WRF04 CO2
Room sensor for measuring CO2 content and optionally temperature and humidity. The maintenance-free sensor creates the conditions for a pleasant room climate and increased well-being. Typical applications are schools, office buildings, hotels, cinemas and similar. The device is additionally available with LED display (traffic light function), LCD and relay output with adjustable threshold values. The device is mounted directly on the wall, on a flush-mounted box or in conjunction with a frame for surface-mounting (see accessories).
| Measuring values | CO2, humidity, temperature |
|---|---|
| Output voltage | VV: 2x 0..10 V, 3xV: 3x 0..10 V, max. load 10 kΩ |
| Output switch contact | relay with change-over contact (volt free contact, optional), adjustable CO2 threshold value, (valid with version active VV | 3xV) |
| Network technology | BACnet MS/TP, LON FT (free topology), RS485 Modbus |
| Power supply | 15..24 V = (±10%) or 24 V ~ (±10%) SELV |
| Power consumption | max. 3 W (24 V =) | 6 VA (24 V ~) |
| Measuring range temp. | 0..+50 °C |
| Measuring range humidity | 0..100% rH non-condensing |
| Measuring range CO2 | 0..2000 ppm |
| Accuracy temperature | ±0,5 K (typ. at 21 °C) |
| Accuracy humidity | ±2% between 10..90% rH (typ. at 21 °C) |
| Accuracy CO2 | ±75 ppm, >750 ppm: ±10% (typ. at 21 °C, 1015 hPa) |
| Calibration | self-calibration, Dual Channel |
| Sensor | CO2: NDIR (non-dispersive, infrared) |
| Display | LCD 29x12 mm, monochrome, 3 LEDs indicating air quality (CO2, traffic light function ‘TLF’), optional, for RS485 Modbus and LON FT |
| Enclosure | PC, pure white |
| Protection | IP30 according to EN 60529 |
| Cable entry | breaking points top/bottom, rear entry |
| Connection electrical | terminal block, max. 1,5 mm² |
| Ambient condition | 0..+50 °C, max. 85% rH non-condensing |
| Weight | 90 g |
| Mounting | surface mounted on flush-mounting box (Ø=60 mm), or to be mounted flat onto the surface using screws, with frame for surface mounting (accessory) or directly on the wall, base part can be mounted and wired separately |
| Notes | optional with display "LCD", optional with relay (floating, max. 24 V / 2 A (ohmic)), optional with traffic light function "TLF" |