Technical Data - S+S Regeltechnik HYGRASGARD DFF Notice D'instruction

G
®
HYGRASGARD
The calibratable humidity and temperature sensor HYGRASGARD
It converts the measurands humidity and temperature into a standard signal of 0 - 10 V or 4...20 mA, and is available with ⁄ without an optional
display. It is equipped with 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. The measuring transducers are designed for exact detection of temperature
and humidity. A digital, long-term stable sensor is used as a measuring element for humidity and temperature measurement.
Fine adjustment by the user is possible.
The ceiling-installed sensor is used in non-aggressive, dust-free environments and is used for installation in suspended ceilings
in corridors, offices, as well as in residential and commercial buildings. The connecting head is pluggable for quick, easy mounting.
The measuring transducer is accommodated in a separate enclosure.

TECHNICAL DATA

Power supply:
Working resistance:
Load resistance:
Power consumption:
Sensors:
HUMIDIT Y
Measuring range, humidity:
Operating range, humidity:
Deviation in humidity:
Output, humidity:
TEMPERATURE
Measuring range,
temperature:
Deviation temperature:
Output, temperature:
Ambient temperature:
Long-term stability:
Enclosure:
Enclosure dimensions:
Cable gland:
Electrical connection:
Connecting cable:
Connecting head:
Mounting (sensor):
Protection class:
Protection type:
Standards:
Optional:
DFF ⁄ DFTF
24 V AC (± 20 %) and 15...36 V DC for U variant
15...36 V DC for I variant, depending on working resistance, residual ripple stabilised ± 0.3 V
R (Ohm) = (U -14 V) ⁄ 0.02 A for I variant
a b
R > 5 kOhm for U variant
L
< 1.1 VA ⁄ 24 V DC; < 2.2 VA ⁄ 24 V AC
digital humidity sensor with integrated temperature sensor,
low hysteresis, high long-term stability
0...100 % r.H. (output corresponding to 0 - 10 V or 4...20 mA)
0..95 % r. H. (without formation of dew)
typically ± 2.0 % (20...80 % r. H.) at +25 °C, otherwise ± 3.0 %
0 - 10 V for U variant
4...20 mA for I variant, see load resistance diagram
multi-range switching with
4 switchable measuring ranges (see table)
–35...+35 °C; –35...+75 °C; 0...+50 °C; 0...+80 °C
(output corresponding to 0 - 10 V or 4...20 mA)
± 0.2 K at +25 °C
0 - 10 V or 4...20 mA
storage –5...+60 °C; operation –5...+60 °C
± 1 % per year
plastic, UV-stabilised, material polyamide, 30 % glass-globe reinforced,
with quick-locking screws (slotted ⁄ Phillips head combination),
colour traffic white (similar to RAL 9016), enclosure cover for display is transparent!
72 x 64 x 37.8 mm (Tyr 1 without display)
72 x 64 x 43.3 mm (Tyr 1 with display)
M 16 x 1.5 ; including strain relief, exchangeable, max. inner diameter 10.4 mm
2-, 3- or 4-wire (see connecting diagram),
0.14 - 1.5 mm², via terminal screws on circuit board
PVC, LiY Y, 4 x 0.14 mm²,
cable length (K L) = approx. 2 m (other lengths optional)
made of plastic, material polycarbonate (PC), colour white, pluggable,
Ø = approx. 35 mm, H = approx. 29 mm, with metal sinter filter made of stainless steel V4A (1.4404)
in the suspended ceiling, ceiling cut-out Ø = 30 mm, cover Ø = < 35 mm
III (according to EN 60 730)
IP 65 (according to EN 60 529) enclosure only!
IP 30 (according to EN 60 529) sensor in the built-in state
CE conformity according to EMC Directive 2014 ⁄ 30 ⁄ EU,
according to EN 61326-1, according to EN 61326-2-3
two-line display with illumination, cutout approx. 36 x 15 mm (W x H),
to display the ACTUAL temperature and ⁄ or ACTUAL humidity
® DFF ⁄ DFTF measures the relative humidity and temperature of air.
Rev. 2018 - V10 GB