FOR IMMEDIATE RELEASE CONTACT

September 16, 2004 Luann Kupka

Marketing & Sales Administration Manager

860-599-6262

Davis-Standard Issued New Patent for Improved Temperature Control

(Pawcatuck, Conn.)--A newly patented technology from Davis-Standard improves upon an existing adaptive reset algorithm to provide temperature control precision of +/- 0.1 degree Fahrenheit regardless of processing conditions. The new patent, entitled “Extruder Temperature Controller with Stable Temperature Reset,” was issued in July of this year. Saul Eiva, Davis-Standard’s software development engineer who designed the new algorithm, said it is more accurate than previously patented technology.

“Prior to this development, there was a one degree Fahrenheit temperature deadband in the reset function. We have improved the algorithm ten-fold by enabling the actual temperature to more precisely coincide with the set point for each zone,” explained Eiva. “Davis-Standard is the leader in dual thermocouple temperature control and the improved temperature reset makes it even more accurate.”

The reset algorithm memorizes the thermal loading or temperature conditions of each barrel zone at different screw speeds. When the screw speed enters a specific range, the algorithm makes adjustments relative to thermal load to maintain an exact temperature. This technology is especially beneficial for processes requiring a variety of materials, large thermal loads and high operating rates.

The new temperature reset algorithm is available with the dual thermocouple technology on Davis-Standard’s EPIC III™ and MESA III supervisory control systems. For more information, contact Saul Eiva at seiva@davis-standard.com.

# # #