GASEX PORTA Portable Gas Analysis System

Based on FTIR Analyzer

Stock Status: On The Way


Transportable and standalone FTIR Gas analysis system ideal for on field measurements. Powerful module for gas analysis, based on our robust and approved "Rocket" FTIR with combined with a 5 meters optical path, low volume ( 0.2 Liter) multi-pass heated cell.

The ARCoptix Gasex modules is the ideal product for system integrators looking for a customized and intergrable system. The Gasex system contains essentially 4 components:

The corrosion resistant gas cell can be heated up to 190 °C, which ensures that the sample stays in gaseous phase (and avoid condensation) even with high concentrations of H2O or corrosive gases. Many gases can be measured simultaneously like CO2, H2O, CO, NH3,NO, NO2, N2O, SO2, CH4, HF, HCl, and VOC´s. Limits of detection are typically around 1ppm and absolute precision of measured concentration is around a few percent (depending also of the quality of the calibrations and measurement conditions).


Interferometer Coupled to A White Cell

The Gasex system consist of an interferometer module including also the MCT detector and an IR light source and a Multi-reflection gas cell. The light is produced by a black body radiation module and modulated by a dual corner cube interferometer.The light is then coupled into the Gas cell (where the gas to be analysed is injected) where it is relfected back and forth 32 times. Finally the light focused on the MCT detector.

Permanentely Aligned Interferometer

The heart of the FT-Rocket is dual corner-cube (retro-reflector) interferometer. The two corner-cubes are fixed to a common swinging arm, which rotates to create an optical path difference (with respect to the beam splitter) in the two arms of the interferometer.

This type of design is called a permanently aligned interferometer. This particular arrangement of the interfeormeter is known to be the most robust against vibrations and temperature drifts. It never has to be realigned.

The swinging arm of the interferometer rotates on wear-free flexure system, making this mechanical system extremely robust and durable.

Solid-state Reference Laser

For measuring the movement of the mirrors, a solid-state reference laser is coupled into the interferometer. Compared to classic HeNe lasers, the solid-state lasers that we use are more compact and have a much longer life-time. They have a very low temperature-induced wavelegnth drift and, when kept at constant temperature with a Peltier element, their wavelength can be stabilized to a few PPM, thus providing a very accurate and reproducible wavelength scale. This is crucial for ensuring a day-to-day and unit-to-unit consistency.

Order Information

GASEX-PORTA-SD-20 Gas Analysis System Res 2 cm -1

GASEX-PORTA-HD-05 Gas Analysis System Res 0.5cm -1

[Design]: Permanentely aligned, maintenance free, hermetic
[Resolution]: 2 cm-1, 1 cm-1 or 0.5 cm-1 (optional)
[Spectral range ]: 830 - 5000cm-1
[Beam-splitter/ windows]: ZnSe
[Wavenumber repetability]: <10ppm
[Scan Speed]: 2-4 spectrum / sec (resolution depended)
[Control laser]: Temperature-stabilized solid-state laser @850nm
[Detector]: MCT,Thermoelectrically cooled; D*=2.5e9 Jones
[Signal to Noise ratio]: 1
[Operation]: Position Independent
[Absotrans(TM)]: Active suppression of Water and Carbon dioxide inside the interferometer housing
[A/D converter]: 24 bit
[Communication interface]: USB 2.0
[Radiation Source]: Glo-bar stabilized at 1550 K
[Design]: Multi-pass, permanently aligned, directly matched to the FTIR
[Path lenghth]: 5M (other path lengths on demand)
[Internal Volume]: 0.2L
[Zero Gas Loss]: > 3 dB (less than 50 %)
[Operation temperature]: -20°C to 200°C (not condensing)
[Construction ]: Aluminium with inert coating
[Parabolic Mirrors]: Aluminum body with rhodium protected gold coating
[Heaters for stabilization at 180°C]: Electric 400 W peak power, consumption in steady state
[Thermostat]: PID (integrated or customizable)
[Operation voltage of heaters]: 220 V, (customizable for other voltages)
[Gas connectors]: 6 mm Swagelock (customizable)
[Communication]: USB 2.0 (optionally Wifi)
[Operating temprature]: 0°C - 35°C
[Operatings System]: Windows 64 bits
[Power Autonomy]: 8 hours in heated regime
[Dimensions]: 450 x 300 x 200 mm
[Total weight]: 13kg
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