First measure the resistance value of the input and output of the lower sensor, if there is a certificate of this sensor, compare it with the resistance indicated in the certificate, if the measured value is beyond the standard range, it means that there is a problem with this sensor. At present, there are two commonly used sensor resistance values:
One is low-impedance, the input is: 400 20, the output is: 350 5 The other is high-impedance, the input is: 800 20&0mega;, the output is: 700&0mega;5. In addition, you can also measure the output signal of the sensor, use the MV voltage level of the digital multimeter, add 10VDC to the input end of the sensor, and then measure the output voltage of the sensor, this voltage value = 10VX sensor sensitivity x the force value of the sensor Sensor range value;If there is a significant difference between the measured value and the calculated value, the sensor is damaged.
Load cellsThe operating voltage is exc+, and exc- must be stable (sensor operating voltage).
2.The range and sensitivity of each set of sensors should be different.
3.When there are 3 2t pots, the total full star range of the pot is 6t
4.When the sensitivity of each sensor is 2At 0mV V, the total junction box output is also 20mv/v
5.When the weighing of various positions on the weighing platform is not accurate, the weighing needs to be adjusted;Place the calibrated weights in the four corners of the platform so that the weight at each corner is equal and equal to the value of the weight.