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The selection of liquid level gauge is different for different media in enterprises

Time: 2013-06-18 15:49:42 source: Author:

If chemical enterprises can not choose the appropriate level gauge, it will damage the equipment, or even cause accidents or even disasters. About 60% of the damage of chemical equipment is caused by corrosion, so attention should be paid to the selection of chemical equipment Liquid level meter The selection of.

Brine

The corrosion rate of ordinary steel in sodium chloride solution, sea water and salt water is not too high, so it is generally necessary to adopt coating protection; all kinds of stainless steel also have very low uniform corrosion rate, but local corrosion may be caused by chloride ion, and 316 stainless steel is generally better.

Nitric acid

Most metals are rapidly corroded in nitric acid. Stainless steel is the most widely used nitric acid resistant material, which has good corrosion resistance to all concentrations of nitric acid at room temperature.

Sulfuric acid

Sulfuric acid is an important industrial raw material with a wide range of uses. Sulfuric acid with different concentration and temperature has great difference on the corrosion of the material, and the fluorine lined pump valve is the best choice.

Alkali

Iron and steel are widely used in sodium hydroxide solution below 80 ℃ and 30% concentration. Many petrochemical plants still use ordinary steel at 100 ℃ and below 75%. Although corrosion increases, magnetic flap level gauge is the best choice.