With CraNOx II, ECO PHYSICS is launching the second generation of its high-end measurement solution in the ppb and ppt range. The new system is smaller and more sophisticated, as it now has the power to calculate the photostatic equilibrium by means of the integrated ozone analyzer. The CraNOx II system is capable of simultaneously measuring NO, NOX, NO2 and O3. Furthermore, it can be expanded to assess NOY and NH3 concentrations.
A Demanding Task for Mankind The earth’s atmosphere protects life on earth. The challenge is to minimize the man-made influence and impact by emissions to avoid any damage to this protecting shell.
Nitrogen Oxides (NOₓ) and Particulate Matter (PM) Nitrogen oxides are significant precursors of ozone and are formed in all combustion processes including engines, power plants or heating appliances. Ammonia (NH3), a reduced form of a nitrogen oxide, appears as ammonia salt, usually in tiny particles. The assessment of particulate matter and nitrogen oxides is therefore the challenge for instrument manufacturers.
Correct Analysis of NOₓ Our abbreviation for the above title is CraNOx. The first system was launched in the early ’90s by ECO PHYSICS. CraNOx has been part of many research programs and delivered reliable and continuous data all over Europe, from Spitsbergen to Croatia as well as in the Asian Pacific. It consisted of two CLDs with highest resolution and big external pumps, a photolytic converter, an ozone instrument and a calibrator, all built into a rack of more than 1.8 meters in height. Now, ECO PHYSICS announces the next generation: the CraNOx II – all included – even the pump – in less than a quarter of the size.
Compact The main requirement for the new CraNOx II system was a high-performing two channel CLD with pre chambers for compensation of the chemical zero. Timely, the newly developed platform of the SupremeLine offered the necessary sensitivity and speed. With its carefully designed housing of four height units and the integrated powerful pump it was the perfect housing for the further components of the CraNOx II system.
Complete The system would not be complete without an appropriate control software, which handles and manages the different tasks. The software „CraNOx- Control is a Lab-View®-based Windows® application, that measures gases, presents data and performs calibrations.
CustomerFriendly The system starts automatically and quickly reaches measurement mode for continuous and unattended operation. The measured data is continuously stored and displayed on the high-resolution touch-screen. All control functions are easily accessible by means of the interface. Connections for mouse and keyboard as well as LAN and USB add the comfort of a PC. For an enlarged display use the video output for either an additional display or a digital projector. Just concentrate on the data validation and presentation – all other functions are taken over by your CraNOx II system.
NO/NOX detection by CLD:
four freely selectable ranges from 1 ppb – 1000 ppb
Min. detectable concentration*
Noise at zero point (1σ)*
NO2 conversion by photolytic converter:
metal halide lamp (200 W)
automatic correction for photo dissociation rate and ambient ozone concentration
Ozone detection by UV photometer:
1 ppb to 1’000 ppb
± 1 ppb
Principle of operation
mass flow controller
Accuracy (of set point)
± 1 % (flow and concentration)
Modes of operation
man. or automatic zero/span range selectable; converter efficiency check and compensation
Rise time (0-90 %)*
5-95 % rel. h (non-condensing, ambient air and sample gas)