Technical User Guide
2
DOL 140 4-20 mA
1 Product description
DOL 104 is a high-precision sensor for measuring relative humidity. It is intended for application in livestock
houses but is also well suited for a number of industrial applications.
The sensor features one analogue output with full protection against short-circuits and wiring failures.
The special sensor element and the built-in Teflon filter enable application in livestock houses with constantly
high humidity.
The sensor is microprocessor-controlled and has a two-color light emitting diode (LED) to communicate the op-
eration status and the error diagnostic.
2 Mounting guide
For optimum mounting of the sensor, use mounting clip or mount it free-hanging
in the cable.
The sensor element of the sensor requires free air passage.
Mount the sensor so it is not exposed to direct sunlight, as this would affect the
measurement.
Remember to put on a protection cap before mounting the cable.
3 Installation guide
Installation, servicing and troubleshooting of all electrical equipment must be carried out by quali-
fied personnel in compliance with the applicable national and international standard EN 60204-1
and any other EU standards that are applicable in Europe.
3.1 Connection of the sensor
Supply voltage
11-30 V DC
+ V (Brown)
+ GND (Blue)
% RH (White)
