Bidirectional differential pressure sensor

The innovative OPP-GD, is a compact differential pressure sensor working in both direction (bidirectional sensor). With a length, less than 100 mm and a diameter less than 40 mm, the sensor can be easily mounted in confined space. The fiber optic extension cable can be a maximum length of 3 kilometers.

The differential pressure sensor efficiently combines two major benefits: a very robust design to sustain high static pressure in harsh environment and high sensitivity to detect small pressure variation. Even with a static pressure of 30 bar, the sensor can measure pressure variation of a few millibars with an accuracy of 0.1%.

The intrinsically safe nature of the technology enables pressure monitoring in hazardous environment with explosive atmosphere.

The fiber optic technology provides complete immunity from electromagnetic interferences, vibrations, high voltage, electrostatic surge, and lightning. It’s also resistant to high level of radiation.



  • Very compact and ultra-robust
  • Fully bidirectional
  • Complete EMI/RFI/Lightning immunity
  • Intrinsically safe
  • High precision (~mbar)


  • Fuel Management
  • Leak detection in pressurized system
  • Flow rate analysis
  • Eplosive atmosphere conditions
  • Detection of small pressure variations
  • Strong EMI or High voltage areas
  • Precise liquid level monitoring
  • Cooling and HVAC systems
Maximum static pressure

30 bar (higher ranges available on request)

Differential pressure range

± 200 mbar, ± 1000 mbar and ± 2000 mbar (other ranges available on request)


< 0.02 % F.S. (Range dependant)


±0.1 % F.S. (Excluding thermal effect)

EMI/MRI Lightning

Complete immunity


Stainless steel or composite


0.6 Kg (Stainless steel)

Cable length

Up to 3 km (Sampling rate dependent, consult factory for more details)

Optical connector

SCA (Standard), SC (Standard), other connector available on request

Cable sheathing

From ruggedized flexible outdoor cable to robust stainless steel cable

Signal conditioner compatibility

All Opsens Solutions’ WLPI signal conditioners

Opsens Solutions Inc. reserves the right to make any changes to the above specifications without prior notice.

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