Spot Weldable Strain Gauges are used to monitor strain in steel structures and on reinforcement bars where space may be limited. Change in stress is determined by multiplying the measured strain by the modulus of elasticity.
The Spot Weldable Strain Gauge of PMT can be spot welded or epoxy bonded on steel structures, re-inforced bars and struts. It can also be epoxy bonded on concrete structures. The gauge is pre-tensioned by a small compression spring. Initial tension is set during installation, allowing for maximum range in tension or compression as required. A sensor coil housing arrangement mounted over the strain gauge completely encloses the sensor, forming a watertight enclosure. When load is applied to the steel member, the deformation of the structure changes thus the frequency output produces a proportional change which is transmitted through a cable to the readout unit.
Introduction:
Features:
- - Accurate, robust, and low cost
- - Long term stability with high reliability
- - Suitable for large strain measurement
- - Frequency signal can be transmitted over long distance
- - Built-in thermistor for temperature measurements.
Specifications:
| Sensor type | Vibrating Wire |
| Range | 3000 microstrain |
| Resolution | 1 microstrain |
| Accuracy | ±0.1% F.S. |
| Temperature Range | -20 to 80°C |