Technical Data - S+S Regeltechnik HYGRASGARD KFF 20 Notice D'instruction

G
®
HYGRASGARD KFF - 20 ⁄ KFTF - 20, AFF - 20 ⁄ AFTF - 20, AFF - 25 ⁄ AFTF - 25
Quality product for HVAC sector, accuracy 2 % r. H.
The calibrateable outdoor ⁄ duct humidity ⁄ temperature sensor HYGRASGARD
is a sturdy industry version, equipped with metal sinter filter measuring the relative humidity and ⁄ or temperature of air. The humidity
transmitter converts the measurands into standard signals of 0 - 10 V or 4...20 mA and is optional available with or without display. Termi-
nal box enclosure made of impact-resistant plastic with enclosure cover with quick-locking screws. It has four switchable temperature
ranges and is applied in non-aggressive dust-free ambiences in refrigeration, air conditioning, ventilation and clean room technology, in air
and air conditioning ducts, in humidi fication and dehumidification of industrial halls, residential rooms, offices, hotels, technical rooms,
meeting rooms and convention centres. Relative humidity (in % r. H.) is the quotient of water vapour partial pressure divided by the satura-
tion vapour pressure at the respective gas temperature. These measuring transducers are designed for exact detection of humidity.
A digital long-term stable sensor is used as measuring element for humidity measurement. Fine adjustment by the user is possible. Mount-
ing flange is included in the scope of delivery.
TECHNICAL DATA:
Power supply: .............................. 24 V AC (± 20 %) and 15 ... 36 V DC (± 10 %) for U variant
Power consumption: .................. < 1.1 VA ⁄ 24 V DC ; < 2.2 VA ⁄ 24 V AC
Sensors: ....................................... digital humidity sensor with integrated temperature sensor,
Sensor protection: ..................... metal sinter filter, exchangeable
HUMIDITY:
Measuring range, humidity: ...... 0 ...100 % r. H.
Operating range, humidity: ....... 0 ... 95 % r. H. (without formation of dew)
Deviation, humidity: .................... ± 2 % r. H. (20 ... 90 %) at + 20 °C, otherwise ± 3 % r. H.
Output, humidity: ........................ 0 -10 V at U variant
TEMPERATURE:
Measuring range, temperature: .. multi-range switching (see table)
Operating range, temperature: ... - 35 ...+80 °C
Deviation, temperature: ............ ± 0.3 K at 20 °C
Output, temperature: ................ 0 -10 V or 4 ... 20 mA
Ambient temperature: .............. storage - 25 ...+ 50 °C, operation - 5 ...+ 55 °C
Electrical connection: ................ 2-, 3-, or 4-wire connection (see connecting diagram),
Enclosure: .................................... plastic, material polyamide,
Dimensions: ................................. KFF - 20 ⁄ KFTF - 20:
Cable gland: ................................. M16, including strain relief
Protective tube: .......................... stainless steel, Ø 18 mm,
Process connection: .................. KFF - 20 ⁄ KFTF - 20: by mounting flange, plastic
Long-term stability: .................... ± 1 % per year
Protection class: ........................ III (according to EN 60 730)
Protection type:.......................... IP 65 (according to EN 60 529)
Standards: ................................... CE conformity,
Optional: ....................................... two-line display with illumination, 36 x15 mm (W x H),
15 ... 36 V DC (± 10 %) for I variant (depending on working resistance)
dew-proof, small hysteresis, high long-term stability,
AFF - 25 ⁄ AFTF - 25: sensor head pluggable
(output corresponding to 0 -10 V or 4 ... 20 mA)
4 ... 20 mA at I variant, working resistance < 800 Ω,
see load resistance diagram
- 35 ...+35 °C; - 35 ...+75 °C; 0 ...+50 °C; 0 ...+80 °C
(output corresponding to 0 -10 V or 4 ... 20 mA)
0.14 - 1.5 mm², via terminal screws on circuit board
30 % glass-globe-reinforced,
with quick-locking screws,
colour pure white (similar RAL 9010)
72 x 64 x 39.4 mm
AFF - 20 ⁄ AFTF - 20: 108 x 70 x 73.5 mm
AFF - 25 ⁄ AFTF - 25: 108 x 70 x 73.5 mm
KFF - 20 ⁄ KFTF - 20: nominal length NL = 225 mm, Ø 18 mm
AFF - 20 ⁄ AFTF - 20: nominal length NL = 45 mm, Ø 18 mm
AFF - 25 ⁄ AFTF - 25: nominal length NL = 95 mm, Ø 18 mm,
measuring head exchangeable and screwed in place
(included in the scope of delivery) (galvanised steel optional)
AFF - 20 ⁄ AFTF - 20: by screws
according to EMC directive 2004 ⁄ 108 ⁄ EC,
according to EN 61326-1: 2006,
according to EN 61326-2-3: 2006
for displaying ACTUAL temperature and ⁄ or ACTUAL humidity
®
KFF - 20 ⁄ KFTF - 20, AFF - 20 ⁄ AFTF - 20, AFF - 25 ⁄ AFTF - 25