Use and Maintenance Precautions about Electronic Weighing Scale 

The weighing instrument used in the electronic weighing scale belongs to the category of precision instrumentation, and it is best to operate by the specifications above when using and maintaining it, otherwise it may cause damage to the electronic weighing scale or shorten its service life.

Use and maintenance precautions about the electronic weighing scale 

1. Installation: Generally should choose a clean, dry, ventilated, temperature appropriate environment to place the instrument. Instrument position should be fixed, do not often move, otherwise, it may lead to signal cable plug internal lead off and produce failure.

2. Power supply: Most of the weighing instruments (such as 8142, 8530 and other series) use 220 volt AC power supply, and the allowable voltage variation range is generally 187 volts - 242 volts. After changing the power line, remember to measure the voltage to meet the requirements before energizing the instrument. If the 380 volt power supply is mistakenly passed to the instrument it may cause damage. The instrument should be equipped with a good performance voltage regulator (such as CW type AC parameter regulator) to ensure the normal use of the instrument when the power supply voltage fluctuates. Do not use the same power outlet with strong interference sources (such as electric motors, electric bells, fluorescent lights) to avoid unstable meter display values. Some meters (such as HAWK meter, etc.) for AC and DC dual-use. When using the dry battery, you should pay attention to the battery leakage will damage the meter. When not using battery power for a long time, the battery should be removed.

3. Grounding: The weighing instrument should be connected to an independent and good grounding wire (grounding resistance <4 ohms, grounding lead should be as short as possible). The ground wire has a dual role: it has both the protection of the operator's personal safety, but also has an important anti-interference role, to ensure that the instrument works stably, the ground wire is connected to the instrument power socket, if the instrument ground wire is connected to the common strong power protection ground line, this may produce power interference to the instrument, so that the instrument display value fluctuations. The ground connection point should be checked regularly for good contact. Because after a long time, the connection points produce oxidation, rust and other conditions will make the instrument actually does not work.

4. Sun protection: direct sunlight should be avoided on the black casing of the instrument, otherwise it may cause damage to the working environment of the instrument beyond the rated temperature range.

5. Waterproof: In general, although the humidity of the working environment of the instrument can reach 95%, it is stipulated that no condensation can be produced. Special stainless steel housing instrument with waterproof function is excluded.

6. Anti-corrosion: Corrosive substances can not penetrate into the interior of the instrument, otherwise they will corrode the devices on the circuit board and the circuit board itself, which may cause the instrument to be scrapped after a long time. Even if the instrument with anti-corrosion function, if the closure is not tight, it will have the same result.

7. Lightning strike: electronic weighing scale belongs to the weak electrical system, vulnerable to lightning attacks and damage to components. Lightning mainly from two aspects of the instrument: by the power line and by the scale through the signal cable. In normal weather, the operator can simply manipulate the power switch, but in the case of a possible close lightning strike, you must unplug the instrument power plug and scale signal cable plug. It is best to take measures against lightning strikes, such as in the instrument power circuit to increase the anti-surge protector.

8. Anti-strength: 220 volts or more power fire line accidentally hit the scale platform or use the scale platform for ground, welding operations on the scale platform are likely to damage the instrument.

Conclusion

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