With the constant changes of the times, higher, newer and more requirements have been put forward for the use of meters in industrial production, such as faster speed, higher sensitivity, better stability, easier use, lower cost, and no Pollution, etc., in the measurement level instrument, the float level gauge is a simple and practical instrument, widely used.
Float level gauges often appear to be in good or bad condition during operation. When this type of phenomenon is encountered, most of the reasons are due to poor contact or imaginary welding. At this time, you can use the method of tapping hand pressure. To solve. This method chamber gently taps the board or part with a small rubber head or other striker to see if it can cause an error or stop failure. The so-called "hand pressure" is when the fault occurs, after the power is turned off, the plugged parts and the plug and the base are again pressed firmly by hand, and if the power supply is turned on, it will eliminate the fault. If it is found that when the cabinet is normal, and when it is not normal to beat again, it is best to re-insert all the connectors and try again. If it still fails, then only other methods are selected.
Secondly, observation methods can be used. The so-called observation method is to use only sight, smell and touch. In some cases, damaged components will discolor, blistering, or burnt spots; burned devices will produce some special odors; short-circuited chips will be hot; visible or unwelded with the naked eye Department.
The replacement method requires two identical float float level gauges or enough spare parts to replace a good spare part with the same component on the faulty machine to see if the fault is eliminated.
There is also a cooling method. Due to the relatively high ambient temperature in the summer and the long working hours, there will be some failures. When a similar failure occurs, how can we cool it? This phenomenon is due to the poor performance of individual ICs or components, and the high temperature characteristic parameters do not meet the requirements of the specifications. In order to find out the cause of the fault, it is possible to use the heating and cooling method. The so-called cooling, that is, in the event of a failure, the use of cotton fiber will be wiped in place of possible failure of alcohol, so that cooling, observe whether the failure is eliminated. The so-called warming is artificially raising the temperature of the environment, such as using a soldering iron near the point of doubt (note that the temperature must not rise too high to damage the normal device) to see if the fault appears.
These are some commonly used instrument fault detection methods, master one or two, will not be at a loss when problems are encountered. The generation of instruments has been innovative, but it has also provided a powerful impetus for the development of instrumentation technology and industry, and has become the basis for the further development of instrumentation, materials, knowledge and technology.
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