 |
| Nude bakeable gauge tube |
Nude gauges are used when direct access to a vacuum chamber is needed. Nude gauges prevent errors which have been ascribed to glass envelopes and associated tubulations. They have a closed grid structure which minimizes gas reactions and improves sensitivity by a factor of 2-1/2. The improved sensitivity and a .005" collector results in a low x-ray limiting current corresponding to a pressure of about 2 x 10-11 Torr.
The gauge is available mounted on a 2-3/4" O.D. UHV flange, greatly simplifying filament replacement. Standard filaments are made of tungsten. For long life in higher pressure and/or active gas environments, we recommend use of the thoria-coated iridium filament.
Medium to UHV Vacuum Pressure Measurement
Range: 10-3 to 10-11 Torr
Linear response in 10-4 and 10-5 Torr ranges with reduced emission
Nude configuration
Bayard-Alpert type
Ordering Information
Ion Gauge Tubes.
-x refers to option suffixes below
| Model No. | Description | Price |
|---|
| IG-2-x | Nude ionization gauge tube mounted on 2-3/4" ConFlat flange. | Contact |
| IG-2F-x | Replacement filaments for nude ion gauge tube. | Contact |
Options
| Suffix | Description | Additional Price |
|---|
| -W | Tungsten filaments | N/C |
| -I | Thoria-coated iridium filaments | Contact |
To order:
For example, to order a Pyrex encapsulated tube with thoria-iridium filaments and terminated with a ConFlat flange, one would write: IG-1-P-I-CF.