Description
Vibrating Wire Strain Gauge – Model EDS-21V-SW
The EDS-21V-SW vibrating wire strain gauge is designed for surface strain measurement on steel and concrete structures.
It can be spot-welded or epoxy-bonded to steel elements such as girders, struts, and tunnel linings, and epoxy-bonded directly to concrete surfaces.
The strain gauge assembly includes a sensor coil housing mounted directly over the active element, providing a completely watertight enclosure for long-term field monitoring.
A pair of precision mounting clamps is supplied to secure the housing to the substrate with epoxy adhesive, ensuring strong adhesion and accurate strain transfer under varying field conditions.
Specifications
| Parameter | Details |
|---|---|
| Instrument Name | Vibrating Wire Strain Gauge |
| Model | EDS-21V-SW |
| Sensor Type | Vibrating wire |
| Applications | Strain measurement on steel members, struts, and concrete structures |
| Installation Method | Spot welding or epoxy bonding |
| Measured Parameter | Strain |
| Construction | Stainless steel with watertight sensor housing |
| Typical Range | ±1500 µstrain |
| Accuracy | ±0.1 % FS |
| Temperature Range | −20 °C to +80 °C |
| Protection | IP-68, hermetically sealed |
| Output | Vibrating wire frequency with thermistor for temperature compensation |
| Accessories | Pair of mounting clamps, epoxy adhesive kit |
Key Features / Advantages
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Versatile installation – can be welded or epoxy-bonded on steel and concrete
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Watertight housing ensures long-term stability and corrosion resistance
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High accuracy and thermal compensation for precise strain readings
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Suitable for surface strain monitoring in bridges, tunnels, and heavy structures
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Compatible with digital dataloggers and automated monitoring systems
