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EFO Embeddable Strain Sensor

HIGH RESOLUTION

FIBER OPTIC STRAIN GAUGE

STATIC & DYNAMIC RESPONSE

Rugged, stainless steel construction and immune to EMI/RFI/lightning, the EFO  fiber optic strain gauge is designed to be embedded in concrete.

Description

The EFO is a 70-mm long fiber optic strain gauge designed to be embedded in concrete. It consists of a stainless steel body, with two flanges for better adherence to concrete.

The sensor is based on Fabry-Perot interferometry. The strain gauge is bonded in a very small diameter longitudinal hole located in the center of the steel body.

Installation

The EFO embedded strain gauge can be installed into concrete structures in two different ways: it can be cast directly into the wet mix or encapsulated into a concrete briquette which is then cast into the wet mix. It is also possible to set the gauge into hardened concrete by grouting it or the briquette containing the EFO into a pre-drilled hole.

The sensor may be configured for use in special concretes, like high performance and powder reactive concretes.

Specifications

Range 

±1500 με (other ranges available upon request)

Resolution

0.01% F.S.

Operating temperature

−40 to +55°C, operating temperature is fiber optic cable dependent

EMI/RFI susceptibility

Intrinsic immunity

Gauge dimensions

 

Diameter

12.5 mm

Length

70 mm

Fiber optic cable

CFF-UD3-1F

Connector

ST

Ordering Info

Please specify:

  • Range
  • Cable length (2 meters min.)
  • Readout
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