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Selection of Electrode – Electromagnetic Flow Meter

1.   SS316: Apply to industrial water, domestic water, polluted water, etc. with weak erosion, applied in petroleum chemical industry, steel and iron, etc. and fields in government and environmental protection


2.   Hastelloy B: Good performance of resisting erosion to hydrochloric acid with all degrees of density below the boiling point; resisting sulfuric acid, phosphoric acid, hydrofluoric acid, organic acid, etc. non- chlorine acid, alkali, erosion of non-oxidized salty fluid.


3. Hastelloy C: Resisting non-oxidized acid, such as nitric acid, nitration mixture, or the erosion of the mixture of chromic acid and sulfuric acid; resisting oxidized salt such as Fe , Cu or the erosion of other oxidizers, such as the erosion of higher than normal temperature hypochlorite liquor and the sea water.


4. Resisting erosion of sea water, all kinds of chloride and hypochlorite, oxidized acids (including Fuming sulfuric acid), organic acid, alkali; not resisting the erosion of purer reducing acids( such as sulfuric acid, hydrochloric acid); if oxidizer exists in acids (such as nitric acid, Fe+++. Cu++) the erosion will reduce greatly.


5. Good performance of resisting erosion, similar to glass; Besides hydrofluoric acid, fuming nitric acid, alkali, nearly can resist erosion of all chemical mediums(including boiling hydrochloric acid, nitric acid and below 150 sulfuric acid ). Not resisting erosion in alkali.


6. Pt/ Iridium Alloy: nearly resist all chemical matters, not fit for aqua regia and ammonium salt


7. Stainless Steel Painting Tungsten Carbide: Fit for mediums without erosion and strong attrition.