Physical Data

• Connection: 2-3/4", 1" Conflat orKF 40 flange
• Envelope: None
• Mounting Position: Vertical
• Collector: .005" Tungsten
• Filament: Replaceable Thoria-coatedIridium or Dual Tungsten (8130)
• Grid: Tantalum and Pr/Moly supportsquirrel cage

Operating Data

• Sensitivity for N2: 25/Torr
• X-ray Limit: 2 x 10^-11?Torr
• Operating Pressure: 2 x10^-11?to 1 x 10^-3?Torr
• Electron Bombardment Degas: 40Watts @ 500 volts
• Resistance Heated Degas: n/a
• Bake-out Temperature: 450°C

The ETI Nude Ionization Gauge is ahigh-sensitivity gauge coveringthe vacuum range of 1 x 10^-3?to 2 x 10^-11?Torr (Argon). This tube featuresreplaceablefilaments, dual Tungsten or single iridium, and a smalldiameter-cage tantalum grid on platinum-clad, molybdenum supportrods. A .005" - diameter collector is used. This results in a lowX-ray limit,sensitive tube, capable of being baked out to 450°Cfor those applications requiring high-temperature processing.