HANWEI ELECTRONICS CO.,LTD MQ135 …

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. MQ135 1 10 10 100 1000 ppm Rs/Ro AIR CO2 CO Alcohol NH4 Tolueno Acetona SENSITIVITY ADJUSTMENT Resistance value of MQ135 is difference to various kinds and various concentration gases ...


Manual SparkFun Electronics

Fig2. MQ3 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 ...


MQ2 Gas Sensor User Manual Robotshop

MQ2 Gas Sensor User Manual Waveshare 1 MQ2 Gas Sensor User Manual 1. Features Sensitive gas Liquefied gas, propane and hydrogen Boost converter chip PT1301 Operating voltage Dimensions * Fixing hole size Operating principle: MQ2 gas sensor applies SnO2 which has a lower conductivity in the clear air as a gassensing …


Grove Gas Sensor (MQ5) User Manual

The Grove Gas Sensor(MQ5) module is useful for gas leakage detecting(in home and industry). It can detect H2, LPG, CH4, CO, Alcohol. Based on its fast response time.


Grove Gas Sensor (MQ2) User Manual

The Grove Gas Sensor(MQ2) module is useful for gas leakage detecting(in home and industry). It can detect H2, LPG, CH4, CO, Alcohol, Smoke, Propane. Based on its fast response time.


Gas Flow Meter Manual Alicat Scientific

20200220· OPERATING MANUAL M · MW · MS · MQ · MB. 2 IntroductIon Thank you for purchasing an Alicat flow meter. If you have any questions about operating it, or if something is not working as expected, please let us know. We are eager to help you in any way possible. Alicat Scientific, Inc. info • 7641 N Business Park Drive, Tucson, AZ 85743 …


Manual SparkFun Electronics

Fig2. MQ6 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 ...


Operation and Parts Manual Multiquip Inc

Some products do not have an electronic version of an Operations and Parts manual available online. If you do not see your model listed, please contact the MQ Technical Publications Dept via email mqtechpubs with your unit model number and serial number.. The information and specifications included in this publication were in effect at the time of …


MQ6 Gas Sensor Pinout, Specs, Equivalent, Circuit Datasheet

20180420· The procedure to measure PPM using MQ sensor is the same but few constant values will vary based on the type of MQ sensor used. Basically we need to look into the (Rs/Ro) VS PPM graph given in the MQ6 datasheet, and also shown below. The value of Ro is the value of resistance in fresh air and the value of Rs is the value of resistance in Gas concentration. …


TECHNICAL DATA MQ135 GAS SENSOR Olimex

Structure and configuration of MQ135 gas sensor is shown as Fig. 1 (Configuration A or B), 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 Parts Materials g n i s n e s s a 1G …


MQ3 Gas Sensor User Manual

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MQ5 Gas Sensor User Manual

MQ5 Gas Sensor User Manual 1. Features Sensitive gas Liquefied gas, natural gas and coal gas Boost converter chip PT1301 Operating voltage Dimensions * Fixing hole size Operating principle: MQ5 gas sensor applies SnO2 which has a lower conductivity in the clear air as a gassensing material. In an atmosphere where there may be …


How to Use the MQ3 Alcohol Sensor | Microcontroller Tutorials

Here we see the different curves for each gas the MQ3 can detect in a loglog plot. Rs is the resistance of the sensor at target gas while R0 is the resistance of the sensor when only mg/L of alcohol is present in air. Determining RS/R0. We can use the fact (from the graph above) that the RS/R0 ratio is a constant 60 in clean air. Also, by ...


MQ5 Gas Sensor User Manual RobotShop

MQ5 Gas Sensor User Manual 1. Features Sensitive gas Liquefied gas, natural gas and coal gas Boost converter chip PT1301 Operating voltage Dimensions * Fixing hole size Operating principle: MQ5 gas sensor applies SnO2 which has a lower conductivity in the clear air as a gassensing material. In an atmosphere where there may be …


MQ4 Semiconductor Sensor for Natural Gas

MQ4 Semiconductor Sensor for Natural Gas Sensitive material of MQ4 gas sensor is SnO 2, 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. Please use simple electrocircuit, Convert change of conductivity to correspond output signal of gas concentration. …


MQ Sensors Library user manual MQ Sensors Library ...

View MQ Sensors Library user manual from ANÁLISIS MODELOS EC at UNAM MX. MQ Sensors Library user manual By: Miguel Angel Califa …


Grove Gas Sensor(MQ3) Seeed Wiki

For detailed information about the MQ3 sensor, please refer to the datasheet provided in Resources section. Platforms Supported ¶ Arduino Raspberry ArduPy; Caution. The platforms mentioned above as supported is/are an indication of the module''s software or theoritical compatibility. We only provide software library or code examples for Arduino platform in most …


TECHNICAL DATA MQ3 GAS SENSOR SparkFun Electronics

Structure and configuration of MQ3 gas sensor is shown as Fig. 1 (Configuration A or B), 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 MQ3 have 6 pin …