KAL-A - Thermal Flow Sensor for Water-Based Liquids

Brand: KOBOLD Instruments, Inc

The Model KAL-A thermal flow sensor for water-based liquids features KOBOLD’s revolutionary temperature-compensating electronics.

The compact, one-piece thermal flow sensor with no moving parts provides 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 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-A flow sensor a superior performer in many applications. To further enhance the versatility of the KAL-A, it is offered in a 3-A compliant version.

The thermal flow sensor applies the KAL's advanced microprocessor-based technology to the problem of flow rate detection. Although the calorimetrically sensed output is non-linear in nature, it is extremely repeatable.

The KAL-A incorporates the same 8-segment LED display found in the flow switch, with an optional PNP setpoint alarm relay if desired.
  • Revolutionary Microprocessor-Based Drift Stabilization
  • NPT and 3A Compliant Sanitary Fittings
  • No Moving Parts
  • Extremely Low Pressure Loss
  • Easy to Operate
  • Insensitive to Dirt & Debris
  • Made in the USA
  • Top Seller
  • Quick Delivery


Sensing Range

  • 0.16 to 6.6 ft/s


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

Wetted Material

  • 304/316-TI Stainless Steel

Maximum Pressure

  • 1450 psig

Maximum Temperature

  • 176° F


  • Approx. 1 %

Output Signal

  • 4-20 mA, 3-Wire (Non-Linear)

Optional Switch

  • PNP Transistor, 400 mA Max.

Media Category

  • Liquid


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