Technical User Guide
DOL 104 0-5 V
3
LED/LIGHT PROTOCOL
Functional graph
LED
Status
Green
Red
ON
Operation OK
Flash
Outside normal range
(below 10 % RH or exceeding 95 %
RH)
ON
Connection error
Load < 500 Ω
Flash
Sensor defect
Over or under voltage alarm
Overload
4 Maintenance
Clean the sensor with water and a brush without using:
• High-pressure cleaner
• Highly compressed air
• Solvents
• Corrosive/caustic agents
• Alcohol-based disinfectants
During cleaning and disinfection, the sensor should be removed and the sealing plug for the ca-
ble should be mounted. Alternatively, the sensor protective cap can be mounted. The sensor
must be placed with the tip pointing upwards during disinfection.
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
Measurement range
% RH
0 - 100
Accuracy
% RH
± 3% RH (40–85 %) ± 4% RH (10-95 %) at 0-40 °C
Output signal
V
0.05 V / % RH
Time constant
T
63
20 s at 0.5 m/s air speed
Supply voltage
V DC
11 – 30
Current
mA
12 mA no load
35 mA max. load
Load
Ω
> 500 Ω - < 10 MΩ
Recommended load
kΩ
≥ 100
Max. output current
mA
20
Output impedance
Ω
< 1
Cable
2 m 3 x 22 AWG / 0.34 mm
2
