APDA-372 Ambient Dust Monitor


The APDA-372 dust monitor is specifically designed for indoor and outdoor air quality measurements and provide continuous and simultaneous measurements of PM1, PM2.5, respirable fractions (PM4), thoracic fractions (PM10), inhalable fractions (TSP), the particle number, and (upon request) the particle size distribution in 32 size classes per decade within the particle size range of 0.18 – 18 µm. The APDA-372 uses the recognized measurement technology of optical light scattering and is equipped with a white LED light source with highly stable output and long lifetime. The system is also equipped with a filter holder for the insertion of an absolute filter (47 or 50 mm in diameter). This enables the user to perform on-site gravimetric correlation or subsequent analysis of the composition of the aerosol. The APDA-372 can be connected to an isokinetic sampling probe that measures emissions in exhaust air ducts. The volume flow is 5 L/min. The APDA-372 is additionally equipped with sensors for measuring environmental conditions, such as temperature, atmospheric pressure, and relative humidity.


  • Continuous and simultaneous real-time measurement of multiple PM values
  • Additional information based on particle number concentration
  • Adjustable time resolution from > 1 s to 24 h
  • Light source: LED with high stability and long lifetime
  • Long service life
  • Low maintenance, possible to verify calibration on site
  • Intuitive and easy to operate
  • Reliable function
  • No radioactive material
  • No consumables
  • Reduces your operating expenses

Hergestellt von HORIBA



USB, ethernet, RS232/485, Wi-Fi

measurement range (size)

0.18 - 100 µm (3 sizes)

measuring principle

optical light-scattering

measurement range

0 - 20000 particles/cm3

time resolution

1 s - 24 h

volume flow

5 l/min

data acquisition

digital, 20 MHz processor, 256 raw data channels

light source


power consumption

100 W

user interface

touch screen, 800 • 480 pixels, 7"

power supply

115 - 230 V, 50 - 60 Hz


table housing, optionally with mounting brackets for rack-mounting


180.5 • 450 • 320 mm, 19" compatible, 4 HE, 84 TE


9.3 kg

operating system

Windows embedded

data logger storage

4 GB

measurement range (mass)

0 - 1500 µg/m3