How to Measure Strain and Pressure With Strain Gage Sensors

Strain and pressure sensors are widely used in many measurement applications, from static to dynamic. For example, they are commonly used inside load cell sensors for weight measurement, and in certain kinds of accelerometer sensors. They are used for measuring deflection, vibration, load, torque, pressure, stress and strain. In short, they are employed for the measurement of forces. The strain gage is also sometimes called an electrical resistance strain gage, or simply a resistance strain gauge. Gage can also be spelled gauge - this is simply a matter of convention and makes no difference. But they are also used in highly dynamic measurement applications, where their outputs are fluctuating widely because of the deformation of a mechanical object under test. Imagine the body panels of an automobile which is being driven rapidly across Belgian blocks at very high speeds. Or being mounted on a drive shaft spinning at thousands of RPMs, and being subjected to tension and torsion as the load on the shaft changes dynamically. There are countless applications for strain gages.

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