
Fluke 985 Particle Counter
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Product Description
Use the Fluke 985 air particle counter to test and analyze indoor air quality and determine airborne particle concentration.
Technical Specifications
- Manufacturer part number (MPN)
- 4131397
- Brand
- Fluke
- Category
- Tools
- 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, 90 mW 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
- Counts, low battery, sensor fail
- Delay time
- 0 to 24 hours
- Sample inlet
- Isokinetic probe
- Security
- Administrator password control (optional)
- Communication mode
- USB 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)
- 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; 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
- Warranty
- One-year
- Accessories included
- Cradle for charging and convenient USB and Ethernet communications, 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
Cross References
- OEM-URL https://www.fluke.com/en-us/product/building-infrastructure/indoor-air-quality-testing/fluke-985
Product Documentation
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Catalogue entry last verified: 2026-08-13. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.
Frequently asked questions
- Where can I buy 4131397?
- 4131397 can be ordered from cballast.com as a Fluke catalogue item: request a quotation on this page or email sales@cballast.com, and the order ships worldwide.
- What is the manufacturer part number for this Fluke product?
- The manufacturer part number is 4131397.
- Who manufactures 4131397?
- 4131397 is a Fluke product in the Safety & Detection range.
- Is a datasheet available for 4131397?
- Yes — the 4131397 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 4131397?
- The minimum order quantity is 1.
- Is 4131397 available?
- Yes — 4131397 is available to order: fulfilment is from supplier stock in cBallast's European network, dispatched directly from the warehouse to the customer, with the exact lead time stated in the quotation (reply within 24 hours).
- How do I get a price for 4131397?
- Request a quotation with the quote button on this page or by email to sales@cballast.com — we reply within 24 hours with price, availability and lead time.
