Bopp & Reuther SpiraMAG Electromagnetic Flowmeter
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Magnetic flowmeters
Media
Steam and condensate
Process media
Manufacturers
Bopp & Reuther Messtechnik
Technical Specifications
Size ranges: DN 15-2000
Pressure classes: PN 6-40
Body materials: carbon steel, stainless steel, Hastelloy
Electrode materials: Hastelloy, platinum-coated stainless steel, titanium
Lining: soft rubber, hard rubber, PTFE/PFA
Accuracy: ±0.25% of the measured value, ±0.1% of the full-scale value
Special features: empty pipe detection, third grounding electrode optional, bidirectional measurement, direct output 4–20 mA, pulse output, Modbus (RTU & ASCII), battery-powered solutions available
Other names: magnetic flow meter
What is a Magnetic flowmeter?
Magnetic flowmeters are used for electrically conductive liquids with a conductivity of at least 5 µs/cm.
The measurement is based on electromagnetic induction. Electromagnets create a magnetic field; when an electrically conductive medium flows through the magnetic field, it induces a voltage. The voltage increases as the flow increases according to the following formula:
U = B*I*V
U = induced voltage
B = magnetic flux density
I = distance between the measuring electrodes
V = flow velocity of the medium
Selection of the magnetic flowmeter
In addition to a wide measurement range, magnetic flowmeters are a relatively cost-effective method for liquids.
The measuring tube is normally lined with rubber or Teflon, but it is also available without lining for corrosive applications.
We assist in selecting a remote control device that meets the requirements of the application. Ask our contacts for more information.
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Kaj Bergström
sales manager, technical adviser instruments, field device installations
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