KCO2.T.RH.x U/OC – KLQ.T.RH U/OC
Multi-function channel CO2 and/or air quality sensor with active output
Application
The KCO2.T.RH + x or KLQ.T.RH with or without display determines the CO2 content, temperature, air quality and relative humidity in the duct, depending on the variant of the unit. The air quality is determined on the basis of a mixed gas sensor/VOC sensor (volatile organic compounds). The CO2 content of the air is determined by means of an NDIR sensor. A selfcalibration of the CO2 measurement is carried out every 7 days. To ensure this function, the unit must be supplied with fresh air (CO2 content approx. 400 ppm) at least once within a period of 7 days.
Technical Data
| Power supply:: | 24V DC |
| Max. current draw: | VOC 10mA, CO2 20mA, CO2+VOC 25mA OC on >6V, OC off <4V |
| Air quality sensor: | VOC sensor (metal oxide) |
| Air quality measuring range: | 0...100% air quality |
| Air quality output signal: | 0-10V / OC 24V 50mA, short-circuit proof 1V = clean air 10 V = polluted air |
| Air quality meas. accuracy: | ±20% input value |
| Detection of the gases: | non-selective |
| Temperature meas. range: | 0...+50°C |
| Temperature output signal: | 0-10V |
| Temp. meas. accuracy: | ± 1% of measuring range |
| Humidity meas. range: | 0...+100% R.H. |
| Humidity working range: | 10...+90% R.H. |
| Humidity output signal: | 0-10V |
| Humidity meas. accuracy: | ± 3% from 20...80% rH |
| Carbon dioxide sensor: | optical sensor (NDIR) |
| CO2 measuring range: | 0...2.000 ppm |
| CO2 output signal: | 0-10V / OC 24V 50mA, short-circuit proof |
| CO2 meas. accuracy: | +-30 ppm +3% of reading |
| Auto calibration CO2: | can be deactivated via jumper |
| CO2 manual calibration: | by means of fresh air and calibration button |
| Ambient temperature: | 0...+50°C |
| Humidity: | < 95 % rH, non-condensing air |
| Connection head: | ABS/PC, colour pure white (similar to RAL 9010), 4 quick-release screws |
| Dimensions: | 81 x 55 x 35 mm plus PG |
| Protective pipe: | ABS/ PC, colour pure white (similar to RAL9010) KCO2.T.RH.+x: EL = 165mm, Ø 28.5mm KLQ.T.RH: EL = 160mm, Ø 16mm |
| Display (optional): | LCD for T, rH, CO2, VOC with different display modes |
| Electrical connection: | 0,14 - 1,5 mm² via screw terminals on circuit board |
| Run-in time: | approx. 10 min |
| Cable gland: | M16, with tension relief |
| Process connection: | by means of ABS/PC mounting flange (included) |
| Protection class: | III (according to EN 60 730) |
| Protection type: | Housing IP 65, sensor IP40 (according to IEC 529) |
| Standards: | CE conformity, electromagnetic compatibility according to EN 61 326 +A1+A2, EMV Directive 89/336/EWG |
