Schwank 40660000, Technical Manual

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Revision: 3.0 Page 50 of 70
10.9.3. Humidity sensor
Type 1 is used [see pin assignment], article number:
70000142
Application
Apparatus for measuring the relative humidity
in industrially and commercially used facilities.
Characteristics
The standard series covers several different
measuring ranges of temperature and humidity
including relative, absolute humidity, dew point,
enthalpy or mix ratio [see configuration table].
The measuring transducer reads the data via
an internal sensor and converts the result into
a standardized analogue output signal
[0-10 V, 4-20 mA].
The capacitive sensor offers longterm stability
and does not need to be recalibrated.
General Information
Power supply
12[20]…34 V AC/DC [Relay]
Connection 3-wired-connection
Connection clamp Screw clamps, max 1.5 mm²
Switching output Relay 24 V / 1A, potential free changer
Power consumption
24…44 mA
response time r.h. 8 sec. [63% dew]
Sensor setting up time 60 min.
Signal output
Typ I r.h. / °C [3-wired]
4…20 mA
Analogue output burden
50…500 Ohm
Typ U r.h. / °C [3-wired]
0…10 V
Analogue output load 10...100 kOhm
Housing
Dimensions 87,5x87,5x30 mm
Material ABS, RAL 9010
Admissible environmental conditions
0…50 °C; 0...98% r.h.
Protection class IP 20
Sensor
Sensor [r.h. / °C] capacitive
Measuring range r.h.
0…100 % r.h. [see measuring ranges S1]
Tolerance r.h. 25 °C: +/-
2 % r.h. [20…80 %] + 2% f.s.
Measuring range °C 4 presetted ranges adjustable [see S1]
Tolerance °C +/-
0,3 °K [5…60 °C] + 1% f.s
Sensor setting up time 60 min
Optional: Sensor °C passive, isolated NTC1,8k /5k /10k /20k / Precon, KTY81-110,
KTY81-210, LM235Z, DS18B20, Pt100, Pt1000 [Kl. A, B, 1/3DIN], Ni1000, Ni1000TK5
Measuring range/tolerance °C passive see resistance characteristics