Opsens Solutions’ fabrication processes ensure an exact definition of the gauge factor, making OSP-A sensor the most accurate fiber-optic strain gauge sensor in the industry.
Combined with Opsens’ WLPI signal conditioner technology (Patent #7,259,862) and the inherent advantages of fiber optics, the OSP-A delivers unprecedented repeatability and reliability in the most adverse conditions such as high levels of electromagnetic fields as well as high voltage and rapid temperature cycling conditions.
The OSP-A uses two optical fibers that are precisely aligned inside a microcapillary tube to form an optical Fabry-Pérot interferometer. This makes the OSP-A strain gauge completely immune to any electromagnetic interference.
It is completely insensitive to transverse strains and temperatures and its micro-miniature size makes the OSP-A fiber optic sensor ideal for space-constrained applications such as intelligent load-sensing bolts and studs. Careful choice of materials for the sensor, fiber coating and cable buffering permit a high temperature operating range from -40 °C to +250 °C.
This miniature and robust fiber optic strain gauge sensor, available in different cables and sheath options, may be customized to customer specific requirements or for OEM-type applications.
Benefits
- Maintenance free without drifting over time
- Outstanding repeatability
- No temperature compensation required
- Insensitive to transverse strains
- Intrinsically safe
- Easy to set-up and operate
- EMI/RFI and microwave immune
Applications
- Civil engineering and geotechnical applications
- Marine and subsea conditions
- High voltage environments
- Radiated environment
- Nuclear and hazardous environments
- ATEX environment and zone exposed to explosive atmosphere
| Measuring range (other ranges available on request) |
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| Resolution |
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| Temperature sensitivity | Technology requiring no temperature compensation
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| Transverse strain sensitivity | Insensitive |
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| Temperatures operating range | -40 °C to +250 °C (other temperatures available upon request)
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| EMI/RFI susceptibility | Complete immunity |
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| Cable length | Up to 3 km (Sampling rate dependent, consult factory for more details)
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| Cable sheathing | From ruggedized flexible outdoor cable to robust stainless steel cable
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| Optical connector | SCA (Standard), SC (Standard), other connector available on request
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| Signal conditioner compatibility | All Opsens Solutions’ WLPI signal conditioners |
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| Linearity, Repeatability and Hysteresis error (combined) | < 0.15%
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| Return to initial strain level (Lag & Latency) | Instantaneous
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Opsens Solutions Inc. reserves the right to make any changes to the above specifications without prior notice.
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