How to deal with the old and damaged weighing instrument
Nowadays, weighing instruments are generally in all normal application conditions, and which common faults are not easy to appear. But if you are not paying attention, the general laboratory instruments are not used in accordance with the application standards of electronic product weighing instruments, then electronic product weighing instruments will age over a long period of time. The specific manifestations of aging of electronic weighing instruments can be divided into three categories. One is the aging of the power plugs of all mechanical equipment at room temperature. The second is the aging of the overall high temperature mechanical equipment. The third is to simulate high-temperature full-band simulation load aging when energized. The aging of the entire mechanical power plug at room temperature is summarized as a complete SPWM, which is not too easy to cause damage. It is because the machinery and equipment have been used for a long time, and then the aging situation is justified. In addition, the high-temperature energization of all mechanical equipment simulates the aging of the load of all mechanical equipment at high temperature. These two conditions are all due to the current amount, and the geographical environment of the installation is excessively extreme. Therefore, it will cause the aging of the dashboard in the car. What should I do after the electronic product weighing instrument is aging? The following are the solutions that have been obtained: 1. The weighing instrument number is unstable; because the power capacitors C4 (CBB474) and N8 (4011) have poor contact or even damage due to moisture or other reasons, the number is unstable, and it can be Try to carry out repair welding or disassembly. 2. Self-check that the weighing instrument has not been reset; sometimes after resetting, the range of vibration is automatically changed, and part of it is reset to zero, so that the error caused by the unbalance of the lifting is very large, and it will continue to be The zero point after the Lifting Society gives up indicates that the information content is negative. 3. After the weighing instrument is turned on, the weighing fails. Under the condition that everything cannot be set normally, press the zero key to start and then set the detection range again. The detection range cannot be set again after the start, most of which can be distinguished as data The storage N7 (24C04) is destroyed, and the detection range is set again after disassembly, and must be calibrated again. Therefore, no matter what kind of electronic product is causing the aging of the instrument panel weighing instrument panel, we must carry out improvement and early prevention. Unless it is the in-vehicle instrument panel of the electronic product weighing instrument panel that has been in a state of significant ductility for a long time, it is useless. Therefore, the best way is for everyone to pay more attention to maintenance when using electronic scales and inspect the parts to ensure that all parts can be used normally, so as to ensure that the electronic scales are not prone to aging in the second half of the period. .
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