dol sensors DOL 51 Manual técnico del usuario - Página 7

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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 51 must be removed during cleaning and disinfection.
Do not expose the DOL 51 housing to air in the livestock house without the sensor element mounted, it is how-
ever, okay to replace the element in the livestock house.
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
Pressure
DOL 51
Voltage range
Power range
Load for voltage output
Recommended load, voltage output
Load for current output
Measurement range
Voltage resolution
Resolution
Signal transmission resolution
Accuracy
Long term drift
Time constant: T50
www.dol-sensors.com
DOL 51, 0-10V, 4-20mA,
0-50ppm NH
Parameter
0 – 10
4 – 20
> 500 - < 10M
> 100
> 100 - < 470
0 – 50
0.2
0.32
0.5
1.5 ppm or +10% of the
measured value
< +10% of the mea-
sured value
< 30
22 – 26
< 200
0 – +50
-20 – +60
15 – 100
700 – 1300
Technical User Guide
3
Unit
VDC
mA
Ω
kΩ
Ω
ppm NH
3
V/ppm NH
3
mA/ppm
ppm NH
3
ppm NH
3
%
sec.
VDC
mA
o
C
o
C
%RH
hPa
7