Multi-Pixel Gas Sensor SGP
The multi-pixel gas sensor platform SGP creates new possibilities for the measurement of indoor air quality. The SGP offers a complete gas sensor system integrated into a very small 2.45 × 2.45 × 0.9 mm3 DFN package featuring an I2C interface and fully calibrated air quality output signals.
Sensirion’s MOXSens® Technology provides the SGP with an unmatched robustness against contamination by siloxanes resulting in unique long-term stability and accuracy. The SGP further combines multiple metal-oxide sensing elements − the pixels – on one chip to provide more detailed air quality signals. The unprecedented combination of long-term stability and multi-pixel technology makes the SGP a perfect choice for indoor air quality monitoring in mobile, smart home and appliance applications.
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Overview of Sensirion's Gas Sensors
SVM30 (coming soon)
|Supply voltage||1.62-1.98 V||1.62-1.98 V||4.5-5.5 V|
2.45 x 2.45 x 0.9 mm3
2.45 x 2.45 x 0.9 mm3
39 x 15 x 6.5 mm3
|Interface||I2C 1.8 V||I2C 1.8 V||I2C 5 V|
|Indoor Air Quality|
|Typ accuracy||15% of measured value||15% of measured value||15% of measured value|
|Output range1||TVOC: 0 – 60'000 ppb|
CO2eq: 0 – 60'000 ppm
|TVOC: 0 – 60'000 ppb||TVOC: 0 – 60'000 ppb|
CO2eq: 0 – 60'000 ppm
|Long-term stability||MOXSens® siloxane resistance:|
typ 1.3% accuracy drift per year in siloxane accelerated lifetime test
|Baseline compensation||On-chip baseline compensation algorithm|
|Measurement range||-||-||–20 °C – 85 °C|
|Typ accuracy||-||-||± 1°C|
|Measurement range||-||-||0% – 100% RH|
|Typ accuracy||-||-||± 5% RH|
|Please note that the above values are of indicatory nature only. For detailed information please consult the respective datasheet. |
Long-Term Stability of Metal-Oxide Gas Sensors
Traditional metal-oxide gas sensors suffer from poor long-term stability caused through irreversible contamination by siloxanes.
Siloxanes are everywhere
- Indoor environments
- «Most abundant VOC emitted by humans»
- Consumer products
Siloxanes destroy metal-oxide sensors
- Significant loss of VOC sensitivity
- Strong increase of response time
Sensirion’s proprietary MOXSens® Technology provides the SGP with an
unmatched robustness against siloxanes, resulting in unique long-term
Unique Performance Thanks to MOXSens® Technology
The sensing principle of the SGP is based on a heated film of metal-oxide (MOx) nanoparticles. Adsorbed oxygen on the metal-oxide particles reacts with the target gas and thereby releases electrons. This results in a change of the electrical resistance of the metal-oxide layer that is measured by the sensor.
The SGP multi-pixel gas sensor platform integrates four sensing elements − the pixels – into one small DFN package. Using Sensirion’s CMOSens® Technology, the SGP offers a complete sensor system on a single chip featuring a digital I2C interface, a temperature-controlled microhotplate, as well as preprocessed and calibrated indoor air quality signals.
Optimized metal-oxide sensing materials in combination with Sensirion’s multi-pixel gas measurement platform result in a unique resistance against contamination by siloxanes – MOXSens® Technology. Sensirion’s MOXSens® Technology enables highly sensitive and reliable gas measurements of indoor air pollutants such as volatile organic compounds and hydrogen.
Environmental conditions have a major impact on our well-being, comfort, and productivity. Sensirion’s sensor solutions provide detailed and reliable data on key environmental parameters such as humidity, temperature, volatile organic compounds (VOCs), particulate matter (PM2.5), and CO2. Environmental Sensing opens up new possibilities to create smarter devices that improve our comfort and well-being as well as increase energy efficiency in a wide variety of applications.
We accompany you through the entire product development process, from the initial idea to product launch and beyond. Our expertise ranges from prototype construction, design-in support and use-case development to inline testing at the mass production stage.
Indoor Air Quality and Volatile Organic Compounds
People spend 90% of their time indoors where concentrations of gaseous pollutants are significantly higher than outdoors. The widespread use of new products and building materials, as well as improved insulation for energy efficiency, has resulted in increased
concentrations of volatile organic compounds (VOCs). These VOCs originate mainly from paints and solvents, carpets and furniture, and cleaning agents, and are also emitted by humans. Elevated VOC levels can have a negative impact on well being, comfort, and cognitive abilities. Exposure to high levels of VOCs can be avoided or significantly reduced by regular ventilation, air purification and removal of strong VOC sources.
The Total VOC (TVOC) concept has been established as a practical time and cost-effective method of surveying indoor environments for contamination. Sensirion’s multi-pixel gas sensor SGP enables measurement of TVOC levels and thus helps to increase the efficiency of ventilation and air purification, and increases awareness of VOC sources and indoor air pollution.