is the concentration range the sum of all compounds? or
many compounds are measured separately,
maximum value achieved by the compound?
example:
MQ3 has a concentration of 25-500 ppm. separately according to the mq3 chart: LPG
It can analyze CH4, CO, ALCOHOL, BENZENE, HEXANE compounds. analyzes some of them with high sensitivity and some at low sensitivity. now let's say any compound analyzes between 25-100 ppm, the remaining compounds
Now, since 100ppm right is used, should the 2nd compound be analyzed between maximum 25-400 ppm or can this be the maximum of all compounds, that is, 25-500ppm according to the highest concentration we have determined, for the second time, like this: if we compare the gas sensor to a class, the compounds If we are like students, and we set the maximum score to be given in the exam as 100 (just as it determines the concentration), my score of the person who gets the best from the students in the class is 100, or the sum of the scores of all the students is 100?
Do you have an Arduino question?
I have question regarding the range of gas sensor in Arduino
What does the sensor's datasheet say?
I understood the answer to this question by collecting all the values (which I obtained from graphite) by doing analogRead() and bringing it to the ppm range with the map() command, looking at the difference between the two values, and when I turned the potentiometer a little, I saw that it suddenly increased disproportionately after the value I calibrated (RL=10) yes a gas I connected the potentiometer instead of the sensor. So how should I calibrate the sensor for the best results?
The lower the R0 value, the more it should change for the low group, the higher the R0 value, the less for the low group, but the higher the ppm, the less the deviation (nonsense) happens at the end.
So how can I find the most accurate value? Does it make sense to look at the ppm range and bring the deviation there?
This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.