Ro co2 mq135 info

[lizzus]

float           CO2Curve[2]     =  {113.7105289, -3.019713765};  //MQ135
float           CO_secCurve[2]  =  {726.7809737, -4.040111669};  //MQ135
float           NH4Curve[2]     =  {84.07117895, -4.41107687};   //MQ135
float           C2H50H_Curve[2] =  {74.77989144, 3.010328075};   //MQ135 
float           CH3Curve[2]     =  {47.01770503, -3.281901967};  //MQ135
float           CH3_2COCurve[2] =  {7.010800878, -2.122018939};  //MQ135

Im using mq135 sensor. i get these values curve.

These are R0 and RL.

float Ro4 = 2.511;    //MQ135   2.51 this has to be tuned 10K Ohm
float RL4 = 0.990;    //MQ135   FC-22

I know that CO2 PPM default is about 400 ppm. so during calibration i have to use different R0 Value right? Ro value for co2 is 41763, so i will use r0 2.511 for other gases and 41763 for co2. Can i have an advice?

thanks

[empierre]

I would use this for only one gas at a time, only CO2 can be available to clean air for there is a global concentration, any other you would need a know concentration to play with.

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On Wed, Oct 2, 2019 at 5:32 PM Lizzus ***@***.***> wrote: float CO2Curve[2] = {113.7105289, -3.019713765}; //MQ135 float CO_secCurve[2] = {726.7809737, -4.040111669}; //MQ135 float NH4Curve[2] = {84.07117895, -4.41107687}; //MQ135 float C2H50H_Curve[2] = {74.77989144, 3.010328075}; //MQ135 float CH3Curve[2] = {47.01770503, -3.281901967}; //MQ135 float CH3_2COCurve[2] = {7.010800878, -2.122018939}; //MQ135 Im using mq135 sensor. i get these values curve. These are R0 and RL. float Ro4 = 2.511; //MQ135 2.51 this has to be tuned 10K Ohm float RL4 = 0.990; //MQ135 FC-22 I know that CO2 PPM default is about 400 ppm. so during calibration i have to use different R0 Value right? Ro value for co2 is 41763, so i will use r0 2.511 for other gases and 41763 for co2. Can i have an advice? thanks — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#34>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABXTDCQ4KQKTIPQDDYF4IHLQMS5KNANCNFSM4I4X6Y3Q> .