On-wall humidity sensor / outdoor humidity sensor AFTF-20 VA
temperature Temperature
temperature Luftfeuchtigkeit

On-wall humidity sensor / outdoor humidity sensor HYGRASGARD® AFTF-20 VA

Product group: WG02I

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642,54 €
764,62 € incl. VAT + shipping


On-wall humidity sensor / outdoor humidity sensor HYGRASGARD® AFTF-20 VA
Calibratable HYGRASGARD® AFTF - 20-VA outside humidity and temperature measuring transducer (± 1.8%) with metal sinter filter, rugged housing in V4A stainless steel, optionally with/without display, with cable gland or M12 connector according to DIN EN 61076-2-101.
The device measures the relative humidity and the temperature of the air and converts these measurands into a standard signal of 0-10 V or 4...20 mA. It supports four switchable temperature ranges and is applied in non-aggressive dust-free atmospheres in refrigeration, air conditioning, ventilation and cleanroom engineering. The sensor device provides precise detection of humidity. A digital long-term stable sensor is used as measuring element for humidity. The sensor is factory-calibrated and can be fine-tuned to ambient conditions by an expert.

Technical details

Measuring accuracy
± 1,8 %
Ambient temperature
storage –35...+85 °C; operation – 30...+80 °C, non-precipitating
Process connection
by screws via the mounting fixture on the housing
Protective tube
stainless steel V2A (1.4301), Ø 16 mm
NL = 137 mm
Electrical connection
2-, 3- or 4-wire connection
0.14 -1.5 mm ² via terminal screws on circuit board
stainless steel V4A (1.4571),
with non-distortion cover bolting,
impact-resistant, high EMI shielding,
corrosion, temperature, UV and weathering resistant
Housing dimensions
143 x 97 x 61 mm (Tyr 2E)
Long-term stability
± 1 % per year
Permissible air humidity
< 95 % RH, non-precipitating air
Protection class
III (according to EN 60 730)
Protection type
IP 65 (according to EN 60 529)
Housing tested, TÜV SÜD, Report No. 713160960B (Skadi2)
Protection type housing
IP 65
CE conformity,
according to EMC directive 2014/ 30/ EU,
according to EN 61326-1, according to EN 61326-2-3