Integrated temperature transmitter

Explosion-proof thermocouple (resistance) with temperature transmitter, usually used in conjunction with display instruments, recording instruments, electronic computers, etc., output 4~20mA, and directly measure liquid and steam in the range of -200℃-1300℃ in various production processes and gaseous medium and solid surface temperature.

Features:

O two-wire output 4-20mA. Strong anti-interference ability;

O Save the cost of compensation wire and installation of temperature transmitter;

O Large measuring range;

O Automatic compensation of cold junction temperature, nonlinear correction circuit.

working principle:

The flameproof thermocouple uses the gap flameproof principle. When an explosion occurs in the cavity, it can be extinguished and cooled through the gap of the joint surface, so that the temperature of the flame after the explosion cannot be transmitted outside the cavity, so as to measure the temperature. The thermoelectromotive force (resistance value) produced by the thermocouple (resistance) passes through the bridge of the temperature transmitter to generate an unbalanced signal, and after amplification, it is converted into a 4-20mA DC signal to the working instrument, and the working instrument displays the corresponding temperature. value.