 和 BS 1904。(1) 这 种标准化使传感器具有可互换性而无需调整变送 器电路。
65 系列电阻式温度检测器端子箱终端代码
单元件
双元件
您可订购配有悬空引线、端子块或 1/2” ANPT 压簧式接头的 65 系列电阻式温度检测器和 185 系列热电偶。
与悬空引线一起订购时,传感器要进行专门的 设计,并与接线盒安装的温度变送器配套使用, 变送器直接附加在传感器上。 悬空引线组态使 传感器和变送器作为一个装配件拆除极为简 便。
185 系列热电偶
构件 热电偶由两种不同金属之间的接点构成,该接点产生的热电 电动势变化与温度变化有关。罗斯蒙特 185 系列热电偶传感 器由精选材料制成,符合 IEC 584 1 级容差。导线的接点采 用焊接,以形成纯连接、保持电路完整性并确保达到最高精 度。无接地接点由传感器铠装保护免受环境影响。无接地和 绝缘接点与传感器铠装实现电气绝缘。
“65 系列和185 系列不带热电偶套管”.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .第 9 页 “65 系列和185 系列带管状热电偶套管”.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 第 11 页 “65 系列和185 系列带 Barstock 热电偶套管”.. . . . . . . . . . . . . . . . . . . . . . . . . . . 第 14 页 “96 系列 Barstock热电偶套管”. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 第 19 页 “附件”.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .第 16 页 “热电偶套管长度计算” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 第 20 页
引线 PTFE 绝缘、涂银铜线。有关引线组态,参阅图 2。
标识数据 每个传感器上都标有型号和序列号。
标识数据 每个传感器上都标有型号和序列号。
入口防护(IP)等级 罗斯蒙特 65 系列传感器装配件符合 IP65 / IP68 和 NEMA 4X 要求。该等级仅适用于包括下列任一项的完整装 配件:
● 接线盒、延伸件和 Barstock 热电偶套管 ● 接线盒和管状热电偶套管 ● 接线盒、延伸件和传感器