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--- amc2022:grouph:mq2 [2022/09/10 21:42] – [Structure:] gustavo001
+++ amc2022:grouph:mq2 [2023/01/05 14:38] (current) – external edit 127.0.0.1
@@ Line 58: / Line 58: @@
 ((How MQ2 Gas/Smoke Sensor Works? & Interface it with Arduino ,  https://lastminuteengineers.com/mq2-gas-senser-arduino-tutorial/))
-The process is well illustrated in Figure #, shown below.
+The process is well illustrated in Figure 2.4, shown below.
@@ Line 71: / Line 71: @@
 ====Reading the Data:====
-The MQ-2 sensor functions as a voltage divider. The analog voltage output varies accordingly with the  concentration of combustible gasses and its interaction with the oxygen, thus yielding  a higher voltage proportional to the quantity of the present  gas. The sensor cannot determine which gas is present, however the interaction with any of the possible measurable gasses creates a distinct pattern that has been provided by the manufacturers, shown in Figure #. By creating a code that follows the guidelines set by the manufacturer design we can then measure with a small margin of error, the concentration of distint types of gasses in the air simply by analyzing the resistance ratio  of the sensor (RS/R0).
+The MQ-2 sensor functions as a voltage divider. The analog voltage output varies accordingly with the  concentration of combustible gasses and its interaction with the oxygen, thus yielding  a higher voltage proportional to the quantity of the present  gas. The sensor cannot determine which gas is present, however the interaction with any of the possible measurable gasses creates a distinct pattern that has been provided by the manufacturers, shown in Figure 2.5. By creating a code that follows the guidelines set by the manufacturer design we can then measure with a small margin of error, the concentration of distinct types of gasses in the air simply by analyzing the resistance ratio  of the sensor (RS/R0).
 ((https://thestempedia.com/tutorials/interfacing-mq-2-gas-sensor-with-evive/))
@@ Line 77: / Line 77: @@
   * R0 is the value given or base number of the resistance found on the sensor for fresh air.
   * For the MQ-2 sensor  the ratio given by the manufacturer of RS/R0 is 9.8.
-  * Specified in Figure # and in the specifications of the manufacturer, the sensor can only read gas concentrations between 200 and 10000ppm.
+  * Specified in Figure 2.5 and in the specifications of the manufacturer, the sensor can only read gas concentrations between 200 and 10000ppm.