Ionization vacuum sensor Televac® 3F

hot cathodeminiature

The Televac® 3F Mini BA Hot Cathode Ionization UHV gauge maximizes performance with proven accuracy and unmatched durability in high vacuums. The miniature sensor’s rugged all-metal 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 gauge.