W7 SIL2 Diathermic oil filled – Tension output – SIL2



The W7 series of Gefran, are pressure transmitters 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 quantity is transformed into an electrical measure by means of the thick film strain-gauge technology. The SIL2-certified version makes the product suitable for use in Functional Safety applications, particularly in the process plants for the production of polymers, where it is an essential requirement.


  • 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
  • SIL2 approvals for Functional Safety
  • 1/2-20UNF, M18x1.5 standard threads; other types available on request
  • Other diaphragms available on request
  • Autozero function on board / external option
  • Drift Autocompensation function (SP version)
  • 17-7 PH corrugated diaphragm with GTP+ coating