Field Instruments

Product Overview

The Fluke 985 Particle Counter is a professional airborne particle measurement solution designed for HVAC technicians, facility maintenance teams, and indoor air quality (IAQ) specialists. It is ideal for troubleshooting air quality issues, verifying HVAC filter performance, and monitoring critical environments requiring ISO Class 5–9 certification.

With its ultra-lightweight ergonomic design, large color display, and on-screen trend graph capability, the Fluke 985 enables fast, accurate particle analysis and easy data interpretation directly in the field.

Key Features

• Six particle size channels: 0.3 μm to 10 μm
• Particle size range: 0.3, 0.5, 1.0, 2.0, 5.0, 10.0 μm
• Large 3.5-inch QVGA color display with backlight
• On-screen trend graphs and tabular data view
• Stores up to 10,000 records
• Ten hours battery life (typical use)
• Configurable sample methods and alarm settings
• Data export via USB memory stick (Excel compatible)
• Ethernet enabled for browser-based data access
• USB/Ethernet charge cradle
• Administrator password control (optional)
• Meets ISO 21501, JIS B9921, and CE standards

Technical Specifications

Manufacturer Information

• Manufacturer: Fluke
• Model: 985 Airborne Particle Counter

Measurement Specifications

• 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: 775–795 nm, 90 mW Class 3B laser
• Counting Efficiency:

• 50% @ 0.3 μm

• 100% for particles > 0.45 μm
  • Zero Count: 1 count / 5 minutes
  • Concentration Limit: 10% at 4,000,000 particles per ft³
  • Count Modes:

• Raw counts

• #/m³

• #/ft³

• #/liter

• Cumulative or Differential mode

Display & Data

• Display: 3.5" QVGA color with backlight
• Data Storage: 10,000 records (rotating buffer)
• Alarms: User-selectable particle channels and limits
• Communication: USB or Ethernet
• No special software required – Excel compatible export

Power & Battery

• Rechargeable Battery: Li-ion 7.4 V, 2600 mAh
• Battery Duration:

• 10 hours typical use

• 5 hours continuous sampling
  • Charge Time: Approx. 3.5 hours
  • Power Adapter: 100–240 V AC

Environmental & Physical

• Operating Temperature: 10 °C to 40 °C
• Storage Temperature: –10 °C to 50 °C
• Humidity: <95% non-condensing
• Dimensions: 27.2 cm × 9.9 cm × 5.3 cm
• Weight: 0.68 kg
• Warranty: 1 Year

Scope of Delivery

• Fluke 985 Particle Counter
• Charging cradle (USB & Ethernet)
• USB cable
• 12 V DC power supply
• Zero count inlet filter
• Filter adapter
• Sample inlet protective cap
• Hard carrying case

Applications

• HVAC filter performance verification
• Cleanroom monitoring (ISO Class 5–9)
• Indoor air quality investigations
• Hospital and laboratory air monitoring
• Pharmaceutical and electronics facilities
• IAQ troubleshooting and documentation

Why Buy from FieldInstruments.lk? (Fluke 985)

• 100% Genuine Fluke Instruments – Original products with manufacturer warranty
• Competitive pricing with fast island-wide delivery
• Trusted supplier for professional HVAC, IAQ & industrial test instruments
• Local warranty support and technical assistance
• Reliable after-sales service and calibration guidance
• Expert consultation for cleanroom & HVAC monitoring applications

Fieldinstruments.lk
50/3, Angampitiya Rd, Ethul Kotte, Sri Lanka. 10100.
Phone: +94718555888 Email: info@fieldinstruments.lk