Load Cell Circuit

Although there are many varieties of force sensors strain gauge load cells are the most commonly used type.

Load cell circuit.

It converts a force such as tension compression pressure or torque into an electrical signal that can be measured and standardized. The strength of the signal changes in proportion to the force applied. A load cell or loadcell is a transducer which converts force into a measurable electrical output. Most load cell circuits are setup in a wheatstone bridge configuration which is a simple circuit commonly used to measure an unknown resistance.

A load cell is a force transducer. Specifically load cells are force transducers converting the kinetic energy of a force such as tension compression pressure or torque into a measurable electrical signal. You may built your own load cell amplifier to get the lower cost. Except for certain laboratories where precision mechanical balances are still used strain gauge load cells dominate the weighing industry.

As the force applied to the load cell increases the electrical signal changes proportionally. The most common types of load cell used are hydraulic pneumatic and strain gauge. In bar strain gauge load cells the cell is set up in a z formations so that torque is applied to the bar and the four strain gauges on the cell will measure the bending distortion two measuring compression and two tension. As we know load cell amplifier is pretty expensive with fair price range of 100 300 usd.

Here the two scheme diagram of load cell amplifier circuit.