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.
ThisAlcohol Sensor MQ3is suitable for detecting alcohol concentration on your breath, just like your common breathalyzer. It has a high sensitivity and fast response time. Sensor provides an analog resistive output based on alcohol concentration. The drive circuit is very simple, all it needs is one resistor. A simple interface could be a 0-3.3V ADC.
Methane CNG Gas Sensor MQ4 is a simple-to-use compressed natural gas (CNG) sensor, suitable for sensing natural gas (composed of mostly Methane [CH4]) concentrations in the air. The MQ-4 can detect natural gas concentrations anywhere from 200 to 10000ppm. This sensor has a high sensitivity and fast response time. The sensor’s output is an analog resistance. The drive circuit is very simple; all you need to do is power the heater coil with 5V, add a load resistance, and connect the output to an ADC.
|Sensitivity||High Sensitivity To LPG, Natural Gas, Town Gas|
|Heater voltage||5.0 V|
|High Excluding pins||17 Mm|
We are instrumental in presenting qualitativeLPG & Natural GAS Sensor MQ5which ensures optimum safety and security in the industries and domestic sector. These easy to install are highly suitable for detecting the presence of natural gas, LPG, fumes, smoke and town gas. The sensor in this system is highly reliable and is provided with a simple drive circuit for facilitating easy operations.Features
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.
|Operating Temperature||10dg-50dg C|
|Power Consumption||150ma At 5v|
|Detection Range||100-10,000 Ppm|
|Response time||Very Fast -10s|
|Standard Encapsulation||Bakelite (Black Bakelite)|
|Detection Gas||Isobutane, Butane, LPG|
|Concentration||300-10000ppm ( Butane, Propane, LPG)|
|Preheat time||Over 48 hours|
|Loop Voltage Vc||less than equal to 24V DC|
|Load Resistance RL||Adjustable|
|Measuring Range||20-10,000 ppm|
|Heater Power||5V DC or AC|
MQ-7 is a Carbon Monoxide (CO) sensor, suitable for sensing Carbon Monoxide concentrations(PPM) in the air. The MQ-7 sensor can meassure CO concentrations ranging from 20 to 2000ppm. This sensor has a high sensitivity and fast response time. The sensor's output is an analog resistance. The drive circuit is very simple , just a voltage devider; all you need to do is power the heater coil with 5V DC or AC , add a load resistance, and connect the output to an ADC or a simple OPAMP comparator.
|Detection of gas||Carbon Gas|
|The heating voltage||5V +/- 0.2V AC/DC|
|Working temperature||-10 to 50 degC (nominal temperature 20degC)|
|Loop voltage||10V (maximum DC 15V|
|Load resistance||10K (adjustable)|
|Detection concentration range||10-1000ppm|
|Humidity||95% RH (nominal humidity 65% RH)|
MQ7 CO gas sensor
Size: 35mm × 22mm × 18mm
Detection of gas: carbon gas
1, the heating voltage: 5 ± 0.2V (AC · DC)
2, Working current: 140mA
3, loop voltage: 10V (maximum DC 15V)
4, load resistance: 10K (adjustable)
5, detection concentration range: 10-1000ppm
6, clean air voltage: ≤1.5V
7. Sensitivity: ≥3%
8. Response time: ≤1S (preheat 3-5 minutes)
9, Response time: ≤30S
10, the element power: ≤0.7W
11, the working temperature: -10 ~ 50 ℃ (nominal temperature 20 ℃)
12, Humidity: 95% RH (nominal humidity 65% RH
|Detection Range||100-10,000 ppm|
|Application||Hydrogen Gas sensing|
|Working voltage||+5V DC|
|Size||32 mm X22mm X27mm|
|Output||Dual signal output (TTL level output and analog output)|
|Minimum Order Quantity||1 Piece|
|Sensitivity||High to Methane,Propene and CO|
|High Heater Temp||5V for Methane,Propane|
|Low Heater Temp||1.5V for CO|
|Concentration||o 10-1000ppm CO o 100-10000ppm combustible gas|
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||Detecting a wide range of gases, including NH3, NOx, alcohol, benzene, smoke and CO2|
|High sensitivity||Ammonia, Sulfide And Benze|
|Detection Range||10 - 300 Ppm Nh3, 10 - 1000 Ppm Benzene, 10 - 300 Alcohol|
|Dimensions||18 Mm Diameter, 17 Mm High Excluding Pins, Pins - 6 Mm High|
|Working voltage||DC 5V|
|Preheat time||Over 20s|
|Dimension||32mm x 22m x 27mm(HIGH 27mm)|
Description: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.
Gas Sensor(MQ2)module is useful for gas leakage detecting(in home and industry). It can detect LPG, i-butane, methane, alcohol, Hydrogen, somke and so on. Based on its fast response time. measurements can be taken as soon as possible. Also the sensitivity can be adjusted by the potentiometer.
MQ-2 Semiconductor Sensor for Combustible Gas