Kampmann KaDeck, Assembly, Installation And Operating Instructions

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KaDeck
Assembly, installation and operating instructions
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6.5.8 Dewpoint monitor
A dewpoint monitor can optionally be fitted with dry cooling units. It measures the relative humidity directly on the surface of
the cooled part of the system and so can prevent further condensate formation should the temperature fall below the dew-
point.
Fig. 27: Dewpoint monitor (installed)
Use cable ties to fasten the dewpoint monitor to the cooling water pipe.
Arrange the connection cable in such a way that no condensate can run along the cable.
Avoid water being allowed to collect in the sensor.
Pay attention to minimal heat transfer resistance.
Connect the dewpoint monitor according to the wiring diagram.
Caution: Preferably rest the sensor element on the cooling water pipework. The opposite side may project out.
Technical data for dewpoint monitor
Supply voltage: 15…30 V DC / 24 V AC
Protection class: IP 65
Operating temperature range -20 … +70 °C
Switching point at:
90% relative humidity ± 2% relative humidity
Hysteresis 3% relative humidity
Switching output: Potential-free changeover contact
Switching voltage Max. 48 V
Switching current Max. 0.5 A
Switching power Max. 10 W
Assignment:
Supply
Brown – (~)
Green + (~)
Relay output
Blue N/O
Pink N/C
Grey COMMON