S+S REGELTECHNIK HYGRASREG KW Bedienungs- Und Montageanleitung Seite 7

G
®
HYGRASREG TW
The dew point control switch HYGRASGARD
coldwater piping or on cooled surfaces. It can be used as moisture sensor,
dew point sensor, dew point detector, or limit value switch on pipes. Dew
point temperature is that temperature at which air reaches the state of
saturation and water starts to pre ci pitate. Because of the continuous meas-
uring range of 0...100 % r.H. at the TW-U variant and the adjustable limit
value of 80...100 % r.H. at the TW-W variant, cooling ceilings for example can
be operated so that generation of dew on pipes or cooling ceilings or other
parts of the object to be monitored is prevented by activating the switching
output of the dew point control switch, the DDC, and thus, a heating system
or other actuators are activated, preventing the generation of dew. Moisture
is detected by a digital long-term stable humidity ⁄ temperature sensor.
TECHNICAL DATA:
Power supply: .............................. 24 V AC ⁄ DC
Measuring Range: ...................... 0 ...100 % r. H., TW-U, continuous
Internal current consumption: .... 5 mA, with relay max. 20 mA
Sensors: ....................................... digital humidity sensor
Sensor protection: ..................... membrane filter
Output signal: .............................. 0 -10 V or potential-free
Process connection: .................. endless metal strap with metal tightener,
Electrical connection: ................ 0.14 - 1.5 mm², via terminal screws
Enclosure: .................................... plastic, material polyamide,
Dimensions: ................................. 72 x 64 x 39.4 mm
Cable gland: ................................. M16, including strain relief
Protection class: ........................ III (according to EN 60 730)
Protection type:.......................... IP 65 (according to EN 60 529)
Standards: ................................... CE conformity,
Type ⁄ WG1
TW- U
TW- W
® TW is installed on cooling or
80 ...100 % r. H., TW-W, adjustable,
generation of dew is detected,
switching value can be adjusted
via potentiometer
with integrated temperature sensor,
dew-proof, small hysteresis,
high long-term stability
changeover contact (24 V)
300 mm, for pipes up to 3 " diameter
(included in the scope of delivery)
30 % glass-globe-reinforced,
with quick-locking screws,
colour pure white (similar RAL 9010)
electromagnetic compatibility
according to EN 61 326 + A1 + A2,
EMC directive 2004 ⁄ 108 ⁄ EC
Measuring Range
Humidity (relative)
0 ...100 % r. H.
80 ...100 % r. H.
Schematic diagram
max.
100%
1 2
Connecting diagram
UB- GND
1
2 UB+ supply voltage 24V AC/DC
Normally open
7
contact
8
Breaker
9
Schematic diagram
1 2 4
Connecting diagram
1 UB- GND
2 UB+ supply voltage 24V AC/DC
4
Output bedewing 0-10V (continuous)
Output
Humidity (relative)
0 -10 V
Changeover contact
TW - W
Switchpoint
min.
setting
80%
80% - 100% r.H.
7 8 9
TW - W
TW - U
TW - U