Introduction
VAF Instruments specializes in designing and manufacturing in-line oil blending systems that produce specific oil grades with high speed and accuracy. These systems are used in various settings such as on-shore bunkering installations, bunker barges, refineries, and lubricating oil plants. The primary goal is to blend two different oil products by controlling the flow ratio and creating a homogeneous mix through a static mixer, resulting in a product with a lower viscosity grade.

System Construction and Operation
The system measures both oil flows using flowmeters with pulse transmitters. The high-viscosity product flow is regulated by a frequency-controlled pump, while the MDO flow is controlled via a 4-20 mA signal. The blend ratio is adjusted using proportional integral control, and the viscosity of the blended product is measured with a ViscoSense sensor. This ensures consistent quality, even if the HFO quality varies, by continuously adjusting the MDO ratio.

Features and Benefits
The system offers instantaneous in-line blending, cost and time savings, and eliminates unnecessary storage of blended oil. It is designed to meet customer requirements, providing a flexible solution. The system is ISO 9001 certified, ensuring product quality, and features computerized control for precise blending, remote monitoring, automatic control, and alarm functions. The user-friendly software requires no special operator training.

Applications
The system is suitable for blending fuel oils, lubricating oils, additives, and chemical liquids. It can also be used for straight run delivery of MDO or HFO and batch applications.

Components
The system includes various components such as block valves, pressure relief valves, filters, transmitters, flowmeters, control valves, static mixers, and a ViscoSense sensor. An example assembly drawing and parts list are provided for reference.

Additional Information
For further details, refer to relevant product bulletins or visit the VAF Instruments website. The company is represented in over 50 countries, and specifications are subject to change without notice. For a dedicated system quotation, a Blender Questionnaire is available.