Navigate through the pages by clicking on the "Turn the Page" button, bottom of the page.

2400 Philmont Ave. PO Box 662 Huntingdon Valley, PA 19006 U.S.A. Phone: (215) 938-4400 Fax: (215) 947-7464 Email: techin@etigauges.com

Ionization Gauge Type 4336 and 8135 The ETI 4336 Series of Ionization Gauges are Bayard-Alpert gauges available either with a burn-out-resistant, iridium-coated filament, or two tungsten filaments. ETI was the first to incorporate a bi-filar design grid in its Bayard-Alpert gauges. Through this design, only one-half of the grid weight is suspended on each support, thereby making it more "sag resistant" during frequent outgassing conditions. 4336 Physical Data Tubulation 3/4", 1" Pyrex or Nonex Glass or 3/4", 1" Kovar, flanges are available Envelope Nonex 7720 Glass Mounting Position Vertical* Collector .005" Tungsten Filament Thoria-Coated Iridium or Tungsten High Stability Geometry Available* Grid Tungsten helix configuration *See Special Gauges Operating Data Sensitivity for N2 10/Torr X-ray limit 2 x 10-10 Torr Operating Pressure 2 x 10-10 to 1 x 10-3 Torr Electron Bombardment De-gas 70 Watts Resistance Heated De-gas 6.3 to 7.5 volts @ 10 amps Bake-out Temperature 250° C Recommended Electrical Operating Parameters Collector Potential 0 volts Shield Potential n/a Grid Potential 150 to 180 volts Filament Current 4 to 6 amps Filament Voltage 3 to 5 volts Filament Potential to Ground 30 volts Type 4336 4336 Single Iridium Pin Configuration Pin #1 Grid (G) Pin #2 Filament (F) Pin #3 Filament (F) Pin #4 Grid (G) Type 4336 T 4336T Dual Tungsten Pin Configuration Pin #1 Grid (G) Pin #2 Filament #1 (F1) Pin #3 Filament #1 (F1) Pin #4 Filament #2 (F2) Pin #5 Filament #2 (F2) Pin #6 Grid (G) Type 8135 8135 Dual Tungsten Pin Configuration Pin #1 Filament #1 (F1) Pin #2 Grid (G) Pin #3 Filament Common (Fc) Pin #4 Grid (G) Pin #5 Filament #2 (F2) About the Company | ETI Gauges: Principles of Operation | Ionization Gauges | Special ETI Gauges | OEM and Custom Designs Configurations of Standard Gauges | Earlier Model Gauges | Replacement Filament Assemblies | ETI Custom Filaments | ETI Stems | | Contact ETI | Return Home | ©1999 ETI