A strain gage by itself acts like a variable resistor, whose value changes when the strain guage sees deflection and deformation. But since strain included resistance changes are extremely small, the best way to capture those changes is by using a Wheatstone bridge circuit where we can capture the change in resistance as a function of change in voltage. Strain gages come in many different configurations, choose the right strain gage for your application depends on which direction the primary strain is running, what type of the strain you are measuring, and the target measuring area.

Features
Pre-wired for fast Installation
No soldering at measurement end
Broad temperature range
Clear Alignment Marks
Linear pattern precision gages with grids
For general purpose and stress analysis applications

Technical Parameters
Type: BX120-5AA metal foil resistance strain gauge
Resistance: 120 ± 0.1 ohm
Strain limit: 20000um/m
Dimensions: 9.5mm * 5.7mm
Sensitive to grid size: 5mm * 3mm
Sensitivity coefficient: 2.0 ± 1% mV/V
Temperature range of use: -20~+80℃
Lead Material: 20cm insulation enameled wire

Package Included:
4 x BX120-5AA Precision Resistive Strain Gauge