Automatic calibration of portable electronic truck scale before installation and use

After the portable electronic vehicle scale is set to zero, load the weight first (the number is not limited, but it is better to approach the full scale), then enter the calibration state (display “Please input the setting option”), press [3] and enter the actual value of the weight. (If the measuring unit is “ton”, the input unit is “kg”. If the measuring unit is “kg”, the input unit is “g”, that is, the input unit is 1000 times smaller than the measuring unit, regardless of the indexing and decimal point position). Press [Date] again, the meter will automatically calculate the calibration factor and analog gain and save. After the correction, the instrument zero point is not affected and there is no need to reset it.

Example: The 30-ton electronic truck scale is calibrated with a 10-ton weight. The operation steps are as follows (assuming the parameters have been set):

(1) The empty scale is set to zero (“0” is displayed).

(2) Load 8 tons of weight, the meter displays the value before calibration, such as "7670kg"

(3) Enter the calibration state, display “Please enter the setting options”, and then press the [3] key to display no content.

(4) Enter “8000” (8000kg), press [Date], wait a moment and the weight will be displayed.

(5) After the calibration is completed, the measurement performance is checked according to the verification procedure.

(6) After debugging, press [General Clear] twice to clear the useless data that may be stored.

Sometimes the alarm will display the alarm message "Set option error", indicating that the calibration range is out of bounds, please check the following:

1When the empty scale is displayed, is it 0? Note that the display should be 0 before the weight is added. If you adjust the instrument analog gain to change the instrument zero position, you should reset it to zero (shutdown and reopen). Whether there is weight display after loading the weight, if the weight is 0, please check the sensor signal and instrument parameters.

2 Weight input is correct? For 30t electronic scale calibration, the range unit is t, so the weight of the weight should be input in “kg”. If the weight is 20t, the input should be “20000” instead of “20”.

3 Is the sensor connected to the signal line correctly? If the connection is wrong, the display weight and the actual weight of the weight must be greatly different when the weight is loaded.