Standard Strain Gauge

Strain Gauge (sometimes referred to as Strain Gauge ) are exceptionally useful measurement tools, often because of their sensitivity. As evidence, strain Gauge are typically used as the sensing elements in precision load cells, the most precise "load" measurement instruments available, traceable to the governing Standards boards like NIST in the USA.

What is Strain?

When external forces, like pressures, rotation, heat, etc, are applied to a stationary object; stress and strain are the results. Strain is the physical displacement and deformation that occurs, while stress is defined as the object's internal resisting forces. Strain can be positive (due to elongation of the object) or negative (compressive, due to contraction of the object). Figure 1 shows a simple example of a force-induced positive strain. When the force pulls on the rectangular piece it gets longer.

What is a Standard Strain Gauge?

A standard strain gauge works to measure the amount of strain on a given object. At its most basic form, a standard strain gauge converts a change in dimension to a change in electrical resistance. The ratio of mechanical strain to electrical resistance is what is known as the Gauge Factor and is specific to the type/lot of strain gauge used. Strain gauges can be used to sense expansion as well as contraction and produce positive or negative signals to distinguish between the two.

How Does a standard Strain Guage Work?

In general, a strain gauge makes use of very fine wire or metallic foil arranged in a grid pattern. The electrical resistance of the Strain Gauge metallic grid changes in proportion to the amount of strain experienced by the object, offering the operator a clear, accurate measurement of strain, e.g. how much the item is stretched or twisted.

Strain Gauge come in many different shapes, sizes, and patterns depending on the parameter being measured. A Strain Gauge designed for torque measurement is shown below.

Buy Standard Strain Guage Online

Rudrra is one of the leading manufactures and supplies Standard Strain Gauge at industrial competitive prices. These gauges can be used to sense variations in force, pressure, tension, civil beam Load, and weight among other parameters. The cell is environmentally protected with a waterproof seal.