mq sensor datasheets

MQ Series Gas Sensor |

MQ-5 Sensor Datasheet. MQ-6 - LPG, Butane Gas This is a simple-to-use liquefied petroleum gas (LPG) sensor, MQ-6-LPG suitable for sensing LPG (composed of mostly propane and butane) concentrations in the air. The MQ-6 can detect gas concentrations anywhere from 200 to 10000ppm. This sensor has high sensitivity and fast response time.

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TECHNICAL DATA MQ-8 GAS SENSOR

Rs:sensor resistance at various concentrations of gases. is shows the typical dependence of the MQ-8 on temperature and humidity. Ro: sensor resistance at 1000ppm of H2 in air at 33%RH and 20 degree. Rs: sensor resistance at 1000ppm of H2 in air at different temperatures and humidities. MQ-8 1 10 100 100 1000 10000 ppm Rs ...

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TECHNICAL DATA MQ-2 GAS SENSOR

MQ-4 Semiconductor Sensor for Natural Gas Sensitive material of MQ-4 gas sensor is SnO2, which with lower conductivity in clean air. When the target combustible gas exist, The sensor’s conductivity is more higher along with the gas concentration rising.

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MQ-7 Semiconductor Sensor for Carbon Monoxide

MQ-7 Semiconductor Sensor for Carbon Monoxide Sensitive material of MQ-7 gas sensor is SnO 2, which with lower conductivity in clean air. It make detection by method of cycle high and low temperature, and detect CO when low temperature (heated by ). The sensor’s conductivity is more higher along with the gas concentration rising.

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HANWEI ELECTRONICS CO.,LTD MQ-137 …

the MQ-137 for several gases. in their: Temp: 20℃、 Humidity: 65%、 O 2 concentration 21% RL=47kΩ Ro: sensor resistance in the clean air. Rs :sensor resistance at various concentrations of gases. is shows the typical dependence of the MQ-137 on temperature and humidity. Ro: sensor resistance at 10ppm of NH 3 at 33%RH and 20 degree.

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TECHNICAL DATA MQ-135 GAS SENSOR - Olimex

Ro: sensor resistance at 100ppm of NH3 in the clean air. Rs:sensor resistance at various concentrations of gases. is shows the typical dependence of the MQ-135 on temperature and humidity. Ro: sensor resistance at 100ppm of NH3 in air at 33%RH and 20 degree. Rs: sensor resistance at 100ppm of NH3 at different temperatures and humidities ...

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Configuring MQ-series Gas Sensors and ADS1115 ADCs ...

Dec 29, 2015· Step 5: Breadboard up one of the MQ sensors and the three ADS1115 breakout boards. The boards have a default I2C address of 0x48. Jumper the second board from the Addr pin to Vdd. This will give it the address 0x49. Jumper the third board from the Addr pin to SDA, which will give it the address 0x4a. I used the MQ-2 and connected AO (Analog Out ...

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Grove - Gas Sensor (MQ2) User Manual

information about the MQ-2 sensor please refer to the datasheet. 7 How to use There're two steps you need to do before getting the concentration of gas. First, connect the module with Grove Shield using A0 like the picture above. And put the sensor in a clear air and use the program below.

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Manual - SparkFun Electronics

Fig2. MQ-4 Test Circuit Instructions: The above fig is the basic test circuit of sensor requires two voltage inputs: heater voltage (V H) and circuit voltage (V C). V H is used to supply standard working temperature to the sensor and it can adopt DC or AC power, while V RL is the voltage of load resistance R L which is in series with ...

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MQ gas and air quality sensors

Selecting a sensor In order to read the data that an MQ sensor acquires we first need an MQ sensor. There are four different sensors OLIMEX distributes. The hardware and software setup of each of them is identical. The power consumption also. However, each of them is suitable for the detection of a different set of substances in the air.

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TECHNICAL DATA MQ-7 GAS SENSOR

Sensor Chip SHT1x V4 – for which this datasheet applies – features a nd a temperature sensor the chip contains an amplifier, A/D converter, OTP memory and a digital interface. V4 sensors can be identified by the alpha-numeric traceability code on the sensor cap – …

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TECHNICAL DATA MQ-7 GAS SENSOR

Ro: sensor resistance at 100ppm CO in the clean air. Rs: sensor resistance at various concentrations of sensitivity characteristics of the MQ-7 Standard circuit: As shown in Fig 2, standard measuring circuit of MQ-7 sensitive components consists of 2 parts. one is heating circuit having time control function (the

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TECHNICAL DATA MQ-9 GAS SENSOR - Electronicos Caldas

Ro: sensor resistance at 1000ppm LPG in the clean air. Rs: sensor resistance at various concentrations of gases. A MQ-9 1 10 100 1000 10000 ppm Rs/Ro LPG CO CH4 Air sensitivity characteristics of the MQ-9 A Standard circuit: As shown in Fig 2, standard measuring circuit of MQ-9 sensitive components consists of 2 parts. one

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TECHNICAL DATA MQ-3 GAS SENSOR - Components101

Rs:sensor resistance at various concentrations of gases. is shows the typical dependence of the MQ-3 on temperature and humidity. Ro: sensor resistance at /L of Alcohol in air at 33%RH and 20 ℃ Rs: sensor resistance at /L of Alcohol at different temperatures and humidities. MQ-3 1 10 100 1 mg/L 10 R s / R o ...

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