KAL-A Calorimetric Meter/Switch

Brand: KOBOLD Instruments, Inc.

The KOBOLD KAL-A uses the calorimetric principle to continuously monitor the flow of low viscosity water-based media. Flow rate is transmitted via a 4-20 mA output while an optional PNP switch provides an alarm function.

The transmission capability of the KAL-A is made possible by the high degree of temperature stability provided by its “intelligent” microprocessor based design. This digital approach also enables the use of a single RTD element to both heat the probe tip and measure it’s temperature.

Integrating the heating measuring functions allows the probe to be machined into a single, continuous, protrusion-free surface. The absence of protrusions prevents contaminant from building up on the probe tip.

These design enhancements improve the KAL’s performance in two ways:
  1. The KAL's sensing stability is increased because contaminants cannot thermally isolate the prove from the liquid.
  2. System down-time associated with probe cleaning is dramatically decreased.

  • Response Time: 5.6 Seconds
  • Fittings: 1/2" and 3/4", 1-1/2" Tri-Clamp
  • Maximum Pressure: 1450 psig
  • Temperature Rating: -18° to 80° C (0° to 176° F)
  • Wetted Parts: 304/316 Stainless Steel
  • Housing: NEMA 4 (PA6)
  • Supply Voltage: 24 ± 2 Vdc
  • Signal Type: 4-20mA, 3-wire into 500 Ω max.
  • Linearity: ±10% of full range
  • Repeatability: ±1% of full scale
  • Zero Adjustment: 0-75% of range
  • Span Adjustment: 25-100% of range

Specifications

Electrical Connectors

  • Micro DC Connector with 6 feet of Cable

Environmental Protection

  • IP66
  • NEMA 4 / IP66

Maximum System Pressure

  • 0.07 bar
  • 6.9 kPa
  • psig: 1,450

NPT Connection

  • 1/2" NPT Male
  • 3/4" NPT Male

Operating Temperature - Sensor

  • -18° to 80° C (0° to 176° F)

Output

  • 4-20 mA

Principle of Operation

  • Thermal, Calorimetric

Response Time

  • 5.6 seconds

Supply Voltage

  • 24 Vdc ± 10 %

Switch Type

  • PNP Switch

Tri-Clamp Connection

  • 1-1/2" Tri-Clamp

Wetted Materials

  • Stainless Steel

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