KAL-K
Page 4 KAL-K K03/0516
Sensor
The model KAL-K consists of a sensor with integrated electronic.
The devices may only be used for liquids to which the probe material is resistant.
With proper installation and maintenance, the probes are not sensitive to soiling
and cause practically no pressure loss.
Materials
Sensor Stainless steel (1.4301, 1.4305, 1.4571)
Electronic housing Polyamide (glass fibre reinforced)
Setting ranges
in relation to nominal tube diameter
ND (mm) Meas. range (L/min)
water ND (mm) Meas. range (L/min.)
water
8 0,12 - 6,0 40 3,0 - 150
10 0,19 - 9,4 50 4,7 - 235
15 0,42 - 21,2 60 6,8 - 340
20 0,75 - 37,7 80 12,0 - 603
25 1,18 - 59,0 100 18,8 - 942
30 1,70 - 84,8 150 42,4 - 2120
Attention! The flow ranges specified in the table above have been
calculated for each pipe diameter based on the known velocity
range of the KAL-K. It must be noted that flow in pipes is non-
uniform across the pipe cross section, and approaches zero at the
pipe wall. This means that, in practice, the depth of installation of
the probe, the internal pipe diameter, and the flow profile of the
liquid in the pipe can interact to produce significant deviations from
the flow ranges in the above table.
5. Operating Principle
The KAL-K Flow Monitor uses the proven thermal dispersion principle and
operates as follows. The probe is heated internally to a few degrees above the
temperature of the medium into which it extends. The flowing medium removes
this heat from the probe. The cooling rate is proportional to the flow rate. The
measured flow rate is compared to the set point value selected by user. If the set
point is reached, the electronic circuit activates a transistor switch and bi-coloured
alarm LED. The electronic circuit also controls an LED trend indicator which can
be used to indicate relative system flow. The microprocessor- controlled design
permits sample calibration and set-up. The compact probe design permits
monitoring of flow rate with minimal pressure loss.
