CO2DT( R)
CO2DT(-R)
Systemair AB
Industrivägen 3, SE-739 30 Skinnskatteberg
Tel +46 222 440 00, Fax +46 222 440 99
mailbox@systemair.se • www.systemair.com
Technical data
Supply voltage    24 V AC +/- 20%, 50...60 Hz or 15...35 V DC 
Power consumption    3 W   
Ambient temperature    -5...55°C 
Ambient humidity    0..90% RH, non condensating 
Temperature dependance   Typ. 2 ppm CO
2 
 / °C
Storage temperature    -20...60°C 
Measuring principle    NDIR (Non-Dispersive Infrared Technology) 
Long term stability    Typ. 20 ppm / year 
Response time    < 120 s 
Warm-up time    < 5 min 
Protection class    IP65 with probe downwards, otherwise IP20 
      This product conforms with the requirements of European EMC standards  
      CENELEC EN61000-6-1 and EN61000-6-3 and carries the CE mark. 
Measuring range    0...2000 ppm 
Inaccuracy (at 20°)    < ± (50 ppm + 2% of measuring value) 
Output signal     
 CO2DT    0...10 V DC referring to 0...2000 ppm 
 CO2DT-R    Relay output 50 V AC/60 V DC
Wiring
Models
CO2DT
CO
2
-transmitter for duct mounting with analogue output
CO2DT-R
CO
2
-transmitter for duct mounting with relay output
Dimensions (mm)
CO2DT-R
1 Supply voltage 24 V AC/DC
2 System neutral
3 Common
4 Normally open
5 Normally closed
CO2DT
1 Supply voltage 24 V AC/DC
2 System neutral
3 Signal neutral
4 Output 0…10 V DC, corresponding to 0...2000 ppm CO
2


