Q-S151 CO2 Analyzer 0-2000ppm

This CO2 analyzer may be used in a flow-through system configuration for instantaneous and continuous measurements of CO2 production or consumption. It can also be used in a closed system mode for measurements at extremely low activity levels.

This Q-S151 CO2 analyzer may be set up for use in the injection mode where small samples of CO2 gas are injected into a carrier gas flowing past the CO2 sensor for measurements of CO2 levels in the headspace of collected samples.

The Q-S151 is a key component of Qubit Systems’ carbon dioxide control system for regulating pCO2 in growth cabinet or rooms.

• Switchable ranges of 0 – 500 ppm and 0 – 2000 ppm CO2
• 1 ppm CO2 resolution on digital display
• Non-dispersive infrared technology
• Modulated infrared light source = no moving parts
• 0 – 5 V analog output at both range settings
• Optional battery pack for field use
• Compact and portable

• Photosynthetic measurements
• Respiration of roots and soil samples
• Respirometry of insects and other invertebrates
• Head space analysis of cell cultures
• Atmospheric monitoring and control

• FL23 Algal CO2 Package
• Q-Box CO650 Plant CO2 Analysis Packages
• Q-Box RP1LP Low-Range Respiration Package
• Q-Box SR1LP Soil Respiration Package

• Operating principle – Non-dispersive infrared
• Gas sampling mode – Flowing gas stream, sealed chamber
• Maximum gas flow rate – 650 mL/min
• Measurement range (LCD display)- 0 – 1999 ppm
• Analog output, low sensitivity- 0 – 2000 ppm
• Analog output, high sensitivity- 0 – 500 ppm
• Accuracy – ± 1 ppm
• Repeatability (at stable atm press and temp)- Better than ±1 ppm
• Maximum drift (per year) – ±100 ppm
• Response time (@ 250 mL/min; to 95% of final value) – ca. 25 sec
• Warm up time (@ 22oC) – ca. 5 min
• Output (linear) for Low Sensitivity setting – 0 – 5 VDC for 0 – 2000 ppm
• Output (linear) for High Sensitivity setting – 0 – 5 VDC for 0 – 500 ppm
• Calibration adjustments – Zero and Span
• Operating temperature range – 0 to 50oC
• Storage temperature range – -40 to 70oC
• Operating pressure range – ±1.5% local mean pressure
• Humidity range – 5 to 95% RH, non-condensing (recommend drying gas stream)
• Pressure dependence – +0.19% reading per mm Hg
• Power requirements- 12 VDC via 120 VAC/60 Hz adapter
• Current requirements – 125 mA average, 450 mA peak
• Dimensions (cm) – (H x W x D: 5.5 to 9.5 x 9.5 x 17)
• Weight – 1kg
• Warranty – 1 year limited

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• Jean E.T. McLain and Dean A. Martens. N2O production by heterotrophic N transformations in a semiarid soil. Applied Soil Ecology Vol 32, Issue 2 p253-263 (2006).
• Jean E.T. McLain and Dean A. Martens. Nitrous oxide flux from soil amino acid mineralization. Soil Biology and Biochemistry. Vol 37, Issue 2, p289-299 (2005).

• Mark O. Baerlocher, Douglas A. Campbell, and Robert J. Ireland. Developmental progression of photosystem II electron transport and CO2 uptake inSpartina alterniflora, a facultative halophyte, in a northern salt marsh. Can. J. Bot. Vol. 82, Number 3, p365–375 (2004)
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• Y.P. Cen and D. B. Layzell. Does oxygen limit nitrogenase activity in soybean exposed to elevated CO2? Plant, Cell & Environment Vol 27, Issue 10, p1229–1238 (2004).
• Lewis H. Ziska, PhD, Dennis E. Gebhard, David A. Frenz, MD, Shaun Faulkner Benjamin D. Singerd and James G. Straka, PhD. Cities as harbingers of climate change: Common ragweed, urbanization, and public health. J ALLERGY CLIN IMMUNOL, Vol 111, Number 2, p290-294 (2003).
• Colette A. Sacksteder and David M. Kramer. Dark-interval relaxation kinetics (DIRK) of absorbance changes as a quantitative probe of steady-state electron transfer. PHOTOSYNTHESIS RESEARCH Vol 66, Numbers 1-2, p145-158 (2000).