Technical Data - S+S Regeltechnik AFTF-20-VA Operating Instructions, Mounting & Installation

G
®
HYGRASGARD
Calibratable outdoor humidity and temperature sensor HYGRASGARD
steel V4A, optionally with ⁄ without display, with cable gland or M12 connector according to DIN EN 61076-2-101.
It measures the relative humidity and the temperature of the air and converts the measurand into a standard signal of 0 - 10 V or 4...20 mA. It has
four switchable temperature ranges and is applied in non-aggressive dust-free atmospheres in refrigeration, air conditioning, ventilation and clean
room technology. These measuring transducers are designed for exact detection of humidity. A digital long-term stable sensor is used as measuring
element for humidity measurement. The sensor is factory-calibrated; an environmental precision adjustment by an expert is possible.

TECHNICAL DATA

Power supply:
Working resistance:
Load resistance:
Power consumption:
Sensors:
HUMIDIT Y
Measuring range, humidity:
Permitted humidity:
Deviation in humidity:
Output humidity:
TEMPERATURE
Measuring range, temperature: multi-range switching (see table)
Ambient temperature:
Deviation, temperature:
Output, temperature:
Electrical connection:
Cable connection:
Housing:
Housing dimensions:
Protective tube:
Sensor protection:
Process connection:
Long-term stability:
Protection class:
Protection type:
Standards:
Optional:
ACCESSORIES
AFTF - 20 - VA
24 V AC (± 20 %); 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, see load resistance diagram
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.
< 95 % r. H., non-precipitating air
typically ± 1.8 % (10...90 % r. H.) at +25 °C, otherwise ± 2.0 %
0 - 10 V for U variant
4...20 mA for I variant
–35...+35 °C; –35...+75 °C; 0...+50 °C; 0...+80 °C
storage –35...+85 °C; operation – 30...+80 °C, non-precipitating
typically ± 0.2 K at +25 °C
0 - 10 V for U variant
4...20 mA for I variant
2-, 3-, or 4-wire connection (see connecting diagram),
0.14 - 1.5 mm², via terminal screws
cable gland, stainless steel V2A (1.4305)
(M 20 x 1.5; with strain relief, exchangeable,
inner diameter 6 - 12 mm) or
M12 connector (male, 5-pin, A-code)
according to DIN EN 61076-2-101
stainless steel V4A (1.4571),
with non-distortion cover bolting,
impact resistant, high EMI shielding,
corrosion, temperature, weather- and UV-resistant
143 x 97 x 61 mm (Tyr 2E)
made from stainless steel V2A (1.4301), Ø 16 mm, NL = 137 mm
metal sinter filter, Ø 16 mm, L = 32 mm, exchangeable,
stainless steel V4A (1.4404)
by screws
via the mounting fixture on the housing
± 1 % per year
III (according to EN 60 730)
IP 65 (according to EN 60 529)
Housing tested, TÜV SÜD, Report No. 713160960B (Skadi2)
CE conformity according to EMC Directive 2014 ⁄ 30 ⁄ EU, according to EN 61326-1, according to EN 61326-2-3
display with illumination, three-line, cutout approx. 70 x 40 mm (W x H),
to display the ACTUAL temperature and ACTUAL humidity
(see table)
® AFTF - 20-VA (± 1.8 %) with metal sinter filter, rugged housing, stainless
8
Rev. 2021 - V13