Technical Data - S+S Regeltechnik HYGRASGARD KFF Series Operating Instructions, Mounting & Installation

G
®
HYGRASGARD
Quality product for HVAC sector, accuracy ± 2 % or ± 3 %
Calibratable duct humidity ⁄ temperature sensors HYGRASGARD
(optional metal sinter filter), terminal box enclosure made of impact-resistant plastic, enclosure cover with quick-locking screws, with ⁄ without
optional display. It measures the relative humidity and ⁄ or the temperature of the air and converts the measurands into a standard signal of 0 - 10 V
or 4...20 mA. It has four switchable temperature ranges and is applied in non-aggressive dust-free atmospheres in refrigeration, air conditioning,
ventilation and clean room technology. 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 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.

TECHNICAL DATA

Power supply:
Power consumption:
Sensors:
Sensor protection:
HUMIDIT Y:
Measuring range, humidity:
Operating range, humidity:
Deviation, humidity:
Output, humidity:
TEMPERATURE:
Measuring range, temperature: multi-range switching with 4 switchable measuring ranges (see table)
Operating range, temperature: –35...+80 °C
Deviation, temperature:
Output, temperature:
Ambient temperature:
Electrical connection:
Enclosure:
Enclosure dimensions:
Cable gland:
Protective tube:
Process connection:
Long-term stability:
Humidity:
Protection class:
Protection type:
Standards:
Optional:
KFF ⁄ KFTF (± 3 %), KFF - 20 ⁄ KFTF - 20 (± 2 %)
24 V AC (± 20 %) and 15...36 V DC (± 10 %) for U variant
15...36 V DC (± 10 %) for I variant (depending on working resistance)
< 1.1 VA ⁄ 24 V DC ; < 2.2 VA ⁄ 24 V AC
digital humidity sensor with integrated temperature sensor,
low hysteresis, high long-term stability
plastic sinter filter, Ø 16 mm, L = 35 mm, exchangeable
(optional metal sinter filter, Ø 16 mm, L = 32 mm)
0...100 % r. H. (output corresponding to 0 -10 V or 4...20 mA)
0...95 % r. H. (non-precipitating air)
KFF ⁄ KFTF: ± 3 % r. H. (20...80 %) at +20 °C, otherwise ± 5 % r. H.
KFF - 20 ⁄ KFTF - 20: ± 2 % r. H. (20...90 %) at +20 °C, otherwise ± 3 % r. H.
0 -10 V at U variant
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)
KFF ⁄ KFTF: ± 0.8 K at +20 °C, depending on installation location and position
KFF - 20 ⁄ KFTF - 20: ± 0.5 K at +20 °C
0 -10 V or 4 ... 20 mA or Ohm value
storage –35...+85 °C; operation – 30...+75 °C, non-precipitating
2-, 3-, or 4-wire connection (see connecting diagram),
0.14 - 1.5 mm², via terminal screws on circuit board
plastic, material polyamide, 30 % glass-globe-reinforced,
with quick-locking screws (slotted ⁄ Phillips head combination),
colour traffic white (similar to RAL 9016) enclosure cover for display is transparent!
KFF ⁄ KFTF ⁄ KFF - 20 ⁄ KFTF - 20 without display:
72 x 64 x 37.8 mm (Tyr 1)
KFF ⁄ KFTF with display:
72 x 64 x 43.3 mm (Tyr 1)
KFF - 20 ⁄ KFTF - 20 with display:
26 x 90 x 50 mm (Tyr 2)
M 16 x 1.5, including strain relief, exchangeable, max. inner diameter 10.4 mm
TM
PLEUROFORM , material polyamide (PA6), Ø 20 mm, NL = 235 mm, with torsion protection
(on request, optional stainless steel, Ø 16 mm)
by mounting flange, plastic (included in the scope of delivery)
± 1 % per year
< 95 % r. H., non-precipitating air
III (according to EN 60 730)
IP 65 (according to EN 60 529) enclosure only!
CE conformity, according to EMC directive 2004 ⁄ 108 ⁄ EC, according to EN 61326-1, according to EN 61326-2-3
display with iillumination, for displaying ACTUAL temperature and ⁄ or ACTUAL humidity
KFF ⁄ KFTF (Tyr 1): two-line, cutout approx. 36 x15 mm (W x H)
KFF - 20 ⁄ KFTF - 20 (Tyr 2): three-line, cutout approx. 70 x 40 mm (W x H)
® KFF ⁄ KFTF (± 3 % ) or KFF - 20 ⁄ KFTF - 20 (± 2 %), with
10
Rev. 2016 - V22 GB
plastic sinter filter