The ETI series of Bayard-Alpert ion gauges (also called a vacuum gauge, vacuum transducer, BA gauge, hot ion, or hot cathode) feature burnout-resistant yttria or thoria coated iridium filaments or two tungsten filaments for vacuum measurement. This vacuum gauge has a wide measurement range of 10-10 to 10-3 Torr and can be outgassed for extended life of the vacuum gauge and cleaning of hot cathode contamination. The dual filament vacuum gauge design allows you to use the second filament when the first filament burns out or becomes heavily contaminated in this vacuum transducer. Filaments can also be replaced with our replacement filament assemblies (RFA) found at the bottom of this page.
Looking for a cleanable, longer lasting solution? We suggest looking at our cold cathode technology, such as the 7FCS cold cathode vacuum gauge. This is a different vacuum gauge technology for ion gauge pressure measurement using a cold cathode vacuum transducer (instead of a hot cathode) which is less susceptible to contamination and is more easily cleaned when the vacuum gauge does become contaminated.
Features and Benefits:
Low cost vacuum gauge
Degassing and dual filaments for extended vacuum gauge lifetime
Replacement filament assemblies (RFA) for extended life
Accurate and reliable hot cathode technology
Contamination resistant vacuum transducer
Excellent customer support for vacuum transducers