Video measuring instrument About the inspection and repair method of measuring instruments?-Dongguan Comani Precision Optical Measurement Technology Co., Ltd.

Video measuring instrument About the inspection and repair method of measuring instruments?

信息来源于：互联网发布于：2022-04-15

Video measuring instrument About the inspection and repair method of measuring instruments? Instruments and meters are used in various production enterprises, and are more widely used in electronic production enterprises. Many electronic products must be tested by instruments before they leave the factory, similar to the detection of electronic components by instruments such as image measuring instruments. Instrument detection can reduce the probability of scrap and defective products, and can improve the quality of enterprise products. However, the detection of instrumentation is also very important. Taking electronics companies as an example, several common methods of instrumentation maintenance are briefly described:

1. Observation method

The first commonly used method is to observe the instrument, using vision, smell, touch, hearing, etc., to see if the instrument has a burnt smell, whether there are spots, and whether there is noise. Generally, the burnt instrument will have an unpleasant smell, which is easy to smell. If the chip is short-circuited, it will feel hot. The broken place can be seen with the eyes. Sometimes you can hear the abnormal noise of the machine. These may all be problems with the instrument.

2. Restart method

If the operation of the instrument is in poor contact or temporarily fails, you can turn off the instrument, re-plug the power switch, etc., or tap the faulty part of the instrument, and then restart it. After restarting, check whether the instrument can run normally. If yes, it means that some parts of the instrument are in poor contact or the power supply is in poor contact.

3. Temperature regulation method

Due to seasonal reasons, the temperature is sometimes too high or too low, which may affect the instrument. If the instrument is turned off after a failure, restarted after a period of time, and then fails again after working normally for a period of time. If this phenomenon occurs repeatedly, it may be that a certain part of the instrument cannot be used normally due to the increase in temperature during operation. It can be cooled down with absolute alcohol. For the temperature is too low, the indoor working environment temperature can be adjusted.

4. Exclusion method

The method of elimination is that when the instrument fails, you can unplug some internal plug-in boards or components. If the instrument returns to normal after a certain component is unplugged, it means that the unplugged part has a problem and needs to be replaced.

5. Replacement method

If you know the faulty component of the instrument, or if you are not sure whether a component is faulty, you can replace the same new component to see if the fault is eliminated.

6. Contrast method

If you have common necessary equipment such as multimeters, oscilloscopes, etc., and you have two instruments of the same model, you can do some comparative testing. Such as waveform comparison, voltage comparison, current comparison, output result comparison and so on. Run the normal instrument and the instrument to be tested under the same conditions, and then measure these comparative data. If there are differences in some places, it is very likely that the problem occurs here.

7. Fault flow chart method

According to the fault flow chart to eliminate and narrow the fault scope one by one, it is not necessary to use instruments of the same model to perform detection and comparison under the same conditions, and the cause of the fault can be checked through methods such as signal comparison and component exchange, which is more convenient and faster than the comparison method.

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