Working principle of weighing sensor

2025-07-28

A weighing sensor is actually a device that converts a mass signal into a measurable electrical signal output. When using sensors, the actual working environment in which the sensor is located should be considered first, which is crucial for the correct selection of weighing sensors. It is related to whether the sensor can work normally, its safety and service life, and even the reliability and safety of the entire weighing apparatus. There are qualitative differences between the new and old national standards in the basic concepts and evaluation methods of the main technical indicators of weighing sensors. There are mainly several types including S-type, cantilever type, spoke type, plate ring type, film box type, bridge type, and drum type.

The resistance strain type weighing sensor is based on the principle that an elastic body (elastic element, sensitive beam) undergoes elastic deformation under external force, causing the resistance strain gauge (conversion element) attached to its surface to also deform. After the resistance strain gauge deforms, its resistance value will change (increase or decrease), and then the corresponding measurement circuit will convert this resistance change into an electrical signal (voltage or current), thus completing the process of converting external force into an electrical signal.

Strain Gauge Load Cell

Single Point Load Cell

Shear Beam Load Cell

Parallel Beam Load Cell

Spoke Type Load Cell

S Type Load Cell

Weighbridge Load Cell

Micro Load Cells

Platform Scale Load Cell

Weight Scale Sensor

Conveyor Belt Load Cell

Elevator Door Sensor

Industrial Automation Sensor

Scale Load Cell

Forklift Scale Sensor

Shelf Weight Sensor

Strain Gauge Sensor

Load Cell Sensor

Load Cell Weighing Scale

Pressure Sensor

Water Level Pressure Sensor

Working principle of weighing sensor