Seeking help with temperature transmitter
Thread Content
Can a temperature transmitter automatically convert the input resistance and voltage into the corresponding temperature value? Based on the percentage of the converted temperature within its corresponding range, the corresponding current output is calculated; otherwise, how could the 4-20mA signal output of a temperature transmitter be determined?
I suggest you take a look at the basic principles of thermometers, such as the unbalanced bridge principle of thermistor thermometers, which involves reading the voltage value in order to calculate the resistance value. The function of the transmitter is the same as that of a DCS module.
A temperature transmitter converts the input resistance or voltage signal into a corresponding 4–20mA current signal, which is then sent to a display instrument for temperature indication; some transmitters come equipped with a display, allowing the temperature to be shown directly.
If the temperature transmitter does not have its own display unit, its function is to convert the MV values from resistors and thermocouples into corresponding current signals, which are then sent to the indoor display unit.