How do chemical companies choose electromagnetic flowmeter electrodes correctly?

The electromagnetic flowmeter ordered by a chemical company in Taiyuan has been loaded and shipped. When they received the goods, they found that there were four types of HC electrodes, HB electrodes, titanium electrodes, and 316L. It is found that the three electrodes are indistinguishable, and how to choose the electrode correctly is a problem that many users are confused about. Next, we will discuss with you the problem of electrode selection of electromagnetic flowmeter. Electromagnetic flowmeter has excellent characteristics such as high precision, small pressure loss, strong anti-interference ability, etc. It is suitable for various acid-base salt solutions, pulp, sewage and other conductive liquids, and is widely used in petroleum, chemical, textile, food, pharmaceutical, papermaking, Environmental protection, water supply and drainage, sewage treatment and other industries. In actual production, there are many types of electrodes for different media. Improper selection will cause many problems such as cost accounting and trade disputes. Therefore, the selection of electrodes is particularly important. So, how to choose the electrode correctly? Electrode selection 316L electrode is suitable for which media and media that should not be used: 1. Domestic water, industrial water, raw well water, urban sewage 2. Weak corrosive acid, alkali and salt solution are not used: acid, alkali, ammonia Hastelloy Which media are suitable for B(HB) electrodes and the media that should not be used: 1. Non-oxidizing acids such as hydrochloric acid (concentration less than 10%) 2. Sodium hydroxide (concentration less than 50%), sodium hydroxide alkaline solution of all concentrations 3. Phosphoric acid and organic acids are not to be used: Which medium is suitable for nitric acid Hastelloy C (HC) electrode and the medium that is not suitable for use: 1. Mixed acid and mixed solution of chromic acid and sulfuric acid 2. Oxidizing salts such as Fe++++, Cu++, seawater 3, Phosphoric acid and organic acids should not be used: Which media are suitable for titanium hydrochloride (Ti) electrodes and the media that should not be used: 1. Salts, such as: (1) chlorides (chloride/magnesium/aluminum/calcium/ammonium/iron, etc.), (2) sodium salts , potassium salt, ammonium salt, hypoaluminate, sea water 2, potassium hydroxide, ammonium hydroxide, barium hydroxide alkaline solution with a concentration of less than 50% should not be used: hydrochloric acid, sulfuric acid, phosphoric acid, hydrofluoric acid and other reducing acids such as tantalum ( Da) Which medium is suitable for the electrode and the medium that should not be used: 1. Hydrochloric acid (concentration less than 40%), dilute sulfuric acid and concentrated sulfuric acid (excluding oleum) 2. Chlorine dioxide, ferric chloride, hypochlorous acid, cyanide Sodium, acetic acid, etc. 3. Oxidizing acids such as nitric acid (including fuming nitric acid), and aqua regia with a temperature lower than 80 °C should not be used: alkali, hydrofluoric acid and above are the various media corresponding to the electrodes of the electromagnetic flowmeter. I hope that users will choose When using electrodes, you can learn to correctly distinguish between various types of electromagnetic flowmeter electrodes.
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