STT700

The core principle of a temperature transmitter is to convert the non-electrical quantity sensed by the temperature sensor (Temperature ) converted to a standard electrical signal 。Connect thermocouple (TC) or RTD (RTD) and other sensors, For thermocouple signals: Performs cold junction compensation (Corrects the effect of cold junction temperature changes ), amplifies the weak thermoelectric voltage, and perform linearization (Because thermoelectric voltage and temperature are nonlinear ) 。For RTD signals: Usually powered by a constant current source, converting its resistance change into a voltage change, Also performs linearization (Because resistance - temperature relationship is nonlinear ) 。The circuit also filters the signal to suppress interference 。The conditioned voltage signal is fed into the voltage /Current conversion circuit (V/I Converter ), accurately converted to industrial standard 4-20mA DC current signal (or other standard signals ) 。The current signal is linearly proportional to the measured temperature range, Strong interference immunity, Suitable for long-distance transmission to the control system 。

as Smart Line® Series Product 的成员, Smart Line® STT700 High performance temperature transmitter, High accuracy and stability over wide temperatures 。Smart Line® 可以轻松Meets 严苛的Temperature measurement Requirements, STT700是一款单/双Input Temperature transmitter, 可以supports 毫伏, 热电偶和RTD Sensor Input 。它可以提供HART或DE Protocol Output 。For oil and natural gas, petrochemical, Chemical industry, Thermocouples for power and other plants, RTD Signal conversion for other temperature sensors, And transmit to plant monitoring system 。