KAL-K - Thermal Flow Switch with LED Flow Trend Indication for Water-Based Liquids

Brand: KOBOLD Instruments, Inc

The KAL-K thermal flow switch utilizes KOBOLD’s revolutionary, temperature compensating electronics. These compact, one-piece units provide reliable readings largely unaffected by temperature or physical characteristics of a wide variety of water-based process liquids.

This breakthrough is made possible through the use of state-of-the-art microprocessor technology. The microprocessor can be field calibrated to the users’ liquid properties and operating range in a simple, five minute set-up procedure.

This intelligence, coupled with a “no moving parts” design, make the KAL-K a superior performer in many tough flow switching applications.

To further enhance the versatility of the KAL-K, it is offered with a NPT or a 3-A compliant Tri-clamp® fitting. The thermal flow switch incorporates an 8 segment bar-graph LED flow trend indicator and one flow alarm setpoint.

The setpoint is fully configurable as NPN, PNP, normally-open or normally-closed.
  • Revolutionary Microprocessor-Based Drift Stabilization
  • NPT and 3A Compliant Sanitary Fittings
  • No Moving Parts
  • Negligible Pressure Loss
  • Easy to Operate
  • Insensitive to Dirt
  • Made in the USA
  • Top Seller
  • Quick Delivery


Switching Range

  • 0.2 to 6.6 ft/s


  • 1/2” or 3/4” NPT Thread
  • 1-1/2” Tri-Clamp

Wetted Material

  • 304 or 316-Ti Stainless Steel

Maximum Pressure

  • 1450 psig

Maximum Operating Temperature

  • 250° F

Input Power

  • 24 Vdc ± 10 %, 110 Vac Optional


  • NPN/PNP Transistor
  • N/O Relay

Media Category

  • Liquid


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