Precautions for daily use of electronic balance:

The inaccurate measurement data of electronic balance often occur, mostly due to improper operation. In order to improve the accuracy and prolong the service life of the electronic balance, the following points can be used for reference:

1、 Preheat in advance. The electronic balance usually needs 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 preheating time is required. The preheating can be carried out according to the requirements in the balance operation manual. If necessary, the preheating time can be extended (generally, the lower the ambient temperature, the longer the preheating time). In fact, many users use the balance immediately, which can not guarantee the metering performance of the balance. Therefore, the preheating of electronic balance is the key point related to accuracy.

2、 Horizontal state. Generally, high-precision electronic balance is equipped with level adjustment device and level gauge. In use, the horizontal state of the balance should be checked frequently. In fact, some users often neglect to check the horizontal state of the balance (the four corners of the electronic balance are often uneven or uneven due to movement or other reasons), which is also the main reason for the inaccurate balance data.

3、 Calibrate at any time. Some people think that after periodic verification, the electronic balance is accurate within the validity period, and the importance of calibration is often ignored or even not calibrated. As everyone knows, the measurement performance of electronic balance often changes slightly due to changes in environmental conditions, human factors and other factors, which requires us to calibrate it in daily use. So how do we calibrate? The electronic balance shall be calibrated every day or before each use, and the calibration frequency can be increased if necessary. Theoretically, the higher the grade, the better the weight used for calibration. Generally, the weight error should not be greater 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 exceeds the standard, it should be sent to the quality supervision department for inspection in time to avoid losses and entrapment of consumers.

If there is no important factor in the operating temperature of the electronic balance, the electronic balance shall operate at - 40 ℃; If a special temperature limit is specified, the balance shall work under the specified temperature conditions; The electronic balance also has requirements for the humidity of the environment. For example, the relative humidity of class I balance is required to be no more than 80%.

For more knowledge about the use of electronic balance, you can carefully read the operation manual of each balance.