LPG GAS SENSOR WITH ADJ. SENSITIVITY

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<p style=”margin: 0px 0px 1em; padding: 0px; border: 0px; outline: 0px; font-family: inherit; line-height: inherit; text-overflow: ellipsis;”><strong><span style=”font-size:18px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Description:</span></span></strong></p>

<p style=”margin: 0px 0px 1em; padding: 0px; border: 0px; outline: 0px; font-family: inherit; line-height: inherit; text-overflow: ellipsis;”><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>MQ4 is a semiconductor sensor which can detect the presence of methane, compressed natural gas(CNC) at concentrations from 200 to 10,000 ppm. The sensitive material used for this sensor is SnO2, whose conductivity is lower in clean air. It&rsquo;s conductivity increases as the concentration of methane gas increases. It has also sensitivity to propane and butane gases. MQ4 Methane CNG gas sensor can be easily interfaced with Microcontrollers, Arduino Boards, Raspberry Pi.</span></span></p>

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<p style=”margin: 0px 0px 1em; padding: 0px; border: 0px; outline: 0px; font-family: inherit; line-height: inherit; text-overflow: ellipsis;”><strong><span style=”font-size:18px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Features:</span></span></strong></p>

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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Can be used as a Digital or analog sensor</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Analog output voltage, the higher the concentration, the higher the voltage.</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>The Sensitivity of Digital pin can be varied using the potentiometer</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>High sensitivity to&nbsp;Methane, Natural Gas</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Small sensitivity to alcohol, smoke</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Fast response</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Stable and long life</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Simple drive circuit</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Four screw holes for easy positioning</span></span></p>
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<p style=”margin: 0px 0px 1em; padding: 0px; border: 0px; outline: 0px; font-family: inherit; line-height: inherit; text-overflow: ellipsis;”><strong><span style=”font-size:18px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Specification</span></span></strong></p>

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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Operating Voltage: DC 5V</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Analog Output (AO): 0~5V analog output voltage</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Digital Output (DO): 0V or 5V output</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Configuration: Through Potentiometer (adjusts the output level transition)</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Preheat Duration: 20s</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Weight: 5g</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Dimensions: 23 * 19 * 19 mm</span></span></p>
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<p><strong><span style=”font-size:18px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Sensor Technical parameter:</span></span></strong></p>

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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Detecting Concentration : 200 ~ 10,000 ppm</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Circuit Voltage : 5V &plusmn;0.1 AC or DC</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Heating Voltage : 5V &plusmn;0.1 AC or DC</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Load Resistance : 20K&Omega;</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Heater Resistance : 33&Omega; &plusmn;5%</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Heating Consumption : &lt; 750mW</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Operating Temperature : -10&deg;C ~ 50&deg;C</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Alternative MQ Gas Sensors</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Sensor Name</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Gas to measure</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>MQ-2</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Methane, Butane, LPG, Smoke</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>MQ-3</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Alcohol, Ethanol, Smoke</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>MQ-4</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Methane, CNG Gas</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>MQ-5</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Natural gas, LPG</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>MQ-6</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>LPG, butane</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>MQ-7</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Carbon Monoxide</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>MQ-8</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Hydrogen Gas</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>MQ-9</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Carbon Monoxide, flammable gasses</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>MQ135</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Air Quality</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”><a href=”https://www.sparkfun.com/datasheets/Sensors/Biometric/MQ-4.pdf”><span style=”color:#3498db;”>Datasheet: MQ-4 GAS SENSOR</span></a></span></span></p>

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