Centrifuge for Water Determination of Crude Oil – Maintenance And Calibration

Centrifuge for Water Determination of Crude Oil – Maintenance and Calibration

Routine Maintenance
Changsha Friend Experimental Analysis Instrument Co., Ltd recommends weekly cleaning of rotor assemblies and centrifuge chamber to remove oil residues. Inspect bearings and belts for wear, and lubricate per manufacturer’s schedule.

Calibration Procedures

• Speed Verification: Use a portable tachometer to confirm rotor rpm within ±2 % of setpoint.

• Temperature Accuracy: Cross-check chamber temperature with independent thermocouples.

• Volume Metering: Validate graduated tube accuracy using calibrated pipettes or volume standards.

Troubleshooting Separation Issues

• Incomplete Phase Separation: Increase rpm in 100 rpm increments or extend run duration by 2 minutes.

• Emulsion Carryover: Evaluate demulsifier type and dosage; adjust according to crude composition.

• Excessive Vibration: Rebalance rotor with test tubes filled to equal volume; inspect for debris.

Data Quality Assurance
Implement duplicate tests on each sample. Acceptable difference between replicates is ≤0.2 % water by volume. Record ambient and sample temperatures to contextualize results.

Safety and Waste Handling
Dispose of separated water and oil phases in accordance with local regulations. Use personal protective equipment (PPE) when handling hot, hydrocarbon-laden fluids.