Airoptic
GasEye Probe
GasEye Probe is a single or multi-laser analyzer that utilizes tunable diode laser (TDL) absorption spectroscopy. The central unit sends a laser light through the tube. When a gas of interest is present, it will absorb the laser light. According to Lambert’s Beer law, the optical power detected in the central unit will depend on the concentration of the gas, temperature, pressure,
In the GasEye Openpath analyzer, the laser wavelength is specifically chosen to match the fingerprint region of the particular gas of interest and is being continuously scanned over the absorption line. Since full spectral information is recovered with very high spectral resolution the analyzer remains immune to foreign gas broadening and is immune to cross-interferences from dust and any other gas constituents in the process. GasEye Probe by design can operate in several wavelength regions from Near-Infrared to Mid-Infrared.
Example Applications
- Gas quality measurement
- Safety monitoring
- Process control
Example Industries
- Petrochemical industry
- Power industry
- Steel industry
- Chemical industry
Features
- Process pressures : 0.7 – 2.0 barA
- Process temperature: 0-500ºC
- Real time sensing: response time below 1 second
- High sensitivity: detection limits down to ppb range
- Maintenance free: equipped with a self-calibrating feature, no field calibration necessary
- High selectivity: automatic compensation for interference effect from other constituents in the gas sample
Operating principle
GasEye Probe is a laser spectrometer that uses single line molecular absorption spectroscopy. A semiconductor laser emits a beam of infrared light which passes through the process and impinges the detector on the receiver side. When the target gas is present the light intensity changes and this can be used to determine the concentration of the measured specimen. The wavelength of the radiation emitted by the laser is chosen to match the specific absorption line wavelength of the gas. The laser continuously scans this single absorption line with a very high spectral resolution. The measurement is free of cross-interferences since the laser light is absorbed very selectively by only one specific line in the scanned spectral range.
GasEye Probe Details
 Mechanical specification: |
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| Analyzer dimensions: | width x height: 330 mm x 230 mm length: 323 mm |
| Analyzer with probe: | width x height: 330 mm x 230 mm length: 1600 mm |
| Active optical path length: | 2x 578 mm |
| Weight (analizyer including probe): | 18 kg |
 Materials: |
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| Housing: | aluminium |
| Coating: | RAL5010 |
| Process interface: | Stainless steel 316 |
 Climatic conditions: |
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| Ambient temperature: | -30ºC to 60ºC |
| Ambient pressure: | 800 – 1200 hPa |
| Ambient humidity: | RH < 90%, non-condensing |
 Measurement conditions: |
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| Sample gas pressure: | 0.7 – 2 barA |
| Sample gas temperature: | 0ºC to 500ºC |
 Sensor and Process Purging: |
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| Purging gas flow rate: | 5 – 50 l/min (process dependent) | |
| Safety: |
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| Low Voltage Directive (LVD) 2014/35/EU | PN-EN 60825-1:2014-11 – Safety of laser products – Part 1: Equipment classification and requirements | |
| PN-EN 61010-1:2011 – Safety requirements for electrical equipment for measurement, control and laboratory use – Part 1: General requirements | ||
| EMC Directive 2014/30/EU | EN 61326-1:2021 | |
| RoHS Directive 2011/65/EU | ||