RTD type Transducers are suitable for Head mounting solutions, and comes with 4-20mA outputs as the standard products. These are loop power devices with 10-30VDC range as the loop power and comes with standard
4-20mA for instrumentation purpose.
Rays Electronics manufactures RTD type transducers. Rays Electronics can also supply 0-20mA, 0-10VDC and 0-5VDC models in Head type sensors.