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KAL-L Calorimetric Indicator/Switch
Brand: KOBOLD Instruments, IncThe 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, Max.
Electrical Connectors
- DIN 43650-Typical Connector
- Floating Changeover Contact
- M12 x 1
- M16 x 1.5
- M18 x 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: Max.
- Switching Capacity: Max.
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