Duct humidity sensor HYGRASGARD® KFF-I LCD

Measured variables

output

Display

Protection type

output model

Item no. 1201-3112-0200-029

EAN 4251325610405

Product group: WG01

Duct humidity and temperature sensor HYGRASGARD® KFF

Calibratable HYGR ASGARD® 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, enclosure cover with quick-locking screws, with/without optional display

The sensor devices measure relative humidity and/or air temperature and convert the measurand into a standard signal of 0-10 V or 4...20 mA. The support four switchable temperature ranges and are applied in non-aggressive dust-free atmospheres in refrigeration, air conditioning, ventilation and cleanroom engineering. Relative humidity (in % r.H.) is the quotient of water vapour partial pressure divided by the saturation vapour pressure at the respective gas temperature. 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

Relative humidity [% RH]

Working resistance

Ra (ohm) = (Ub -14 V)/ 0.02 A for I variant

Measuring range, humidity

0...100 % RH

Deviation of humidity

typical ± 2 % RH (20…80 % RH ); at + 77 °F, otherwise ± 3 %

Output, humidity

4...20 mA

Sensor protection

plastic sinter filter, Ø 0.63 in, L = 1.38 in, exchangeable
(optional metal sinter filter, Ø 0.63 in, L = 1.26 in)

Measuring range

0...100 % RH

Process connection

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

Protective tube

PLEUROFORM, material polyamide (PA6), with torsion protection,
Ø 0.79 in, NL = 9.3 in (optionally 3.9 in), vmax = 98.4 ft/s (air)
(option on request in stainless steel V2A (1.4301), Ø 0.63 in)

Electrical connection

2-, 3- or 4-wire connection
AWG 26 - 16 via terminal screws on circuit board

Cable connection

cable gland, plastic (M 16 x 1.5; with strain relief, exchangeable, max. inner diameter 0.4 in) 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

72 x 64 x 43.3 mm (Tyr 1 with Display)

Cable gland

M 16 x 1.5, including strain relief, exchangeable,
max. inner diameter 0.4 in

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)