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®
HYGRASGARD
Quality product for HVAC sector, accuracy 3 % r. H.
The calibrateable room humidity and temperature sensor HYGRASGARD
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
(for displaying actual humidity and actual temperature) in an elegant enclosure made of plastic, with snap-on lid, base with 4-hole attachment for
installation on vertically or horizontally installed in-wall flush boxes, with predetermined breaking point for on-wall cable entry, or in enclosures made
of stainless steel (top and bottom part are of stainless steel, the lid is screwed on), vandalism-secure version e.g. for schools, military barracks, and
public buildings. 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
ventilation and clean room tech nology, in interior rooms such as residential rooms, offices, hotels, technical rooms, meeting rooms and convention
centres. These measuring transducers are designed for exact detection of air 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.
TECHNICAL DATA:
Power supply: ........................ 24 V AC (± 20 %) and 15 ... 36 V DC (± 10 %) for U variant
Power consumption: ................ < 1.1 VA ⁄ 24 V DC ; < 2.2 VA ⁄ 24 V AC
Sensors: ............................... digital humidity sensor with integrated temperature sensor,
HUMIDITY:
Measuring range, humidity: ....... 0 ...100 % r. H.
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,
TEMPERATURE:
Measuring range, temperature: ....... 0 ... + 50 °C
Operating range, temperature: ....... 0 ...+ 50 °C
Deviation, temperature: ........... ± 0.8 K at 20 °C, under standard conditions
Output, temperature: .............. 0 -10 V or 4 ... 20 mA or Ohm value
Ambient temperature: ............. storage - 25 ...+ 50 °C, operation - 5 ...+ 55 °C
Electrical connection: .............. 2-, 3- or 4-wire connection (see connecting diagram)
Enclosure: ............................. plastic, material ABS,
Enclosure dimensions: ............. 98 x 106 x 32 mm (Frija II)
Installation: ........................... wall mounting or on in-wall flush box, Ø 55 mm,
Long-term stability:................. ±1 % per year
Protection class: .................... III (according to EN 60 730)
Protection type: ..................... IP 30 (according to EN 60 529)
Standards: ............................ CE conformity,
Optional: ............................... two-line display with illumination, 36 x15 mm (W x H),
RFF ⁄ RFTF
®
RFF ⁄ RFTF are applied in non-aggressive dust-free ambiences in refrigeration, air conditioning,
15 ... 36 V DC (± 10 %) for I variant (depending on working resistance)
dew-proof, small hysteresis, high long-term stability
(output corresponding to 0 -10 V or 4 ... 20 mA)
working resistance < 800 Ω, see load resistance diagram
(output corresponding to 0 -10 V or 4 ... 20 mA or Ohm value)
others upon request!
0.14 -1.5 mm ² via terminal screws on circuit board
colour pure white (similar RAL 9010),
stainless steel enclosure optional
100 x 100 x 25 mm (stainless steel)
base with 4-hole for mounting on vertically or horizontally
installed in-wall flush boxes for cable entry from the back,
with predetermined breaking point for on-wall cable entry
from top ⁄ bottom in case of plain on-wall installation
according to EMC directive 2004 ⁄ 108 ⁄ EC,
according to EN 61326-1: 2006,
according to EN 61326-2-3: 2006
for displaying ACTUAL temperature and ⁄ or ACTUAL humidity
®
RFF ⁄ RFTF measures the relative humidity and ⁄ or temperature of air.
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