SFO-W Spot Weldable Strain Sensor
The SFO-W is a spot-weldable fibre-optic strain sensor — a stainless-steel tube welded onto a steel sheet — for long-term, precise strain measurement on flat or cylindrical steel structures.
- Range
- ±1500 microstrain
- Operating temperature
- -40 to +55°C
- Resolution
- 0.01% of full scale
Overview
In detail
How it works
A Fabry-Perot fibre-optic strain gauge is bonded inside the sensor's small-diameter stainless-steel tube, so it follows the tensile or compressive movement transmitted through the spot-welded tube. Because the sensing element is optical, the SFO-W is intrinsically immune to electromagnetic interference.
Deployment
The gauge is spot-welded directly onto flat or cylindrical steel surfaces and can be installed by a technician without a skilled welder, making it suited to long-term structural strain monitoring.
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- Part number
Specifications
Technical specifications
- Range
- ±1500 microstrain
- Operating temperature
- -40 to +55°C
- Resolution
- 0.01% of full scale
- Gauge dimensions
- 50.8 x 1.1 x 4.7mm (L x T x W)
- Cable
- CAF-UD3-1F fibre-optic cable, ST connector, 2m minimum length
Related
Often specified alongside
Geosystems
Vibrating Wire Strain Gauge SM-5
- Range
- 3000 µε
- Accuracy
- +/- 0.5% F.S.
- Temp
- −20 to +80°C
- Range
- 200 to 35,000 kPa (standard steps up to 35,000 kPa)
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