For over 25 years, PP Systems has been manufacturing high quality CO2
O infrared gas analysers for researchers and customers from a wide variety of disciplines throughout the world. We are considered a leader in CO2
O infrared gas analysis measurement instrumentation and our analysers are in use in over 100 countries worldwide. Our innovative Auto-Zero Measurement Principle ensures the greatest accuracy, reliability and long term stability that many of our customers have come to expect throughout the years.
Our CIRAS-2 SC and CIRAS-2 DC laboratory gas analysers feature a high technical specification and quality workmanship ensuring accuracy, precision and reliability. They are both designed to be operated through a standard PC for stand-alone operation. Having said that, an optional 12V lead acid battery can be supplied for both instruments for portable applications if required.
The CIRAS-2 DC is a dual channel infrared gas analyser for accurate, differential measurement of CO2 and H2O in µmol mol-
1 from 2 gas streams (reference and analysis).
The CIRAS-2 DC is a dual channel, true differential infrared gas analyser featuring 4 independent gas analysers (2 for CO2
and 2 for H2
O). The CIRAS-2 DC is capable of accurate, absolute measurement of CO2
O in µmol mol-1
of two gas streams and displays the results as the absolute concentration of one gas stream (the reference) and the difference between the two gas streams. The analysers (reference and analysis) include an infrared source, gold plated and highly polished sample cells and detectors. The analysers act as absorptiometers measuring only in the 4.26µm (CO2
) and 2.60µm (H2
O) wavebands ensuring accurate, rapid and stable results. As such it is capable of resolving small differences between two gas streams in real time. The analysers are thermostatted and completely insulated to ensure accurate measurements under changing ambient temperatures. This eliminates problems associated with software corrections.
Our history and expertise in CO2
O infrared gas analysis design speaks for itself. The design of the CIRAS ensures an inherent calibration stability. This has been confirmed by over 25 years experience of the technology. The CIRAS system does not require calibration. To ensure proper operation and calibration of the analysers, we do recommend periodic checks to confirm system integrity.
This type of instrument (true differential analyser) is the preferred option for plant photosynthesis and respiration measurements where differential concentrations need to be resolved to a high degree of accuracy and precision.
- CO2: 0-2000 µmol mol-1 (optimal); 0-10000 µmol mol-1 (maximum)
- H2O: 0-Dewpoint
For measurements at elevated CO2
concentrations, the CIRAS-2 DC is factory calibrated up to 10000 µmol mol-1
- High precision, non-dispersive, differential infrared gas analysers for CO2 and H2O
- CO2 Range: 0-2000 ppm (up to 10000 ppm)
- Fast response
- Analog & digital (RS232) linear output
- Excellent stability achieved by built-in Auto-Zero facility
- Fully compensated for changes in temperature, pressure and gas interactions
- Built-in sampling pump with mass flow controllers
- Insensitive to vibration, no moving parts ensuring high reliability
CIRAS-2 DC Differential CO2/H2O Infrared Gas Analyser product brochure
- Photosynthesis and respiration
- Plant/Crop physiology
- Atmosphere & pollution CO2 monitoring
- CO2 enrichment studies
- Animal/insect physiology
- Industrial process control