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GMT220 Series Industrial Carbon Dioxide Transmitter

Vaisala GMT220 CO2 Transmitter

Vaisala's GMT220 series are the first CARBOCAP® transmitters are designed for harsh and humid environments. Providing several alternatives for measurement range from ppm to percentage level. The housing is IP65 (NEMA 4) compliant and is suitable for use in a wide range of industrial CO2 applications including greenhouses, fruit storage, safety alerts and demand-controlled ventilation in mushroom farms, livestock husbandry and parking garages. 
  • Incorporates Vaisala CARBOCAP® Sensor - the silicon-based NDIR sensor
  • IP65 (NEMA 4) protected against dust and spray water
  • Choice of several measurement ranges
  • Interchangeable probes – easy maintenance


Performance

GMT221 Measurement ranges

0 ... 2 %

  0 ... 3 %
  0 ... 5 %
  0 ... 10 %
  0 ... 20 %
GMT222 Measurement ranges   0 ... 2000 ppm

for low concentrations

0 ... 3000 ppm
  0 ... 5000 ppm
  0 ... 7000 ppm
  0 ... 10 000 ppm
Accuracy (incl. repeatability, non-linearity and calibration uncertainty) at +25 °C (+77 °F) and 1013hPa

GMT221

± 1.5% of range + 2 % of reading (applies for concentrations above 2% of full scale)

GMT222

± 1.5% of range + 2 % of reading
Sensor Vaisala CARBOCAP®
Operating environment

Temperature

-20 ... +60 °C (-4 ... +140 °F)

display

0 ... +50 °C (+32 ... +122 °F)
Relative humidity 0 ... 100 %RH non-condensing
Inputs and outputs

Outputs

0 ... 20 or 4 ... 20 mA and 0 ... 10V

Operating voltage nominal 24 VAC/VDC
Power consumption <4 W
Mechanical

Probe cable length

2 m and 10 m (optional)

Weight - GMT221 max. 280 g
Weight - GMT222 max. 300 g
Material - transmitter body ABS plastic
Material - probe PC plastic
Housing classification IP65 (NEMA 4)
Options and accessories

GMP221, GMP222

spareprobe (use the order form to define measurement range etc.)

25245GM clips (2 pcs) for attaching the probe
GM45156 mounting flange for the probe
25665GMSP 2.0 m probe cable
210848GMSP 10.0 m probe cable
GMK220 calibration kit for interchangeable probes
19040GM serial COM adapter for maintenance purposes
26150GM chamber for pump aspirated sampling systems
GM70 hand-held CO2meter for field verification and calibration

Adobe PDF File GMT220 Brochure Adobe PDF File GMT220 Technical Information Adobe PDF File GMT220 User's Guide
 

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