Model 3900

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Dynamic Embedment (Electrical Resistance)

The Model 3900 Embedment Strain Gauge is designed for the measurement of dynamic strains in concrete structures, earth fills and soils. It comprises a full bridge strain gauged proving ring coupled, between two flanges, with a spring and shaft. When the flanges move relative to one another, the tension in the spring changes and hence the strain in the proving ring. A PVC tube serves as a protective housing and holds the gauge at the desired initial tension.


Standard Range: 5000 µε
Resolution: 0.125 mV/V nominal
Accuracy¹: ±0.25% F.S.
Nonlinearity: <0.5% F.S.
Temperature Range²: −20°C to +80°C
Active Gauge Length³: 203 mm

¹Accuracy established under laboratory conditions.

²Other ranges available on request.

³Other lengths available on request.