What is Sensirion’s VOC Index?

PublishTime：2022-10-21

● The VOC Index is the optimal tool to monitor VOC conditions
■ Instead of etVOC concentration output, which cannot be properly provided under field conditions, the VOC Index utilizes the capabilities of a MOX sensor much more effectively. To achieve this, the raw signal of the SGP4x’s VOC pixel is processed by Sensirion’s powerful Gas Index Algorithm on an external microcontroller. The VOC Index describes the current VOC status in a room relative to the sensor’s recent history. In this way, the VOC Index behaves like a human nose. Assuming that we are entering a room from outside, our nose will use the air composition outside the room as an offset (baseline) and provide us with feedback if it recognizes higher or lower levels of VOCs when entering the room. The VOC Index performs a similar calculation by using a moving average over the past 24 hours (called the “learning time”) as offset.

Brand of Product：	Sensirion
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Product Category：	sensor More
Application：	More
Data Type：	Technical Documentation More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
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Language：	English Chinese Chinese and English Japanese
Date of Creation：	2022/4/2
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Data Size：	289 KB

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