Electromagnetic flowmeter dirty cleaning method

Case introduction

A brief analysis of cleaning methods for electromagnetic flowmeter contamination:

If the medium measured by the electromagnetic flowmeter is relatively dirty for a long time, scaling will occur on the power supply after the electromagnetic flowmeter has been working for a period of time. When the conductivity of the scaling material is different from the conductivity of the measured medium, measurement errors will occur. The adhesion of sludge and oil to electricity will also cause the instrument output to swing and drift. Therefore, in this case, we need to regularly maintain and clean the electromagnetic flowmeter. The electromagnetic flowmeter measurement is not affected by changes in fluid density, viscosity, temperature, pressure and conductivity; there are only flowing parts in the measurement tube, no pressure loss, and lower requirements for straight pipe sections; there are many choices for sensor linings and electrical materials; the converter adopts Novel excitation method, low power consumption, stable zero point and high accuracy. 1. For inorganic pollution, the electrode can be immersed in 0.1mol/L dilute hydrochloric acid for 30 minutes, washed with water, and then immersed in 3.5MOL/L potassium solution for 6 hours before use. 2. Soak in 4% hydrogen fluoride solution for 3 to 5 seconds, take out and rinse with distilled water, then soak in 0.1mol/L hydrochloric acid solution for several hours, rinse with distilled water, and calibrate. 3. If the platinum surface is seriously polluted and an oxide film is formed, you can use toothpaste to polish the platinum or gold surface, then clean it with water, and then immerse it in 3.5MOL/L potassium solution for 6 hours before use. 4. For organic oil and oil film pollution, you can use detergent to clean the platinum or gold surface, then wash it with water, and then immerse it in 3.5MOL/L potassium solution for 6 hours before use.