W7 PLc

Main features & Overview


The W7 Performance Level 'c' Series are pressure sensors for use in high temperature applications where the process temperatures may reach 315°C (600°F) such as high temperature engineered polymers.

The W Series utilizes standard melt pressure principles and construction; strain sensing technology is bonded foil strain gage.

A near incompressible mixture (diathermic oil) is used for pressure transmission.


  • Performance Level PL 'c'
  • Pressure ranges from: 0-35 to 0-1000 bar / 0-500 to 0-15000 psi
  • Accuracy: < ±0.25% FSO (H); < ±0.5% FSO (M)
  • Fluid-filled system for temperature stability
  • Oil filling meets FDA requirements CFR 178.3620 and CFR 172.878
  • Oil filling volume: W70 (30mm3); W71, W72, (40mm3)
  • 1/2-20UNF, M18x1.5 standard threads; other types available on request
  • Other diaphragms available on request
  • Autozero function on board / external option
  • 17-7 PH corrugated diaphragm with GTP coating


Gefran product range brochure
Melt pressure sensors
4.0 Gefran product catalog
4.0 plastic application catalogue
W7 PL 'c' Datasheet
WE-W7 PL 'c' - User Manual


EU Conformity declaration_not amplified Melt K min 500bar
Performance Level 'c' Certification ME/M7, WE/W7, KE/K7 Series
GTP+ FDA Certificate
EU conformity declaration_W series FS min 500bar PL c
EU conformity declaration_W series FS over 500bar PL c
UK Conformity declaration - Melt W min 500bar PLc
UK Conformity declaration - Melt W over 500bar PLc