8130 Nude Ionization Gauge

The ETI Nude Ionization Gauge is a high-sensitivity gauge covering the vacuum range of 1 × 10-3 to 2 × 10-11 Torr (argon). This tube features replaceable filaments, dual tungsten or single iridium, and a small-diameter cage tantalum grid on platinum-clad molybdenum support rods. A .005” diameter collector is used. This results in a low X-ray limit, sensitive tube, capable of being baked out to 450 °C for those applications requiring high-temperature processing.

Connection 2-3/4”, 1” conflat or KF 40 flange
Envelope None
Mounting Position Vertical
Collector .005” tungsten
Filament Replaceable thoria-coated iridium or dual tungsten (8130)
Grid Ta and Pt/Mo support squirrel cage
Sensitivity for N2 25/Torr
X-ray Limit 2×10-10 Torr
Operating Pressure 2×10-11 to 1×10-3 Torr
Electron-Bombardment Degas 40 W @ 500 V
Resistance-Heated Degas n/a
Bakeout Temperature 450 °C