The connection method of temperature transmitter1

Temperature transmitter, it is a kind of converting temperature variables can transmit the standardization of output signal of the temperature instrument, it is mainly used for industrial process measurement and control of the temperature parameters. In use, according to different standards, the connection mode of temperature transmitter is different. And today we want to say is temperature transmitter according to the classification of the power supply connection mode

temperature transmitter according to the power supply connection mode can be divided into two wire system and four wire system.

transmitter has electric unit combination instrument series and miniaturization modular, multi-functional intelligent. The former were without sensor, after two kind of transmitter can easily with the thermocouple or heat resistance transmitter with a sensor.

with sensor transmitter usually consists of two parts: sensor and signal converters. The sensor is mainly the thermocouple or heat resistance; Signal converter mainly consists of measurement unit, signal processing and conversion unit ( Due to industrial heat resistance and thermocouple indexing table is standardized, so signal converter as a separate product is called the transmitter) And some transmitter increases the display unit, some also have the function of field bus.

if the transmitter consists of two sensors used to measure the temperature difference, the output signal with a given continuous function relationship between temperature difference. So called temperature transmitter.

transmitter output signal with a given continuous function relation between temperature ( Usually in the form of linear function) , the early production of the transmitter of the output signal and the temperature sensor resistance ( Or voltage value) A linear function relationship between.

the output signal of standardization is ma to 0 v to 10 v and 4 ~ 20 ma ( Or 0 v to 5 v) The dc signal. Do not rule out other standardized output signal with special provisions.

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key words: thermal resistance, thermocouple, thermal resistance, platinum resistance, PT100, PT1000, pressure sensor and digital temperature sensor