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Technical Data
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Carbon Dioxide
Carbon Dioxide
Measurement ranges
GMM221 for high concentrations 0 ... 2 %, 0 ... 3 %, 0 ... 5 %,
0 ... 10 %, 0 ... 20 %
GMM222 for low concentrations 0 ... 2000 ppm, 0 ... 3000 ppm,
0 ... 5000 ppm, 0 ... 7000 ppm,
0 ... 10 000 ppm
Accuracy (including repeatability, non-linearity and calibration
uncertainty) at 25 °C and 1013 hPa
GMM221 ±(1.5% of range + 2% of reading)
(applies for concentrations above 2% of full scale)
GMM222 ±(1.5 % of range + 2 % of reading)
Temperature dependence, typical -0.3 % of reading / °C
Pressure dependence, typical +0.15% of reading hPa
Long-term stability <±5 %FS/2 years
Response time (63 %)
GMM221 20 seconds
GMM222 30 seconds
Warm-up time
30 seconds, 15 minutes
full specifications
Inputs and Outputs
Outputs 0 ... 20 or 4 ... 20 mA, 0 ... 1 V, 0 ... 2V,
0 ... 2.5 V, or 0 ... 5 V
Resolution of analog outputs 12 bits
Recommended external load:
current output max. 200 Ohm
voltage output min. 1 kOhm
Operating voltage 11 ... 20 VDC or 18 ... 30 VDC
Connections screw terminals, wire size 0.5 ... 1.5 mm
2
Power consumption <2.5 W
Operating Environment
Operating temperature -20 ... +60 °C (-4 ... +140 °F)
Storage temperature -30 ... +70 °C (-22 ... +158 °F)
Operating pressure 700 ... 1300 hPa
Humidity
probe 0 ... 100 %RH, non-condensing
mother board 0 ... 85 %RH, non-condensing
Electromagnetic compatibility Applicable parts of EN61326-1,
Generic Environment
Mechanics
Probe housing material PC plastic
Housing classification (probe only) IP65
Weight: GMM221 (w/2m cable) max. 180 g
Weight: GMM222 (w/2m cable) max. 200 g
Probe cable length 0.6 m, 1 m (high temperature cable),
2 m, 6 m or 10 m (optional)
Accessories
Spare probe GMP221, GMP222
(use the order form to define measurement range etc.)
Clips (2 pcs) for attaching the probe 25245GM
Mounting flange for the probe GM45156SP
Calibrator for interchangeable probes GMK220
Probe cables
1 m high temperature probe cable
(180 °C / 365 °F) GMM220Z100SP
2 m probe cable GMM220Z200SP
6 m probe cable GMP343Z600SP
10.0 m probe cable GMP343Z1000SP
Serial COM adapter 19040GM
Calibration adapter for probe 26150GM
Dimensions
Dimensions in mm (inches)
GMP222GMP221
Ref. B210856EN-E ©Vaisala 2013
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