Duct humidity and temperature sensors HYGRASGARD® KFTF-20 VA

Measured variables

output

Sensor Tolerance Humidity

Display

output model

Product group: WG02

Duct humidity and temperature sensors HYGRASGARD® KFTF-20 VA

Calibratable HYGRASGARD® KFTF - 20-VA humidity and temperature transmitter (± 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 sensor device measures relative humidity and air temperature and converts these measurand 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 measuring transducer 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.

Available configurations

Artikelnummer	Bezeichung
2003-4161-1100-001	HYGRASGARD® KFTF-20-U VAQ
2003-4161-1200-001	HYGRASGARD® KFTF-20-U VA
2003-4161-2100-001	HYGRASGARD® KFTF-20-I VAQ
2003-4161-2200-001	HYGRASGARD® KFTF-20-I VA
2003-4162-1100-001	HYGRASGARD® KFTF-20-U VAQ LCD
2003-4162-1200-001	HYGRASGARD® KFTF-20-U VA LCD
2003-4162-2100-001	HYGRASGARD® KFTF-20-I VAQ LCD
2003-4162-2200-001	HYGRASGARD® KFTF-20-I VA LCD

Power consumption

< 1.1 VA/ 24 V DC

Data points

temperature [°C], relative humidity [% RH]

Measuring range, humidity

0...100 % RH
(output corresponding to 4...20 mA)

Deviation of humidity

typical ± 1.8 % (10…90 % RH ); at + 25 °C, otherwise ± 2,0 %

Measuring range, temperature

multi-range switching
–35...+35 °C; –35...+75 °C; 0...+50 °C; 0...+80 °C
(output corresponding to 4...20 mA)

Temperature deviation

typically ± 0.2 K at +25 °C

Measuring accuracy

± 1,8 %

Sensor protection

metal sinter filter, Ø 16 mm, L = 32 mm, exchangeable,
stainless steel V4A (1.4404)

Measuring ranges

–35...+35 / –35...+75 / 0...+50 / 0...+80 °C
0...100 % RH

Ambient temperature

storage –35...+85 °C;
operation – 30...+75 °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

Housing

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