DOL 53 Manual técnico del usuario - Página 7
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Error
Black fluid is leaking from the
sensor element.
8 Maintenance
The sensor element must be replaced after 3 years of operation at the latest, see date on the sensor element
type plate.
Carry out the daily visual inspection to detect operation readiness.
Have specialists carry out the annual inspection and sensitivity check.
Replace the dust filter in front of the sensor element, if clogged. A clogged filter prolongs the re-
sponse time of the sensor element. This affects the sensitivity. The dust filter must always be re-
placed prior to checking the sensitivity.
DOL 53 must be removed during cleaning and disinfection. After removing the connector, screw
on the sealing plug. A missing sealing plug leads to corrosion of the connector.
Cleaning
Clean the sensor surface with lukewarm water. Check for mechanical damage.
Transport
The sensor must be transported in the original packing in air traffic. Otherwise the sensor may
lose its measuring sensitivity.
9 Technical data
Specification
Output
NH3
Supply voltage
Supply current
Temperature, operation
Temperature, storage
Humidity
DOL 53
Cause
Condensation.
The sensor element is defective. Replace the sensor element.
Voltage range
Measurement range
Voltage resolution
Signal transmission resolution
Accuracy
Long term drift
Time constant: T50
www.dol-sensors.com
Action
DOL 53, 0-10V, 0-100ppm NH
Parameter
0 – 10
0 – 100
0.1
0.5
1.5 ppm or +10% of the
measured value
< +10% of the mea-
sured value
< 30
18 – 30
< 10
0 – +50
-20 – +60
15 – 95
Technical User Guide
3
Unit
VDC
ppm NH
3
V/ppm NH
3
ppm NH
3
ppm NH
3
%
sec.
VDC
mA
o
C
o
C
%RH
7