KAL-L Calorimetric Indicator/Switch

Brand: KOBOLD Instruments, Inc.

The KOBOLD Model KAL-L electronic flow switch monitors air and gas flow. It is suited for securely monitoring flows with mini-mum pressure loss.

Function
The operation of the electronic flow monitor KAL-L is based on the proven calorimetric principle. A sensor is heated to a few degrees above the temperature of the flow medium. When the medium flows, the heat generated in the sensor is transferred to the medium, i.e, the sensor is cooled. This cooling process is a measure of the flow velocity. A second sensor measures the medium temperature.

The electronics compares the resistances of both sensors by means of a Wheatstone bridge circuit, and switches an output relay if the actual value drops below the set switching value.

Specifications

Accuracy

  • ± 10 % of Reading

Adjustment Type

  • Switch Point Adjustment - with Potentiometer

Ambient Temperature Range

  • -10° to 60° C (14° to 140° F)

Applications

  • Air Conditioning Systems
  • Extraction, Conveying Plants

BSP Connection

  • G 1/2" Female
  • 1/2" BSPP Female

Consumption

  • 4 VA, Maximum

Electrical Connectors

  • DIN 43650-Typical Connector
  • Floating Changeover Contact
  • M12 × 1
  • M16 × 1.5
  • M18 × 1.5

Electrical Contacts

  • Floating Changeover Contact

Environmental Protection

  • IP65

Indication

  • 2 Colour LED - Output Indicator
  • 8-Digit LED Bargraph

Maximum System Pressure

  • psi: 116 (kPa: 800, bar: 8)

NPT Connection

  • 1/2" NPT Female

Output Format

  • Relay Output

Power Requirement

  • 24 Vac/dc

Process Temperature

  • -25° to 120° C (-13° to 248° F)

Relay Output

  • Switch Capacity: Maximum
  • Switching Capacity: Maximum

Repeatability

  • ± 1 % of Reading

Response Time

  • 1 to 60 seconds - Adjustable

Sensor / Probe Material

  • Brass
  • Nickel-Plated

Switch Point Range

  • 1 to 20 mps - at 20° C, psi: 14.5 (kPa: 100, bar: 1)

Temperature Range

  • Maximum

Update Time

  • Maximum

Show More