Calibration and verification steps for load cells

• time：2023-02-08 12:59:14
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Calibration and verification steps for load cells

(1) Place the bench frame on a stable and inelastic foundation. The plane on which the bench frame places the load cell should be basically horizontal.

(2) Use the backing plate to fix the load cell on the bench frame.

(3) Put on the hanging frame and make the pressure head of the hanging frame press against the pressure head of the sensor.

(4) Hang the weight holder on the weight rack.

(5) Turn on the bridge power supply of the load cell, and connect the output to a high-precision millivolt meter (the accuracy should be higher than 70% of the sensor's nominal accuracy) (the current output value can also be measured if necessary).

(6) According to the measuring range of the sensor and the number of points to be measured, load (weight) and unload the weight holder step by step, and record the sensor output data. In this way, the performance indicators such as zero output, linear accuracy, repeatability accuracy and hysteresis of the sensor can be detected, and whether the sensor is normal and good or bad can be determined naturally.

For the detection of the tension load cell, there is no need to use a hanging weight rack. Hang the sensor directly on the hook on the back of the bench frame's bearing surface, and connect it to the weight holder below. The remaining steps are the same as the above-mentioned pressure sensor measurement method.

(1) The device is simple, takes up little space, and can be made by oneself.

(2) Because the standard weight is used as the load, the direct loading measurement method is adopted, and it has an automatic centering function, so the measurement accuracy is good.

(3) It can measure either single point or multiple points; it can detect loading data or unloading data, and it can conduct long-term on-load simulation tests. Complete functions, flexible operation, simple and convenient.

(4) The load cell device is most suitable for detection and calibration of small-scale load cells, especially sensors with a measurement upper limit of 200kg.