Gas Sensors

Product Details:

Sensitive material of MQ135 gas sensor is SnO2, which with lower conductivity in clean air. When the target combustible gas exist, The sensors 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. MQ135 gas sensor has high sensitity to Ammonia, Sulfide and Benze steam, also sensitive to smoke and other harmful gases. It is with low cost and suitable for different application.

Used for family,Surrounding environment noxious gas detection device, Apply to ammonia, aromatics, sulfur, benzene vapor, and other harmful gases/smoke, gas detection, tested concentration range: 10 to 1000ppm

Product Details:

Sensitive material of MQ-5 gas sensor is SnO2, which with lower conductivity in clean air. When the target combustible gas exist, The sensors conductivity is more higher along with the gas concentration rising. The sensor convert change of conductivity to correspond output signal of gas concentration.

MQ-5 gas sensor has high sensitity to Methane, Propane and Butane, natural gas and could be used to detect both Methane and Propane.

Features:

• Support both the output digital value and the output analog value.
• High sensitivity to Combustible gas in wide range .
• Can detect liquefied gasMethane,Butane, Propane and natural gas .
• Adjustable Sensitivity , Stable Performance.
• Pin Connection: GND: Ground, Dout: digital output, Aout: analog output Vcc: 5V
• Applicable to a variety of platforms including Arduino / AVR / ARM.

Product Details:

The Analog CO/Combustible Gas Sensor(MQ9) module is useful for gas leakage detecting, it used the sensitive material SnO2, 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 1.5V). The sensors conductivity is more higher along with the gas concentration rising. When high temperature (heated by 5.0V), it detects Methane, Propane, etc. combustible gas and cleans the other gases adsorbed under low temperature. MQ-9 gas sensor has high sensitivity to Carbon Monoxide, Methane and LPG. The sensor could be used to detect different gases contains CO and combustible gases, it is with low cost and suitable for different application.

Application Idea:

• Domestic gas leakage detector
• Industrial gas detector
• Portable gas detector

 

Features:

• High sensitivity to Methane, Propane and CO
• Long life and low cost
• Simple drive circuit

Product Details:

MQ3 GAS Sensor is a very easy to use and very handy sensor. It is suitable for sensing Alcohol gas concentration. MQ3 Alcohol GAS Sensor can detect Alcohol gas concentrations anywhere from 200 to 10000 ppm. The MQ3 GAS sensor has a very hight sensitivity to Alcohol gas. The sensitive material of MQ3 Sensor is SnO2, which has lower conductivity in clean air. When the target alcohol gas exist, the sensor’s conductivity is higher along with the gas concentration rising. MQ3 GAS sensor has high sensitivity to Alcohol, and good resistance to disturb of gasoline, smoke and vapour. The sensor could be used to detect alcohol with different concentration, it is with low cost and suitable for different application.

Features of MQ3 Alcohol GAS Sensor:

• High sensitivity to Alcohol Rs (in air) Rs (0.4mg/l alcohol).
• Heater voltage = 5.0V

Application of MQ3 Alcohol GAS Sensor:

• Drunk Driver detection system
• Portable alcohol detector

Product Details:

The analog gas sensor - MQ2 is used in gas leakage detecting equipments in consumer and industry markets, this sensor is suitable for detecting LPG, i-butane, propane, methane ,alcohol, Hydrogen, smoke.It has a high sensitivity and fast response time.And the sensitivity can be adjusted by the potentiometer. 

Features:

• Wide detecting scope
• Fast response and High sensitivity
• Simple drive circuit
• Stable and long life

Product Details:

This is a very easy to use low cost semiconductor Gas sensor Module with analog and digital output. This module uses MQ4 Methane gas sensor as a gas sensing element. It requires no external components just plug in Vcc & ground pins and you are ready to go.For Digital output the threshold value can be easily set by an on-board potentiometer. Using this module you can easily interface MQ4 Methane (CNG) gas Sensor to any Microcontroller, Arduino or even Raspberry Pi.Since this Gas Sensor module is sensitive to Methane it is also small sensitivity to alcohol & smoke.

Specification of MQ4 GAS Sensor Module

• Power Supply: 5 Volts
• Interface Type: Analog & Digital
• High Sensitivity to Methane & small sensitivity to smoke & alcohol
• Low Cost.
• Stable & Long Life.
• On board Power indication.

The instruction of Wiring: 

• VCC: positive power supply (5V) 
• GND: power supply is negative
• DO: TTL switching signal output
• AO: analog signal output

Module Applications: 
Suitable for home or factory methane gas , natural gas and other monitoring devices to test natural gas, methane 300 to 10000ppm;

Product Details:

Sensitive material MQ-6 gas sensor is used to clean the air in the lower conductivity of tin dioxide (SnO2). When there is the environment in which the combustible gas sensor, conductivity sensor with increasing concentration of combustible gases in air increases. Using a simple circuit to convert the change in conductivity of the gas concentration corresponding to the output signal. MQ-6 gas sensor for propane, butane , liquefied petroleum gas sensitivity is high, natural gas and has a good sensitivity. This sensor can detect a variety of flammable gas , is a low-cost sensors for a variety of applications

Suitable for home or industrial LPG ( liquefied petroleum gas ) , butane , propane , LNG ( liquefied natural gas ) detection devices. Excellent resistance to ethanol vapor , smoke interference Module

Features :

• Using high-quality dual-panel design, with power indicator and TTL signal output instructions;
• The switching signal having a DO (TTL) output and analog output AO ;
• TTL output valid signal is low . ( Low-level signal when the output light can be directly connected to the microcontroller or relay module )
• 0 ~ 5V analog output voltage , the higher the concentration the higher the voltage.
• Propane , butane , LPG, LNG has a good detection sensitivity.
• There are four screw holes for easy positioning ;
• Product dimensions : 32 (L) * 20 (W) * 22 (H)
• Has a long life and reliable stability
• Rapid response and recovery characteristics

Product Details:

Features:

• With a signal output instructions.
• Dual signal output (TTL level output and analog output)
• TTL output valid signal for low level. (when the low output electric signal lights at 4. ordinary times, can be directly pick up SCM)
• Analog 0 ~ 5 v voltage, the higher the concentration, the higher the voltage.
• High sensitivity to hydrogen
• Can be resistant to ethanol steam, LPG (petroleum), smoke interference
• Has a long service life and reliable stability
• Quick response recovery features

Package included:

• 1 x MQ-8 Hydrogen Gas Sensor Module

Product Details:

 

MG-811 Carbon Dioxide Sensor Module for detecting Metal Oxide Sensor Carbon Dioxide (CO2), which needs to heat the tank to the specified level. With power supply This creates heat vapor and separates the CO2 from the air in general.

This sensor module has an MG-811 on-board as the sensor component. There is an on-board signal conditioning circuit for amplifying output signal and an on-board heating circuit for heating the sensor. The MG-811 is highly sensitive to CO2 and less sensitive to alcohol and CO. It could be used in air quality control, ferment process, in-door air monitoring application. The output voltage of the module falls as the concentration of the CO2 increases.

 

Additional Information:

• Item Code: MG811

Product Details:

This Carbon Monoxide (CO) gas sensor detects the concentrations of CO in the air and ouputs its reading as an analog voltage. The sensor can measure concentrations of 10 to 10,000 ppm.The sensor can operate at temperatures from -10 to 50°C and consumes less than 150 mA at 5V.

Specification:

• MQ7 CO gas sensor
• Material: Module
• Size: 35mm × 22mm × 18mm
• The heating voltage: 5 ± 0.2V (AC · DC)
• Clean air voltage: ≤1.5V
• Sensitivity: ≥3%
• Response time: ≤1S (preheat 3-5 minutes)
• Response time: ≤30S
• The element power: ≤0.7W