FiberStrike FBG Linear & Rotary Position Sensors
FBG-based linear and rotary displacement sensors with configurable mounting and end fittings, available in aluminium or stainless steel bodies for harsh and submersible service.
Technical overview
Both variants are passive FBG devices that can be multiplexed on a shared fiber and driven over fiber thousands of feet long with no loss of sensor performance. The linear sensor covers travel from under 1 inch to 18 inches; the rotary sensor's datasheet quotes a 300 degree rotation range while the FiberStrike web pages quote a full 360 degrees, so the two CEL sources disagree. Both use FC/APC connectors, greater than 70 percent peak reflectivity and a 4 nm measurement window within 1512-1584 nm. Options include a spring-loaded displacement rod, rubber bellows and a fully sealed submersible version.
Features
- Immune to electromagnetic and radio frequency interference
- No spark hazard, sensor requires no electrical power
- 18" stroke length on linear sensors and 360 degree range on rotary sensors
- Compatible with typical FBG interrogators
- Through connection allows multiplexing of sensors
- Multiple mounting and end configurations
- Temperature compensation
- Sealed from dust and moisture for harsh environments
- Body available in both aluminum and stainless steel
Specifications
| Parameter | Value |
|---|---|
| Linear sensor - Sensitivity | 1.5pm / 0.001" typical pm |
| Linear sensor - Accuracy | +/- 0.005 in |
| Linear sensor - Resolution | 0.003 in |
| Linear sensor - Travel range (datasheet label erroneously reads 'Rotation range') | < 1" to 18" in |
| Linear sensor - Operating temperature | -40 F to 250 F degF |
| Linear sensor - Operating speed | 2"/second in/s |
| Rotary sensor - Sensitivity | 8.3pm / degree rotation pm |
| Rotary sensor - Accuracy | +/- 0.005" in |
| Rotary sensor - Resolution | 0.1 degree rotation deg |
| Rotary sensor - Rotation range | 300 deg |
| Rotary sensor - Operating temperature | -40 F to 250 F degF |
| Rotary sensor - Operating speed | 10 radians/second rad/s |
| Connector (both variants) | FC/APC |
| Peak reflectivity (both variants) | >70 % |
| Wavelength range for measurement (both variants) | 4 nm |
| Available wavelengths (both variants) | 1512 nm to 1584 nm nm |
| Standard connector cable length | 2 ft |
| Linear travel range - value as published on the FiberStrike product page | from less than 1 inch up to 18 inches in |
| Linear accuracy - value as published on the FiberStrike product page | 0.005 in |
| Rotary range - conflicting value published on the FiberStrike product page | 360 deg |
| Rotary accuracy - conflicting value published on the FiberStrike product page | 0.25 deg |
Applications
- Structural health monitoring of civil structures
- Feedback for pneumatic and hydraulic control systems
- Automotive and aerospace testing
- Industrial equipment control
- Electrical transformer monitoring
- Test environments
- Monitoring bridge expansion joints and moveable sections
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