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LED/LIGHT PROTOCOL
LED
Green
Red
ON
Flash
ON
Flash
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
Accuracy
Output signal
Time constant
Supply voltage
Max. current
Load
Max. output current
Cable
Max. cable length
Temperature, operation and
storage
DOL 140 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
% RH
% RH
V
T
63
V DC
mA
mA
°C
± 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
2 m 3 x 22 AWG / 0.34 mm
200 m 1.50 mm
www.dol-sensors.com
Functional graph
0 - 100
11 – 30
35
20
2
2
-40 to -60
Technical User Guide
3