EBARA Technologies, Inc. Pirani/Ionization gauges combine the wide measurement range of a Pirani gauge with the high vacuum measurement range of a hot cathode ionization gauge. These gauges are usable from Atmospheric pressure all the way to ultra-high vacuum (5 e-10 Torr). The gauges can be controlled via rack mount power supply/display units or can be powered by the user while utilizing the gauge output or the optional gauge mounted display. EBARA Technologies, Inc. Piran/Ionization gauges are available with either KF or CF flanges.