WFRRN-240.018
Dew point monitor, 24V AC/V DC, two-way contact
Electronic dew point monitor with standard rail mounting for detecting and reporting the dew point. If the dew point sensor (TPS 1, 2, 3) is installed correctly, it prevents condensation from dripping from the cooled parts of the cooling circuit. For this purpose, a dew point sensor located at a suitable point on the cooling circuit is evaluated and a potential-free changeover contact is switched over in the event of condensation. This contact can be used for direct interruption of the cooling or for indirect interruption of the cooling by signaling to a building management system. If the optimal installation location cannot be clearly determined, it is possible to connect up to 5 dew point sensors in parallel to the controller. The activated function "Cooling interruption by dew point triggering" is indicated by a red lamp on the unit. The switching point is fixed at approx. 98% RH.
Art.-Nr.: D4780587
Technical data
| Ambient temperature, lower value | 0 °C |
| Ambient temperature, upper value | 55 °C |
| Bearing temperature, lower value | -20 °C |
| Bearing temperature, upper value | 70 °C |
| Colour | Light grey |
| Depth | 59 mm |
| Electric connection | Screw terminals |
| Height | 86 mm |
| Housing material | Plastic PC |
| Maximum air humidity (non-condensing) | 95 % r.H |
| Maximum switching current | 10 (3) A 48VAC, 10 A 30VDC, 1 A 60VDC |
| Maximum switching voltage | 48 V AC , 50 Hz/ 60 V DC |
| Medium | Air, not aggressive |
| Minimum switching current | Depending on switch. voltage (min. 0.3 W) |
| Minimum switching voltage | Depending on switch. current (min. 0.3 W) |
| Mounting / attachment | On supporting rails (35 mm), EN 60715 |
| Number of outputs | 2 |
| Operating voltage | 24 V AC / 50 Hz, 24 V DC |
| Output signal | Switching (24 V AC, 50 Hz and/or 24 V DC) |
| Potential free switching contact | Yes |
| Protection class | III |
| RAL colour number (similar) | 7035 |
| Safety and EMC | In accordance with DIN EN 60730 |
| Setting range, rel. air humidity lower value | 98 % |
| Setting range, rel. air humidity upper value | 98 % |
| Surface properties | Matt |
| Switching contact | Two-way contact |
| Switching difference, can be adjusted | No |
| Switching element | Relay |
| Type of protection | IP20 |
| Width | 36 mm |
| With explosion protection | No |
| Photo | Type | Articlenumber | Features | Kind |
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