Bayard-Alpert Pirani Gauge

Conserve Space and Reduce CostWith BPG400 Technology0 ... 10 VDCTwo Gauges in OneCombining Bayard-Alpert and Piranitechnologies in one gauge, the INFICONBPG400 spans 13 decades.Ease of UseThe BPG400 is easy to install, easy to use,easy to adjust. It requires no external interlocksystem.High vacuum adjustment of the Pirani isperformed automatically, and full scaleadjustment requires only the push of a button.PiraniPirany technology uses theprinciple of thermal conductivity.The improved temperaturecompensation by the incorporatedtwin Pirani provides fast, stablevacuum measurement from10 -3 mbar up to atmosphere.Increased ProductivityFast and smooth transition fromPirani to Bayard-Alpert systemsaves time and increases systemproductivity by up to 10 percent.10 +310 +210 +110 +010 –110 –210 –310 –410 –5PiraniSignalDisplayProfibus DPDeviceNetInterfaceElectronicsBayardAlpertSignalFlexibilityThe very small footprint and compact designof the BPG400 offers more flexibility forsystem builders, allows system designs to besimplified, and provides a major reduction intotal system costs.Footprint BPG400mm (inches)Reduced ComplexityCost-effectiveness, convenience and flexibilityare built into the BPG400:You need only- one vacuum connection- one sensor cable- one A/D converterSystem requirements and equipment costsinvolved are significantly reduced.Long Filament Life67 (2.64)58 (2.29)The Pirani is used for controlling the Bayard-Alpert system and thus preventing burnoutof the yttrium oxide coated iridium filament,which has proven to withstand at least 10,000air inrushes. This means a dramatic increasein system uptime.PressureAtmosphereBayard-AlpertBayard-Alpert technology is basedon gas ionization. It measuresfrom 5x10 -10 to 10 -2 mbar with highaccuracy and repeatability.Its implemented degas functioncleans the measurement systemwhenever necessary.10 –610 –710 –810 –9Hot Ion offHot Ion onAir In rushNumber of air In rushes >10,00010 –10