DOL 104 4-20 mA Technical User Manual - Page 3

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LED/LIGHT PROTOCOL
LED
Green
Red
ON
Flash
ON
Flash
4 Maintenance
When cleaning and disinfecting the house, the protective cap must be put on the sensor so that it hangs with
the tip up, as shown in the picture.
Sensor is cleaned with:
After the sensor has been exposed to water and condensation, it requires a period where the relative humidity
is lower than 80 %RH in order for it to measure correctly.
Do not bend the sensor as this would inflict permanent damage on the electronics of the sensor.
5 Technical data
Measuring range
Accuracy
Output signal
Time constant
Supply voltage
Max. current
Load
Max. output current
DOL 104 4-20 mA
Status
Operation OK
Outside normal range
(below 10 % RH or exceeding 95 %
RH)
Connection error
Load error, see load graph
Sensor defect
Over or under voltage alarm
Overload
• Water and brush
• High-pressure cleaning with cold water (only with attached protective cap)
Avoid using:
• High-pressure cleaning with hot water
• Highly compressed air
• Solvents
• Corrosive/caustic agents
• Alcohol-based disinfectants
% RH
% RH
V
T
63
V DC
mA
mA
± 2% RH (40–85 %) ± 3% RH (10-95 %) at 0-40 °C
0.16 mA / % RH
20 s at 0.5 m/s air speed
See figure regarding load resistance and supply voltage
www.dol-sensors.com
Functional graph
0 - 100
11 – 30
35
20
Technical User Guide
3