Fluke 985 Particle Counter
Fluke 985 Particle Counter

Fluke 985 Particle Counter

Pine Item #51223

Take a new look at indoor air quality.

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.

With the Fluke 985 you can:

  • Measure filter efficiency
  • Monitor industrial cleanrooms
  • Pre-screen indoor air quality and confidently work with IAQ specialists
  • Locate particle sources for remediation
  • Report the effectiveness of repairs to customers
  • Drive additional business by demonstrating the need for maintenance and repair

With a large screen, intuitive icons for navigation, and on-screen data presentation, the Fluke 985 allows users to run more tests quickly, with less time spent cycling through screens to obtain the data. The Fluke 985 is lightweight and easy to use in any position and with easy data export options using a USB cable, and a memory stick it’s easy to review and analyze the data anywhere and anytime.


Six channels and particle size range of 0.3 - 10.0 µm

Ultra-lightweight and ergonomic design for easy single-hand operation

Ten hours of standard-use battery life to last a full work day

Large 3.5 inch QVGC color display with backlight, intuitive icons, and large font options make for easy navigation and viewing

10,000 records stored in device for easy access to historical data

Data can be viewed in traditional tabular or trend graph at the user’s preference

Configurable display, sample methods, and alarm setting for sample size count (raw count, per cubic feet, cubic meter, or liter)

Data export to USB memory stick or direct connection to PC via USB cable. No special software required to view Excel compatible files

Ethernet enabled for accessing data via internet browser (Windows Explorer, Safari, and

USB/Ethernet charge cradle ensures the unit always ready for use

Administrator password control (optional) for added security

Meets ISO 21501, JIS B9921, and CE standards


Monitor cleanrooms

Investigate indoor air quality

Monitor gowning rooms

Test filter seals

Locate particle contamination sources

Monitor particle size distributions

Quantity must be 1 or more
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Technical Specifications 

Channels0.3 μm, 0.5 μm, 1.0 μm, 2.0 μm, 5.0 μm, 10.0 μm
Flow Rate0.1 cfm (2.83 L/min)
Light source775 nm to 795 nm, 90 mW class 3B laser
Count ModesRaw counts, #/m3, #/ft3, #/liter in Cumulative or Differential mode
Counting efficiency50% @ 0.3 μm; 100% for particles > 0.45 μm (per ISO 21501)
Zero Count1 count / 5 minute (JIS B9921)
Concentration Limits10% at 4,000,000 particles per ft3 (per ISO 21501)
Data Storage10,000 records (rotating buffer)
AlarmsCounts, low battery, sensor fail
Delay Time0 to 24 hours
Sample InletIsokinetic probe
SecurityAdministrator password control (optional)
Communication ModeUSB or Etheret
Dimensions (L x W x D )27.2 x 9.9 x 5.3 cm (10.7 x 3.9 x 2.1 in)
Weight0.68 kg (1.5 lb)
Power Adapter100 V AC to 240 V AC, 12 V DC, 2.5 A
Rechargeable BatteryLi-ion 7.4 V 2600 mAh; 10 hours typical use (5 hours continuous sampling) / 3.5 hours
CalibrationPSL particles in air (NIST traceable)
Operating Environment50°F to 104°F (10°C to 40°C) / < 95% non-condensing relative humidity
Storage Environment14°F to 122°F (-10°C to 50°C)/Up to 98% non-condensing relative humidity
Accessories IncludedCradle for charging and convenient USB and Ethernet communications, ENET CAT5E 7 foot cable, USB-A to MINI-B 6 foot cable, 12 V dc power supply, zero count inlet- filter, filter adapter, sample inlet protective cap, hard case, getting started manual and users manual CD
Manuals & Data Sheets