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Vaisala GMP343 Carbon Dioxide Probe

The Vaisala CARBOCAP® Carbon Dioxide Probe GMP343 is an accurate and rugged probe-type instrument for ecological measurements. Typical applications include CO2 soil respiration, ambient CO2 monitoring, plant growth chambers, and OEM applications.

The GMP343 can output both numerically filtered and raw measurement data and it can also compensate the measurement with an internal temperature measurement and user-set relative humidity, pressure and oxygen values.

Each GMP343 is calibrated using ±0.5 % accurate gases at 0 ppm, 200 ppm, 370 ppm, 600 ppm, 1000 ppm, 4000 ppm and 2 %. Calibration is also done at temperature points of -30 °C, 0 °C, 25 °C and 50 °C. If needed, the customer can recalibrate the instrument using the multipoint calibration (MPC) feature allowing up to 8 user-defined calibration points.

 

In combination with a GM70 indicator, the GMP343 provides a tool for accurate in-situ measurement.  The GM70 can be used as a display, communication and data logging device.

 

Vaisala GMP343 Carbon Dioxide Probe specifications…

  • Measurement range options 0 … 1000 ppm, 0 … 2000 ppm,  0 … 3000 ppm, 0 … 4000 ppm,  0 … 5000 ppm, 0 … 2 %
  • Current output range 4 … 20 mA, Voltage output range 0 … 2.5 V, 0 … 5 V & Digital outputs RS485, RS232.
  • Operating voltage 11 … 36 VDC.
  • Power consumption,  without optics heating <1 W, with optics heating <3.5 W.
  • Temperature limits: Operating -40 … +60 °C (-40 … +140 °F), Storage -40 … +70 °C (-40 … 158 °F).
  • Pressure limits: Compensated range 700 … 1300 hPa, Operating <5 bar.
  • Gas flow range for flow-through model 0 … 10 liters/min.

 

Fluidic are a recognised partner of Vaisala CEN (Industrial division) for Scotland and the North of England.  Our instrumentation engineers are product trained and able to help with instrument selection within the full range of Vaisala Carbon Dioxide, CO2 instrumentation.  Please call either office for more information (Glasgow 0141 641 5920,  Warrington 01925 572401).

 

Downloads

  • Download Vaisala GMP343 Carbon Dioxide Probe Datasheet
  • Download Vaisala GMP343 User Guide
  • Download Vaisala GMP343 Soil Adapter Kit (Horizontal Mount)
  • Download Vaisala GMP343 Soil Adapter Kit (Vertical Mount)
  • Download Underground Soil respiration CO2 measurement
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