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. According to 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 immediately, so the measurement performance of the balance cannot be guaranteed. Therefore, electronic balance preheating is the key point related to accuracy.
Environmental conditions are also an important factor affecting the measurement performance of electronic balances. If no special temperature limit is specified in the operation manual of the electronic balance, the balance should work normally under the temperature condition of -10°C~40°C; if a special temperature limit is specified, the balance should work under the specified temperature condition; The balance also has requirements on the humidity of the environment. For example, the level I balance requires that the relative humidity is not greater than 80%.
Generally, high-precision electronic balances are equipped with a leveling device and a level. During use, the leveling state of the balance should be checked frequently. In fact, some users often neglect to check the level state of the balance (the four corners of the balance scale are often uneven or not level due to movement or other reasons). This is also the main reason for the inaccurate balance data.
Some people think that after periodic verification, the electronic balance is accurate within the validity period, but the importance of calibration is often overlooked, or even not calibrated. As everyone knows, due to changes in environmental conditions and human factors during use, the measurement performance of electronic balances often changes slightly, which requires us to calibrate them in daily use. So, how do we calibrate it?
The electronic balance should be calibrated every day or before each use, and the frequency of calibration can be increased if necessary. Theoretically, the higher the level of the weight used for calibration, the better. Generally, the error of the weight should not be greater 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 should be sent to the quality supervision department for testing in time to avoid losses and the phenomenon of entrapping consumers.
A balance that uses electromagnetic force to balance the gravity of an object is called an electronic balance. It is characterized by accurate and reliable weighing, fast and clear display, automatic detection system, simple automatic calibration device, and overload protection device. High precision load cell with overload protection, automatic detection, automatic zero tracking and large LCD display with backlight. Widely used in industrial production, food safety, medical and health, laboratories and other fields.