Spot weldable strain gauges are designed for application on steel structure or reinforcement bars where strain monitoring is required and the installation space is limited.
They are mainly composed by a vibrating wire sensor placed between two small spot-weldable plates; the gauge shall be fixed to the metal surface using a spot-welder. The reading is obtained by placing the instrument red cover containing the coils for wire exciting and signal reading. An NTC thermistor sensor is built-in into the cover.
The sensor is pre-tensioned at mid-scale: at order time, Customer can choose the pre-tension desired.