OEP-AC Fiber Optic Extensometer

Extensometer sensor with anchors (Concrete)

About the OEP-AC Fiber Optic Extensometer

The Fiber optic extensometer sensors OEP-AC (for concrete) and OEP-SW (for steel) with anchors are developed for the monitoring of steel & concrete structures. These sensors can be used to monitor single crack as well as multiple concrete fissures. Applications like this require a robust and reliable sensor and that is exactly what these extensometer sensors are!

Both of the sensors have the well-known Fiber Optic characteristics. (Intrinsically safe, oustanding repeatability, long term monitoring and maintenaince free without drifting over time.)

Features OEP-AC

  • Maintenance free without drifting over time
  • Outstanding repeatability
  • No temperature compensation required
  • Insensitive to transverse strains
  • Intrinsically safe
  • Easy to set-up and operate
  • No lag - no latency

Applications for OEP-AC

  • Civil engineering and geotechnical applications
  • Marine and subsea conditions
  • High voltage environments
  • High temperature applications
  • Nuclear and hazardous environments
  • ATEX environment and zone exposed to explosive atmosphere


Measurement range
±1000µε, ±2500µε
0,15 µe
A: +/- 3% F.S., B: +/- 3% F.S., C: +/- 10% F.S.
Response time
Readout unit dependent
10mm x 0,230 mm O.D.
Cable length
Up to 3km
Optical connector
SCA (standard), SC (standard), other connector available on request
Signal conditioner compatibility
All WLPI signal conditioners
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