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PRI-8400 Underground Online Dilution Profile Continuous Measurement System
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Soil respiration is one of the largest and most important carbon fluxes in terrestrial ecosystems. Surface flux research can not discover entire soil biochemistry processes. Undergrand gas reaserch will help us understand better on soil gas migration and soil biochemistry processes. PRI-8400 is a newly designed automated underground soil gas profile pretreatmet system, it’s easy to connect with low measurement range analyzers, suitable for long term multilevel soil flux measurments.

Standard PRI-8400 includes 6 sampling channels with simi-permeable membrane gas exchange module, and online dilution module, 3 channels calibration module as option. Innovative simi-permeable membrane design can minimize sampling error caused by soil heterogeneity. Scientific and sophisticated gas exchange module also minimizes sampling interference within the soil. As option, the patented dual circulation and CO2 pretreatment module for minimal interference of subsequent level soil, enables scientists to obtain more accurate data.

PRI-8400 is a rugged, weatherproof mechanical design intergated with online dilution module, which can be used for various soil research. The system can be widely used in the fields of ecology, agriculture, forestry, fertilizer, permafrost, plant rhizosphere physiology and ecology.

Key Feature

  • Innovative membrane gas exchange technology
  • large dynamic online dilution
  • No disturb on soil internal gas circulation metabolism
  • Continuous sampling and minimal interference



 Measurement Range  0~100%
 Concentration Uncertainty  >2%
 Rise-Fall(10-90%,90-10%)  1~90s
 Channals  6 (standard), customizable
 Calibration Channals  3
 Sampling Tube  1 m(standard) for each channal,customizable
 Sampling Temp.  -10 ~ 50 °C
 Sampling Flowrate  0.5 mL/min@760 Torr
 Sampling Pressure  400~1000 Torr(40 ~ 133 kPa)
 Operating Temp.  -10~50°C;-30~50°C
 Power Requirements  100W, 110~220VAC, 50/60Hz
 Dimensions  43.2 x 17.8 x 44.5 cm
 Weight  15 kg

Note: All specifications are believed to be correct at the time of publication, PRI-ECO does not accept liability for any errors or omissions. Due to continuous product development always check latest published specification.

Manufacturer: PRI-ECO

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