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What should be paid attention to when the radar level gauge is overhauled in a chemical plant?

Author:    Source:    Date: 2021-05-13 16:47:21
Question: Some time ago, I bought a smart radar level gauge online. Because our industry is quite special, especially in chemical plants, what should be paid attention to when the radar level gauge needs to be repaired?
Answer: Because it is a chemical industry, it is prone to inflammable and explosive phenomena, so you must not repair it when the power is available. The best way is to cut off the power before repairing. Now, the old workers in the front line of the chemical plant are invited to explain the maintenance precautions of the radar level gauge for the majority of users.

Maintenance precautions for old workers in chemical plants:


Cut off the power: When we detect the radar level timing, we should not forget to use electricity to measure, otherwise our measurement will be meaningless. In the field measurement, it is mainly to see whether the current output of the radar level gauge is 22mA
Signal short circuit: When using logic pens or display waves to detect the radar level gauge signal, we need to touch different probes to the probe of the radar level gauge at the same time to see if there is a short circuit discharge of the filter capacitor: check the radar level When measuring the filter capacitor, you need to short-circuit the positive and negative electrodes of the electrolytic capacitor, but we cannot discharge it, which will cause the measurement and the core wire to burn out

Moisture-proof: If the radar level gauge is used in a humid environment, it is easy to cause the radar level gauge to malfunction. We need to check whether the printed circuit of the radar level gauge is unblocked one by one

Insulation detection: When detecting the internal circuit of the radar level gauge, if the surface of the component is coated with insulating varnish, it can be welded on the pen of the multimeter with ordinary hand stitches for easy detection

Do not unplug: Do not unplug the control board or the plug of the radar level gauge when detecting the radar level timing. This will cause the counterattack voltage of the radar level gauge to be too high and damage the control board and plug of the radar level gauge.


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