OPP-B Fiber Optic Pressure Sensor

MEMS-based fiber optic pressure sensor for the harshest environments

Opsens Solutions’ OPP-B, MEMS-based designed for demanding applications. The OPP-B model is a bare fiber optic pressure sensor (no metal housing) for applications requiring minimally invasive in-situ pressure measurement.

The OPP-B pressure sensor is compatible with all Opsens Solutions’ WLPI (Patent #7,259,862) signal conditioners. With the inherent advantages of fiber optic, it is not subject to interference from electromagnetic interference, vibrations and lightning that may be present in the sensing environment.

The OPP-B sensor delivers long term accuracy, durability, low drift and high fidelity pressure measurements in the harshest environments such as EMI, RFI, high voltage, combustive/explosive and high temperature.

This compact and very robust probe can be customized to specific customer requirements. The fiber optic extension cable can be as long as 3 kilometers.


  • Robust design
  • No drift over time, reliable results during years
  • Intrinsically safe
  • Can be located 3 km from the readout unit
  • Immune to EMI, lightning
  • Small size
  • Low thermal shift


  • Geotechnical applications
  • In-situ pressure monitoring in food processing
  • Harsh subsurface monitoring equipment
  • Aerospace and Defense
  • Static or dynamic pressure measurements conducted in confined spaces
  • Pressure monitoring in pumping stations
  • Hazardous and nuclear environments
  • High temperature environments
Measuring range (other ranges available on request)

25 PSI

(172 kPa)

50 PSI

(345 kPa)

100 PSI

(690 kPa)

500 PSI

(3500 kPa)

1 000 PSI

(7000 kPa)


Precision (Excluding thermal effect)

±0.5 % F.S.

±0.2 % F.S.


±0.2 % F.S.


±0.2 % F.S.


±0.2 % F.S.


Thermal coefficient of Zero

< 0.04% F.S / °C

< 0.04% F.S / °C


< 0.03% F.S / °C


< 0.01% F.S / °C


< 0.01% F.S / °C


< 0.01 % F.S. (Range dependant)


Proof pressure

200% F.S.

Temperature operating range

up to 100°C (other temperatures available upon request)

EMI/MRI Lightning

Complete immunity


Depending the Sensor OPP-B or OPP-BT


OPP-B = 0.5 gram and OPP-BT = 2 grams

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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