1 db Nagy IT MQ-4 gázmetán érzékelő modul MQ4 arduino érzékelőhöz
1PCS Great IT MQ-4 gas methane sensor module MQ4 for arduino sensor
Introduction to MQ-4 sensor:
The gas-sensitive material used in the MQ-4 gas sensor is tin dioxide (SnO2) with low conductivity in clean air. When there is combustible gas in the environment where the sensor is located, the conductivity of the sensor increases with the increase of the combustible gas concentration in the air. Using a simple circuit, the change in conductivity can be converted into an output signal corresponding to the gas concentration. The MQ-4 gas sensor has a high sensitivity to methane, as well as good sensitivity to propane and butane. This sensor can detect a variety of flammable gases, especially natural gas, and is a low-cost sensor suitable for a variety of applications.
Module application:
Suitable for methane gas, natural gas, and other monitoring devices in households or factories, and can test 300 to 10000ppm of natural gas and methane;
Module features:
1. Adopt high-quality double-panel design, with power indication and TTL signal output indication;
2. With doing switch signal (TTL) output and AO analog signal output;
3. TTL output valid signal is low level. (The signal light is on when the output is low, and it can be directly connected to the single-chip microcomputer or relay module)
4. The voltage of analog output, the higher the concentration, the higher the voltage.
5. It has good sensitivity to methane and natural gas detection.
6. There are four screw holes for easy positioning;
7. Product dimensions: 32(L)*20(W)*22(H)
8. It has a long service life and reliable stability
9. Fast response and recovery characteristics
Electrical performance:
Input voltage: DC5V Power consumption (current): 150mA
DO output: TTL digital quantity 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 powered on, it needs to be warmed up for about 20S to stabilize the measured data. It is normal for the sensor to heat up, because there is a heating wire inside, if it is hot, it will not be normal.
Wiring:
1. VCC: Connect to the positive pole of the power supply (5V)
2. GND: connect to the negative pole of the power supply
3. DO: TTL switch signal output
4. AO: analog signal output
1005003526792019 - fullstar