Carbon dioxide measurement

Measurement range


Accuracy (including repeatability, non-linearity and calibration uncertainty)
Sensor

0 ... 2000 ppm (nominal; can be calibrated for other ranges:
0 ... 5000 ppm, 0 ... 10 000 ppm, 0 ... 20 000 ppm)


±(2 % of range + 2.0 % of reading)
Vaisala CARBOCAP^®

Temperature measurement (optional with GMW21)

Measurement range
Accuracy at +25 °C
Sensor

0 ... +50 °C (+32 ... +122 °F)
± 0.5 °C (± 0.9 °F)
Semiconductor IC

Operating environment

Temperature
Humidity

-5 ... +45 °C (+23 ... 113 °F)
0 ... 85 %RH non-condensing

Inputs and outputs

Outputs
Optional outputs
Operating voltage
Power consumption

0 ... 20 mA or 4 ... 20 mA and 0 ... 10 V
relay, LonWorks^® interface
nominal 24 VAC/DC (18 ... 30 VDC)
<2.5 W

Mechanics

Weight
     GMD20(D)
     GMW21 (D)
     GMW22 (D)
Housing material
Housing classification (electronics housing GMD20)

140 g (170 g)
100 g (130 g)
 90 g (120 g)
ABS plastic

IP65 (NEMA 4)