HWE Diathermic oil FDA – HART – SIL2 – PLd



  • The HWE series of Gefran are pressure transmitters with HART communication protocol for use in high-temperature environments.
  • The main characteristic of this series is the capability to read the temperature of the media up to 315°C.
  • The constructive principle is based on the hydraulic transmission of the pressure.
  • The fluid-filled system assures temperature stability.
  • The physical measure is transformed into an electrical measure by means of strain-gauge technology.


  • Pressure ranges from: 0-17 to 0-1000 bar / 0-250 to 0-15000 psi
  • Accuracy: < ±0.25% FS (H); < ±0.5% FS (M)
  • Fluid-filled system for temperature stability
  • Oil filling meets FDA requirements CFR 178.3620 and CFR 172.878
  • Oil filling volume: HWE0 (30mm³); HWE1, HWE2, HWE3 (40mm³)
  • 1/2-20UNF, M18x1.5 standard threads; other types availableon request
  • Autozero function on board / external option
  • 17-7 PH corrugated diaphragm with GTP+ coating