Q-S151 Infrared CO2 Analyzer is a non-dispersive infrared CO2 analyzer that measures CO2 in 0 to 2000 ppm range with 1 ppm resolution. Dependable technology rugged and modular for easy fit in our Q-Box Packages or for stand alone use. Q-S151 is ideal for CO2 exchange measurements with leaves, insects, small animals or organisms with a low metabolic rate. It is also excellent for measuring soil respiratory activity in situ in the field and in the lab.
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
Applications
- Photosynthetic measurements
- Respiration of roots and soil samples
- Respirometry of insects and other invertebrates
- Head space analysis of cell cultures
- Atmospheric monitoring and control
| 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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