Fluke 985 Particle Counter

Brand: Fluke Corporation

The Fluke 985 Particle Counter is the preferred choice for HVAC and IAQ professionals.

From filter testing to IAQ investigations, the Fluke 985 is the portable solution for determining airborne particle concentrations.

Use the Fluke 985 to immediately respond to occupant complaints, or as part of a comprehensive preventive maintenance program.
  • Six channels and particle size range of 0.3 - 10.0 µm: Assures accurate measurements even for critical locations requiring ISO Class 5 – 9 certification
  • Ultra-lightweight and ergonomic design: Promises easy single-hand operation in tight or awkward spaces with less operator fatigue
  • Long battery life: Ten hours of standard-use battery life to last a full work day 
  • Large 3.5 QVGC Color display: Easy navigation and viewing with the intuitive icons and large font options
  • 10,000 record storage: Quick access to historical data 
  • On-screen data presentation: Data can be viewed in a traditional tabular or trend graph view at the user’s preference
  • Personalized setting and configurations: Customizable settings for the display, sample methods, and alarm settings for sample count
  • Data export options: Download data to a PC using a USB memory stick, USB cable or Ethernet connection. No special software is required to download or view data
  • Option password control: Confirms security when required
  • USB/Ethernet charge cradle: Assures device is always ready to go when needed



  • 0.3 μm
  • 0.5 μm
  • 1.0 μm
  • 2.0 μm
  • 5.0 μm
  • 10.0 μm

Flow Rate

  • 0.1 cfm
  • 2.83 L/min

Counting Efficiency

  • 50 % @ 0.3 μm, 100 % for particles > 0.45 μm (per ISO 21501)

Concentration Limits

  • 10 % at 4,000,000 particles per ft³

Communication Mode

  • USB or Etheret


  • PSL particles in air

Operating Temperature

  • 50° F to 104° F
  • 10° C to 40° C

Sample Inlet

  • Isokinetic probe
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