Ton bag manufacturers will be 10kg weights, respectively placed on the weighing bucket two points. When the weighing display displays "positive difference", the sensor output should be adjusted in the direction of reduction; When the weighing display displays "negative difference", the sensor output should be adjusted in the direction of raising. For example, when the output of an L/C-1 sensor is reduced, a set of fine-tuned resistors associated with L/C-1 (with an original value of 10 ohms) are rotated to the left with the same amount of rotation. Rotate to the right (clockwise) the resistance value decreases and the display value increases (denoted as "plus "); Rotation to the left (counterclockwise) increases the resistance value and decreases the display value (denoted as "minus "). Note: When rotating the trimmer resistance, if the rotation amount of each group of two is inconsistent, it will make adjustment difficult, so the rotation amount of each group of trimmer resistance of the sensor should be as consistent as possible during adjustment. The absolute value of error of each bearing point is not more than 10g.
Make weighing adjustments according to the steps of weighing display controller manual calibration. During verification, from zero point to maximum point, the weights are increased in the order of 0kg, 40kg, 70kg, 90kg and 100kg respectively, and the errors are not more than 10g, 20g, 35g, 45g and 50g respectively; From the maximum to zero, the weights are decreased in the order of 100kg, 90kg, 70kg, 40kg and 0kg respectively, and the error is not greater than the respective tolerance; Repeatability verification was carried out at two quantitative points of 40kg and 100kg, and each weighing point was carried out three times, each error was not greater than their respective tolerance.
Quantitative packaging scale must be set more parameters, the following key parameters as an example is introduced as follows: a, weighing display controller quantitative value can be set to quantitative target value, such as 90kg. b, fast increase lead, slow increase lead. When the weight >(set value)-(fast increase advance), stop fast increase, turn to slow increase; When weight >(set value)-(slow advance), stop feeding.