Frictional type Axial Strain Transducer

Frictional type Axial Strain Transducer FGAH-1B-R／FGAH-1B-H

This transducer measures axial strain of steering tie-rod of a car and consists of two types FGAH-1B-R and FGAH-1B-H for which a cross section of the rod is round shape or hexagon's. It is also suited to measure axial strain of a tension rod used in aseismic reinforcement structure or in steel frame structure. Since frictional strain gauges are used in this transducer, installation is completed and it gets ready for measurement by merely pinching the rod with the transducer, without detaching the rod. There is no need of technical skill and complicated works for attaching strain gauges on the rod.

Frictional type Axial Strain Transducer FGAH-1B-R／FGAH-1B-H
Features
  • Easily installed by just clamping-on without detaching the existing rod
  • Tensile force management of rod between sheet piles or in architectural structures is easily achieved
  • Transducer can be removed after use and used repeatedly
  • Applicable rod is round rod of diameter 10 to 25 mm or hexagonal rod of width across flats 13 to 25 mm
  • Small and light construction to allow installation in a restricted space

  • Specifications
    Type FGAH-1B-R FGAH-1B-H
    Applicable shaft Round shape
    φ10.0 to 25.0mm    		 Hexagon shape
    Width across flats
    13.0 to 25.0mm
    Capacity

    ±1000 x 10-6 strain
    Rated output

    Approx. 2600 x 10-6 strain
    Non-linearity 1%RO
    Allowable temperature range -30 to +60℃(no dew condensation)
    Frequency response Approx. 6.5kHz
    Input/output resistance 1000Ω±3%
    Sensor mode Full bridge
    Dimensions Approx. φ52 x 35mm
    Weight Approx. 55g(excluding spacers and cable)
    Protection rating Equivalent to IP51
    Recommended exciting voltage 2V
    Allowable exciting voltage 5V
    Input/output cable φ3.2mm 0.08mm² 4-core shielded vinyl cable 5m

     

    [Test conditions] Test piece

    　1. Diameter 10mm
    　2. Inner diameter 6.2mm
    　3. Material SNCM439
    　4. Elastic modulus 208,000N/mm2 (our in-house test result)
    　5. Poisson’s ratio 0.29 (our in-house test result)
    　6. Surface roughness Ra1.2
    　7. Hardness HRC38

    *This transducer may not be applicable depending on the material, surface roughness and/or surface treatment of the rod.

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