Matters needing attention in the use of packaging scale instruments

1. Packing scale instrument installation: Generally, the instrument should be placed in a clean, dry, ventilated and suitable temperature environment. The position of the instrument should be fixed and should not be moved frequently, otherwise the inner lead of the signal cable plug may fall off and cause failure.

2. Power supply:Packaging scale meterMainly use 220 volt AC power supply, the allowable voltage range is generally 187-242 volts In occasions with large fluctuations, a voltage stabilizer with good performance (such as a continuous wave AC parameter voltage stabilizer) should be equipped to ensure the normal use of the instrument. Do not use the same power supply with strong interference sources (such as motors, electric bells, fluorescent lamps). In order to avoid the unstable display value of the instrument, some instruments (such as HAWK instrument, etc.) are used for AC\/DC2. When using dry batteries, pay attention to the leakage of battery liquid, which may damage the instrument. When the battery is not powered for a long time the battery should be removed.

3. Grounding: The packaging scale instrument should use an independent and good grounding wire (the grounding resistance grounding wire has dual functions: it not only protects the personal safety of the operator, but also has an important anti-interference function, which can ensure the stable operation of the instrument. The grounding wire is connected Connect to the power socket of the instrument. If the ground wire of the instrument is connected to the public high-voltage protective ground wire, it may cause power disturbance to the instrument and cause fluctuations in the display value of the instrument. Regularly check whether the ground connection point is in good contact. Oxidation, corrosion and other conditions at each connection point will render the instrument practically ineffective.

4. Sunscreen: Avoid direct sunlight on the black casing of the instrument, otherwise the working environment of the instrument may exceed the rated temperature range and be damaged.

5. Waterproof: Generally speaking, although the humidity of the working environment of the instrument can reach 95%, it is stipulated that condensation will not occur. Except for the special stainless steel casing instrument with waterproof function

6. Anti-corrosion: Corrosive substances cannot penetrate into the inside of the instrument, otherwise it will corrode the components on the circuit board and the circuit board itself, and the instrument may be scrapped over time. Even if the instrument with anti-corrosion function is not tightly sealed, it will has the same effect.

7. Lightning protection: The electronic weighing apparatus is a weak current system, which is vulnerable to lightning strikes and damages components. Lightning enters the instrument mainly from 2 aspects: from the power line and through the signal line from the weighing platform. In normal weather, the operator only needs to operate the power supply Switch, but in the case of short-distance lightning strikes, the instrument power plug and scale signal cable plug must be unplugged. It is best to take lightning protection measures, such as adding surge protection devices to the instrument power circuit.

8. Strong electricity protection: If the live wire of the power supply above 220v is accidentally connected to the electronic scale, or the electronic scale is used as a ground wire, the electric welding on the electronic scale may damage the instrument.

9. Cleaning: In an industrial environment, there will be dust accumulation or contamination on the casing of the instrument, and it must be cleaned with a damp cloth frequently when the power is turned off. However, care should be taken not to wipe the display window with solvents such as alcohol, which will reduce the light transmission performance and cause Display is not clear.

10. Anti-static: Once the meter of the packaging scale is damaged, it must be repaired. In order to speed up the round-trip transmission, some units like to remove the printed circuit board of the meter and mail it by express, which causes anti-static problems. When picking up the printed circuit board, hold the The 4 corners of the circuit board, do not touch the place with the pins of the integrated block with your hands. Because the electrostatic shock can easily destroy the integrated circuit block. After removing the printed circuit board, it should be placed in a shielding bag immediately, and it can be used without a shielding bag. Ordinary newspaper wrapping can damage the circuit board if it is conveniently placed on a highly insulated tabletop. When receiving a repaired printed circuit board and the meter needs to be reinstalled, you should also pay attention to anti-static.