El precio original era: $100.00.$50.00El precio actual es: $50.00. MXN (IVA Incluido)
7 disponibles
Este sensor de gas semiconductor detecta la presencia de gas flamable y humo a concentraciones de 300 ppm a 10.000 ppm, un intervalo adecuado para la detección de fugas de gas.
La interfaz sencilla de tensión analógica del sensor requiere sólo un pin de entrada analógica del microcontrolador.
Localización:C10
| Fabricante | Pololu |
|---|
7 disponibles
This flammable gas and smoke sensor detects the concentrations of combustible gas in the air and ouputs its reading as an analog voltage. The sensor can measure concentrations of flammable gas of 300 to 10,000 ppm.The sensor can operate at temperatures from -20 to 50°C and consumes less than 150 mA at 5 V. Please read the MQ2 datasheet (184k pdf) for more information about the sensor.
Connecting five volts across the heating (H) pins keeps the sensor hot enough to function correctly. Connecting five volts at either the A or B pins causes the sensor to emit an analog voltage on the other pins. A resistive load between the output pins and ground sets the sensitivity of the detector. Please note that the picture in the datasheet for the top configuration is wrong. Both configurations have the same pinout consistent with the bottom configuration.The resistive load should be calibrated for your particular application using the equations in the datasheet, but a good starting value for the resistor is 20 kΩ.Connections
We offer two breakout boards that make it easier to interface with these sensors: aPololu carrier board and a SparkFun carrier board. The Pololu version is shown below.
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