Multi-funtional duct sensor
For humidity, temperature, pressure, differential pressure and volume flow for monitoring and controlling heating, ventilation and air-conditioning systemsPREMASGARD® 814x-Modbus
Für jede Anwendung die richtige Lösung [Translate]
The dew point control switch HYGRASREG® TW is installed on cooling or cold-water piping, or on cooled surfaces. It reliably detects formation of condensation by means of its humidity and temperature sensor (no conductivity measurement) and thanks to its patented measuring method, the pro-dynamic cross convention (Patent No. DE 10 2012 015 726.6), an exact measurement result, with/ without optional display.
Dew point temperature is that temperature at which air reaches the state of saturation and water vapour starts to condensate. Facilitated by the measuring range of 0...100 % relative humidity of the TW-U and by the adjustable threshold value of 75...100 % relative humidity of the TW-W, it is possible for example to operate cooling ceilings so that the switching output of the dew point monitor, the DDC, is activated and then triggers a heater or other control elements thereby preventing the formation of dew before dew builds up on pipes or cooling ceilings of the property to be monitored.
|Power consumption||< 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
|Output signal||potential-free changeover contact (24 V), 1 A ohmic load|
|Sensor protection||membrane filter|
formation of dew is detected at
75...100 % r.H. on the TW-W, switching
(switchpoint adjustable by potentiometer,
factory setting 75 % r.H.)
endless metal strap with metal tightener,
300 mm, for pipes up to 3 ''
(included in scope of delivery)
|Electrical connection||0.14 - 1.5 mm² via terminal screws|
material polyamide, 30 % glass-globe reinforced,
with quick-locking screws
(slotted/ Phillips head - combination),
colour traffic white (similar to RAL 9016)
|Housing dimensions||72 x 64 x 37,8 mm (Tyr 1)|
M 16 x 1.5, including strain relief, exchangeable,
max. inner diameter 10.4 mm
TW with strap for direct mounting on pipes
or for direct mounting on flat surfaces
(e.g. walls, ceilings) TW - external with detached sensor head
(cable length KL = 1.5 m) for mounting on pipes
|Protection class||III (according to EN 60 730)|
|Protection type||IP 65 (according to EN 60 529)|
electromagnetic compatibility according to EN 61326,
according to EMC Directive 2014/ 30/ EU
The relay output is triggered (contact 13 -11 closed)
if the pre-set switchpoint (factory setting 75 % r.H.)
is not reached and opens (contact 12 -11 closed)
in the event of an error (power failure, condensation).
LED short pulses =
LED long pulses =
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