NKH
Duct hygrostat, single-stage
Application
The NKH is a duct hygrostat for controlling and monitoring the relative humidity in ventilation and air-conditioning ducts, climatic cabinets, swimming pools, greenhouses, etc., for controlling humidification and dehumidification equipment. Not suitable for aggressive gases.
Technical Data
| Contact voltage: | 15 (8) A; 24...250V AC |
| Adjustable range: | 35...100% r.H. |
| Contact: | dust-encapsulated microswitch as single-pin potential-free changeover switch (changeover contact) |
| Switching differential: | max. 4% rH. |
| Housing: | Material ABS (acrylonitrile butadiene styrene) glass fibre reinforced, Bottom part: Colour grey (similar to RAL 7038) Top part: Colour white (similar to RAL 9016) |
| Housing temperature: | -10°C...+65°C |
| Electrical connection: | 0.14 - 1.5 mm² via screw terminals Flow velocity: max. 8 m/s |
| Humidity: | < 95 % rH, non-condensing air |
| Sensor sleeve: | Nickel-plated brass, fitting length L = 220 mm |
| Protection class: | I (according to EN 60 730) |
| Protection type: | IP65 (acc. to IEC 529) |
| Funktion: | |
| Humidify: | 1 Level: Wire contacts 1 and 4. The switch points ON/OFF are approx. 2.5 % rH. above and below the selected value. |
| Dehumidify: | 1 Level: Wire contacts 1 and 2. The switch points ON/OFF are approx. 2.5 % rH. above and below the selected value. |
