Correct use and maintenance of electronic balances

One is to warm up in advance. Electronic balances usually require preheating before use, and the preheating time of each balance is often different. Generally speaking, the higher the accuracy level of the balance, the longer the warming time required, and can be pre-prepared according to the requirements in the balance manual. Heat, if necessary, can extend the warm-up time (usually the lower the ambient temperature, the longer the warm-up time). In fact, many users are ready to use when using the balance, which does not guarantee the metering performance of the balance. Therefore, electronic balance warm-up is the focus of accuracy.
The second is environmental conditions. Environmental conditions are also an important factor affecting the metering performance of electronic balances. If no special temperature limit is specified in the operating instructions of the electronic balance, the balance shall work normally at temperatures between -10 ° C and 40 ° C; if a special temperature limit is specified, the balance shall be operated under the specified temperature conditions; The balance also has requirements for the humidity of the environment. For example, a level I balance requires a relative humidity of no more than 80%.
The third is the horizontal state. Generally, high-precision electronic balances are equipped with leveling devices and leveling devices. During use, the level of the balance should be checked frequently. In fact, some users often neglect the inspection of the level of the balance (the electronic balance often causes unevenness or unevenness due to movement or other reasons), which is also the main reason for the inaccurate data of the balance.
Fourth, calibration is always available. Some people think that after the periodical verification, the electronic balance is accurate within the validity period, and often ignores the importance of calibration, even without calibration. As everyone knows, in the use of electronic balances due to environmental conditions, human factors and other factors, the measurement performance often occurs before the fine calibration, if necessary, can increase the frequency of calibration. For the calibration weight, the higher the level, the better. Generally, the weight error should be no more than 1/3 of the maximum allowable error of the balance, and should be sent to the quality supervision department for regular inspection. If the error is found to exceed the standard, It is necessary to promptly send it to the quality supervision department for testing, so as to avoid the loss and the phenomenon of pitfalling consumers.

Maintenance and maintenance of electronic balances:
1. Place the balance on a stable work surface to avoid vibration, airflow and sunlight.
2. Adjust the level bubble to the middle position before use.
3. The electronic balance should be preheated according to the requirements of the manual.
4. When weighing volatile and corrosive items, place them in a closed container to avoid corrosion and damage to the electronic balance.
5, often self-school or regular external school electronic balance to ensure that it is in the best state.
6. If the electronic balance fails, it should be repaired in time, and it is not allowed to work with “illness”.
7. The operating balance should not be overloaded to avoid damage to the balance.
8. If you do not need to weigh the electronic balance for a long time, you should temporarily collect it as well.