One is to warm up in advance. Electronic balances usually need to be preheated 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 required preheating time, which can be based on the requirements in the balance manual Perform preheating and extend the preheating time if necessary (usually the lower the ambient temperature, the longer the preheating time). In fact, many users use the balance out of the box, so the measurement performance of the balance cannot be guaranteed. Therefore, the preheating of the electronic balance is the key to accuracy.

The second is environmental conditions. Environmental conditions are also an important factor affecting the measurement performance of electronic balances. If no special temperature limit is specified in the operating manual of the electronic balance, the balance should work normally under the temperature condition of -10℃~40℃; if the special temperature limit is specified, the balance should work under the specified temperature condition; The balance also has requirements for the humidity of the environment. For example, a level I balance requires a relative humidity not greater than 80%.

The third is the level state. Generally, high-precision electronic balances are equipped with a leveling device and a level. During use, the level status of the balance should be checked frequently. In fact, some users often neglect to check the level of the balance (electronic balances often cause uneven or unlevel four corners due to movement or other reasons). This is also the main reason for inaccurate balance data.

The fourth is to calibrate at any time. Some people think that after periodic verification, electronic balances are accurate within the validity period, and they often ignore the importance of calibration, or even do not perform calibration. As everyone knows, due to environmental conditions, human factors and other factors, electronic balances often have subtle changes in their measurement performance during use, which requires us to calibrate them in daily use. So, how should we calibrate? The electronic balance should be calibrated every day or before each use, and the frequency of calibration can be increased if necessary. For calibration weights, theoretically the higher the grade, the better. Generally, the weight error should be no more than 1/3 of the maximum allowable error of the balance, and it should be sent to the quality supervision department for regular inspection. If the error is found to exceed the standard, It must be sent to the quality supervision department for testing in time to avoid losses and entrap consumers.