What are the common problems with electronic balances?
1. 0 point drift of the electronic balance, drifting up and down
(1) The environment in which the balance is placed is too bad
Environmental factors include: vibration, airflow, temperature, external magnetic field, the above environment must be improved, the windscreen of the weighing room is closed, and the balance can work normally.
(2) The parameter settings in the balance menu are not good.
After loading the menu, use the “RESET†function to exit the menu correctly and return to the factory settings.
(3) The magnetic sensor is not in thermal equilibrium
In the magnetic sensor, it takes a period of time for the magnetic copper to reach thermal equilibrium. At this time, the single-direction drift is normal, and after a certain period of warm-up, it will stabilize.
2. There is no display after the electronic balance is turned on.
(1) There is no 220V voltage on the power socket
Connect AC power, balance working voltage working range 184-264V
(2) AC adapter power plug is not plugged in
Re-insert the power plug firmly into the AC adapter
(3) The wrong choice of the AC adapter
Choose a 220V AC adapter suitable for our work
(4) AC adapter burned down
Replace the 220V AC adapter
3, electronic balance can not be internal school
(1) The calibration function in the menu is set to other states that are not calibrated such as "LEST INT" "URRILAL"
Improve the calibration function in the menu to “FACT†or “CAL INTâ€, and then exit the menu correctly before executing the internal calibration.
4. The electronic balance shows "Abort" in the calibration or detection interruption.
(1) The environment in which the balance is placed is too bad
Improve the environment
(2) The parameter settings in the balance menu are not good.
After loading the menu, use the “RESET†function to exit the menu correctly and return to the factory settings.
(3) The body temperature of the hand is left in the weighing room
Minimize this human factor
(4) The temperature of the weighed object does not reach isothermal with the balance
Place the sample isothermally next to the balance.
(5) The sample has characteristics such as water absorption, water repellency, static electricity, magnetic properties, and the like.
Refer to “METTLER TOLEDO Balances for Correct Weighing/Electronic Analytical Balances to overcome the above effects for proper weighing and proper use of microbalancesâ€
5, the weighing result of the electronic balance is obviously not allowed
(1) There is no peeling back to zero.
After peeling back to zero, weigh it again.
(2) The balance is not calibrated or is calibrated with the wrong external weight
The correct calibration should be performed before weighing and weighed.
(3) The power supply exceeds the correct working voltage range. Electronic analytical balance
Take measures to stabilize the power supply voltage.
6. The weighing result of the electronic balance is unstable, and the stable indicator light does not disappear.
(1) The environment in which the balance is placed is too bad
Improve the environment
(2) The parameter settings in the balance menu are not good.
After loading the menu, use the “RESET†function to exit the menu correctly and return to the factory settings.
(3) The body temperature of the hand is left in the weighing room
Minimize this human factor
(4) The temperature of the weighed object does not reach isothermal with the balance
Place the sample isothermally next to the balance.
(5) The sample has characteristics such as water absorption, water repellency, static electricity, magnetic properties, and the like.
7, the weighing chamber of the electronic balance should not put desiccant
1. The water absorption and release of the desiccant form airflow in different directions, causing changes in the buoyancy of the air, resulting in unstable weighing. The desiccant in the weighing chamber should be removed to maintain a stable weighing environment.
8. The electronic balance appears on the display after normal startup: 000000 flashing
(1) The electronic balance is not equipped with a weighing pan
After the power is cut off, first install the correct weighing plate, then turn on the balance.
(2)
Use the correct weighing plate that meets the balance
(3) The scale of the balance touches the windshield
Due to improper installation, please find out the reason for the collision and re-install correctly.
(4) Sensor damage
Damage to the instrument IC due to excessive voltage or current
Weighing overload or collision damage to the balance when placing the instrument
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