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G
®
HYGRASGARD
Quality product for HVAC sector, accuracy 3 % r. H.
The calibratable pendulum room humidity sensor HYGRASGARD
the measurand humidity into a standard signal of 4...20 mA. Relative humidity (in % r. H.) is the quotient of water vapour partial pressure divided by
the saturation vapour pressure at the respective gas temperature.
The sensor applied in non-aggressive dust-free atmospheres in refrigeration, air conditioning, ventilation and clean room technology, hotels, technical
rooms, meeting rooms and convention centres. These measuring transducers are designed for precise detection of humidity. A digital long-term
stable sensor is used as a measuring element for humidity measurement. This sensor is suitable for duct installation, as a pendulum sensor, or for
integration in equipment.
TECHNICAL DATA
Power supply:
Power consumption:
Sensors:
Sensor protection:
Measuring range, humidity:
Operating range, humidity:
Deviation, humidity:
Output, humidity:
Ambient temperature:
Long-term stability:
Electrical connection:
Cable length:
Protective tube:
Protection class:
Protection type:
Standards:
2-wire
connection
(Transmitter)
+UB 24V DC
brown
Output humidity
white
in % r.H. 4-20mA
RPFF - SD (± 3 %)
15...36 V DC (± 10 %) (depending on working resistance)
< 1.1 VA ⁄ 24 V DC
digital humidity sensor
small hysteresis, high long-term stability
plastic sinter filter, Ø 16 mm, L = 35 mm, exchangeable
(optional metal sinter filter, Ø 16 mm, L = 32 mm)
0...100 % r. H.
(output corresponding to 4...20 mA)
0...95 % r. H. (without formation of dew)
± 3 % r. H. (20...80 %) at +20 °C, otherwise ± 5 % r. H.
4...20 mA, working resistance < 500 Ω,
see load resistance diagram
storage –25...+50 °C
operation –5...+55 °C
± 1 % per year
2-wire connection (see connecting diagram),
0.14 - 1.5 mm²
1.5 m
(other lengths optional on request)
stainless steel, Ø = 16 mm, L = 142 mm
III (according to EN 60 730)
IP 65 (according to EN 60 529)
CE conformity, according to EMC directive 2004 ⁄ 108 ⁄ EC,
according to EN 61326-1, according to EN 61326-2-3
RPFF - SD - I
®
RPFF - SD with plastic sinter filter measures the relative humidity of air. It converts
10
SD = Rev. 2016 - V20 GB
Load resistance diagram
500
Load resistance diagram
4...20 mA
Load resistance diagram
400
500
300
400
200
300
Admissible
100
200
50
100
10
15
Operating voltage (V DC)
50
10
15
20
25
Operating voltage (V DC)
RPFF - SD
Admissible
range
range
20
25
30
35 36 40
30
35 36 40
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