Flow Monitor - FWS

Brand: WIKA Alexander Wiegand SE & Co. KG

The model FWS flow monitors are used for the display and monitoring of the flow of liquid and gaseous media, e.g. in cooling systems and cooling circuits of welding machinery, laser and piping systems, dosing systems, pumps, compressors, hydraulic systems, high-pressure plants and many more.
  • High switching accuracy and functional safety.
  • Large switching range, low switch hysteresis.
  • Continuous switch point setting by the operator.
  • Viscosity compensated models available.
  • Explosion-protected versions.


Mounting Position

  • Vertical

Flow Range

  • 0.005 to 250 L/min H₂O
  • 0.2 to 1,450 Nl/min Air

Body Material

  • Main: Nickel-Plated Brass
  • Main/float: Stainless Steel 1.4571
  • Float: Brass, Nickel-Plated Brass

Seal Material


Process Connection

  • G 1/4” Female
  • 1/4” NPT
  • 1” NPT
  • G 1” Female
  • G 3/8” Female
  • 3/8” Female NPT

Environmental Protection

  • IP65
  • IP67

Certifications & Approvals

  • ATEX

  • Continuous flow indication without power supply
  • Thirteen different versions and corrosion resistant materials make the products suitable for a broad range of applications
  • Machine building, chemical industry, pharmaceutical industry, medical engineering
  • Cooling systems and cooling circuits, transformers, central lubrication systems and recirculating oil lubrication systems
  • Research and development


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