Qubit Systems Inc.

Qubit Systems Inc.

Model S158 - CO2 Analyzer



S158 CO2 Analyzer is a single channel non-dispersive infrared CO2 analyzer that measures CO2 in 0 to 10% range with better than 0.01% accuracy.  It is ideal for CO2 exchange measurements in larger or more active animals and in situations where high CO2 fluxes may occur, such as fermentation processes.

The S158 shares the same infrared technology and modular design as the S157 CO2 Analyzer. The analyzer may be used in a flow-through gas exchange configuration for instantaneous and continuous measurements of CO2 exchange. It can also be used in an injection mode when injection septum is employed for detection of CO2 levels in gas samples collected earlier. The S158 may also be used as part of Qubit Systems’ CO2 control system for regulating pCO2 in growth cabinet or part of our Q-DCO2 system for measurements of dissolved CO2 levels in liquid. The S158 may be manufactured with a built in gas pump (S158-P) or with built in gas pump and Flow Monitor (S158-PF).  The S158 CO2 analyzer can be used with our data acquisition interface and software C901 Logger Pro) or other  systems.

  • Switchable ranges of 0 – 5% and 0 – 10% CO2
  • 0.01% CO2 on digital display, better resolution in software.
  • 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
  • Optional built in gas pump and Flow Monitor
  • Compact and portable
  • Weatherproof case

  • Respirometry in mammals
  • Exhaled air analysis in humans
  • Compost monitoring
  • Monitoring of anaerobic metabolism in yeast colonies
  • environmental monitoring
  • Gas control systems
  • Dissolved CO2 systems

  • 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 – 10.00%
  • Analog output, low sensitivity: 0 – 10%
  • Analog output, high sensitivity: 0 – 5%
  • Accuracy: 0.1% of full scale
  • Repeatability: Better than ±1% of reading
  • Response time (@ 250 mL/min; to 95% of final value): ca. 30 sec
  • Warm up time (@ 22C): ca. 5 min
  • Output (linear) for Low Sensitivity setting: 0 – 5 VDC for 0 – 10%
  • Output (linear) for High Sensitivity setting: 0 – 5 VDC for 0 – 5%
  • Calibration adjustments: Zero and Span
  • Operating temperature range: 0 to 50C
  • Storage temperature range: -40 to 70C
  • 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 or
  • Current requirements: 175 mA average, 450 mA peak
  • Dimensions (cm): (H x W x D: 25.4 x 10.2 x 15.2)
  • Weight: 2.2 kg
  • Warranty: 1 year limited

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