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2009-09-17

Wittmann Battenfeld: Temperature controllers and controlled water flow regulator

Water temperature control up to 180°C
Water has better heat transfer characteristics over oil. And oil is expensive, messy and problematic for handling and disposal. Based upon the demand of the TEMPRO plusC 160 (320F) water temperature controllers using magnetically coupled pumps and these water vs oil benefits, WITTMANN (www.wittmann-battenfeld.com) decided to expand its high temperature water line to 180°C (356F). Shorter heat-up times, more precise control, higher flow rates and a uniform temperature distribution within the cavities are the main advantages of water as the heat transfer medium versus thermal oils. And the ecological advantage continues, as water is unproblematic in ist handling and disposal.

WITTMANN’s new water temperature controller TEMPRO plusC 180 will be displayed. The high performing control system is based on the proven TEMPRO plus C series. The process tank and all pressure connections were adjusted to the higher pressure conditions of up to 13bar at 180°C. A high safety level is achieved through the default system pressure control.

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Temperature controller for high cooling capacity
Especially for the temperature control of larger molds and molding machines, temperature controller model TEMPRO direct C 120 has been released. The new centrifugal pump provides in the performance range from 0,75kW to 4kW and depending on the pressure situation a flow rate of 200 to 250 l/min and thereby guarantee the optimized temperature control of large mold and cooling requirements.

The maximum process temperature is 120°C (250F). Through the direct cooling, and thus very high cooling capacity, the main application ranges in temperatures between 10°C (50F) and 60°C (140F). Contrary to competitve directly cooled temperature controllers, model TEMPRO directC 120 of WITTMANN is manufactured of non-corrosive material.

Trouble-free flow monitoring of medium temperatures up to 90°C
The WITTMANN WFC controlled water flow regulator (Photo) offers optimized Multi-Channel Flow Monitoring, used in parallel connection between the temperature controller and the mold or other mold cell consumers. The flow rate acquisition and monitoring offers increased process safety and thereby a further increase in part quality.

Additionally to the existing water flow regulators, a touchless flow measurement has been integrated and combined with a display. The processor has now the option to adjust the desired flow rate, via the proven valves from the WITTMANN flow regulator series. After connection to the molding machine this rate can be monitored to stay within an adjustable window size. During development of the WITTMANN WFC, focus was put on the compactness of the unit as well as the possibility for mounting on the tie bars of smaller injection molding machines.

FAKUMA 2009, Friedrichshafen, 13.-17.10.2009, Hall B1, St. 1204

Wittmann Battenfeld GmbH, Kottingbrunn, Austria


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