What are the types of hydrofluoric acid flow meters and rotor flow meters

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1. Selection of electrode material for integrated electromagnetic flowmeter

The electrode material should be selected according to the corrosiveness of the measured fluid. Please refer to the relevant manual. For special fluids, corrosion tests should be conducted. Material code: Corrosion resistance. 316L stainless steel V1 is suitable for neutral solutions such as industrial and domestic water, raw water and well water, urban sewage, etc. 2. Weak corrosive acids, alkalis, salt media such as type of carbonic acid, acetic acid, etc. Hastelloy alloy C. HC 1. Suitable for oxidation resistant acids such as nitric acid, mixed acids, chromic acid and sulfuric acid mixtures. 2. Corrosion resistance to oxidation salts or other oxidizing agent environments such as Fe and Cu3. Excellent corrosion resistance to seawater, alkaline solutions, oxide solutions, etc. Applicable: Hastelloy B HB 1 hydrochloride For non oxidizing acids, bases, and salts such as sulfuric acid, phosphoric acid, and hydrofluoric acid, it has good corrosiveness. However, it is not suitable. Titanium nitrate Ti is resistant to seawater, and various chlorides suddenly nucleate and corrode hypochlorite and various hydroxides. Tantalum Ta can withstand almost all chemical media except hydrofluoric acid. However, platinum Pt is expensive and suitable for all acid-base salt solutions (such as fuming sulfuric acid and nitric acid). Tungsten carbide W has excellent wear resistance and is specifically used for abrasive media such as mud and pulp. 2. How to choose electrode materials for electromagnetic flow meters? The selection of electrode materials for electromagnetic flow meters should be based on the chemical corrosiveness, temperature, pressure and ot

First, the selection principle prioritizes corrosion resistance. Electrode materials should be stable in the measurement environment for a long time to avoid measurement errors or instrument damage caused by corrosion. Please refer to the anti-corrosion manual or material corrosion data sheet to clarify the chemical stability of the material to the tested medium. The adaptability of working conditions needs to consider factors such as medium temperature, pressure, flow rate, and the presence of wear and erosion. For example, high temperature or high pressure environments may accelerate material corrosion, and higher performance alloys need to be selected. Under the premise of meeting corrosion resistance requirements, priority should be given to selecting materials with lower costs, easy processing, and replacement for economic and maintainability considerations. For special media, if conventional materials cannot meet the requirements, auxiliary measures such as coating protection or sacrificial anodes can be considered.

II. Common electrode materials and applicable scenarios Molybdenum containing stainless steel (0Cr18Ni12Mo2Ti) Applicable media: nitric acid, sulfuric acid with a concentration of<5% at room temperature;

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