DOL 53 Технічний посібник користувача - Сторінка 6
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LED indication
Alternating GREEN
and YELLOW
Constant GREEN
GREEN flashing
quickly
Constant YELLOW
YELLOW flashing
GREEN flashing
GREEN/GREEN/
GREEN/YELLOW
7 Trouble shooting instructions
Error
Packaging is damaged.
No measurement on the control
unit.
Incorrect measurement on the
control unit.
Unexpected measurement on
the control unit.
Unstable measured value.
Wet sensor.
6
Sensor status
DOL 53 housing is defective.
Sensor is warming up to be
ready for measurements, signal
level 0 V.
Normal operation.
The concentration of ammonia is
between 40-60ppm which is used
for testing the sensor. The sensor
is working but it thinks it is in test
mode.
Internal fault detected by electron-
ics, signal level 0 V.
There is very little ammonia in the
livestock house - under -5ppm, the
sensor output is 0V.
Concentration measurement is
above 105ppm outside the mea-
suring range.
Age monitoring, sensor element is
older than 3 years, service life is
expired, see date on sensor ele-
ment type plate.
Cause
Damage in transit.
Electrical connection faulty or in-
terrupted.
DOL 53 aligned incorrectly, not
vertical.
Sensor element is faulty or used
up.
DOL 53 housing is defective.
The dust filter is clogged.
Brief interference pulses <5 sec-
onds.
Dynamic signal fluctuations with
a period of more than 5 seconds
can arise from turbulence with
fresh air.
DOL 53 was cleaned with water. Wipe DOL 53 dry.
Action
Replace the DOL 53 housing, contact the sup-
plier.
No activity. Flashing stops after max. 30 minutes.
No activity. Flashing stops after max. 5 minutes.
Replace the DOL 53 housing.
Replace the sensor element, if the fault continues
for more than one day.
Ventilate with fresh air.
Replace the sensor element.
Action
Contact the supplier in case the sensor
element is damaged.
Check installation for cable break.
Install the sensor in accordance with
mounting instructions, vertical +/- 15°.
Replace the sensor element.
Replace the DOL 53 house.
Replace the dust filter.
Check the sensitivity with test gas.
Interference caused by electrical equip-
ment, e.g. lighting, fans or heaters. Iden-
tify device and suppress interference.
No activity, continue to monitor.
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Technical User Guide
DOL 53