Gauge Type

ETI Series4336 and any Bayard-Alpert Gauges

Mounting Position

Vertical 

Envelope

Nonex 7720 Glass 

Tabulation

3/4", 1" Pyrex or Nonex Glass,

3/4", 1" Kovar.

flanges are available 

Collector 

0.005"Tungsten 

Filament

Thoria-Coated Iridium (single) or Tungsten (dual) 

Grid

Tungsten Helix Configuration

Operating Pressure

1.0 x 10(-10) to 1.0 x10(-3) Torr 

Bake-out Temperature

250°C 

Collector Potential

0 Volts

Shield Potential

N/A

Grid Potential

+150~ + 180 VDC 

Filament Current

4 ~ 6 Amps 

Filament Voltage

3 ~ 5 VDC 

Filament Potential

+30 VDC