Fluke 985 Particle Counter

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  • Fluke 985 Particle Counter
  • Fluke 985 Particle Counter

Key features

Assess air quality more easily and accurately.

  • 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

Special offers

Product overview: Fluke 985 Particle Counter

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 USB cable, memory stick it’s easy to review and analyze the data anywhere and anytime.

Specifications: Fluke 985 Particle Counter

Measured 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

Models: Fluke 985 Particle Counter

Fluke 985
Fluke 985 Particle Counter
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  • Cradle for charging and convenient USB and Ethernet Communications
  • USA-A to MINI-B 6-foot cable
  • 12 V DC power supply
  • Zero count inlet-filter
  • Filter adapter
  • Sample inlet protective cap 
  • Hard Case

Is there a setting that will allow the 985 distinguish between which particles it is detecting? Possibly if it picks up CO2. I originally wanted a Fluke 975 but they are discontinued, so we bought this one. Thanks

Asked by: BryGuy
The Fluke 985 Particle Counter does not define the size, or other parameters, of particles only count.
Answered by: FlukeCorp
Date published: 2023-06-09

Can readings be streamed live over the USB/Ethernet connection? Or can data only be exported via USB/Ethernet after recording?

Asked by: Nathaniel
Data from the 985 cannot be streamed live via USB or ethernet, but you can view data trends live on the 985 display in the Trend Data mode. And once a recording or session is complete, you can then move the data to a PC either with the USB cable, USB flash drive or ethernet cable. With the latest firmware revision you can select the data to be exported as a xls or tsv format.
Answered by: FlukeCorp
Date published: 2023-02-22

In our facility, we do not operate the Fluke regularly (maybe once a month). After how many uses is it suggested to calibrate the 985?

Asked by: Spencer
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