The load cell of an electronic scale is actually a device that converts a mass signal into a measurable electrical signal output. When using a sensor, you should first consider the actual working environment where the sensor is located, which is very important for the correct selection of load cells. 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 instrument. sex. There are mainly S type, cantilever type, spoke type, plate ring type, bellows type, bridge type, column type, and so on.

    According to the conversion method, the load cell is divided into 8 types: a photoelectric type, a hydraulic type, an electromagnetic force type, a capacitive type, a magnetic pole change type, a vibration type, a gyro ceremony, resistance strain type, etc. The resistance strain type is the most widely used.

    The photoelectric type includes the grating type and encoder type. The grating sensor converts the angular displacement into a photoelectric signal by using the moire fringes formed by the grating. There are two gratings, one is a fixed grating and the other is a moving grating mounted on the dial shaft. The measured object added on the load-bearing platform rotates the dial axis through the force transmission lever system, which drives the moving grating to rotate so that the moire fringes also move. Using the photocell, conversion circuit, and display instrument, the number of moiré fringes that have been moved can be calculated, and the rotation angle of the grating can be measured, so as to determine and read the quality of the object to be measured.