Study of Strain Gauge

The Scientech 2304 Strain Gauge Trainer provides a comprehensive study of strain gauges and their applications in strain measurement. It enables the study of bridge configurations of strain gauge transducers and the signal conditioning circuits required for accurate measurement.The system uses a cantilever beam arrangement to generate strain on the sensor, similar to the working principles used in strain gauge load cells and pressure sensors.

Strain gauges are firmly mounted on the cantilever at the point where strain is to be measured. When weights are placed at the free end of the cantilever, the resulting strain changes the resistance of the strain gauge. This variation is detected using a full bridge configuration, commonly used in strain gauge-based transducers. A seven-segment LED display shows strain in microstrain units. Different weights are provided to perform linearity and sensitivity experiments. A detailed experiment manual is included with the system.

The setup uses a cantilever beam arrangement, where a strain gauge sensor is mounted at the point of maximum stress. When weights are applied at the free end, deformation occurs, causing a change in the electrical resistance of the strain gauge.

This resistance variation is measured using a Wheatstone bridge (full bridge configuration). The processed signal is displayed on a 3-digit LED display in microstrain units, enabling accurate measurement and analysis.

Applications

• Understanding strain gauge load cell operation
• Study of strain gauge pressure sensors and pressure transducers
• Industrial training on strain gauge transducer systems
• Educational labs for strain measurement and instrumentation
• Analysis of sensor linearity and sensitivity

Features of Strain Gauge

• Self-contained and easy to operate
• Sensitive, Linear, Stable & Accurate
• Test-points to observe input output of each block
• Onboard gain adjustment
• Onboard offset null adjustment
• Built in DC Power Supplies
• 3 digits LED display
• Onboard Cantilever arrangement
• High repeatability and reliability

Scope of Learning

• Study of strain measurement using strain gauges and cantilever assembly.
• Determination of linear range of operation of strain measurement.
• Determination sensitivity of 2304.