PM01, PM2.5, PM10, Temperature and Humidity with HTTP protocol

Technical parameter

• Power supply : 12V-24VDC
• Average Current : <85 mA
• PM2.5/10 Detect Range : 0-300ug/m 3
• PM2.5/10 Accuracy : <Reading ±10%(25°C)
• Temperature Detect Range : -40°C-80°C
• Temperature Accuracy : ±0.5°C
• Humidity Detect Range : 0-100 %RH
• Humidity Accuracy : ±3%RH
• Stability : <2%F·S
• Non-linear : <1%F·S
• Response Time : ≤15S
• Pre-heat time : 2min(Work)10min(Max Accuracy)
• Output Signal : RS485
• Power Consumption : ≤1.2W(@12V DC, 25°C)
• Working Air Pressure : 0.9-1.1atm
• Range of measurement : 0.3~1.0；1.0~2.5；2.5~10 μ m
• Counting Efficiency : 50%@0.3μ m 98%@>=0.5μ m
• Effective Range（PM2.5 standard) : 0~500 μ g/m3
• Maximum Range（PM2.5 standard）* : ≥1000 μ g/m3
• Resolution : 1 μ g/m3
• Maximum Consistency Error (PM2.5 standard data)* : ±10%@100~500μ g/m3 ±10μ g/m³@0~100μ g/m3
• Standard Volume : 0.1 L
• Single Response Time : ＜1 s
• Total Response Time : ≤10 s
• Active Current : ≤100 mA
• Standby Current : ≤200 μ A
• Interface Level : L <0.8 @3.3 H >2.7@3.3 V
• Working Temperature Range : -10~+60 ℃
• Working Humidity Range : 0~99%
• Storage Temperature Range: -40~+80 ℃
• MTTF : ≥3 Y

Interface Description

Communication protocol

Register Address

Communication example

          Read Device Address 0x01's PM2.5 Value

Inquiry Frame

 Answer Frames

How to calculate PM2.5

          0006 H(Hexadecimal)= 6 => PM2.5 = 6ug/m3

Read Device Address 0x01's PM10 Value

Inquiry Frame

 Answer Frames

How to calculate PM10

          0007H(Hexadecimal) = 7 => PM10 = 7ug/m3

Read Device Address 0x01's PM2.5/10 value

Inquiry Frame

 Answer Frames

How to calculate PM2.5/PM10

          PM 2.5 : 0005 H(Hexadecimal)= 5 => PM2.5 = 5ug/m3

          PM 10 : 0005 H(Hexadecimal)=5=>PM10=5ug/m3

Read the temperature and humidity PM2.5/10 concentration value of the device address 0x01

Inquiry Frame

 Answer Frames

How to calculate PM2.5/PM10

          Temperature : 0134 H (hexadecimal)= 308 => temperature=30.8°C

          Humidity: 023A H (hexadecimal)=570=>humidity=57.0%RH

          PM 2.5 : 0007 H(Hexadecimal)= 7 => PM2.5 = 7ug/m3

          PM 10 : 0007 H(Hexadecimal)= 7 => PM10 = 7ug/m3