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PM100/TSP Air Particle Dust Sensor Detector SDS198 Laser Digital Output SAMPLE
Overview
The PM100 sensor, also known as total suspended particulate (TSP) sensor, using principle of laser scattering, can get the particle concentration between 1 to 100μm in the air. The SDS198 with digital output and built-in fan is stable and reliable.
Characteristics
1. Accurate and Reliable: laser detection, stable, good consistency;
2. Quick response: response time is less than 10 seconds when the scene changes;
3. Easy integration: UART output (or IO output can be customized), fan built-in;
4. High resolution: resolution of 1μg/m3;
5.Certification: products have passed CE/FCC/RoHS certification.
Scope of application
TSP monitoring; Dust monitoring; Purification monitoring; Environmental monitoring of road, factory, mine, and construction site.
Working principle
Using laser scattering principle:
Light scattering can be induced when particles go through the detecting area. The scattered light is transformed into electrical signals and these signals will be amplified and processed. The number and diameter of particles can be obtained by analysis because the signal waveform has certain relations with the particles diameter.
Technical parameters
|
No |
Item |
Parameter |
Note |
|
1 |
Measurement parameters |
PM100 |
|
|
2 |
Range |
0-20mg/m3 |
|
|
3 |
Rated voltage |
5V |
|
|
4 |
Rated current |
70mA±10mA |
|
|
5 |
Sleep current |
<4 mA |
Lase&Fan sleep |
|
6 |
Temperature range |
Storage environment：-20 ~ +60℃ |
|
|
Work environment：-10 ~ +50℃ |
|
||
|
7 |
Humidity range |
Storage environment：Max 90% |
|
|
Work environment：Max 70% |
|
||
|
8 |
Air pressure |
86KPa~110KPa |
|
|
9 |
Corresponding time |
< 6s |
|
|
10 |
Serial data output frequency |
1Hz |
|
|
11 |
Sensitivity |
1μg /m3 |
|
|
12 |
Relative error |
Maximum of ±20% and ±30μg/m3 |
25℃, 50%RH |
|
13 |
Product size |
71x70x23mm |
|
|
14 |
Certification |
CE/FCC/RoHS |
|
Power requirement
Power Voltage：4.7~5.3V
Power supply：>1W
Supply voltage ripple：<20mV
About service life
Service life is the key parameter of laser dust sensor. The laser diode in this sensor has high quality and its service life is up to 8000 hours. If you need real-time data (such as detector), you can use the default configuration that measures at the frequency of 1time per second. On the occasion of real-time demand is not high (such as filter, air quality monitoring, etc.), you can use the discontinuous working method to prolong the service life. For example, you can start the sensor for 30 seconds per minutes. If you have any other requirements, please contact us, we are willing to serve for manufacturers and developers.
Product specifications
1.Product size
L*W*H=71*70*23mm
2.Interface specification
|
No |
Name |
Comment |
|
1 |
NC |
Not Connect |
|
2 |
1μm |
Reserved |
|
3 |
5V |
5V Input |
|
4 |
2.5μm |
Reserved |
|
5 |
GND |
Ground |
|
6 |
R |
RX of UART（TTL）@3.3V |
|
7 |
T |
TX of UART（TTL）@3.3V |
PS：The distance between each pin is 2.54mm.
The UART communication protocol
Bit rate ：9600
Data bit ：8
Parity bit：NO
Stop bit ：1
Data Packet frequency: 1Hz
|
The number of bytes |
Name |
Content |
|
0 |
Message header |
AA |
|
1 |
Command Byte. |
CF |
|
2 |
DATA 1 |
Reserved |
|
3 |
DATA 2 |
Reserved |
|
4 |
DATA 3 |
PM100 Low byte |
|
5 |
DATA 4 |
PM100 High byte |
|
6 |
DATA 5 |
ID byte 1 |
|
7 |
DATA 6 |
ID byte 2 |
|
8 |
Check-sum |
Check-sum |
|
9 |
Message tail |
AB
|
Check-sum: Check-sum=DATA1+DATA2+...+DATA6
PM100 value:PM100(μg/m3)=PM100 High byte*256+PM100 low byte
