Technical Data - S+S Regeltechnik HYGRASREG КН-30 Operating Instructions Manual

G
®
HYGRASREG KH - 30
Electronic duct hygrostats and humidity sensors HYGRASREG
two switching outputs, adjustable switching thresholds, optional with or without display for displaying
ACTUAL humidity (accuracy class ± 3 % r.H.) and for setting the target humidity.
They are used to control and monitor the relative humidity, e.g. in ventilation and air conditioning
ducts, laboratories, production facilities, climatic test cabinets, indoor swimming pools, green houses,
etc. to control humidifying and dehumidifying equipment. These measuring transducers are designed
for exact humidity measurement. KH-30 uses a digital long-term stable sensor as a measuring
element for humidity measurement. Applications in dust-free, pollutant-free, non-aggressive air.

TECHNICAL DATA

Power supply: 24 V AC ⁄ DC (± 20 %)
Power consumption: < 1.1 VA ⁄ 24 V DC ; < 2.2 VA ⁄ 24 V AC
digital humidity sensor, low hysteresis, high long-term stability
Sensors:
Sensor protection: plastic sinter filter, Ø 16 mm, L = 35 mm, exchangeable
(optional metal sinter filter, Ø 16 mm, L = 32 mm)
Setting range: 5...95 % r. H. (switch steps 1 and 2 are separately adjustable)
Switching capacity: 1 A at 24 V ohmic load
Operating difference: Mode 1: both switch steps are freely adjustable
Mode 2: 5 % between both switch steps
(adjustable via DiP switches)
Output: potential-free changeover contacts
(2 x changeover contact 24 V, separately adjustable,
1x 0 - 10 V for U-variant or 4...20 mA for I-variant ^ = 0 - 100 % r. H.)
Deviation, humidity: ± 3 % r. H. (20...80 %); at + 20 °C, otherwise ± 5 % r. H.
Ambient temperature: storage –35...+85 °C; operation – 30...+75 °C, non-precipitating
Long-term stability: ± 1 % per year
Enclosure: 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!
Enclosure 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
Protective tube: PLEUROFORM
Ø 20 mm, NL = 235 mm, with torsion protection
Protection class: III (according to EN 60 730)
Protection type: IP 65 (according to EN 60 529) enclosure only!
Electrical connection: 0.14 - 1.5 mm
Standards: CE conformity, EMC directive 2004 ⁄ 108 ⁄ EC
three-line display with illumination, cutout approx. 70 x 40 mm (W x H),
Display:
for displaying ACTUAL humidity respectively for humidity setpoint adjustment
F UN C T I O N
Humidifying: 1st step: wire contacts 11 - 12. When actual humidity falls more than 3 % r. H. (hysteresis) below switching threshold S1,
changeover contact switches to 11 - 12.
2nd step: wire contacts 21 - 22. When actual humidity falls more than 3 % r. H. (hysteresis) below switching threshold S 2,
changeover contact switches to 21 - 22. Terminal 2: Output Humidity ^ = 0 - 100 % r. H.
Dehumidifying: 1st step: wire contacts 11 - 13. When actual humidity exceeds switching threshold S 1,
changeover contact switches to 11 - 13.
2nd step: wire contacts 21 - 23. When actual humidity exceeds switching threshold S 2,
changeover contact switches to 21 - 23. Terminal 2: Output Humidity ^ = 0 - 100 % r. H.
HYGRASREG ® KH - 30 – Duct hygrostats and humidity sensors (± 3 %), Deluxe
Type ⁄ WG02
KH - 30 - I
K H - 3 0 W- I T Y R - 2 D I S P L AY
KH - 30 - U
K H - 3 0 W- U T Y R - 2 D I S P L AY
Accessories
SF-M Metal sinter filter, Ø 16 mm, L = 32 mm, exchangeable
stainless steel (VA 1.4404)
TM
, material polyamide (PA6),
2 , via terminal screws
Setting Range Output
Humidity
5...95 % r. H. 2 x Changeover contact, 1x 4...20 mA
5...95 % r. H. 2 x Changeover contact, 1x 0 -10 V
® KH-30 with one continuous and
Steps Display
two-step
two-step
Rev. 2016 - V23 GB
Connecting diagram
1 +UB 24V AC/DC
2 Output humidity 0 -10 V
in % r.H.
3 n.c.
4 –UB GND
Humidifying
12
Relay 1
11
Dehumidifying
13
Humidifying
22
Relay 2
21
Dehumidifying
23
Potential-free
changeover contact 24V
Connecting diagram
+UB 24V AC/DC
1
Output humidity 4...20mA
2
in % r.H.
3 n.c.
4 –UB GND
Humidifying
12
Relay 1
11
Dehumidifying
13
Humidifying
22
Relay 2
21
Dehumidifying
23
Potential-free
changeover contact 24V
Item No.
I - variant
■ 1202-81 17-2421-000
U - variant
■ 1202-81 17-1421-000
7000-0050-2200-100
KH - 30 - U
KH - 30 - I