Grove - CO, coke oven gas, LPG sensor - MQ9 - analog

Description: Carbon monoxide, coke oven gas and liquefied petroleum gas sensor - MQ9 - Analogue.

The module is equipped witha sensor of carbon monoxide, coke oven gas and liquefied gases - MQ9. The sensoris compatible withArduino and Raspberry,it is equippedwith a Grove connector so you can directly plug it into a Grove-Pi+ or Grove BaseShield anduseits capabilities,without the need for soldering.The power supply is 5 volts and communicates viaan analogue interface. A Grove-Pi+ overlay orADCis required to connect it to the Raspberry.There is a potentiometer on the board to adjust the sensitivity.

Product compatible with Arduino.

The manufacturer providesa user guideshowing its connection and programming.

Carbon monoxide, coke oven gas and liquid gas sensor connection - MQ9

The sensor communicates via an analog interface, thanks to the use of Grove connector it is possible to connect it directly to Arduinoand RaspberryusingGrove-Pi+ orGrove BaseShield.Due to the interface used for communication by the sensor, it is necessary to use a Grove-Pi+ overlayorADCtocommunicate with Raspberry.

Pin Description GND The weight of the system. VCC The supply voltage is 5 V. NC Not connected. SIG Sensor output signal. Carbon monoxide, coke oven gas and LPG sensor specifications - MQ9

• Power supply voltage: 5 V
• Sensitivity adjustment range: from 2 Ω to20000 Ω
• Measurement range:
  • CO: from 200 to 1000 ppm
  • CH4: 200 to 10000 ppm
  • LPG: 200 to 10000 ppm
• Dimensions: 40 x 30 x 24 mm
• Weight: 7,8 g

The kit includes:

• Gas sensor MQ9
• Grove cable

Useful links

• Manufacturer's website SeeedStudio 101020055
• Sensor Wiki page
• User guide
• MQ9 sensor documentation
• Eagle files
• Sensor diagram