DFTF-U

HYGRASGARD® DFTF-U

Item No. 1201-6131-1000-100
EAN 4 251325 616544

The calibratable humidity and temperature sensor HYGRASGARD® DFTF 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 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. The sensor is factory-calibrated; an environmental precision adjustment by an expert 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 housing.

303,40 € net
Voltage supply 24 V AC (± 20 %) and
15…36 V DC
Power consumption < 1.1 VA/ 24 V DC ; < 2.2 VA/ 24 V AC
Load resistance RL > 5 kOhm
Sensors digital humidity sensor
with integrated temperature sensor,

low hysteresis, high long-term stability
Measuring range, humidity 0...100 % r. H.
(output corresponding to 0 -10 V)
Operating range, humidity 0...95 % r. H. (without dew formation)
Deviation of humidity typical ± 2.0 % r. H. (20…80 % r. H. ); at + 25 °C, otherwise ± 3.0 % r. H.
Output, humidity 0 - 10 V
Measuring range, temperature multi-range switching
with 4 switchable measuring ranges

–35...+35 °C; –35...+75 °C; 0...+50 °C; 0...+80 °C
(output corresponding to 0 -10 V or 4...20 mA)
Temperature deviation typically ± 0.2 K at +25 °C
Output 0 - 10 V
Ambient temperature storage –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
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)
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 dimensions 72 x 64 x 37,8 mm (Tyr 1)
Cable gland M 16 x 1.5, including strain relief, exchangeable,
max. inner diameter 10.4 mm
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)
Connection cable PVC, LiYY, 4 x 0.14 mm²,
KL = approx. 2 m
Long-term stability ± 1 %/ year
Mounting (sensor) inside suspended ceiling,
ceiling cutout Ø = 30 mm,
cover Ø = < 35 mm
Protection class III (according to EN 60 730)
Protection type IP 67 (according EN 60 529) Housing tested
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