PT100 Sensor Probe S120 Posted on August 10, 2015 by admin New PT100 Sensor Probe we are looking at PT100 S120 Sensor Probe Body Model Stainless Steel, M12 x1.75 process interface, M8 x 1.25 Gland. Houses a 3mm PT100 pocket for a PT100 or Thermocouple. Planned standard supply will be a 3 wire PT100.