Views: 0 Author: Site Editor Publish Time: 2025-07-15 Origin: Site
Introduction
In industrial lubrication and gear applications, water contamination can form stable emulsions that degrade film strength and promote corrosion. The Water Separability of Petroleum Oils and Synthetic Fluids Tester from Changsha Friend Experimental Analysis Instrument Co., Ltd. quantifies a fluid’s ability to shed entrained water, following standards such as ASTM D1401.
Testing Principle
A mixture of oil and a specified volume of water (e.g., 40 mL water per 40 mL oil) is emulsified by agitation at 60 °C for 20 seconds. The sample is then transferred to a graduated sedimentation cylinder maintained at 54 °C. At timed intervals (15 minutes, 30 minutes, and 60 minutes), the volume of separated water is recorded. The water‑separable volume percentage indicates the fluid’s demulsibility.
Technical Features
Agitation Module: Programmable impeller speed and duration for consistent emulsification.
Temperature‑Controlled Cylinder Block: Holds up to eight cylinders at 54 °C ± 0.5 °C.
High‑Precision Graduations: Cylinders calibrated in 1 mL increments for accurate volume reading.
Automated Timing and Alerts: Signals when to record water level and logs results automatically.
Industry Applications
Gear Oils: Verify demulsibility for marine and refinery gearboxes where water ingress is common.
Compressor Oils: Ensure rapid water separation to protect bearings and seals.
Transformer Fluids: Assess moisture handling to maintain dielectric strength.
Synthetic Esters: Compare water shedding across biodegradable fluid formulations.
Best Practices
Sample Equilibration: Preheat fluid and water separately to 60 °C before mixing to avoid supercooling effects.
Cylinder Cleaning: Rinse with solvent and bake at 105 °C to remove residual water or contaminants.
Agitation Verification: Confirm impeller speed with a tachometer to ensure reproducible emulsification energy.
Multiple Replicates: Run each sample at least in duplicate to confirm repeatability of separability data.
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