HK Instruments Siro-MOD-PM-A Indoor Air Quality Transmitter (PM: 0–500 μg/m³)

Measurement ranges:

+ PM1/PM2.5/PM10:  0–50 μg/m³ / 0–500 μg/m³ (selectable via jumper); IAQ index: 1-5 (WHO rating)

Communication: RS-485 Modbus (RTU)

Accuracy: 

+ PM: 

0…100 μg/m3: 

PM2.5: ±15 μg/m3(at 25 ⁰C ±5 ⁰C) 

PM1/PM10*: ±25 μg/m3 (at 25 ⁰C ±5 ⁰C) 

100…1000 μg/m3: 

PM2.5: ±15 % (at 25 ⁰C ±5 ⁰C) 

PM1/PM10*: ±25 % (at 25 ⁰C ±5 ⁰C) 

*PM1 and PM10 values are calculated from PM2.5 measurement reading with the default particle distribution. 

Measuring elements: 

+ PM: Laser-based light scattering particle sensing 

Measuring units: 

+ PM1/2.5/10: μg/m3 

Calibration (CO2): Automatic self-calibration, ABC LogicTM

Supply voltage: 24 VDC/VAC ±10 %

Output signal 1–4: 0...10 V (optional 2...10 V / 0...5 V, display or configuration tool required); Optional 4...20 mA

Linear to selected measurement (CO2, VOC, PM, rH or Temp) 

Operating temperature: 0...50 °C

Protection standard: IP20

Noted:

PM = Particulate Matter sensor

A = mA output