difference between temperature indicator and temperature transmitter
The temperature transmitter converts the signal into a current 4-20mA and sends it back to a controller. The controller can then manipulate some outputs based upon the temperature input. The temperature indicator is a readout of the temperature and it can be in a number of places in the system. An output of the controller, connected to the transmitter or as a part of the transmitter. Hope this helps... Source(s): godzyx Â· 9 years ago.