Oil Filtration and Particle Removal in Sensitive Optics Cooling Air

Protecting Measurements, Hardware, and Emissions Integrity with a Multi‑Stage, Maintainable Filtration System

Project Snapshot

Industry: Aerospace / Combustion Testing & Optical Diagnostics

Challenge: Contaminated cooling air was carrying oil and particles onto sensitive optics and into the combustor, risking hardware damage and biased emissions data.

Result: A dual‑branch, multi‑stage filtration system with health monitoring enabled ultra‑clean air delivery, long filter life, and on‑the‑fly maintenance without interrupting testing.

1. Opening Hook – The Challenge

During an assessment of a client’s combustion test cell, we observed that the compressed air line used to cool optical instruments was visibly dripping oil. This air also communicated with the exhaust‑sampling environment, creating multiple, serious risks:

• Oil and particles contaminating high‑value optics, degrading data quality and potentially damaging lenses or housings.
• Oil carryover into the flame, artificially increasing NOx and other emissions, compromising test validity.
• Local burning of oil deposits near the optical tips, risking hardware distress.

We immediately highlighted the issue and proposed a filtration solution tailored to the facility’s duty cycle and operational constraints.