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Flow Sensor, Flow Set Point Switching, RFS Series, 4 to 20 gpm, 5 %, NPT, 12.7 mm


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Manufacturer Part No:
Newark Part No.:
Product Range
RFS Series
Technical Datasheet:
156269   Datasheet
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Product Range Selector (RFS Series)

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Product Overview

The RFS series RotorFlow® Switches build an extra level of reliability and protection into your equipment. By principle of operation, the rotor cannot be deceived into indicating a positive flow situation when no flow actually exists. Once set to a desired actuation point, RotorFlow will switch to a “no-flow” condition should the rotor stop for any reason. The sensor protects expensive electronic equipment from coolant flow failure on semiconductor processing equipment, lasers, medical equipment, X-Ray and other high power tubes, robotic welding equipment.
  • 200psig (13.8bar) at 70°F (21°C) Maximum operating pressure (brass or stainless steel body)
  • 100psig (6.9bar) at 70°F (21°C) Maximum operating pressure (polypropylene body)
  • 0.25 to 1" NPT port size
  • 200SSU Maximum viscosity
  • 1A, 24VDC Resistive and 0.3A, 110VAC relay contact ratings (SPDT)
  • 2% Maximum deviation repeatability
  • ±5% Set point accuracy
  • 15% Maximum set point differential
  • 20AWG PVC-jacketed, 24" cable electrical termination


Sensing & Instrumentation, Medical, Robotics, Industrial

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20GPM (US)






RFS Series

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Technical Docs (1)

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