Categories: ,


ModelRTD4AL is an RTD style temperature sensor that is used to detect the temperature of a pipe, vessel or tank and send a signal to a controller or a control panel, energizing a heat trace circuit.

  • Resistance: 100 ohms at 0°C Alpha=0.00385 ohms/ohm/°C
  • Housing: Aluminum NEMA 4X
  • Sensor sheath: 316 stainless steel
  • Sensing range: -100F to 900F
  • Accuracy: +/- 1F @ 32F
  • Connection: 3/4-in NPT
  • Use 16-22 AWG shielded instrument cable
  • CSA certified to U.S. and Canadian standards
  • Class I, Div. 2, Groups A, B, C, D
  • Class II, Div. 2, Groups E, F, G

View Data Sheet


  • Pipe Heating
  • – Freeze Protection
  • – Process Temperature Maintenance


  • Tank / Vessel Heating

Technical Resources

Literature: L-192

Download PDF