产品属性
Introduction to MQ-9 sensor:
The gas sensitive material used in the MQ-9 gas sensor is tin dioxide (SnO2), which has low conductivity in clean air. Carbon monoxide was detected at low temperature (1.5V heating) in a high-low temperature cycle. The electrical conductivity of the sensor increased with the increase of carbon monoxide gas concentration in the air. Methane and propane were detected at high temperature (5.0V heating) and the stray gases adsorbed at low temperature were cleaned. A simple circuit can be used to convert the change in conductivity into an output signal corresponding to the concentration of the gas. The MQ-9 gas sensor is highly sensitive to carbon monoxide, methane and liquefied gases. The sensor can detect a variety of gases containing carbon monoxide and flammability, making it a low-cost sensor suitable for a variety of applications.
Module application:
Suitable for gas leakage monitoring device in home or factory, suitable for carbon monoxide, combustible gas and other monitoring devices, it can test the range of carbon monoxide 10 to 1000ppm CO and combustible gas 100 to 10000ppm
Module features:
1. High quality double panel design with power supply indication and TTL signal output indication;
2. DO switching signal (TTL) output and AO analog signal output;
3. TTL output effective signal is low level. (When the output is low, the signal light is on and can be directly connected to the single chip microcomputer or relay module)
4. The higher the analog output voltage is, the higher the voltage will be.
5. Good sensitivity to carbon monoxide detection.
6. Four screw holes for easy positioning;
7. Overall dimensions: 32(L)*20(W)*22(H)
8, with a long service life and reliable stability
9. Quick response and recovery features
Electrical performance:
Input voltage: DC5V power consumption (current) : 150mA
DO output: TTL digital quantities 0 and 1 (0.1 and 5V)
AO output: 0.1-0.3V (relatively pollution-free), the highest concentration voltage is about 4V
Special reminder: after the sensor is energized, it takes about 20 seconds to preheat, and the measured data will be stable. The sensor heating is a normal phenomenon, because there is an electric heating wire inside, if it is hot, it will be abnormal.
Test procedure:
Functions: This version of the test program
Using chip: AT89S52
Crystals: 11.0592 MHZ
Baud rate: 9,600
Compile environment: Keil
Arvin
United States
SD
Length of registration:2 years
AhmedFikery
China
Shanghai
Length of registration:4 years
C2178 Grigory Shalvaryan
China
东莞
Length of registration:2 years
M.H.M FAZIL
China
东阳市
Length of registration:4 years
黄小姐
China
东莞市常平镇
Length of registration:8 years
Aram Parsamyan
China
Shi jia Zhuang ( 石家庄 )
Length of registration:11 years
Ashot Stepanyan
China
东莞 (Dongguan)
Length of registration:9 years
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Mq-9 CARBON monoxide Module Combustible gas sensor detection alarm module
Mq-9 CARBON monoxide Module Combustible gas sensor detection alarm module has several brands around the world that may have alternate names for Mq-9 CARBON monoxide Module Combustible gas sensor detection alarm module due to regional differences or acquisition. Mq-9 CARBON monoxide Module Combustible gas sensor detection alarm module may also be known as the following names: