Category : Environmental measurement, test and control equipment > Gas analyzers, detectors & mixers

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The Vaisala CARBOCAP® Carbon Dioxide Probe GMP343 is a compact field instrument designed for soil respiration measurements, other ecological measurements and various custom applications. The metal-cased GMP343 operates in harsh conditions: in temperatures -40...+60 °C (-40...+140 °F) and humidity 0...100 %RH. The GMP343 weighs less than 0.4 kg and consumes under 1 W of power. The probe uses the unique Vaisala CARBOCAP® silicon-based infrared sensor.

The diffusion-aspirated design eliminates the need for sampling systems and pumps. In soil respiration box measurements this design also eliminates errors caused by pressure differences often present in pump-aspirated measurement systems. The Carbon Dioxide Probe GMP343 is very stable, with 6 hour drift less than 1 ppm outdoors. The warm-up time is short.

The GMP343 can output numerically filtered or raw measurement data. Additional features include heated optics, compensation possibilities for temperature, relative humidity and pressure, and built-in self-diagnostics. In addition to the diffusion-aspirated version, the GMP343 is available as a flow-through version. The Carbon Dioxide Probe GMP343 can be powered and used with the portable MI70 indicator for convenient field measurement.

The Vaisala Group is a successful international technology company that develops and manufactures electronic measurement systems and equipment for meteorology, environmental sciences, traffic safety and industry. Vaisala employs over 1,100 professionals and achieved net sales of EUR 189.2 million in 2003. Vaisala serves customers throughout the world. In 2003, exports accounted for 96.6% of net sales. Vaisala's A-series shares are quoted on the Helsinki Exchanges (HEX).

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