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Flow measurement of acids and alkalis with electromagnetic flowmeters

admin 2 31 октября 2024

Electromagnetic flowmeters are widely used to measure various conductive liquids in industry. For example, the measurement of corrosive liquids such as sulfuric acid, sodium hydroxide, nitric acid, hydrochloric acid, seawater, sewage, various acids, alkalis and salts such as hydrochloric acid, acetic acid and hydrofluoric acid, various industrial wastewater, paper pulp. Tap water, drinking water, juice, milk can also be measured.

Large diameter (DN200-DN300) electromagnetic flowmeters are mainly used in wastewater, sewage, water supply and drainage systems. Small (DN4-DN25) and medium diameter (DN40-DN150) electromagnetic flowmeters are used in the pulp and paper industry to measure paper pulp and black lye, in the metallurgical and coal industries to measure suspensions and liquids and turbid water with suspended solids, in the chemical industry for measuring corrosive and aggressive liquids and solutions, in the pharmaceutical, food and biological engineering industries for juice, milk and pure water, in hygienic and sanitary applications.

To measure the flow of highly aggressive substances, the electromagnetic flowmeter is equipped with a liner made of PTFE. The body is made of stainless steel AISI 304 or AISI 316. The electrode is made of Pt/Iridium alloys.

Main characteristics of electromagnetic flowmeters

  • Medium: conductive liquids and suspensions, etc.
  • Accuracy: ±0,5%
  • Measuring range: 0.06 - 18000 m3/h.
  • Contents of the display information: instantaneous flow rate, accumulated flow rate.
  • Conditional passage: DN 15-DN3000.
  • Connection type: threaded, flanged, plug-in, etc.
  • Power supply: lithium battery or 24V DC power supply, 220V AC power supply.
  • Output: 4-20 mA output, RS-485 and GPRS communication, Hart, etc.
  • Advantages: high accuracy, wide measuring range, ease of use.
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