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Met One- NPM 3 Network Particulate Monitor

The Met One NPM 3 Network Particulate Monitor is a compact, low-power particulate monitoring system designed for continuous PM1, PM2.5, and PM10 measurement with seamless network and cloud connectivity.

  • Measures PM1.0, PM2.5, and PM10 using laser nephelometer technology
  • Plug & play network integration with COMET Cloud Plus and CCS+
  • Automatic humidity control for stable and accurate data
  • Ideal for IoT, smart cities, and neighborhood air quality monitoring

Description

Met One – NPM 3 Network Particulate Monitor is a compact, low-power air quality monitoring solution designed for continuous measurement of particulate matter in networked environments. Using a forward light scatter laser nephelometer, the NPM 3 delivers accurate and stable measurements across PM1.0, PM2.5, and PM10 size fractions with a wide measurement range and high sensitivity. Its brushless diaphragm pump, long-term optical stability, and automatic humidity control ensure reliable performance in normal ambient conditions, even during extended outdoor operation.

Built with modern monitoring needs in mind, the NPM 3 features true plug-and-play functionality and seamless network integration, making it ideal for IoT applications, smart cities, and neighbourhood air quality monitoring. Compatibility with COMET Cloud Plus and CCS+ allows real-time data access across smart devices, while the weather-resistant design, low power consumption, and 24-month service interval reduce maintenance requirements. With excellent accuracy, flexible calibration via “K” factor adjustment, and an affordable price point, the NPM 3 offers an efficient and scalable solution for distributed particulate monitoring networks.

Features

  • Plug & Play functionality.
  • Network integration without a hitch.
  • Compatible with COMET Cloud Plus and CCS+, cloud data is accessible on all smart devices.
  • Ideal for IoT applications, smart cities, and neighbourhood monitoring.
  • Nephelometer with filtered purge air system that has been field tested.
  • Automatic control of humidity.
  • Weather-resistant Cover.
  • Low Power and Compact.
  • Service Interval of 24 months.
  • Excellent Accuracy and Stability Over Time.
  • Flexible “K” factor.
  • Low price.

Specifications

Parameter Specification
Measurement Principles: Particulate concentration by forward light scatter laser nephelometer.
Available Cut Points: PM1.0 sharp-cut cyclone (SCC 111), PM2.5 sharp-cut cyclone (SCC 112), PM10 sharp-cut cyclone (SCC 110)
Measurement Range: 0 to 100 mg/m3 (0 to 100,000 mg/m3)
Measurement Sensitivity: 0.001 mg/m3 (1 mg/m3)
Nephelometer Accuracy: ± 5% traceable standard with 0.54um PSL.
Particle Size Sensitivity: 0.1 to 100 micron. Optimal sensitivity 0.5 to 10 micron particles.
Long Term Stability: 5% with clean optics.
Laser Type: Diode Laser, 5 mW, 670 nm. Visible red.
Flow Rate: 2.0 liters/minute
Pump Type: Brushless Diaphragm
Power: 11 – 40 VDC @ 1.5 A maximum.
Power Consumption: 350 mA (no heater) 1.1 A (with heater) @ 15 VDC.
Operating Temperature: 0 to +50°C . (Ambient Temperature Sensor Range -30 to +50°C).
Ambient Humidity Range: 0 to 90% RH, non-condensing.
Humidity Control: Automatic 12 Watt inlet heater module controlled to sample RH, with set point.
Factory Service Interval: 24 Months typical, under continuous use in normal ambient air.
Mounting Options: Pole mount bracket standard. Optional mounting tripod.
Purge Filter: 0.2 micron
Pump Protection Filter: 5.0 micron
Unit Weight: 2.7 kg (6 lbs.)
Unit Dimensions: 54.6 cm high, 38.1 cm wide, 17.8 cm deep (21.5” x 15” x 7”)

Data Sheet

Met One- NPM 3 Network Particulate Monitor (1)

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