2 Aralık 2009 Çarşamba

Dynisco History

Established in 1953, Dynisco was one of the first companies to apply strain gauge technology to pressure transducers for a variety of markets and industries and the first company to design a transducer specifically to measure melt pressure during the extrusion process. In addition, over the years, Dynisco has grown through acquisition to include products such as melt indexers, rheometers, polymer evalutaion equipment and other auxiliary equipment for polymer processing and plastics extrusion.

Dedication to our ISO 9001:2000 certification assures that all Dynisco products are designed and manufactured to the highest quality standards. And our products are backed by a comprehensive service and repair program and unmatched technical support. Our experience, expertise, and service all are directed toward improving product quality and manufacturing efficiency for our customers.

Dynisco has a network of Manufacturing Sites and Sales Offices around the Globe, many of whom have over twenty years of experience with our products. Also, sales representatives and distributors worldwide supplement these direct offices throughout Europe and the Pacific Rim.
Today, Dynisco is the international leader in pressure and temperature measurement and control products for the plastics industry. We've solved some of the most challenging measurement problems in extrusion, molding, process control and general industrial applications. Our sensors meet the rigid standards of approval agencies such as CE, FM, SIRA, PTB, CSA and others. We've built our reputation by providing high accuracy pressure measurement at high temperatures, with transducers that withstand the most abrasive and corrosive production environments. Continued investment in R&D allows Dynisco to offer hundreds of models of transducers and transmitters and the latest sensing technologies.

Our extensive line of polymer testing equipment grew from Kayeness, Inc., which Dynisco acquired in 1987. Today we supply both on-line and laboratory capillary rheometers, laboratory melt indexers, on-line slit rheometers, on-line infrared analysis, a variety of impact testers, coefficient of friction testers, contact angle testers, film tensile testers and other small test devices. Through our innovative work with electronics and mechanical design, we’ve carved a niche in the polymer test marketplace by providing the highest performance per cost ratio in the business. Dynisco meets the physical testing needs of the plastics, food, and rubber industries by providing high quality equipment and services at low cost.

In 1990 Dynisco acquired Normag Gear Pumps and followed that by adding Extek Screen Changers in 1994. Extrusion processors worldwide came to rely on Dynisco gear pumps and screen changers to meet their most demanding specifications for sheet, cast film, profile, tubing, pipe, wire and cable or compounding applications. The Beringer product line was acquired by Madison Capital Group in 1998. It was combined with the Extrusion group. The Beringer product line included screen changers, cleaning ovens, and pelletizers. In 2006 the Extrusion group was divested to Xaloy in 2006, now known as Xaloy Extrusion.

On December 15th, 2006 Roper Industries, Inc. of Duluth, GA (NYSE: ROP) acquired Dynisco LLC from Audax Group of Boston, MA. Dynisco has been added to the Roper’s Energy Systems & Controls segment.

Roper Industries is a diversified industrial company that produces engineered products for global niche markets. We are well positioned in attractive end markets, and our strong operating capabilities enable us to convert this potential into profitable growth and cash flow. We are focused on executing our growth strategy to create value for our investors.

Dynisco,LLC has been built on the principles of innovative products, quality workmanship and outstanding service. Customers around the world have come to depend on Dynisco.

10 Mart 2009 Salı


While membrane-based separations of liquids from solids have enjoyed increasing popularity over the last 20 years, the technology has an inherent Achilles heel that affects all membrane devices: fouling. This long-term loss in throughput capacity is due primarily to the formation of a boundary layer that builds up naturally on the membranes surface during the filtration process. In addition to cutting down on the flux performance of the membrane, this boundary or gel layer acts as a secondary membrane reducing the native design selectivity of the membrane in use. This inability to handle the buildup of solids has also limited the use of membranes to low-solids feed streams.

To help minimize this boundary layer buildup, membrane designers have used a method known as tangential-flow or cross-flow filtration that relies on high velocity fluid flow pumped across the membranes surface as a means of reducing the boundary layer effect. (See Figure 1)

In cross-flow designs, it is not economic to create high shear forces, thus limiting the use of cross-flow to low-viscosity (watery) fluids. In addition, increased cross-flow velocities result in a significant pressure drop from the inlet (high pressure) to the outlet (lower pressure) end of the device, which leads to premature fouling of the membrane that creeps up the device until permeate rates drop to unacceptably low levels.

Instead of producing high cross flow, an alternative method for producing intense shear waves on the face of a membrane is developed. The technique is called Vibratory Shear Enhanced Processing (VSEP). In a VSEP System, the feed slurry remains nearly stationary, moving in a leisurely, meandering flow between parallel membrane leaf elements. Shear cleaning action is created by vigorously vibrating the leaf elements in a direction tangent to the faces of the membranes.

The shear waves produced by the membrane's vibration cause solids and foulants to be lifted off the membrane surface and remixed with the bulk material flowing through the membrane stack. This high shear processing exposes the membrane pores for maximum throughput that is typically between 3 and 10 times the throughput of conventional cross-flow systems. (See Figure 2, above)

The oscillation produces a shear at the membrane surface of about 150,000 inverse seconds (equivalent to over 200 G's of force), which is approximately 10 times the shear rate of the best conventional cross-flow systems. More importantly, the shear in a VSEP System is focused at the membrane surface where it is cost effective and most useful in preventing fouling, while the bulk fluid between the membrane disks moves very little.

Because VSEP does not depend on feed flow induced shearing forces, the feed slurry can become extremely viscous and still be successfully dewatered. The concentrate is essentially extruded between the vibrating disc elements and exits the machine once it reaches the desired concentration level. Thus, VSEP Systems can be run in a single pass through the system, eliminating the need for costly working tanks, ancillary equipment and associated valving.

The disc pack hold up volume of a system with 1,400 ft2 (130 sq. meters) of membrane area, is less than 50 gallons (189 liters). As a result, product recovery in batch processes can be extremely high.

Emulsified oil are serving as lubricant as well as coolant in various metal industries such as steel making and metal cutting. Disposal of emulsified fluid is a very tough environmental pollution issue. It has high COD and oil/water fully emulsified. Conventional bio-chemical treatment consumes large amount of chemicals and high running cost yet still requires multiple post-treatment steps. The disposal of solid cake will ultimately contaminate underground water. Conventional membrane treatment faces low flux and severe fouling issues. VSEP can simplify treatment process. It has high anti-fouling ability and high recovery ratio. Concentrate can be put as fuel and permeate can achieve discharge standard.

At startup, the VSEP system is fed with a slurry and the concentrate valve is closed. Permeate is produced and suspended solids in the feed are collected inside the VSEP filter pack. After a programmed time interval, valve on concentrate line is opened to release the accumulated concentrated solids. The valve is then closed to allow the concentration of additional feed material. This cycle repeats indefinitely.

Membrane selection is the single most important parameter that affects the quality of the separation. Other important parameters that affect system performance are pressure, temperature, vibration amplitude, and residence time. All of these elements are optimized during testing and entered into the programmable logic controller (PLC) which controls the system.

The operating pressure is created by the feed pump. VSEP machines can routinely operate at pressures as high as 500 psig (35 bar). While higher pressures often produce increased permeate flow rates, they also use more energy. Therefore, an operating pressure is used that optimizes the balance between flow rates and energy consumption.

The vibration amplitude and corresponding shear rate can also be varied which directly affects filtration rates. Shearing is produced by the torsion oscillation of the filter stack. Typically the stack oscillates with an amplitude of 3/4 to 1 1/4 inches (1.9 to 3.2 cm) peak to peak displacement at the rim of the stack. The oscillation frequency is approximately 53 Hz and produces a shear intensity of about 150,000 inverse seconds.

Feed residence time is set by the frequency of the opening and closing of the exit valve (valve one). The solids level in the feed increases as the feed material remains in the machine. Occasionally, a cleaner is added to the membrane stack and continued oscillation helps clean the membrane in minutes. This process can be automated and only consumes approximately 50 gallons (189 liters) of cleaning solution thus reducing cleaner disposal problems inherent with other membrane systems.

Control system

VSEP systems are supplied with internationally branded Programmable Logic Controllers. All components are fully contained in a NEMA 4 rated enclosure.

Various levels of control sophistication are available depending on the complexity of the application. For polishing or low solids applications simple controls having minimal outputs and inputs are provided. For high solids applications controls with more features are used to insure trouble free operation. The VSEP controller typically sets solids levels by actuating the exit valve based on operating parameters such as pressure or flow rate.

Other control options available include automatic clean-in-place, automatic flush, automatic shut down, full alarm features with digital diagnostic displays, remote diagnostics and monitoring, and many others. Dunwell engineers have spent years perfecting VSEP controls to maximize reliability and to minimize operator intervention.


Clean-In-Place, CIP, is a package of pre-connected pipes, valves, tanks, pumps serving to clean the filter pack in steps by washing and flushing. Different cleaner can be applied according to different fouling chemistry. Piping has different material and different grade of polishing according to applications. One CIP can serve up to 6 i-series VSEP. Customer can choose either fully manual or fully automatic or somewhere in between according to individual application.

7 Mart 2009 Cumartesi


Zealous Customer SupportEdgeos believes in earning your trust and maintaining our business relationship by constantly providing you with superior value, quality, and service. We are relentless about always meeting your needs and exceeding your expectations. If you are ever less than 100% satisfied with our relationship, or Edgeos' platform-enabled services, please let us know immediately. We want the opportunity to try and make things right.

About Edgeos, IncorporatedEdgeos, Incorporated is a network and information security technology company focused solely on enabling technology and network services organizations to provide security services to their customers through the Edgeos private labeled security services platform.

The company was founded in 2001 and is headquartered in Chandler, Arizona (Phoenix Metropolitan Area). Edgeos has customers across six continents and our customers have used the Edgeos security services platform to quickly and accurately identify millions of vulnerabilities on many thousands of networks spanning the globe.

For more information about Edgeos, or to discuss how we can work together, please contact our sales team via email at sales (@) edgeos (.) com or via telephone at 866.334.3671.

6 Mart 2009 Cuma

DDR-150 Rotary Positioning Stage

Direct drive brushless DC servo motor

* Precision ground ABEC-7 4-point contact bearings
* Durable stainless steel top plate with through hole
* Resolution to 0.2 arc seconds
* Highly repeatable Hall effect home and limit switches
* Optional encoder scale cover
* Ideal for:
o Wafer Inspection
o Precision Assembly
o Laser Machining


Aeroflex Microelectronic Solutions is a world leader in the design
and manufacturing of high-reliability integrated circuits and packaging, motion
control and motors, microwave and RF devices, components and subsystems for the
aerospace, medical, industrial, fixed broadband, wireless/mobile, and test and
measure markets. Our customer-focused approach brings flexibility, creativity
and cost-effectiveness to the diverse markets we serve.

Aeroflex Test Solutions is a global leader in the Test and Measurement
Instrumentation marketplace. Our products support a wide range of industries
including aerospace, defense and wireless mobile and broadband communications.
Our proven solutions encompass a full spectrum of instrumentation from turnkey
systems, stand alone boxes or modular components that provide customers with
highly reliable, customized, innovative and cost effective testing

Product areas include ATE, Avionics, Broadband Test, Communications Test, General Purpose Test, PXI, Signal Sources, Stimulus Products, Synthetic and Wireless.
Gönderen bebu zaman: 14:01 0 yorum
Etiketler: AEROFLEX, Avionics, Broadband Test, Communications Test, General Purpose Test, Product areas include ATE, PXI, Signal Sources, Stimulus Products, Synthetic and Wireless, technology, TEKNOLOJİ
DDR-150 Rotary Positioning Stage

Direct drive brushless DC servo motor

* Precision ground ABEC-7 4-point contact bearings
* Durable stainless steel top plate with through hole
* Resolution to 0.2 arc seconds
* Highly repeatable Hall effect home and limit switches
* Optional encoder scale cover
* Ideal for:
o Wafer Inspection
o Precision Assembly
o Laser Machining