Strain Gauge Load Cell Diagram

In a load cell the resistors are replaced with strain gauges and arranged in alternating tension and compression formation.

Strain gauge load cell diagram.

Figure 1 shows a single end beam load cell with these components. How strain gauge load cell works the principle of operation of the strain gauge load cell is based on the fact that the resistance of the electrical conductor changes when its length changes due to stress. E is the measured strain e is tensile strain and e is compressive strain. From the resulting data can be easily determined using the equation above.

Gf is the gauge factor which should be specified by the gauge manufacturer. Features benefits and disadvantages of strain gauge load cells. The four wires of the load cell should be connected in the correct way otherwise this will not work. Common types of load cells.

On this cylinder if the strain gauges are bonded the strain gauge also is stretched or compressed causing a change in its length and diameter. Our strain sensor model xt50 is used to measure elongation in structures in such applications as on board weighing vehicle stability control and elevator overload systems. E s is the simulated strain. R l is the lead resistance.

The four wires of the load cell or strain gauge are connected with the hx711. Strain gauge load cell diagram. Hi friends in this article i am going to describe you strain gauge working principle gauge factor and strain gauge load cell working. There are several types of strain gauge load cells.

The red wire of the strain gauge or load cell should be connected with the e pin of the hx711 break out board. If lead lengths are long rl can significantly impact measurement accuracy. Basic principle of strain gauge load cell when steel cylinder is subjected to a force it tends to change in dimension. Cu ni alloy is commonly used in strain gauge construction as the resistance change of the foil is virtually proportional to the applied strain.

A strain gauge is a passive transducer that converts mechanical displacement into the change of resistance a strain gauge sensor is a thin wafer like device that can be attached to a variety of materials to measure applied strain. The strain gauges at the top of the beam are in tension under the load while those at the bottom are in compression under the load. As you can see in the connections diagram. The force being measured deforms the strain gauge in this type of load cell and the deformation is measured as change in electrical signal.

When force is exerted on the load cell the structure and resistance of the strain gauges changes and is measured. R g is the nominal gauge resistance which should be specified by the gauge manufacturer.