每个月要清洗一次。 1) Clean once a month.
2) When cleaning, first open the screw cap of the iron pipe of the input type water level meter, and carefully take out the level gauge; then remove the debris (such as waterweed, plankton, etc.) attached to the level gauge.
3) When cleaning the pressure gauge hole of the water level gauge, you can use trichloroethylene or alcohol to inject the pressure gauge hole to a half of its height and soak it for about 5 minutes, then shake it slightly and repeat it many times until it is cleaned. Do not use any appliance to clean the pressure-inducing hole to avoid damaging the sensitive core pressure-sensitive diaphragm.
4) When cleaning the pressure interface and pressure hole of the transmitter, avoid using excessively hard brushes or metal tools to avoid damaging the sensitive core and pressure interface threads.
5) After cleaning, slowly put the liquid level gauge back into the iron pipe, feel that the lower part of the iron pipe has been placed, and install the screw cap back to the original place.
After removing and cleaning and reinstalling, the installation depth will change to a certain extent, and the secondary water meter's detection value must be corrected again in accordance with the water level gauge at the same water level of the sluice to ensure the correctness of the sampling data.