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Fluke 985
Six channel Particle Counter, 0.3 μm to 10 μm Range

  • Six channels and particle size range 0.3 μm to 10 μm
  • Ultra-lightweight and ergonomic design for easy single-hand operation
  • Ten hours of standard-use battery life
  • Large 3.5 inch QVGC color display with backlight, intuitive icons, and large font options
  • 10,000 records stored for easy access to historical data
  • Data can be viewed in traditional tabular or trend graph
  • 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.
  • USB/Ethernet charge cradle ensures unit always ready for use
  • Administrator password control (optional) for added security
  • Meets ISO 21501, JIS B9921, and CE standards
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Product Information
Datasheet 1.2 MB PDF
Manual 570 KB PDF
Application Note 858 kB PDF
Click here for Information Regarding PDF'sPDF Help

The Fluke 985 particle counter is an essential tool in the facility maintenance, HVAC and IAQ professional’s toolbox. From filter testing to indoor air quality investigations, the particle counter equips the user with valuable data concerning the concentration and source of particulates in the tested environment. The new Fluke 985 Particle Counter is ideal for troubleshooting and monitoring indoor air quality issues and verifying HVAC filter performance and critical locations for ISO Class 5–9 certification. With the ultra-light weight ergonomic design, easy to view color screen with intuitive icons, on-screen trend graphs for easy and quick analysis, the Fluke 985 is a must for any maintenance, HVAC and IAQ professional.

Fluke 985 Particle Counter
Six size channels 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)
Light source 775 nm to 795 nm, 90mW class 3B laser
Count modes Raw counts, #/m3, #/ft3, #/liter in Cumulative or Differential mode
Counting efficiency 50 % @ 0.3 μm; 100 % for particles > 0.45 μm (per ISO 21501)
Zero count 1 count/5 minute (JIS B9921)
Concentration limits 10 % at 4,000,000 particles per ft3 (per ISO 21501)
Data storage 10,000 records (rotating buffer)
Alarms User selected particle channels and limits
Display QVGA color with backlight
Delay time 0 to 24 hours
Sample inlet Isokinetic probe
Security Administrator password controlled (optional)
Communication mode USB or Ethernet
Dimensions (L x W x D) 27.2 cm x 9.9 cm x 5.3 cm (10.7 in x 3.9 in x 2.1 in)
Weight 0.68 kg (1.5 lb)
Power adapter 100 V ac to 240 V ac, 12 V dc, 2.5 A
Rechargeable battery Li-ion 7.4 V 2600 mAh
Battery duration/charge time 10 hours typical use (5 hours continuous sampling)/3.5 hours
Calibration PSL particles in air (NIST traceable)
Operating environment 50 °F to 104 °F (10 °C to 40 °C)/< 95 % non-condensing relative humidity
Storage environment 14 °F to 122 °F (-10 °C to 50 °C)/Up to 98 % non-condensing relative humidity
Ordering Information
Model  Description Buy Online Price
MFR ID: 4131397
Fluke 985 Particle Counter. Six channels and particle size range 0.3 um to 10 um. Buy Now $4,999.99
Included Accessories
  • 1 - Cradle for charging and USB, Ethernet communications
  • 1 - Ethernet cable
  • 1 - USB cable
  • 1 - 12 V dc power supply
  • 1 - Zero count inlet-filter
  • 1 - Filter adapter
  • 1 - Sample inlet protective cap
  • 1 - Getting started manual
  • 1 - Users manual CD
  • 1 - One year warranty
Optional Accessories
MFR ID: 4112853
Fluke G1P-GROUP4 Gold CarePlan - Extends warranty from 1 to 3 yrs & includes annual NIST calibration Buy Now $1,099.99
MFR ID: 4112882
Fluke S1P-GROUP4 Silver CarePlan - Extends warranty from one to three years Buy Now Sale $337.49
(Reg. $374.99)