Gas Sensor MQ-2
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The document provides an overview of a liquefied petroleum gas (LPG) sensor designed for detecting gas concentrations in the air, specifically propane and butane. Key features include high sensitivity, fast response, and stability, with applications in gas leakage detection in various environments. It includes details on the sensor's structure, connection diagrams, Arduino code for integration, and dimensions.
Gas Sensor MQ-2
- 1. www.researchdesignlab.com Page 1 GAS SENSORREV1.0 GAS SENSOR
- 2. www.researchdesignlab.com Page 2 GAS SENSORREV1.0 Contents OVERVIEW ................................................................................................................................... 3 GAS SENSOR ............................................................................................................................ 3 FEATURES ................................................................................................................................ 3 BLOCK DIAGRAM................................................................................................................... 4 APPLICATIONS........................................................................................................................ 4 STRUCTURE AND CONFIGURATION OF GAS SENSOR(MQ2)....................................... 4 CONNECTION DIAGRAM ...................................................................................................... 5 ARDUINO CODE ...................................................................................................................... 6 BOARD DIMENSIONS............................................................................................................. 7 RELATED PRODUCTS ............................................................................................................ 8
- 3. www.researchdesignlab.com Page 3 GAS SENSORREV1.0 OVERVIEW GAS SENSOR The liquefied Petroleum Gas (LPG) sensor is suitable for sensing LPG (composed of mostly propane and butane) concentration in the air. This can be used in Gas Leakage Detection equipment for detecting the ISO-butane, Propane, LNG combustible Gases. If output goes above the preset range, indication will be shown as high otherwise it will remain in idle condition. FEATURES High sensitivity to LPG, natural gas . Fast response. Stable and long life . Simple drive circuit. Small sensitivity to alcohol and smoke.
- 4. www.researchdesignlab.com Page 4 GAS SENSORREV1.0 BLOCK DIAGRAM A/O- Analog output D/O-Digital output APPLICATIONS Used in gas leakage detecting equipments in family and industry. Suitable for detecting of LPG, iso-butane, propane, LNG. Avoid the noise of alcohol and cooking fumes and cigarette smoke. STRUCTURE AND CONFIGURATION OF GAS SENSOR(MQ2) The Gas sensor composed by micro AL2O3 ceramic tube, Tin Dioxide (SnO2) sensitive layer, measuring electrode and heater are fixed into a crust made by plastic and stainless steel net. The heater provides necessary work conditions for work of sensitive components. The enveloped MQ-2 have 6 pin, 4 of them are used to fetch signals, and other 2 are used for providing heating current.
- 5. www.researchdesignlab.com Page 5 GAS SENSORREV1.0 PARAMETER VALUES Operating voltage +5v DC regulated Gas Detection Indicated by LED CONNECTION DIAGRAM Fig1
- 6. www.researchdesignlab.com Page 6 GAS SENSORREV1.0 ARDUINO CODE #include <LiquidCrystal.h> LiquidCrystal lcd(6, 7, 2, 3, 4, 5); /* * LCD RS pin to digital pin 6 * LCD Enable pin to digital pin 7 * LCD D4 pin to digital pin 2 * LCD D5 pin to digital pin 3 * LCD D6 pin to digital pin 4 * LCD D7 pin to digital pin 5 * LCD R/W pin to ground */ const int gasPin = 12; int gasState = 0; void setup() { pinMode(gasPin, INPUT); // initialize the GAS sensor pin as an input lcd.begin(16, 2); // set up the LCD's number of columns and rows } void loop() { gasState = digitalRead(gasPin); // if it is, the GAS sensor is HIGH if(gasState == LOW) { lcd.setCursor(0,1); lcd.print("gas detected"); // Print a message to the LCD. } else { lcd.setCursor(0,1); lcd.print("no gas detected"); } } NOTE: For connections refer fig1
- 7. www.researchdesignlab.com Page 7 GAS SENSORREV1.0 BOARD DIMENSIONS To buy this product click the below link http://researchdesignlab.com/index.php/sensors/gas-sensor.html
- 8. www.researchdesignlab.com Page 8 GAS SENSORREV1.0 RELATED PRODUCTS RDL-UNO ATMEGA DEVELOPMENT BOARD MQ2 GAS SENSOR PIC PROJECT BOARD