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Added offset of 400 ppm of CO2 on example MQ135

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miguel5612 2020-05-31 10:58:00 -05:00
parent 688827ffb4
commit beab80c403
1 changed files with 9 additions and 2 deletions
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11
examples/MQ-135-ALL/MQ-135-ALL.ino
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@ -98,8 +98,15 @@ void loop() {
float Acetona = MQ135.readSensor(); // Sensor will read PPM concentration using the model and a and b values setted before or in the setup
Serial.print("| "); Serial.print(CO);
Serial.print(" | "); Serial.print(Alcohol);
Serial.print(" | "); Serial.print(CO2);
Serial.print(" | "); Serial.print(Alcohol);
// Note: 200 Offset for CO2 source: https://github.com/miguel5612/MQSensorsLib/issues/29
/*
Motivation:
We have added 200 PPM because when the library is calibrated it assumes the current state of the
air as 0 PPM, and it is considered today that the CO2 present in the atmosphere is around 400 PPM.
https://www.lavanguardia.com/natural/20190514/462242832581/concentracion-dioxido-cabono-co2-atmosfera-bate-record-historia-humanidad.html
*/
Serial.print(" | "); Serial.print(CO2 + 400);
Serial.print(" | "); Serial.print(Tolueno);
Serial.print(" | "); Serial.print(NH4);
Serial.print(" | "); Serial.print(Acetona);