JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 46

FEATURE g…/… The perfect mixture “Wind energy” More information Equipment instead. All pumps are protected against abrasive wear through a specialised sealing technique. Rapid control circuits Today, an output rate of 20 litres per minute is not unusual for a resin infusion system, and is indeed concurrent with market expectations. However, what makes the Hilger u. Kern / Dopag Group infusion system particularly interesting is its use of the MR20 metering computer, also developed by Hilger u. Kern. The real innovation of this computer is the new software that has been especially developed for the metering and mixing systems used in this type of application. The computer has served the market for some time, designed as it was to specifically control mixing and proportioning systems, for which it offers the user a multiplicity of functions and programs that can be easily chosen, thanks to simple operator guidance and a touch-screen panel. The software can be easily adapted to many different requirements, and offers comprehensive functions from monitoring through the control unit to production data capture. All the Engineering company Hilger u. Kern / Dopag Group has developed the control unit software for use specifically with advanced metering and mixing systems. The systems themselves are sufficiently flexible to be used successfully in many different industries over long periods of time. Its many years of experience in the field of metering technology with both single and plural component materials, combined with the ability to offer worldwide service, make the company a leading supplier of metering and mixing systems. interfaces necessary to allow for integration into fully automated production processes or a master computer exist as a standard function. Due to its rapid control circuit, the MR20 offers precisely the right control of the production process required for accurate repeatability of the mixing ratio. Only if this can be guaranteed can the prescribed mechanical limit values of the rotor blades be achieved. When the blade is in use, normal air flow, which approaches the blade from the front and induces it to turn, does not pose a problem regarding the prescribed mechanical limits. It is only when the blades are subjected to gusting during stormy weather that the upper limits can be reached and problems may occur. This is why it is vitally important that the production process conform to the exact specifications, not only in compliance with the correct mixing ratios, but also in the flexibility of adjustment. For instance, during the infusion process, the material is often not deposited at a constant flow rate. When this occurs, rapid readjustment by the MR20 computer is paramount, in order to conform to actual flow rates. Additionally, processes and guidelines often change, and users expect a system that can be easily and quickly readjusted to suit the new parameters. More information: www.dopag.com Contact: dosiertechnik@hilger-kern.de JEC Composites Magazine / No40 May 2008

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JEC COMPOSITES MAGAZINE - Issue #40 - May 2008

Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #40 - May 2008