The PA101 photoacoustic gas analysis module is an FTIR accessory that fits into the sample compartment of common laboratory FTIR instruments.
The PA101 allows gas analysis from very low gas volume using optical path length of only few centimeters with the sensitivity of a much longer gas cell used in the conventional transmission measurement. Therefore, the photoacoustic signal is highly linear in a very wide dynamic range and a very small amount of gas is required for the reliable analysis.
The photoacoustic signal is generated only from the absorption, and therefore, drifts in the alignment of the interferometer optics have only a small effect to the gas spectra. Due to the low drift and no need for background calibration, the PA101 is higly suitable e.g. to FTIR headspace analysis.
PA101 photoacoustic gas analysis module consists of:
- Gasera PA101 photoacoustic FTIR accessory
- Automatic gas exchange system
- Patented optical cantilever microphone
- Particle filter
- Power supply (+12 VDC)
- Cables and parts for connecting to a specified FTIR instrument
- User manual
- Storage case
Features and specifications:
- Detection limits gas depended, typically in the sub-ppm region
- Total internal gas volume: Approx. 30 ml
- Gold coated and temperature stabilized gas cell (user selectable feom room temp up to 50 Celsius
- Patented ultra-sensitive optical microphone based on a MEMS cantilever sensor coupled with a laser interferometer to measure microscopic movement of the cantilever sensor
- Minimum detectable pressure variation in the sample cell: 7.7 x 10-7 Pa/√Hz (RMS)
- Analog interface: BNC
- Analog output: +/- 3.3 VDC interferogram signal
- Recommended FTIR scan rate: 2.5 kHz or less (HeNe frequency)
- Weigth: 6 kg
Applications:
- Headspace analysis
- Analysis of Synthesis Processes
- Analysis of Decomposition Processes
- Outgassing of Materials
- Analysis wet gases
- Gas measurements requiring high dynamic
range
Brochures
PA101 product brochure
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