AIR QUALITY MONITOR 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. Features: 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 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