Duct humidity and temperature sensor HYGRASGARD® KFTF-20-I Q LCD

Item no. 2003-4152-2100-001

EAN 4251325622316

Product group: WG02

Duct humidity and temperature sensor HYGRASGARD® KFTF

Calibratable HYGRASGARD® KFF - SD / KFTF - SD duct humidity/temperature transmitters (± 2,0%), with plastic sinter filter (metal sinter filter optional), housing made of impact resistant plastic with snap-on cover, with cable gland (or optional M12 connector according to DIN EN 61076-2-101).

Calibratable HYGRASGARD® KFF / KFTF or KFF - 20 / KFTF - 20 duct humidity/temperature transmitters (±2,0% or ±1,8%, respectively) with plastic sinter filter (metal sinter filter optional), housing made of impact resistant plastic with quick-locking screws, optionally with/without display, with cable gland (or optional M12 connector according to DIN EN 61076-2-101).

The sensor devices measure relative humidity and/or air temperature and convert the measurands into a standard signal of 0-10 V or 4...20 mA. They support four switchable temperature ranges and are applied in non-aggressive dust-free atmospheres in refrigeration, air conditioning, ventilation and cleanroom engineering. These measuring transducers provide 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.

Voltage supply

15...36 V DC
depending on working resistance, residual ripple stabilised ± 0.3 V

Power consumption

< 1.1 VA/ 24 V DC ; < 2.2 VA/ 24 V AC

Data points

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

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)

Deviation of humidity

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

Output, humidity

4...20 mA

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)

Output, temperature

4...20 mA

Measuring accuracy

typically ± 0.2 K at +25 °C

Sensor protection

plastic sinter filter, Ø 16 mm, L = 35 mm, exchangeable
(optional metal sinter filter, Ø 16 mm, L = 32 mm)

Measuring ranges

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

Accuracy

typical ± 1,8 % RH (10…90 % RH ); at + 25 °C, otherwise ± 2 %

Ambient temperature

storage –35...+85 °C;
operation – 30...+75 °C, non-precipitating

Process connection

by mounting flange, plastic
(included in the scope of delivery)

Protective tube

PLEUROFORM, material polyamide (PA6), with torsion protection,
Ø 20 mm, NL = 235 mm (optionally 100 mm), vmax = 30 m/s (air)
(option on request in stainless steel V2A (1.4301), Ø 16mm)

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 cover for display is transparent !

Housing dimensions

126 x 90 x 50 mm (Tyr 2)

Cable gland

M 16 x 1.5, including strain relief, exchangeable,
max. inner diameter 10.4 mm

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.713139052 (Tyr 1)