When we select the load cell, the sensor's instructions will have a lot of parameters to explain the performance of the sensor, which is anti-interference, temperature drift, and accuracy.
One of the parameters is called sensitivity, which is generally labeled as follows: sensitivity, 2 ± 0.002 (mv / v) This is an important performance indicator of the transmitter, of course, other indicators are also important, but we need to use the sensor This indicator will directly affect the use. In fact, it means that the sensor is subjected to the rated tensile force (if the full-scale is 200KG, its rated tensile force is 200KG), in the case that the excitation voltage (also called the bridge voltage, the input voltage) is 1v, Its two outputs have a 2mv pressure change. Of course, the actual excitation voltage will be greater than 1v, generally 10v to 12v. If a 200KG sensor has a sensitivity of 2±0.002 (mv/v) and its excitation voltage is 10v, then the pressure change at the output is 20mv under 200KG pull. When choosing a sensor, it is often three or four simultaneous use in parallel. Each sensor must be required to have the same sensitivity to be used at the same time. If the difference is not the same, the entire scale will be inaccurate. Putting one thing in different places on the same scale will show different weights. If you replace the damaged sensor, you should also find the sensor with the same sensitivity and range. Other indicators can be ignored. As long as the two indicators are the same, the sensors from different manufacturers can be used together.