BA_907021_850 // v1.3 // Modification rights reserved // 302736
tEchNIcAL dAtA
(Modification rights reserved)
SEtUP ANd AdJUStMENt
Changing the CO2 output signal:
The output signal can be changed from voltage to current or vice-versa. (The T output can only be voltage)
Set the output signal selection switch to I for current 4 - 20mA output or to U for voltage 0 - 10V output. The original CO
2
output range
does not change and the calibration data remain valid.
Example:
Factory setup: voltage output (U), output scale: 0 - 10V = 0 - 5000ppm
User setup (after setting the output signal selection switch to I): current output (I), output scale: 4 - 20mA = 0 - 5000ppm.
Important:
• After changing the factory setup (output signal and/or output scale) the original type number on the identification label loses its
validity; it does not match any longer the device setup.
Measuring Values
CO
2
Measurement principle dual wavelength non-dispersive infrared technology (NDIR)
Measuring range 0...2000 / 5000 / 10000ppm
Accuracy at 25°C
(77°F) 0...2000ppm: < ± (50ppm +2% of measured value)
and 1013mbar
(14.7psi) 0...5000ppm: < ± (50ppm +3% of measured value)
0...10000ppm: < ± (100ppm +5% of measured value)
Response time
τ
63
< 100s at 3m/s (590ft/min) air speed in the duct
Temperature dependency typ. 1ppm CO
2
/°C (-20...45°C) (-4...113°F)
Calibration interval 1) >5 years
Sample rate approx. 15s
Temperature
Working range -20...60°C (-4...140°F)
Accuracy at 20°C (68°F) ±0.3°C (±0.54°F)
Responsetimeτ63 <50s
Outputs
Analogue Output
CO2: 0...2000 / 5000 / 10000ppm 0 - 10V -1mA < IL < 1mA
T: according ordering guide 4 - 20mA R
L
< 500 Ohm
Passive T-Output
2-wire see ordering guide
Wires resistance (terminal - sensor) typ. 0.4 Ohm
General
Supply voltage 24V AC ±20% 15 - 35V DC
Current consumption typ. 15mA + output current
max. 350mA for 0.3s
Min. flow speed 1m/s (196ft/min) recommended
Housing material Polycarbonate
Protection class Enclosure: IP65 / NEMA 4, probe: IP20
Cable gland M16 x 1.5
Electrical connection screw terminals max. 2.5 mm
2
(AWG 14)
Electromagnetic compatibility EN61326-1 EN61326-2-3 Industrial Environment
FCC Part 15 Class B ICES-003 Issue 5 Class B
Working and storage conditions -20...60°C (-4...140°F) 0...95% RH (non-condensing)
1) under normal operating conditions
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