KAL-A(K)
Page 10
KAL-A(K) K05/1116
b) Calibration of the maximum flow
The flow monitor is factory pre-set at its maximum span. This span corresponds
to a water flow velocity of 2 m/s. If fluid is running through the pipe the trend
indicator is showing the actual system flow. At lower flow speeds, not all 8 LEDs
will illuminate. To achieve finer monitoring resolution, the measuring range can
(should) be adapted to better fit the actual flow speed.
Rotate the potentiometer clockwise as far as it will go (to the right-hand
stop). The extreme right-hand LED in the LED strip will blink. The maximum
flow speed must be present.
Now press the SET button. The bi-coloured LED blinks green.
Do not make any changes (potentiometer setting, etc.) while the bi-coloured
LED is blinking. This adjustment phase will last approx. 5-15 sec.
The setting procedure is now complete. The device now switches
automatically to the monitoring mode. This adjustment has set the device
measuring range so that it now extends across the entire analogue output
range (0-100% = 4-20 mA) and the LED trend indicator (8-LEDs).
The adjustment procedure is now complete. It may be repeated as often as
necessary.
c) Measuring mode
After adjustment, the flow monitor is once again in measuring mode.
The flow is constantly monitored and the actual value of the flow speed is
displayed on the LED strip.