Electronic Scale Maintenance Method Electronic Scale Maintenance Method 1, no display: whether the battery in the machine is under-voltage and causes automatic shutdown (with built-in battery model).
Whether the AC power supply voltage is consistent with the voltage marked on the product, and whether the fuse is blown (using AC motor).
Repair methods of electronic scales II. Electronic scales can't be charged: Is the AC power supply voltage consistent with the voltage marked on the product? Is the fuse blown (using AC model)?
Repair method of electronic scale 3. Digital jitter: whether the sensor connection is good, whether the sensor and display are damp, whether the sensitivity setting is too small, whether the AD conversion rate is set too high, whether there is interference such as vibration and wind blowing, and whether the scale is in contact with foreign objects.
Repair method of electronic scale 4. Linearity difference: whether the sensor protection device works, whether it has been linearly corrected (using linear correction model), whether the weight used for linear correction is correct (using linear correction model), and whether the sensor is overloaded.
Repair method of electronic scale 5. Unable to print: whether the printer type is set correctly, whether the reading is stable, whether the stability sign is on, whether the printer is connected correctly, whether the printer is powered on, and whether the printer is connected (only applicable to 24-pin printers).
Repair methods of electronic scales. Cannot accumulate: whether it is zero before accumulation, and whether it is stable when pressing the accumulation key.
Repair methods of electronic scales. Unable to communicate through serial port: baud rate and sending mode are set correctly, RS-232C cable is in good contact, and RS-232C cable is too long.
Maintenance methods of electronic scales 8. Do not return to zero when starting: whether the automatic return to zero range is set too small, and whether there is anything on the scale.
Repair method of electronic scale 9. Invalid manual zero adjustment: whether the manual zero adjustment range is set too small and whether the current reading is stable.
Repair method of electronic scale 10, unable to weigh: whether the sensor connecting line is firm and calibrated (models with linear correction must be calibrated first).
Maintenance method of electronic scale 1 1, whether to use super user password to enter (software protection mode) and whether to correct jumper short circuit (lead protection mode).
Electronic scale 12, repair methods that do not return to zero after unloading: whether the zero tracking setting is too small, and whether the weighing platform touches foreign objects.
Electronic scale repair method 13, backlight is invalid: whether the battery is insufficient and whether the current weight is less than the minimum weight.
Electronic scale repair method 14, invalid checkweighing: whether the current weight is less than the minimum weight and whether the checkweighing call is turned on.
Maintenance method of electronic scale 15. Boot beep: calibration, sensor connection and checkweighing.
The method to judge the quality of the weighing sensor of the electronic scale is 1. First, check whether the resistance value of the load cell has changed; Generally speaking, if it exceeds the nominal resistance by more than 6 ohms, it can be concluded that it is broken.
2. Check whether the excitation voltage is enough, especially in long-distance transmission, the voltage loss is very serious, and it is best to use a 6-core sensor.
3. Check whether there is strong electricity around.
4. Measure the resistance of each wire to the ground. If the resistance is less than 500M, it can be judged as damage.
5. Check the appearance of the sensor for damage, deformation and corrosion at a glance.
The correct placement of electronic scales is the first step of accurate measurement of electronic scales. The electronic scale should be placed on a horizontal and stable table, and articles such as paper should not be placed under the scale. Using them on an inclined or vibrating table will affect the reading of the electronic scale, so whether the electronic scale is placed horizontally is an important factor affecting the accuracy.
Before using the electronic scale to weigh items, if the mercury bubble on the panel of the electronic scale is found to be off the center, it means that the electronic scale is not in a horizontal state. In this case, the levelness of the disk surface needs to be adjusted first. The height of the four feet of the electronic scale can be adjusted by rotation. By manually adjusting the feet, the mercury bubbles on the panel can be kept in the middle position, so that the levelness of the weighing pan can be ensured, thus ensuring the accuracy of weighing.