Ks0047 keyestudio MQ135 Air Quality Sensor: Difference between revisions
Jump to navigation
Jump to search
Keyestudio (talk | contribs) |
Keyestudio (talk | contribs) |
||
| (6 intermediate revisions by the same user not shown) | |||
| Line 1: | Line 1: | ||
<br> | |||
==Introduction== | ==Introduction== | ||
MQ135 adopts SnO2 as its gas sensitive material because SnO2 has low electrical conductivity in the clean air. So when surrounded by polluted air, the electrical conductivity of MQ135 will increase with the increase of pollutants, and the change in electrical conductivity can be converted to corresponding output signal. | MQ135 adopts SnO2 as its gas sensitive material because SnO2 has low electrical conductivity in the clean air. <br> | ||
So when surrounded by polluted air, the electrical conductivity of MQ135 will increase with the increase of pollutants, and the change in electrical conductivity can be converted to corresponding output signal. <br> | |||
MQ135 has a high sensitivity to Ammonia, sulfide, | MQ135 has a high sensitivity to Ammonia, sulfide, benzene vapor, smoke and other harmful gas. <br> | ||
<br>[[File: | It can detect various harmful gases, making it a cost-effective choice suitable for multiple applications.<br> | ||
<br>[[File:KS0040 (5).jpg|500px|frameless|thumb]]<br> | |||
<br> | |||
==Specification== | |||
* Product model: MQ135 | |||
* Product type: Semiconductor gas sensor | |||
* Target gas: Ammonia; methylbenzene; hydrogen | |||
* Operating voltage: 5V | |||
* Heater voltage: VH 5.0V±0.2V AC or DC | |||
* Load resistance: Adjustable RL | |||
* Heater power consumption: PH ≤900mW | |||
* Sensitivity: S Rs(in air)/Rs(100ppmNH3)≥5 | |||
* Concentration slope: α ≤0.6 (R100ppm/R50ppm NH3) | |||
* Standard testing temperature/humidity: 20℃±2℃/65%±5%RH | |||
* Standard testing circuit: Vc:5.0V±0.1V; VH: 5.0V±0.1V | |||
* Preheating time: ≧48H | |||
<br> | |||
==Connection Diagram == | ==Connection Diagram == | ||
<br>[[File:Ks0040-1.png|700px|frameless|thumb]]<br> | |||
<br> | <br> | ||
==Sample Code == | ==Sample Code == | ||
| Line 45: | Line 46: | ||
int sensorValue = analogRead(A0); | int sensorValue = analogRead(A0); | ||
Serial.println(sensorValue, DEC); | Serial.println(sensorValue, DEC); | ||
}</pre> | } | ||
</pre> | |||
<br> | |||
==Result== | |||
<br>[[File:Ks0042-1.png|600px|frameless|thumb]]<br> | |||
Turn on Serial monitor to check the pollution index of the air surrounds you:<br> | |||
<br>[[File:473.png|700px|frameless|thumb]]<br> | |||
<br> | |||
==Resources == | ==Resources == | ||
'''Video''' | * '''Video'''<br> | ||
http://video.keyestudio.com/ks0047/ | |||
* '''PDF and Code'''<br> | |||
https://fs.keyestudio.com/KS0047 | |||
<br> | |||
==Buy from == | ==Buy from == | ||
*[https://www.keyestudio.com/free-shipping-keyestudio-mq-135-sno2-benzene-sulfide-air-quality-sensor-module-for-arduino-p0116.html '''Official Website'''] | |||
*[https://www.aliexpress.com/store/product/Free-shipping-Air-sensor-mq135-sensor-module/1452162_2052827560.html?spm=2114.12010612.8148356.37.77321414ddNxgj '''Shop on aliexpress'''] | |||
[[Category: Sensor]] | [[Category: Sensor]] | ||
Latest revision as of 14:07, 7 January 2021
Introduction
MQ135 adopts SnO2 as its gas sensitive material because SnO2 has low electrical conductivity in the clean air.
So when surrounded by polluted air, the electrical conductivity of MQ135 will increase with the increase of pollutants, and the change in electrical conductivity can be converted to corresponding output signal.
MQ135 has a high sensitivity to Ammonia, sulfide, benzene vapor, smoke and other harmful gas.
It can detect various harmful gases, making it a cost-effective choice suitable for multiple applications.
.jpg)
Specification
- Product model: MQ135
- Product type: Semiconductor gas sensor
- Target gas: Ammonia; methylbenzene; hydrogen
- Operating voltage: 5V
- Heater voltage: VH 5.0V±0.2V AC or DC
- Load resistance: Adjustable RL
- Heater power consumption: PH ≤900mW
- Sensitivity: S Rs(in air)/Rs(100ppmNH3)≥5
- Concentration slope: α ≤0.6 (R100ppm/R50ppm NH3)
- Standard testing temperature/humidity: 20℃±2℃/65%±5%RH
- Standard testing circuit: Vc:5.0V±0.1V; VH: 5.0V±0.1V
- Preheating time: ≧48H
Connection Diagram
Sample Code
/*
AnalogReadSerial
Reads an analog input on pin 0, prints the result to the serial monitor
This example code is in the public domain.
*/
void setup() {
Serial.begin(9600);
}
void loop() {
int sensorValue = analogRead(A0);
Serial.println(sensorValue, DEC);
}
Result
Turn on Serial monitor to check the pollution index of the air surrounds you:
Resources
- Video
http://video.keyestudio.com/ks0047/
- PDF and Code
https://fs.keyestudio.com/KS0047