Danfoss CF-DS Data sheet

Data Sheet

CF-DS Dew Point Sensor

Application

Ordering

Technical Data

The CF-DS dew point sensor is used in oor
heating/cooling systems to protect against
building of condensation.
The CF-DS is strapped onto the supply pipe and
connected to the Global Standby input on the
CF-MC Master Controller.
CF-DS measures the relative air humidity
compared to the pipe temperature. At 90% RH
the dew point sensor sends a signal to the CF-MC
Master Controller, which closes the cooling
supply pipes.

Product Code no.

CF-DS dew point sensor 088U0251

Humidity sensor HC 105
Working range 10 - 100% RH
Switching point at 20°C / 68°F 90±3% RH
Switching hysteresis 5% RH
Response time, change of surface temperature t90 < 3 min.
Response time, change of relative humidity t90 < 25 sec.
Electrical output potential free relay with changeover contact
Switching capacity max. 24 V AC/DC, 1 A
Supply voltage 24 V AC/DC ± 20%
Current consumption at 24 V DC < 3 mA
Relay status indication LED (red)
Electrical connection 5-pole push-in terminal, max. 1.5 mm²
Dust protection by special coating (permeable for water vapour)
Housing protection class IP40
Housing material PC, re resistant (according to UL94-V0)
Electromagnetic compatibility EN 61326-1, EN 61326-2-3
Working temperature 0 - 50° C (32 - 122° F)
Storage temperature -20 - 70° C (-4 - 158° F)
Size (L x H x W) 63 x 54 x 23 mm
Weight approx. 60 g

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© Danfoss | FHH | 2015.09 | 1

Mounting

max. Ø 50 mm (2“)

24

D

Wiring Connections

+

V+

~

V AC/DC ± 20%

-

GND

~

NC
COM
NO

Status indication:

• LED continuous light: Operating < 90% RH

• LED blinking: Condensation danger

Heat-conductive lm

LE

Danfoss A/S

Floor Heating Hydronics • Ulvehavevej 61 • DK-7100 Vejle • Denmark • Phone: [phone] • Fax: [phone]
[e-mail] • www.oorheating.danfoss.com

Danfoss ca n accept no respons ibility for pos sible errors in ca talogues, bro chures and other pr inted material. Da nfoss reserves t he right to alter its p roducts with out notice. This als o applies to produ cts
already o n order provided t hat such alteratio ns can be made with out subsequenti al changes being n ecessary in spe cications alr eady agreed.
All trade marks in this mate rial are proper ty of the respec tive companies . Danfoss and the Dan foss logotyp e are trademark s of Danfoss A/S. Al l rights reserv ed.

2 | © Danfoss | Danfoss | FHH | 2015.09

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