General Information
These measuring transducers register relative humidity and temperature and are suitable for applications in climatisation. A
capacitive humidity measuring element registers the relative humidity and converts it in current (4...20 mA) or voltage (0...10
V) signals. This version is designed for mounting in rooms. The temperature is registrated by a platinum temperature sensor
according to DIN EN 60751 whose signal is also converted.
The housing of the room version has a simple and robust closing mechanism. After mounting the base part, the top which
contains the transmitter electronics, can be easily clipped into place and pressed shut without any tool.
Technical data
Humidity
Output range
0..100%rh
Accuracy at 23°C
±2,5%rh (40...60%rh)
3%rh (10...40%rh or 60...90%rh)
Influence of temperature
±0,05 %rh/K ref. to 23°C
Temperature
Output range
-30...+70°C, 0...+50°C or 0...+100°C
Accuracy at 10...40°C
±0,25 K (voltage)
±0,4 K (current)
Voltage supply
for voltage-output 0...1V
6...30 V DC / 6...26 V AC
for voltage-output 0...10V
15...30 V DC / 13...26 V AC
for current-output 4...20 mA
10...25 V DC
Load resistance R
L
≥
10 k
Ω
(voltage output)
Load R
L
(current output)
Measuring medium
air, pressureless, non-aggressive
Operating temperature
-30...+60ºC (also for display version)
Storage temperature
-40...+85°C
Fixing
slots in housing base
Mounting position
The sensors should be mounted such that air in the room can flow upwards
unimpeded through the ventilation slots in the housing cover.
Connecting terminals
for conductor cross sections max. 1.5mm²
Cable connection
by in-wall junction box or on-wall calbe
Electromagnetic compatibility
EN 61326-1 and EN 61326-2-3
Housing
ABS RAL 9003
LCD display
optional,
2 lines, 3 1 decimal place, digit height approx. 8 mm
Degree of protection
IP 30D
Weight
approx. 0.058 kg
”
Subject to modifications
”
Hygro und Hygrothermo Transducers (capacitive)
room version 4...20mA or 0...10VDC
according to data sheet 907020
Maintenance - Instructions for use - Effect of pollutants
Depending on type and concentration, agents that are corrosive and contain solvents, can result in faulty measurements
and can cause the sensor to break down. Substances deposited on the sensor (e. g. resin aerosols, lacuer aerosols, smoke
deposits etc.) are damaging as they eventually form a water-repellent film.
Type 907020/11
Ω=
voltage supply - 10 V
0,02 A
±
50 Ω
