The CentriFeeder line of feeders provides accurate, real-time flow measurement, as well as near perfect control of flow rate and total. For blending applications, control the flow rate of an individual ingredient, or combine several CentriFeeder units for near perfect recipe control. If you are controlling ingredients entering a batching process, use the CentriFeeder for controlling the total of one or more ingredients entered into the batch.
The CentriFeeder with Integrated Vibratory Control accurately measures and controls the flow of any dry, free-flowing solid that can be transported via a vibratory conveyor. Through the use of a highly customizable touch screen HMI, a PID control loop is established that regulates the vibratory conveyor feeding our patented CentriFlow Meter. The outcome is an accurate, easily maintained, consistent flow that can be used for mixing, ratio control, or even recipe based blending.
TECHNICAL
FEATURES AND BENEFITS
CASE STUDIES
DOWNLOADS
INTRODUCTION TO TECHNOLOGY
APPLICATIONS
VIB: Vibratory Control Feeder
TECHNICAL INFORMATION
Below, you can find the manuals for the CentriFeeder VIB family of solids feeders and dosers. The manuals have been divided into the Mechanical Manual for the mechanical portion and the Electronics Manual for the touchscreen interface and setup. There is also a section for troubleshooting and maintenance procedures as well. Feel free to Contact Us with any questions.
The CentriFeeder VIB offers a typical accuracy of within +/-0.25 - 0.50% across the entire flow range of the feeder, for most flowable solids.
The CentriFeeder VIB consists of two main components, a flow measurement portion and a flow controlling vibratory conveyor, that work in tandem. The flow measurement portion is a gravimetric solids flow measurement device that utilizes a centripetal force based flow measurement technology to maintain an extremely accurate flow measurement. The flow measurement signal is used to create a PID control loop for controlling flow via the vibratory conveyor, which modulated speed in order to maintain a consistent flow rate. For batching, a total set point can be entered, and the vibratory conveyor will be shut off once the set point is reached.
The CentriFeeder VIB can be used with any product that can be conveyed using a Vibratory Conveyor.
The CentriFeeder maintains its accuracy despite constant changes in product elasticity, density or shape. Even changes in flow rate have little impact on the accuracy of the feeder as its output is linearized over the entirety of the feeders working limits.
Constructed from sturdy, high grade Aluminum and/or Stainless Steel, the CentriFeeder is a very low maintenance device. Because the drop into the feeder and the velocity of the product as it moves through the feeder is controlled, surface wear and part fatigue is kept to a minimum. Even high wear materials such as sand and aggregate are controlled with little concern.
A dedicated controller for the feeder ensures a split second reaction time and start/stop capabilities for speedy reaction to changes in material availability.
A variety of customizable stands, sizes and flow enhancement devices are available.
FLOW RATE: Real Time Flow Rate Output
TOTALIZATION: Real Time, Continuous Totalization
FLOW RATE SETPOINT: Send down a flow rate set point for recipes or process changes
TOTAL SETPOINT: Send down total set point for filling applications or loadout of railcars, trucks, etc.
The CentriFeeder family of feeders are highly customizable and can be tailored to nearly any product and for nearly any application. Below are just a few of the more widely utilized options. For more information on the full range of customization available for the CentriFeeder family, contact us today.
MATERIAL OF CONSTRUCTION
FEEDER CASING AND ENCLOSURE:The feeder casing is typically available in Anodized Aluminum or Stainless Steel (304 or 316), while the exterior enclosure is typically Stainless Steel (304 or 316).
FLOW SURFACES: The flow surfaces of the CentriFlow, including the Pan, the Tangential and the Diverter will be a welded, one-piece assembly. This type of pan configuration can accommodate a variety of coatings for wear resistance, flow enhancement and many other requirements.
FLOW ENHANCEMENT
LINERS / COATINGS: A variety of coatings as well as flow surface materials can be utilized in order to improve the flow of products across the Measurement Pan and other flow surfaces. In addition, a Curved Corner Pan is available for powdery products that could collect in the corners of a standard Pan.
PULSED AIR SYSTEM: The Pulsed Air System was designed to deliver a pulsed blast of dry, instrument air to the area both above and below the Measurement Pan in a manner that will clear product and debris from the Pan's surfaces without adversely affecting flow measurement readings. Use of the Pulsed Air System is intended to both assist product flow as well as to eliminate product built up on the Pan, which, if left unchecked, could result in less accurate flow measurement.
EXPLOSION CONTROL
INTRINSIC SAFETY BARRIERS: Intrinsic Safety Barriers are used when the CentriFlow Meter will be installed within a hazardous area and the CentriFlow electronics will be located within a non-hazardous area in order to isolate the CentriFlow Meter from its electronics.
EXPLOSION PROOF SYSTEM (CLASS II DIV 2): This explosion proof system is used for installing the CentriFlow Meter and its electronics within a Class II Div 2 rated area and includes a pressurization or purging system that prevents the entrance of combustible dust into the meter or its electronics.
EXPLOSION PROOF SYSTEM (CLASS I DIV 2): This explosion system is used for installing the CentriFlow Meter and electronics within a Class I Div 2 rated area. This option prevents the entrance of flammable gas or vapor from accumulating within the meter or its electronics by performing a series of four air exchanges and then, applying a positive pressure to the system.
VIB ELECTRONICS
The CentriFeeder VIB Digital Electronics is a remote electronics package that comes standard with every VIB model Weigh Feeder. The meter is connected to the electronics via the included electronics cable. The standard electronics cable that comes with each unit measures 10 feet in length, but the length of the cable can be customized for longer cable runs. Below are some of the remote electronics package's features and benefits:
FEATURES AND BENEFITS
The CentriFeeder electronics package features a color touch screen HMI that makes calibration as easy as pushing a button.
Both the flow rate and the total are displayed simultaneously on the main screen.
The CentriFlow CFE Electronics have a universal power supply that requires incoming power of between 85 and 264 VAC.
The VIB Electronics' HMI display supports an on-screen plot/trend of the flow through the meter.
The CFE Electronics comes with settings for alarms on both the flow rate and the total.
The standard outputs for the CFE CentriFlow Electronics include a 4-20 mA signal that is equivalent to flow rate, and a Pulse Output that is equivalent to total.
If connecting to a PLC or other controller, the CentriFlow CFE Electronics will communicate using the Ethernet/IP protocol. Flow rate, total and a variety of other data is transmitted to the PLC and commands from the PLC to change calibration values among other things, can be sent down from the PLC to the meter.
Eastern Instruments has extensive capabilities to customize the programming for the CFE electronics, which includes both the interface as well as the underlying functionality. Multiple units can even be connected to communicate for applications involving mixing or blending. Contact us today!
CENTRIFEEDER APPLICATIONS
The CentriFeeder VIB is a highly customizable feeder that can be tailored to a variety of applications for nearly any flowable product. Whether used for single products or used in unison for recipe based blending or batching, the CentriFeeder is perfect for nearly any application. Below are just a few of the applications where our feeders have been utilized.
FLOW CONTROL: SINGLE
For simple and accurate measurement and control of a single product, a single CentriFeeder VIB can be equipped with a standard electronics and HMI. This simple but effective setup can be used for a variety of applications including blending, batching and more. For accurate measurement and control of multiple products, multiple CentriFeeder VIB devices can be utilized, along with standard electronics and HMI programming working independently of one another. Multiple units can also be controlled via a single, Master HMI or other controller, for simple and precise control of a recipe based blend.
BATCHING OR FILLING
Using specially designed filling software, the CentriFeeder VIB can be used to fill containers or batch materials at a specified rate, into batch blends for production.
DOCUMENTATION
Below, you will find a variety of product literature including product catalogs, single page cut sheets and various application guides that can assist in selecting the correct feeder for your project. If you have any questions, please feel free to contact us and we will be happy to help.
SOLIDS OVERVIEW CATALOG
CUT SHEETS/SPEC SHEETS
HOW IT WORKS
The CentriFeeder VIB works by integrating the conveying abilities of a vibratory conveyor with the supreme measurement power of a CentriFlow Mass Flow Meter. Product is fed into the hopper which sits above the vibratory conveyor. This product can be fed continuously or in shorter increments for batching. The product feeds down through the vibratory conveyor and finally, down through the CentriFlow Meter which is positioned directly after the vibratory conveyor. As product passes through the CentriFlow Meter, both the flow rate and total are measured. This data is used by the CentriFeeder VIB's electronics which creates a PID control loop by using the flow rate and totalization information to control the speed of the vibratory conveyor. Again, the vibratory conveyor can be used to both control the flow rate and to control based on total. If a totalization set point is entered into the electronics, the vibratory conveyor will be told to shut off after the set point has been reached. The result is extremely accurate control of flow rate (for continuous operations) and total (for batching operations) for any product that can be conveyed via a vibratory conveyor.
FLOW RATE CONTROL: CONTINUOUS PROCESSES
The CentriFeeder VIB gravimetric feeder is often used to control the flow rate of continuous processes, such as in blending applications. The integral vibratory conveyor within the CentriFeeder VIB will modulate at higher or lower speeds in order to maintain the flow rate indicated by your flow rate set point. For more information, Contact Eastern Instruments today.
TOTAL CONTROL: BATCHING AND/OR FILLING
For batching, filling or other non-continuous blending applications, the CentriFeeder VIB can be used to control based on the total amount of product passing through the weigh feeder. After entering a set point for the fill/batch total, the CentriFeeder VIB will stop the flow of material by stopping the vibration of the vibratory conveyor and product flow will cease.
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