(1) Preheating in advance.
Electronic balances usually require preheating before use, and the warm-up time of each balance is often different. Generally speaking, the higher the accuracy level of the balance, the longer the warm-up time required, according to the requirements in the balance instruction manual. Preheating, 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.
(2) 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%.
(3) Horizontal status.
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.
(4) Calibration at any time.
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. Shanghai Wuxiang Instrument Co., Ltd. makes the following requirements. Due to changes in environmental conditions and human factors, electronic balances often undergo subtle changes in measurement performance, which requires us to calibrate them in daily use. So, how do we calibrate? The electronic balance should be calibrated daily or before each use, and the frequency of calibration can be increased if necessary. 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.
Electronic balances usually require preheating before use, and the warm-up time of each balance is often different. Generally speaking, the higher the accuracy level of the balance, the longer the warm-up time required, according to the requirements in the balance instruction manual. Preheating, 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.
(2) 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%.
(3) Horizontal status.
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.
(4) Calibration at any time.
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. Shanghai Wuxiang Instrument Co., Ltd. makes the following requirements. Due to changes in environmental conditions and human factors, electronic balances often undergo subtle changes in measurement performance, which requires us to calibrate them in daily use. So, how do we calibrate? The electronic balance should be calibrated daily or before each use, and the frequency of calibration can be increased if necessary. 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.
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