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Plug-in electromagnetic flowmeter electromagnetic cleaning method introduction

1. For inorganic pollution, the electrode can be immersed in 0.1 mol/L dilute hydrochloric acid for 30 minutes, washed with pure water, and immersed in 3.5 MOL/L potassium chloride solution for 6 hours before use.

2, 4% hydrogen fluoride solution immersed for 3 ~ 5s, removed with distilled water, then soaked in 0.1mol / L hydrochloric acid solution for several hours, rinsed with distilled water, calibration

3. For organic oil and oil film contamination, clean the surface of platinum or gold with detergent, rinse with pure water, and immerse in 3.5MOL/L potassium chloride solution for 6 hours.

4. The surface of platinum is seriously polluted to form an oxide film. The surface of platinum or gold can be polished with toothpaste, then washed with pure water, and then immersed in 3.5MOL/L potassium chloride solution for 6 hours.

It is usually necessary to periodically check the electromagnetic flowmeter, check the environment around the electromagnetic flowmeter, remove the dirt, ensure that no water and other substances are inspected, check whether the wiring is good, check whether there is a new strong electromagnetic field device near the instrument or a new installed wire. meter. If the measuring medium is easy to contaminate the electrode or precipitate or scale in the measuring tube wall, it should be regularly cleaned and cleaned.

The above is an introduction to the electromagnetic cleaning method of the plug-in electromagnetic flowmeter, hoping to help everyone.

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