Vaisala CARBOCAP GMT220 Series - Technical Specifications; Operating Conditions; General

USER’S GUIDE_______________________________________________________________________
16 _____________________________________________________________________U376EN-1.1
Technical specifications
Measuring range
GMT221 0...2% CO
2
, 0...3% CO
2
,
0...5% CO
2
, 0...10% CO
2
,
0...20% CO
2
GMT222 0...2000 ppm, 0...3000 ppm,
0...5000 ppm, 0...7000 ppm,
0...10 000 ppm
Accuracy at 25°C against certified factory references
GMT221 <±[0.02% CO
2
+ 2% of reading]
GMT222 <±[20 ppm CO
2
+ 2% of reading]
(including repeatability and calibration uncertainty)
Non-linearity <±0.5 %FS
Temperature dependence
(typically) 0.1 %FS / °C
Pressure dependence (typically) 0.15 % of reading/hPa
Long-term stability <±5 %FS / 2 years
Response time (63%) 20 seconds (GMT221)
30 seconds (GMT222)
Operating conditions
Operating temperature range -20…+60 °C
Humidity range
probe with cable 0 - 100 %RH (non-condensing)
transmitter body 0 - 85 % RH (non-condensing)
General
Analog outputs 0 - 20 mA or 4 - 20 mA and
0 - 10 V
Resolution of analog outputs 0.03 %FS
Recommended external load:
current output max. 400 Ω
voltage output min. 1 kΩ
Relay contact ratings max. 30 VAC / 60 VDC, 0.5 A
Power supply nominal 24 VAC/DC
Power consumption < 4 W
Warm-up time < 15 minutes
Storage temperature range -30...+70°C
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