Selection of Electrode Lining Material for Electromagnetic Flowmeter.
The electrode material should be selected according to the corrosiveness of the fluid to be tested. Please refer to the relevant corrosion manual.
Tests should be made for special fluids.
| Material | Corrosion resistance |
| 316L | Application: 1. Domestic water, industrial water, raw well water, urban sewage, 2. Weakly corrosive acid, alkali, salt solution |
| Ti(Titanium) | Application: 1. Salt, such as (1) Chloride (chloride/magnesium/aluminum/calcium/ammonium/titanium, etc.) (2) Sodium salt, potassium salt, ammonium salt, hypochlorite, seawater 2, the concentration is less than 50% potassium hydrochloride, ammonium hydroxide, barium hydroxide alkali solution Not applicable: Hydrochloric acid, sulfuric acid, phosphoric acid, hydrofluoric acid, barium cyanide alkali solution |
| Ta(Tantalum) | Application: 1. Hydrochloric acid (concentration less than 40%), dilute sulfuric acid, and concentrated sulfuric acid (excluding fuming sulfuric acid) 2. Chlorine dioxide, magnesium chloride, hypochlorous acid, sodium cyanide, lead acetate, etc. 3. Nitric acid (including fuming nitric acid) and other oxidizing acids, aqua regia with a temperature lower than 80℃ Not applicable: alkali, hydrofluoric acid |
| Pt(Platinum) | Application: almost all acid, alkali, and salt solutions (including fuming sulfuric acid, and fuming nitric acid) Not applicable: aqua regia, ammonium salt |
| Hastelloy | Application: 1. Hydrochloric acid (concentration less than 10%), all concentrations of ammonium hydroxide alkali solution 2. Sodium hydroxide (concentration less than 50%), all concentrations of ammonium hydroxide alkali solution 3. Phosphoric acid, organic acid Not applicable: Hydrochloric acid |