KAL-A(K)
Page 12
KAL-A(K) K05/1116
10. Maintenance
The unit is maintenance free. The sensor should be inspected in monthly
intervals for deposits (calcination etc.) and if necessary be cleaned.
11. Diagnostics
The KAL-A(K) continuously self monitors the sensing probe and the micro-
processor system upon short-circuit and circuit breaking. Any fault in these parts
of the electronics will be signalled by a flashing red bi-coloured LED and a
simultaneous flashing LED-bar (
KOBOLD Service).
12. Technical Information
Power Supply:
24 V
DC
± 20 %,
Power Consumption:
max. 3,6 W (typically 1.2 W) at rated voltage
Output Characteristics:
4-20 mA (optional 0-20 mA)
Max. load 500 Ohm
Switching Point Adjustment:
via Potentiometer (KAL-AK)
Semi-conductor output NPN or PNP
(factory-set on customer request)
Switching Characteristics:
N/O
Switching Output:
max. 400 mA
Switch Status Indication:
Bi-coloured LED (DUO-LED)
red = ALARM, green = FLOW
Standby Time:
max. 12 sec
Ambient Temperature:
-20 to +60 °C (-4 to 140 °F)
Housing Protection:
IP 65
Calibration Data:
stored in non-volatile memory, data retained
for at least 10 years in the event of a power
failure
Measuring range:
4 cm/s... 2 m/s
Accuracy:
± 10 % f.s.
Repeatability:
± 1 % f.s.
Medium Temperature:
-20 to +80 °C (-4 to 176 °F)
Temperature gradient:
unlimited
Maximum Pressure:
100 bar
Connection:
G 1/2 (G 1/4, G 3/4, M 12x1,
1/4" NPT, 1/2" NPT, 3/4" NPT)
Wetted Parts:
1.4305 (1.4301, 1.4571 on request)
Response Time:
5 sec.