Televac’s new All Metal Enclosed B/A-S Ionization Gauge with Spring Supported Filament is designed and engineered to provide highly accurate vacuum measurement with less calibration errors. The gauge offers a combination of features that are superior to conventional B/A (Bayard-Alpert) gauge designs including a spring supported filament for greater stability.

Universal Design–allows gauge to be easily used with other manufacturers B/A controllers

Spring Supported Filament–delivers a more uniform output over variations in temperature and age with less calibration errors

Grounded Metal Enclosure Wall and Conducting Shields–provide constant potential and protect the delicate filament and anode assemblies from unintended shock and physical damage

Thoria Coated Iridium Filament–minimizes burnout for longer filament life

Available Televac MM 200 Hot Filament Controller and Cable–provides a single source solution (or system) for critical vacuum measurement

Measurement Range

2 x 10-10 to 1 x 10-3 Torr

Sensitivity for N2

10/Torr

Degas Power

40 Watts

Bakeout Temperature

450°C (cable removed)

Operating Temperature

0-40°C

X-Ray Limit

2 x 10-10 Torr

Filament Emission Current

4 to 6 Amps

Filament Bias Potential

+30 Volts

Grid Potential

+180 Volts

Filament Heating Voltage

3-5 Volts

Filament Heating Current

4-6 Amps

Dimensions

Ø1.75" OD x 5.7" Long w/o Flange

Envelope

1-3/4" OD Stainless Steel

Vacuum Connection

Conflat

Materials

UHV Compatible

Filaments

Thoria Coated Iridium

Ion Collector

0.007 Tungsten

Grid

Tungsten