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Flow Switches

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Our Bulletin 839E Flow Switches monitor and display liquid media flow rate from 0.03 to 3 m/sec (0.1 to 9.84 ft/sec). This sensor measures both flow and temperature and is available with two different probe insertion lengths.

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Condition Sensors Brochure Solid-State Flow Sensors User Manual
839E Solid-State
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Overview

  • Rugged, corrosion-resistant 316L stainless steel housing with IP66 enclosure rating
  • Flow rates of liquid media (calorimetric measuring principle) range from 0.03...3 m/sec (0.1...9.84 ft/sec)
  • Four digit 14-segment digital display
  • Dual NO/NC programmable PNP outputs or 4...20 mA analog outputs with single PNP output
  • IP67 enclosure rating to withstand harsh industrial conditions
  • 316L stainless steel probe
  • Selectable units of measurement °C, °F, or %

Flow Switches

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Specifications

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Solid-State Flow Sensors User Manual
Certifications
  • 3 A authorized only with sanitary adaptor
  • CE Marked for all applicable directives
  • cULus Listed
Looking for Additional Information?

To find additional product information including CAD drawing files, 3D models and more use our Product Catalog.

Product Catalog

Documentation

Resource Publication Number Language
Condition Sensors Brochure 836E-BR001
Solid-State Flow Sensors User Manual 839E-UM002
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Applications

Allen-Bradley solid-state sensing devices are designed to produce high-quality results in a variety of rugged environments. The flexibility of switch configuration and mounting options make the 839E suitable for a wide range of applications including:

  • Harsh Chemical Wash-Down — 316L stainless steel construction, laser-etched markings and IP66 rating for food, beverage, and other applications requiring equipment wash-down.
  • Water/Wastewater — Monitor cooling water circulation systems of pumps, turbines, compressors and heat exchangers.
  • Pump Protection — Monitor pump functionality and lubrication systems, leak monitoring in process lines. Monitor coolant flow.
  • Beverage — Filter monitoring and flow/no-flow in process lines.
  • Discrete Batch — Monitor process flows.
  • OEM Machine Builders / Large End Users — Programming with ReadWin2000 configuration kit reduces switch setup time.

See how the 839E Solid-state Flow Switches are used in water treatment applications:

Essential Components Case Studies — View our case studies site to discover how customers have applied Allen-Bradley components in their applications.

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