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August, 2017


www.us-tech.com


Page 59


Progressive Cavity Pumps Enable Precision and Repeatability Continued from page 52


feeding systems, as well as dispense tips and syringes. Some manufacturers might offer


a more complete line, some might repurchase or rebrand needed sup- plies. For some operators, purchasing from different sources to try to secure


formance responsibility. It should be noted that perhaps


the biggest downside of progressive cavity pumps is that they are a more costly investment than many other types of pumps. Prices for similarly performing progressive cavity pumps can vary considerably in the marketplace.


Worth the Investment? Certainly, every dispensing


operation “wants” greater accuracy, and the progressive cavity pump is one of the only options to get the process to a ±1 percent accuracy level. The truth is, for some applica- tions, repeatable accuracy, while “nice to have,” might not translate


directly into profitability and com- petitive advantage. Others might potentially benefit, but, due to inter- nal politics, lack of funds, lack of knowledge or other factors, might not be able to break away from the way things have been done in the past. Many of the earliest adopters


benefitting from the technology, demonstrating higher profits and greater competitive advantage, include those operations involved with under-filling PCB assembly components, automotive parts lubri- cation, potting and encapsulation applications, optical bonding, confor- mal coating and similar high value electronic, medical, automotive, aero- space and other industrial applica-


tions. For these types of applications, the additional upfront investment is quickly returned. The bottom line, of course, is


that it is up to each operation to crunch the numbers for themselves, as only they can accurately predict what, if anything, increased dispens- ing accuracy and consistency, superi- or product quality, greater through- out and reduced waste of material and product could mean to the prof- itability of their operation. Contact: Techcon Systems,


10800 Valley View Street, Cypress, CA 90630 % 714-230-2355 fax: 714-828-2001 E-mail: cla@techconsystems.com Web: www.techcon.com r


Progressive cavity pump valve.


the lowest individual off-brand prices might seem like the correct strategy. Others might prefer the benefits of single brand compatibility and a sin- gle source of product and system per-


Ultrasonic Piezo Transducers for Smart Sensors


Continued from previous page


tural health monitoring — involves generating vibrations and measuring their propagation through solid structures. A changed vibrational pattern shows failures in the struc- ture even before fissures arise, for example in machine parts, bridges, and aircraft wings. The transducer contains a


piezoceramic film with an electrically conductive layer applied to each side. This construction is then embedded in a flexible polymer strip. The advantages of this design are multi- ple. The piezoceramic is electrically insulated, mechanically preloaded, and, out of the basically brittle ceramic, a unit is created that is so robust that it can be affixed to sur- faces with bending radii as low as 20 mm (0.8 in.)


Versatility Piezoceramic transducers, used


in ultrasonic sensor and power appli- cations, have become increasingly important for implementing critical mechanical operations, such as in medical engineering, welding, and flow and level measurement. They have proven their versatility in a broad spectrum of applications. As piezo research expands the shapes, dimensions, capabilities and product offerings of piezo components, it will continue to expand the opportunities for piezo ultrasonic use in diverse industries. Contact: PI (Physik


Instrumente) L.P., 16 Albert Street, Auburn, MA 01501 % 508-832-3456 fax: 508-832-0506 E-mail: info@pi-usa.us Web: www.pi-usa.us r


Rely on the most trusted technology in selective soldering – choose Ersa VERSAFLOW 4/55 plus VERSAFLEX and receive the highest grade of flexibil- ity in production! As pioneers in industrial soldering Ersa is setting the benchmark as technology leader time and again. Get the best in selective soldering at any level – from SMARTFLOW up to VERSAFLOW and VERSAFLEX. If excellence is your goal, Ersa has your solution!


Highlights Ersa VERSAFLOW 4/55 Highlights VERSAFLEX


 Processable area 20” x 20”  Use of up to 4 flux spray heads


 Product change without loss in production time with the multiwave process


 High end selective soldering system for in-line manufacturing concepts


 Simultaneous Processing of multiple-up boards in x- or y- direction


 Highest Flexibility at lowest cycle time


 Automatic cycle time optimization through CAD 4 offline programming software


Full Flexibility with Ersa VERSAFLEX!


Ersa North America, Inc. 1779 Pilgrim Road Plymouth WI 53073 | USA Phone: +1 920 893 1779 Fax: +1 920 893 1562 selective.info@kurtzersa.com


Kurtz Ersa, S.A. de C.V. | Mexico Ersa Asia Pacific | China Ersa Hong Kong | China Ersa Shanghai | China Kurtz Ersa | France Ersa GmbH | Headquarters | Germany


See at NEPCON South China, Booth 1J35


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