The Dust Sensor DSM501A is a low cost, compact size dust sensor module that can be used to quantitative particle (> 1 micron) measurement. The sensor uses the principle of particle counter to measure the amount of dust in the air. It can be used to sense the tobacco smoke and pollen, house dust. The sensor also has a heater to prevent condensation from forming on the sensor lens. The DSM501A can be used in applications such as the air cleaner or air purifier. Users can use this sensor easily with sensor PWM output. Featured By RoboticsBD.
Product Images are shown for illustrative purposes only and may differ from the actual product.
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Dust Sensor DSM501A with Arduino, PM10 & PM2.5 Air Quality Monitoring- When it comes to Air quality monitoring; particles are defined by their diameter PM2.5 and PM10 particles. Now, you might be thinking what are PM2.5 and PM10 particles?
PM stands for Particulate Matter, and it’s also called particle pollution. Particles that are 10 microns or less in diameter are called (PM10) and particles that are 2.5 microns or less in diameter are called as PM2.5. Both PM2.5 and PM10 particles can be inhaled. But the fine particles PM2.5 pose the greatest health risk. These fine particles can get deep into lungs and some may even get into the bloodstream. Exposure to these particles can affect a person’s lungs and heart. So, I will be focusing more on the PM2.5 particles.
The DSM501A Dust sensor is one of the cheapest dust sensors on the market and it is capable of detecting PM2.5 as well as PM10 particles.
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Features:
- Low cost, compact size dust sensor module
- Used to quantitative particle (> 1 micron) measurement
- Principle of particle counter
- Can sense the tobacco smoke and pollen, house dust
- Consist of light emitting diode lamp, detector, signal amplifier circuit and heater
- Used in applications such as the air cleaner or air purifier
- Users can use this sensor easily with sensor PWM output
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Applications:
- Air cleaner
- Air purifier
- Other applications that require dust measurement
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| General Specification |
| Particle Size | > 1 micron |
| Measurement Range | 0 to 1000000 pcs/cm³ |
| Accuracy | ±20% |
| Response Time | 1 second |
| Power Supply | 5V DC |
| Operating Temperature | -10 to 50℃ |
| Storage Temperature | -20 to 60℃ |
| Shipment Weight | 0.020 kg |
| Shipment Dimensions | 10 × 10 × 3 cm |
Please allow 5% measuring deviation due to manual measurement.
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Documentation:
- Do not exceed the maximum operating voltage or current of the sensor.
- Do not operate the sensor in temperatures outside of the specified range.
- Do not expose the sensor to water or other liquids.
- The Dust Sensor DSM501A is a versatile tool that can be used in a variety of applications.
- The sensor is easy to use and can be installed by anyone with basic soldering skills.
- The DSM501A is a valuable tool for air quality monitoring and can be used to improve the air quality in your home or office.
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Hardware connection:
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Arduino sketch:
Copy and paste code below to a new Arduino sketch:
// Connect the Pin_3 of DSM501A to Arduino 5V
// Connect the Pin_5 of DSM501A to Arduino GND
// Connect the Pin_2 of DSM501A to Arduino D8
#include<string.h>
byte buff[2];
int pin = 8;//DSM501A input D8
unsigned long duration;
unsigned long starttime;
unsigned long endtime;
unsigned long sampletime_ms = 30000;
unsigned long lowpulseoccupancy = 0;
float ratio = 0;
float concentration = 0;
int i=0;
void setup()
{
Serial.begin(9600);
pinMode(8,INPUT);
starttime = millis();
}
void loop()
{
duration = pulseIn(pin, LOW);
lowpulseoccupancy += duration;
endtime = millis();
if ((endtime-starttime) > sampletime_ms)
{
ratio = (lowpulseoccupancy-endtime+starttime + sampletime_ms)/(sampletime_ms*10.0); // Integer percentage 0=>100
concentration = 1.1*pow(ratio,3)-3.8*pow(ratio,2)+520*ratio+0.62; // using spec sheet curve
Serial.print("lowpulseoccupancy:");
Serial.print(lowpulseoccupancy);
Serial.print(" ratio:");
Serial.print(ratio);
Serial.print(" DSM501A:");
Serial.println(concentration);
lowpulseoccupancy = 0;
starttime = millis();
}
}
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Package Includes:
1 x Dust Sensor DSM501A Air Quality Monitoring
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