Thermistor 4-20mA Temperature Transmitters NTC 10K ohm 0-50C and more
A thermistor is a low cost accurate temperature sensor. It is easily connected using standard copper wire.
NTC Encapsulated Bead Thermistor temperature sensors
The thermistor transmitter converts the thermistor resistance change to 4-20mA current change. The 4-20mA signal allows the thermistor, when using a thermistor transmitter, to be connected to a PLC. This allows thermistors to be used as a part of a modern control system.