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)
|
Options and accessories |
|
GMI21
GMR20
GML20
GML20T
19222GM
GMA20T
GM70 w/pump option |
Display and relay option for GMD/W21/22
Relay output option
LonWorks® module with CO2 signal (not available when the display option is added)
LonWorks® module with both CO2 and temperature signals (not available when the display option is added)
Calibration software kit (disk serial COM adapter)
Analog temperature module for GMW21 (not available when the display option is added)
Hand-held CO2 meter for field verification |
For complete specifications, please see the brochure or user guide in "Documents".