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Xian Qin Wei Instrument Factory

China Manufacturer with main products: Flowe Meter

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sanitary electromagnetic flowmeter

FOB Price: 50.00 - 500.00 USD/Piece
Supply Ability: 5,000 Piece/Pieces per Month
Shipping: Shanghai / Tianjin SEA / AIR
Payment Terms: L/C, D/A, D/P, T/T
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Export Markets: North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
Place of Origin: Shaanxi in China
Packaging Details: each unit has individual box and all boxes are packed in standard packages

Quick Details

  • Brand Name: Qinwei
  • Model Number: QWLD
  • Accuracy: 0.2%
  • Protection Grade: IP66 IP67 IP68
  • Communication: RS-485
  • Power Supply: 220V AC 24V DC
  • Pressure of Measured Liquid: 0.6-40MPa



1, corrosion and rust steel for the health sector;
2, easy installation and maintenance;
3, high accuracy, good repeatability;

sanitary electromagnetic flowmeter is composed of two parts- electromagnetic flow sensor and electromagnetic flow transducer.

The operation of an electromagnetic flowmeter is based on Faraday law of electromagnetic induction.The mainly parts of the sensor are: measuring tube,electrode poles,excitation coil,iron core,yoke and housing. The measuring tube of the sensor is a short alloy tube whose diameter is D, the inner suface of it has an insulating liner.Two electrodes are fixed in the measuring tube along with the diameter direction of it and they usually flush with the inner surface liner.When excitation coil pulsed by two-way square wave,there generates a working magnetic field with a flux density B in the vertical direction of the measurement axis.In the meantime,if some electrical conductivity liquid flows at an average velocity V through the measuring tube ,cuts lines of the magnetic field,there generates induced electromotive force E.Electromotive force E is directly proportional to the product of flux density B,measuring tube diameter D and average velocity V,that's: E BVD. Electromotive force E(flow signal) is measured by the electrodes and transmitted to transducer through cable.After the transducer handles the flow signal by magnifying it, the flow and total amount can be displayed,also will output pulse and analog current etc

LCD Display


High Accuracy: +/-0.2% (Customize), +/-0.5% (Standard)


Temperature of Measured Liquid: <80(Rubber), <180 (F4), <60 (PUR), <260(PFA)


Pressure of Measured Liquid: 0.6-40MPa 


Ambient Temperature: -25~+60


Power Supply: 220V AC, 24V DC, Built-in Battery (Working life:3-5 years)


Protection Grade: IP66, IP67, IP68


Connection: Flange, Clamp on, Thread


Ex-Proof Marks: Exde I b II BT3


Communication: RS-485, HART

Electrode material


  Stainless steel SUS316

  Applicable in water,sewage and corrosive mediums.Widely used in industries of petrol,chemistry,carbamide,etc

  Stainless steel     covered with tungsten carbide

  Applicable in mediums of no corrosive and low abrasion.

  Hastelloy B(HB)

  Having strong resistance to hydrochloric acid of any consistance which is below bioling piont.Also resistable against vitriol,phosphate,hydrofluoricacid,organic acid etc which are oxidable acid,alkali and non-oxidable salt.

  Hastelloy C(HC)

  Be resistant to oxidable acid such as nitric acid,mixed acid as well as oxidable salt such as Fe+++,Cu++and sea water


  Applicable in seawater,and kinds of chloride,hypochlorite salt,oxidable acid(including fuming nitric acid),organic acid,alkali etc.Not resistant to a pure reducing acid(such as sulphuric acid,hydrochloric acid)corrosion.But if acid contains antioxidant(such as Fe+++,Cu++)is greatly reduce corrosion.


  Having strong resistance to corrosive mediums that is similar with glass.Almost applicable in all chemical mediums.Except for hydrofluoric acid,oleum and alkali.


  Almost be applicable in all chemical mediums except for aqua fortis,ammonium salt

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