KAL K
Electronic Flow Monitor for Liquids
Calorimetric flow switch : flow or no flow
Method of operation
The model KAL-... electronic flow monitor continuously
monitors liquid media. It is suited for securely monitoring
flows with minimum pressure loss. Sensitivity to soiling is
significantly reduced by means of a single-part sensor.
Theory of operation
The operation of the model KAL-... electronic flow monitor
is based on the calorimetric principle. The end face of the
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, ie, the sensor
is cooled. The cooling procedure is an accurate measure of
the flow velocity.
The sensor signal is compared with the reference data stored
in a microcontroller. An alarm signal and/or an analog signal
(4-20 mA) that is proportional to the flow velocity is output if
the actual flow velocity deviates from the desired flow velocity.
The microcontroller allows the flow indicator to be easily
calibrated and the temperature to be compensated.
Features - Optimal temperature compensation
- Intelligent switching
- Measuring range adjustment
- No moving parts
- Easy to fit and put into service
- Minimum pressure loss
- Easy to use
Temperature compensation
The temperature of the KOBOLD flow monitor is compensated
with a microcontroller. All data required for temperature
compensation are stored in EEPROMS, and are maintained
for at least 10 years after power failure. The instruments may
be easily adjusted by the customer to suit process conditions.
The measured flow rate is compared with the zero-point
adjustment values stored in the EEPROM and the stored characteristic
curves. The data is processed by the microcontroller
and controls the alarm signal or the analog output.
The sensor switching point is absolutely consistent, as the
sensors have been adapted to suit the process data.
Datasheet: kobkalk.pdf
Operating Manual: kobkalkm.pdf
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