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About Vindski
since
11-20-2020
12-02-2020
Vindski
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5
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0
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12-01-2020
12:23 PM
I understand this local background calibration is quicker if there is a good variatioin in concentration, but how long time more or less? Is it done as fast as in a day or two in good conditions? Or does it usually take a whole week?
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11-30-2020
12:04 PM
Thank you. Although the sensor is tested with bVOC mixture, I suppose it still reacts to other VOCs? Reacts to all VOCs? I plan to use this sensor for measuring air quality in a number of bedrooms, for a period of 2-3 weeks, and move sensor from bedroom to bedroom. I wonder if these measurements will be 100% relative (showing strictly internal changes in each different bedroom), or if I also will get some information about difference in TVOC between bedrooms? I assume the first days in a new bedrooms will show more of how the concentration is different from the previous room, and after some days, when the local background calibration has worked, it is more precise on variation in the room, and less valid for caomparing with other rooms. Is this right?
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11-27-2020
02:58 PM
I still do not understand how the initial calibration of BSE680 for VOC, is done. Do you use a certain mix of gases (standardized mix), and measure the signal? Then double the concentration and check if the signal is doubled? Or is the calibratin done in accordance with some defined standard? You have said that: "BME680 have no selection, so it is sensitive for almost all VOC component". But still i guess you need to calibrate it against something defined?
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11-20-2020
11:32 AM
1 Like
About the calibration of BME680: Do you have a table where you have the sensitivity of the sensor (resistance) to every VOC? Or have you calibrated the sensor using a normalized/standardized mix of VOC? Trying to find out if this sensor is more reactive to some specific gases,(compared with other sensors). Some other questions: Is the output static IAQ from BME680, also expressed in a scale from 1 – 500? The IAQ accuracy reflects the current state of the background calibration process. Does this kind of calibration also apply to static IAQ?
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11-20-2020
10:46 AM
How do I submit my question, in the question and answers part? I find a square for typing the question, but nothing happens. And I dont find any button for submitting.
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