Views: 0 Author: Site Editor Publish Time: 2025-07-08 Origin: Site
Introduction
Hydraulic systems demand exceptional fluid cleanliness to avoid component wear and system downtime. The Auto Hydraulic Fluid Cleanliness Tester from Changsha Friend Experimental Analysis Instrument Co., Ltd. streamlines ISO 4406 particle counting and entrained air measurement with full automation for sample handling and reporting.
Testing Principles
Optical Particle Counting: A laser‑based flow cell counts particles in size ranges (≥ 4 µm, ≥ 6 µm, ≥ 14 µm, ≥ 21 µm), converting counts to ISO codes.
Entrained Air Analysis: Ultrasonic sensors detect dissolved and entrained air volume percent.
Technical Design Features
Robotic Sampling Arm: Transfers up to 16 samples from carousel to the flow‑cell inlet under airtight conditions.
Pre‑Filtering Module: Diverts large debris through a user‑replaceable mesh filter to protect optics.
Integrated Vacuum Degasser: Extracts dissolved air for baseline measurement.
Automated Data Processing: Software assigns ISO codes, generates trend charts, and flags out‑of‑spec results.
Industry Applications
Construction Equipment OEMs: Validate fluid cleanliness before assembly.
Industrial Maintenance: Monitor on‑site fluid cleanliness during scheduled services.
Aerospace Ground Support: Ensure hydraulic fluid integrity for flight‑control test rigs.
Marine Hydraulic Systems: Detect water ingress and particulate contamination in shipboard systems.
Best Practices
Sampling Protocol: Draw fluid under system pressure to avoid surface‑level inaccuracies.
Filter Maintenance: Replace pre‑filter meshes when differential pressure exceeds thresholds.
Optics Calibration: Run certified microsphere standards weekly to verify sizing accuracy.
Data Logging: Integrate with maintenance CMMS to correlate cleanliness trends with maintenance events.
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