Oil test centrifuge

Introduction

An oil test centrifuge is a laboratory centrifuge used for the testing of petroleum products, such as crude oil, fuel oils, and lubricating oils, for the determination of the water and sediment content and for other oil testing procedures, and it is used in refineries, laboratories, and the petroleum industry. The oil test centrifuge spins samples of the oil in graduated centrifuge tubes at a controlled speed, separating the water and sediment from the oil by centrifugal force, and it is used for the determination of the water and sediment content of petroleum products, following standard methods, such as ASTM D4007 and ASTM D96; in operation, the oil sample and a solvent are placed in the graduated centrifuge tubes, the tubes are placed in the centrifuge, and the sample is spun at the specified speed for the specified time, after which the volumes of the water and sediment, which settle at the bottom of the tubes, are read from the graduations, and the oil test centrifuge is designed for the specific requirements of oil testing, with controlled speed, a heated chamber in some models for viscous samples, and graduated tubes, and it may be heated to maintain the sample temperature. Oil test centrifuges are used for testing the water and sediment content of crude oil and fuel oils, for quality control in refineries and terminals, for testing lubricating oils, for research, and for many other applications, and they are available in various capacities and configurations, with features such as variable speed, timers, and heated models. With their separation of water and sediment, oil test centrifuges are essential for petroleum product testing.

Oil Test Centrifuge LOT-T2020

Oil Test Centrifuge can reach a maximum speed of 4000 rpm with an accuracy of ± 10 rpm. It supports over 12 user-defined programs and offers more than 40 rates of acceleration and decel...

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Oil Test Centrifuge LOT-T2010

Oil Test Centrifuge is equipped with advanced a swing rotor and a capacity of 4 × 100 ml, supporting efficient sample handling. With a maximum speed of 2000 r/min and a maximum of 957 ...

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Standards

IEC 61010-2-020:2016-Particular requirements for laboratory centrifuges

Complies with the above standards, but is not limited to them.

Features

1. Oil test centrifuge for testing water and sediment content in petroleum oils.

2. Standardized centrifugal separation for crude oil, fuel and lubricant testing.

3. Suitable for petroleum refineries, fuel testing, industrial, lubricant and research labs.

4. Includes centrifuge, heated chamber (if applicable), tubes, controller and operation manual.

5. Supports water and sediment (BS&W) measurement for petroleum product quality.

FAQ

Q1: What testing scenarios is this centrifuge mainly applied to?

A: The oil test centrifuge is used in petroleum refineries, fuel testing laboratories, oil production facilities, industrial laboratories, lubricant manufacturing, pipelines and research to measure the water and sediment content (basic sediment and water, BS&W) in crude oil, fuels and lubricating oils using standardized centrifugal separation for quality control, custody transfer, specification compliance and process monitoring. It supports crude oil BS&W testing (custody transfer, production accounting, refinery intake), fuel oil water and sediment measurement (diesel, fuel oil, bunker fuel), lubricating oil contamination testing (new and used oil), pipeline batch testing, refinery process control, used oil condition monitoring, and petroleum product specification compliance. The centrifugal method provides rapid, quantitative measurement of water and sediment that can cause corrosion, equipment damage and reduced product quality, making it essential for petroleum production, transportation and refining.

Q2: What standards does the centrifuge comply with?

A: The oil test centrifuge follows relevant ISO, ASTM and GB/T standards for water and sediment testing by centrifuge, including ASTM D96 (water and sediment in crude oils by centrifuge), ASTM D1796 (water and sediment in fuel oils by centrifuge), ASTM D2709 (water and sediment in distillate fuels by centrifuge), ISO 3734 (fuel oils - water and sediment by centrifuge), and relevant GB/T standards including GB/T 6533 (water and sediment by centrifuge) and GB/T 8929 (water by distillation, related). The hardware complies with IEC 61010 safety standards and applicable centrifuge safety standards. Centrifuge tubes should be standardized (conical, graduated, ASTM D96 type). Calibration should use certified reference materials or compare with reference method (distillation). The centrifuge should be properly balanced and maintained per safety standards.

Q3: What is the warranty period for the whole centrifuge and key components?

A: The whole oil test centrifuge is covered by a 12-month warranty. The centrifuge rotor, drive motor, chamber (heated if applicable), controller and housing are covered, while centrifuge tubes, tube holders, seals and fuses are consumables or accessories. Damage from improper use, imbalance, tube breakage or unauthorized repair is excluded. Extended service contracts may be available for this petroleum testing equipment. Rotor may have separate inspection/warranty terms (rotors are safety-critical components with finite fatigue life).

Q4: Is this device difficult to operate? Is professional training required?

A: Operation requires trained petroleum laboratory personnel familiar with centrifuge operation, oil testing and standard methods. We provide operation manuals, training and application support. Proper sample preparation (heating for viscous oils, solvent addition per method), tube filling (equal volumes for balance), centrifuge operation (speed, time, temperature if heated), result reading (graduated conical tube), safety procedures (imbalance, tube breakage, hot oil) and quality control are important for accurate, safe BS&W measurement.

Q5: What is the typical lead-time for order delivery?

A: Standard models require 7-30 working days. In-stock units can ship within 3-7 working days. Custom configurations or large built-to-order systems may require additional time, and we confirm the exact schedule before order confirmation.

Q6: Is regular calibration required? What is the recommended calibration cycle?

A: Speed calibration (tachometer) recommended every 6-12 months. Temperature calibration (if heated chamber) every 6-12 months. Timer accuracy verified periodically. Rotor inspection (cracks, corrosion) per schedule - rotors have finite fatigue life and should be inspected/replaced per manufacturer. Routine maintenance (lubrication, cleaning). Full centrifuge performance verification annually with reference materials. Tube holder condition checked. Safety interlocks (lid lock, imbalance) verified.

Q7: Are supporting consumables universal?

A: Centrifuge tubes (conical, graduated, ASTM D96 type - glass or plastic), tube holders, solvents (toluene, xylene, perchloroethylene per method), cleaning supplies and fuses are available from petroleum testing suppliers, though tube type should match the standard and centrifuge. Long-term consumable cost depends on test volume and solvent usage.

Q8: Can I customize parameters or supporting accessories?

A: Customization includes number of tube positions, tube size (100 mL, 12.5 mL per ASTM), maximum speed (RCF/g-force), heated chamber (temperature control for crude oil testing), refrigeration (if needed), automation level, data output and accessories. Additional tubes, holders and accessories can be ordered separately. Custom orders extend delivery lead-time.

Q9: Does the purchase include on-site installation and commissioning service?

A: Standard delivery includes the oil test centrifuge and accessories with an operation manual. On-site installation, calibration and training are not included for standard orders but can be arranged at additional cost. Remote guidance is provided. Fume hood may be required for solvent-based methods.

Q10: What types of samples are compatible with this equipment?

A: The oil test centrifuge measures water and sediment (BS&W) in crude oil, fuel oils (diesel, heating oil, bunker fuel), lubricating oils (new and used), and other petroleum products within the sample viscosity, water/sediment content and method specification. Different product types require specific methods: crude oils follow ASTM D96 (heated, with toluene/xylene solvent); fuel oils follow ASTM D1796 or D2709; lubricating oils may follow specific methods. Very viscous crude oils require heating (typically 60-80 degrees C) and solvent addition to reduce viscosity for proper separation. Samples with very high water content (>50%) may require dilution or alternative methods. Emulsified water may not fully separate by centrifuge alone (may require demulsifier or distillation method for accurate water content). Users should follow the specific test method (ASTM D96, D1796, D2709, ISO 3734, GB/T 6533) for sample preparation, use standardized conical graduated centrifuge tubes (ASTM D96 type, 100 mL or 12.5 mL), heat viscous samples per method (crude oil typically 60-80 degrees C), add appropriate solvent per method (toluene, xylene, or perchloroethylene - some methods use solvent to reduce viscosity and aid separation), fill tubes to equal volumes (critical for centrifuge balance - imbalance can damage centrifuge and cause tube breakage), centrifuge at specified speed (RCF/g-force) and time per method (typically 1500-1800 RCF for 5-10 minutes, repeated as needed), read the water/sediment layer in the graduated conical tube (water is typically below the oil layer, sediment at the very bottom - read the interface carefully, use proper lighting), include blank correction (solvent blank), report results in % volume (water and sediment separately or combined, per method), and for custody transfer, compare with alternative methods (distillation for water, ASTM D4007 or D95) if there is discrepancy. The centrifuge should be properly balanced (equal volumes in opposite tubes - use a balance to verify, or fill to the same mark). The centrifuge should not be operated with damaged tubes (cracked glass tubes can break during centrifugation, causing oil spill and imbalance). The lid safety interlock should be functional (do not override). The rotor should be inspected regularly for cracks or corrosion (rotor failure at high speed is catastrophic - follow manufacturer rotor inspection and retirement schedule). For heated centrifuges, ensure proper temperature control and ventilation (hot oil and solvent fumes). The centrifuge should be placed on a stable, level surface. Waste (oil samples, solvent, broken tubes) should be disposed of per hazardous waste regulations. The result should be reported with the test method specified, as different methods may give slightly different results (centrifuge method may underestimate emulsified water compared to distillation). For crude oil custody transfer, the centrifuge method (ASTM D96) is commonly used for BS&W, but for accurate water content, distillation (ASTM D95/D4007) may be required. The centrifuge tubes should be read at the specified temperature (some methods require reading while warm, as wax can solidify and obscure the interface on cooling).