KAL-A(K)
KAL-A(K) K05/1116
Page 9
N/O function (KAL-AK)
In the N/O function the output is switching into the low resistance state
(PNP
+24 VDC impress on the output; NPN
GND 0 VDC impresses on the
output), if the actual value has reached or exceeded the set point
At the same time the green LED is flashing.
If the actual value is falling below the set point, then the output will become highly
resistant and the red LED will flash ( = ALARM-condition).
In case of a break-down of the power supply the output will be switched to highly
resistant (ALARM-condition).
9. Commissioning
The use of this meter in machines according to directive 89/392/EWG is
prohibited until the complete machine complies to this directive.
After mechanical (“Mechanical Connection”) and electrical (“Electrical
Connection”) installation of the sensor the flow meter has to be put into operation
as described in this section.
Calibration
a) Zero flow calibration
Stop the flow of the liquid in the piping in which the sensor is installed. It is
important that the sensor tip be immersed in the liquid. There should be no
bubbles around the sensor tip.
Turn set point adjustment potentiometer counter clockwise to its far left-hand
stop and now briefly press the SET button.
The bi-coloured LED will flash 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.
When the bi-coloured LED stops flashing, the zero flow calibration is set.
The device now switches automatically to the monitoring mode and displays
no flow. The LED strip is not illuminated; only the threshold value LED is
flashing.