The 475001-A0-T Granville-Phillips® 475 Convectron® Vacuum Gauge Controller combines with the industry-standard Series 275 Convectron® gauge to provide high performance vacuum pressure measurement in Torr units using a unique variation of thermal conductivity. A RS232 communication interface is included. The Convectron® gauge is a convection-enhanced Pirani design vacuum gauge that features individually calibrated gauges, temperature compensation and convection technology for increased accuracy and repeatable vacuum measurements over seven decades from 1x10^-4 Torr (1x10^-4 mbar; 1 x10^-2 Pa) to Atmosphere. The 475 Convectron® Vacuum Gauge Controller is a third-generation Convectron® gauge controller that combines rugged reliability with key features for ease of use and system integration. It includes several features such as self-diagnostics, integrated Convectron® gauge simulation, and built-in gas curves to adjust for various vacuum environments. The 475 Convectron® Vacuum Gauge Controller is easy to use with a highly visible Vacuum Florescent Display (VFD) and intuitive front panel controls that allow gauge calibration and adjustment of vacuum measurement parameters without the need for special tools. The 475 Convectron® Vacuum Gauge Controller can be used as a simple readout device for basic vacuum system control or integrated into a more sophisticated control system. The compact packaging and innovative electronics make the 475 Convectron® Vacuum Gauge Controller and MKS, Granville-Phillips Division Convectron® technology the ideal solution for today's vacuum measurement systems.