Olythe SAS
240 rue Louis de Broglie,
13100 Aix-en-Provence, FRANCE
+33 (0)4 42 52 62 39
contact@olythe.com
240 rue Louis de Broglie,
13100 Aix-en-Provence, FRANCE
+33 (0)4 42 52 62 39
contact@olythe.com
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©2013-2023 Olythe SAS
OCIEngine is an infrared spectrometer that measures Volatile Organic Compounds (VOC) in the air. It is specific to analyse a molecule of interest, such as ethanol.
These sensors are specific to analyze a particular gas among those:
ADVANTAGES
- Thermally stabilized tank to sample in wet gases
- Fast and consistent measurements at any concentration levels
- Offers high selectivity and few interferences
- Direct flow management
- Durability: long term precision and reliability
- Low power consumption
- Portable design for integration into mobile systems
Measurement method
Infrared radiation passes through the sensor’s measuring chamber. When air is introduced, the molecules of interest absorb part of the radiation, reducing the intensity of the optical signal. This measurement is then used to calculate the concentration of a specific gas following the Beer-Lambert law:
concentration = log10 (Intensity IR / Intensity zero IR) / Optical Length
OCIEngine gas sensor architecture
Thanks to the heating chamber that is thermal stabilized, the measuring cell can operate with dry or wet gas without condensing and achieve good accuracy. The low mechanical profile and limited power consumption facilitates the integration into final device. Single or dual gas analysis can be selected and adapted to end-user application.
Discover our realizations
Link to: OCIEngine ethanol sensor
Ethanol measurement (breath)
- Measurement range:From 50 to 4000 µg/L
- Measurement accuracy (max error):
± 20 µg/L @ 100 µg/L
± 40 µg/L @ 400 µg/L - Test duration: 4000 ms minimum
- Sampling period: 125 ms
- Flow rate range: > 8,5 L/min
- Humidity: < 100% relative humididy (RH), not condensing
See applications:
Exhaled air analysis
Link to: OCIEngine Pro ethanol
Ethanol measurement (air)
- Measurement range:From 5 to 500 ppm
- Measurement accuracy (max error):
± 2 ppm @ 10 ppm
± 8.5 ppm @ 50 ppm
± 11 ppm @ 300 ppm - Response time: 1s (τ=63%), at a flow rate of 1L/min
- Sampling period: 125 ms
- Flow rate range: From 0.1 to 1.5 L/minute
- Humidity: < 100% relative humididy (RH), not condensing
Link to: OCIEngine CO2 | NDIR Gas sensor
CO2 measurement (breath)
- Measurement range:0-5%
- Measurement accuracy (max error): 0,02% + 2% reading
- Sampling period: 20 reading per second
- Operating condition – temperature: From 0°C to 50°C
- Humidity: < 100% relative humidity (RH), not condensing
See applications:
CO2 in breath analysis