Convectron® vacuum gauge controller
The Granville-Phillips® 475 Convectron® Vacuum Gauge Controller combines with the industry-standard Series 275 Convectron® gauge to provide high performance vacuum pressure measurement using a unique variation of thermal conductivity. 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 1×10-4 Torr to Atmosphere.

Key features

  • Vacuum pressure measurement from 1×10-4 Torr to Atmosphere
  • High-performance compact controller for bench-top or panel mount applications
  • I/O options include analog outputs, setpoint relays, and serial communications
  • Pre-programmed gas curves for N2, Ar, He, CO2 and O2
  • Intuitive menu control for simplified configuration and parameter setup
  • RoHS and CE compliant

The Series 475 Convectron® Controller is a third-generation RoHS compliant 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 Series 475 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. It can be used as a simple readout device for basic vacuum system control or integrated into a more sophisticated control system. The 475 provides a range of control I/O options including an analog output, set point relays and a serial communication interface. The compact packaging and innovative electronics make the 475 Convectron® Controller and Convectron® technology the ideal solution for today’s vacuum measurement systems.

  • Wide Measurement Range: Vacuum system pressure can be monitored continuously from 1×10-4 Torr (1×10-4 mbar, 1×10-2 Pa) to atmosphere.
  • High Measurement Resolution: Designed to take full advantage of Convectron® Gauge technology with 1 Torr (1 mbar, 0.1 Pa) resolution at atmosphere and 0.1 mTorr (1×10-4 mbar, 1×10-2 Pa) resolution at low pressure.
  • Vacuum Fluorescent Display: The VFD is easier to read from greater distances than other types of displays. The display is configurable to use scientific notation or two ranges (Torr and mTorr, mbar and 10-3 mbar, or kPa and Pa) to provide a continuous measurement readout from atmosphere to low pressure.
  • Process Set Point Option: Relay contacts allow control of other vacuum equipment, such as valves, pumps, heaters, alarms, and safety interlocking.
  • Multiple Gas Curves: Selectable N2 , Ar, He, CO2 and O2 gas curves are pre-programmed, eliminating the need for individual calibration when changing the process gas.
  • Push-Button Controls: Calibration and set point settings are easy to adjust using intuitive front panel controls. No special tools are required.
  • Easy-to-use Analog Signals: Provides a one volt per decade logarithmic signal (0-7V or 1-8V) or a selectable non-linear signal (0-9V) that is backwards compatible with older Convectron® gauge controllers.
  • Serial Communication Interface Option: RS-232 interface allows easy integration with computer controlled systems.
  • Built-in Convectron Gauge Simulator: Simulates a Convectron® gauge, which allows system diagnostics without the need of a vacuum system.
  • Self Diagnostics: The A/D (Convectron® gauge bridge voltage) and analog outputs are continuously monitored for erroneous readings.
  • Compact 1/8 DIN Controller: Easy to install in space restricted locations.
  • Rugged All-Metal Package: Provides a high level of immunity to RF noise

Controls 275 Convectron® Pirani Vacuum Gauges

These controllers are designewd to work with 275 Convectron® Pirani Vacuum Gauges. Granville-Phillips® Convectron® Gauges have been the world-standard convection-enhanced Pirani gauge for over 35 years and are used in thousands of vacuum processes to accurately measure pressure from atmosphere to 10-4 Torr.



KRISTIAN FLODSTRÖM Produktansvarig Tryckmätning 010-155 03 11