The Televac model 3D Mini BA Hot Cathode Ionization sensor maximizes performance with proven accuracy and unmatched durability in high vacuums. The 3D sensor can be controlled by a Televac MP3DR active gauge, MC300 gauge controller, or MM200 gauge controller.
The miniature sensor all metal rugged construction is ideal for most applications, with the primary enclosure and many of the internal elements fabricated of 304 stainless steel. The dual filaments are Yttria coated Iridium and are individually supported to provide uniform output over variations in temperature and age and exhibit less calibration error. Coated Iridium filaments tend to withstand pressure bursts with a robustness not possible with lesser materials. The typical user should experience a filament lifetime of 10,000 hours. The precision ion collector is 0.004” diameter, decreasing the x-ray limit of the sensor.
Applications:
Analytical Instruments
Decorative Coating
Cryogenics
Electron Microscopy
Environmental Simulation
High Energy Physics
Illumination Product Mfg.
Magnetic Media Mfg.
Molecular Beam Epitaxy
Optical & Functional Coating
Physical Vapor Deposition
Semiconductor Device Mfg.
Surface Science
Thermal Processing
Thin Film Deposition
Specifications:
Measurement Range: 1 x 10^‐2 to 1 x 10^‐10 Torr
Sensitivity for Nitrogen: 10/Torr
Bakeout Temperature: 200 C
Operating Temperature: 0 to 40C
X‐Ray Limit: <1 x 10^‐10 Torr
Filament Type: Dual Yttria Coated Iridium
Filament Emission Current: .01, 0.1, 1.0mA or Auto
Filament Bias Potential: +30 Volts +/‐ 0.3%
Grid Potential: +180 Volts +/‐ 0.3%
Filament Heating Voltag:e 1.5 Volts(2.5 V Max.)
Filament Heating Current: 2 Amps(3 A Max.)
Mounting Orientation: Any
Degas Powe:r 5 Watts e‐beam