G
HYGRASGARD
®
RPFF ⁄ RPFTF, RPFF - 25 ⁄ RPFTF - 25
Quality product for HVAC sector, accuracy 3 % r.H.
The calibrateable pendulum room humidity and temperature sensor HYGRASGARD
®
RPFTF with membrane filter measures the relative
humidity and temperature of air. It converts the measurands humidity and temperature into standard signals of 0 - 10 V or 4...20 mA and
is optional available with or without display. It has four switchable temperature ranges. Relative humidity (in % r. H.) is the quotient of water
vapour partial pressure divided by the saturation vapour pressure at the respective gas temperature. HYGRASGARD
®
RPFTF is applied
in non-aggressive dust-free ambiences in refrigeration, air conditioning, ventilation and clean room technology, hotels, technical rooms,
meeting rooms and convention centres. These measuring transducers are designed for exact detection of temperature and humidity.
A digital long-term stable sensor is used as measuring element for humidity and temperature measurement. Fine adjustment by the user
is possible. The sensor is appropriate for ceiling and duct installation, or for integrating it into equipment.
TECHNICAL DATA:
Power supply: .............................. 24 V AC (± 20 %) and 15 … 36 V DC (± 10 %) for U variant
15 … 36 V DC (± 10 %) for I variant (depending on working resistance)
Power consumption: .................. < 1.1 VA ⁄ 24 V DC ; < 2.2 VA ⁄ 24 V AC
Sensors: ....................................... digital humidity sensor
with integrated temperature sensor,
dew-proof, small hysteresis, high long-term stability
Sensor protection: ..................... membrane filter, exchangeable
RPFF ⁄ RPFTF: metal sinter filter
RPFF-25 ⁄ RPFTF-25: plastic sinter filter
HUMIDITY:
Measuring range, humidity: ...... 0 …100 % r. H.
(output corresponding to 0 -10 V or 4 … 20 mA)
Operating range, humidity: ....... 0 … 95 % r. H. (without formation of dew)
Deviation, humidity: .................... ± 3 % r. H. (20…80 %) at +20 °C, otherwise ± 5 % r. H.
Output, humidity: ........................ 0 -10 V at U variant
4 … 20 mA at I variant, working resistance < 800 Ω,
see load resistance diagram
TEMPERATURE:
Measuring range, temperature: ... multi-range switching (see table)
- 35 ...+35 °C; - 35 ...+75 °C; 0 ...+50 °C; 0 ...+80 °C
(output corresponding to 0 -10 V or 4 … 20 mA)
Operating range, temperature: ... - 35 ...+80 °C
Deviation, temperature: ............ ± 0.3 K (RPFF ⁄ RPFTF-U)
± 0.5 K (RPFF ⁄ RPFTF-I) at 20 °C
Output, temperature: ................ 0 -10 V or 4...20 mA
Ambient temperature: .............. storage - 25 …+ 50 °C
operation - 5 …+ 55 °C
Long-term stability: .................... ± 1 % per year
Electrical connection: ................ 2-, 3-, or 4-wire connection (see connecting diagram),
0.14 - 1.5 mm² via terminal screws on circuit board
Cable length: ............................... 2 m, other lengths optional
Enclosure: .................................... plastic, material polyamide,
30 % glass-globe-reinforced,
with quick-locking screws,
colour pure white (similar RAL 9010)
Dimensions: ................................. RPFF ⁄ RPFTF:
72 x 64 x 39.4 mm
RPFF-25 ⁄ RPFTF-25:
108 x 70 x 73.5 mm
Cable gland: ................................. M16, including strain relief
Protective tube: .......................... RPFF ⁄ RPFTF:
metal, L =100 mm + 25 mm, Ø =16 mm
RPFF-25 ⁄ RPFTF-25:
stainless steel, L =120 mm, Ø =18 mm
Protection class: ........................ III (according to EN 60 730)
Protection type:.......................... IP 65 (according to EN 60 529)
Standards: ................................... CE conformity,
according to EMC directive 2004 ⁄ 108 ⁄ EC,
according to EN 61326-1: 2006,
according to EN 61326-2-3: 2006
Optional: ....................................... two-line display with illumination, 36 x15 mm (W x H),
for displaying ACTUAL temperature
and ⁄ or ACTUAL humidity
