Fluke 985 Particle Counter Repair

Description

Fluke 985 Particle Counter Repair

The Fluke 985 is a handheld airborne particle counter — it draws an air sample and counts/sizes particles across multiple channels (laser optical sensing) for indoor-air-quality, cleanroom, and HVAC commissioning work. Its accuracy depends on the laser optical sensor, the sample-flow (pump) system, and the counting electronics, which is where service and calibration focus.

FlukeMeterRepair.com repairs and calibrates the Fluke 985 for HVAC technicians, building-commissioning agents, and IAQ specialists.

Common Fluke 985 problems we fix

• Optical-sensor / laser faults — a degraded laser or detector miscounting particles, repaired and recalibrated against standards.
• Sample-flow / pump faults — the pump not drawing the correct flow, repaired (flow recalibrated).
• Counting / sizing accuracy faults — channels miscounting, recalibrated.
• Display, touchscreen, or battery faults — repaired.
• Won’t power on — power faults.

FAQs

My 985 particle counts are off — fixable? Yes. Optical and flow faults are repairable, then the counter is recalibrated so counts and flow are accurate, with a NIST-traceable certificate.

Is the flow verified? Yes — flow and counting are checked against our standards.

Every repair includes NIST-traceable calibration and a 90-day parts-and-labor warranty. Email us or request service.