Pt100 Sensor with 4-20mA Transmitter from Mission Sensors. A rigid Pt100 probe on a 6mm 316L sheath with a 4-20mA transmitter built into its IP67 weatherproof head, so the loop runs back on ordinary two wire copper cable. See the product below for specifications, part numbers and the datasheet, or talk to our engineers about custom lengths, terminations and calibration.