Fibre Pressure Sensor

A new fibre grating pressure sensor is now available at O/E LAND INC. The new fibre pressure sensor OEFPS-XXX series are based on a patent pending technology and profits from our advanced fibre Bragg gratings fabrication expertise. Fibre grating pressure sensors are used to measure pressure in air, gas, water, liquid or other mediums. An optional temperature sensor can be built in with pressure sensor for monitoring both pressure and temperature at the same time. In this model, the fibre grating is not in physical contact with the medium in which the pressure should be measured.

Model number: OEFPS-XXX

Figure 1: Fibre Pressure Sensor OEFPS-300B
Figure 1: Fibre Pressure Sensor OEFPS-300B

Specifications for Low Pressure range

 
Parameter Unit Value
OEFPS-200A OEFPS-200B
Range psi Up to 100
Sensitivity pm/psi 400 for pressure < 10 psi, 40 for pressure < 100 psi2
Size(diameter x length) mm 30 x 100
Temperature sensor - None Built-in
Pressure connector - Standard ¼" Male Connector
Fibre Output - Single Single or double
Fibre Cable - 3 mm (armoured cable option available) Armoured cable
Operational temperature °C 0 - 80 0 - 150

Specifications for Medium Pressure range

 
Parameter Unit Value
OEFPS-300A OEFPS-300B
Range psi Up to 300, 500, 10001
Sensitivity pm/psi 5 for pressure < 500 psi, 3.5 for pressure < 1000 psi2
Size(diameter x length) mm 30 x 100
Temperature sensor - None Built-in
Pressure connector - Standard ¼" Male Connector
Fibre Output - Single Single or double
Fibre Cable - 3 mm (armoured cable option available) Armoured cable
Operational temperature °C 0 - 80 0 - 150

Specifications for High Pressure range

 
Parameter Unit Value
OEFPS-400A OEFPS-400B
Range psi Up to 10 000
Sensitivity pm/psi 2.0 for 10 000 psi
Size(diameter x length) mm 30 x 100
Temperature sensor - None Built-in
Pressure connector - Standard ¼" Male Connector
Fibre Output - Single Single or double
Fibre Cable - 3 mm (armoured cable option available) Armoured cable
Operational temperature °C 0 - 80 0 - 150
1The pressure range can be adjusted based on the customer requirements.
2The sensor sensitivity is also adjustable and depends on the pressure range.

Applications:

Measured Data

The measured results for the sensors with 300 and 600 psi pressure ranges are shown in Fig. 2, and 3, respectively. In both cases, the shift in the central wavelength is linear and almost the same sensitivity is obtained. However, for higher pressure ranges (e.g. 1000 psi and 10,000 psi), we have to reduce the sensitivity to avoid breaking the fiber.

 
Figure 2: The wavelength shift as air function of applied pressure for 300 psi pressure range

Figure 3: The wavelength shift as a function of applied pressure for 600 psi pressure range

Fibre Bragg grating temperature sensors with any wavelength can be delivered in a short time. Low cost product, quick delivery time, high reliability and good performance are our products' main features.


Note: All specifications are subject to change without notice

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