How to choose the right material of electromagnetic flowmeter, electromagnetic flowmeter as a common flow measurement dashboard, the selection of its material is a very critical factor.Because in the electromagnetic flowmeter, the part that touches with the medium has only the electric level and the inside of the measuring tube, therefore according to the characteristic of different medium, must choose the appropriate electric level and lining material.

I. selection of relevant electrical grade materials general electrical grade materials can be divided into the following categories:

1. Stainless steel (0Cr18Ni12Mo2Ti).Suitable for nitric acid, sulfuric acid less than 5% at room temperature, boiling phosphoric acid, formic acid, alkali solution, must be pressure of sulfurous acid, sea water, acetic acid.

2. Haselloy B and haselloy C.Can be used for sea water, salt water.

3, titanium.Suitable for sea water, various nitrogen compounds and secondary sulfuric acid, oxidizing acid (including fuming nitric acid), organic acid, alkali, etc.

4, tantalum.Other organic chemical media, including boiling point sulfuric acid, nitric acid and sulfuric acid < 175℃, can be used in addition to fuming sulfuric acid and alkali.

5, platinum.Can be used for a variety of acids, alkali, salt, but does not contain royal water.

Two, about the lining material selection of electromagnetic flowmeter another key material selection is: how to accurately select lining materials.It is important to note that lining materials should be selected according to the adhesion, abrasion and temperature of the medium under test.

1. Rubber.With good elasticity, high tensile force, good wear resistance, resistance to general weak acid and alkaline erosion, can measure water, sewage, mud and pulp.

2. Polyurethane.It has good wear resistance, poor acid and alkali resistance, and can measure the coal slurry, mud and pulp with strong neutral wear.

3. Polytetrafluoroethylene.Resistance to boiling sulfuric acid, sulfuric acid, nitric acid, aqua, concentrated alkali and various organic solvents, good wear resistance, poor adhesion.

Above is the relevant electromagnetic flowmeter material selection, not the same medium has not the same characteristics, not necessarily to choose expensive, choose the right is economic and durable.

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