- % SALE %
- Temperature
- Humidity
- Pressure
- Light Intensity & Motion
- Air Quality & Flow
- Modbus | Wireless Modbus
- PowerIO®
- EtherCAT P
- Accessory
Description
Ceiling built-in humidity sensors
HYGRASGARD® DFF
The calibratable HYGRASGARD® DFF / DFTF humidity and temperature transmitter measures the relative humidity and temperature of air. It converts the measurands into a standard signal of 0-10 V or 4...20 mA, and is available with/without optional display.
The measuring transducer supports 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 sensor device provides precise detection of temperature and humidity. A digital, long-term stable sensor is used as a measuring element for humidity and temperature. The sensor is factory-calibrated and can be fine-tuned to ambient conditions by an expert.
The measuring transducer supports 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 sensor device provides precise detection of temperature and humidity. A digital, long-term stable sensor is used as a measuring element for humidity and temperature. The sensor is factory-calibrated and can be fine-tuned to ambient conditions by an expert.
The sensor has been designed for use in non-aggressive, dust-free environments and can be installed in suspended ceilings of corridors, offices, as well as residential and commercial buildings. The connecting head is pluggable for quick, easy mounting. The measuring transducer is accommodated in a separate housing.
Technical details
Power consumption
< 1.1 VA/ 24 V DC ; < 2.2 VA/ 24 V AC
Voltage supply
15...36 V DC
depending on working resistance, residual ripple stabilised ± 0.3 V
depending on working resistance, residual ripple stabilised ± 0.3 V
Operating range, humidity
0...95 % RH (without dew formation)
Deviation of humidity
typical ± 2.0 % (20…80 % RH); at + 25 °C, otherwise ± 3.0 %
Working resistance
Ra (ohm) = (Ub -14 V)/ 0.02 A for I variant
Measuring range, humidity
0...100 % RH
(output corresponding to 4...20 mA)
(output corresponding to 4...20 mA)
Output, humidity
4...20 mA
Ambient temperature
storage –5...+60 °C
operation –5...+60 °C
operation –5...+60 °C
Electrical connection
2-, 3- or 4-wire connection
0.14 -1.5 mm ² via terminal screws on circuit board
0.14 -1.5 mm ² via terminal screws on circuit board
Cable gland
M 16 x 1.5, including strain relief, exchangeable,
max. inner diameter 10.4 mm
max. inner diameter 10.4 mm
sensor cable
PVC, LiYY, 4 x 0.14 mm²,
KL = approx. 2 m
KL = approx. 2 m
Long-term stability
± 1 % per year
Mounting (sensor)
inside suspended ceiling,
ceiling cutout Ø = 30 mm,
cover Ø = < 35 mm
ceiling cutout Ø = 30 mm,
cover Ø = < 35 mm
Protection class
III (according to EN 60 730)
Cable connection
cable gland, plastic (M 16 x 1.5; with strain relief, exchangeable, max. inner diameter 10.4 mm) or
M12 connector according to DIN EN 61076-2-101 (optional on request)
M12 connector according to DIN EN 61076-2-101 (optional on request)
Housing
plastic, UV-stabilised,
material polyamide, 30 % glass-globe reinforced,
with quick-locking screws
(slotted/ Phillips head - combination),
colour traffic white (similar to RAL 9016),
housing cover for display is transparent !
material polyamide, 30 % glass-globe reinforced,
with quick-locking screws
(slotted/ Phillips head - combination),
colour traffic white (similar to RAL 9016),
housing cover for display is transparent !
Housing dimensions
72 x 64 x 43.3 mm (Tyr 1 with Display)
Connecting head
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)
pluggable, Ø = approx. 35 mm, H = approx. 29 mm,
with metal sinter filter made of stainless steel V4A (1.4404)
Protection type
IP 65 (according EN 60 529) Housing tested
TÜV SÜD, Report No. 713139052
IP 30 (according EN 60 529) Sensor in the built-in state
TÜV SÜD, Report No. 713139052
IP 30 (according EN 60 529) Sensor in the built-in state
Standards
CE conformity,
according to EMC directive 2014/ 30/ EU,
according to EN 61326-1, according to EN 61326-2-3
according to EMC directive 2014/ 30/ EU,
according to EN 61326-1, according to EN 61326-2-3
Display
two-line display with illumination, 36 x15 mm (W x H),
for displaying ACTUAL temperature and/ or ACTUAL humidity
for displaying ACTUAL temperature and/ or ACTUAL humidity