Hot Ionization Gauges
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Bayard-Alpert passive gauge heads for VGC083
- Long standing, reliable and proven gauge head design
- Drop-in replacement for most nude hot ion gauge heads
- Wide range of emission currents (100 μA to 10 mA)
- Available with single/dual yttrium oxide coated iridium and dual tungsten filament cathode assemblies

Single Bayard Alpert sensor, measurement range from 5×10-10 mbar to 2.7×10-2 mbar, Excellent repeatability
- Measurement range from 5×10-10 mbar to 2.7×10-2 mbar (3.75×10-10 Torr to 5×10-2 Torr)
- Excellent repeatability in the process pressure range from 10-8 … 10-2 mbar of 5%
- Overpressure detection protects the filament from premature burnout
- Two long-life yttrium oxide coated iridium filaments

Single Hot Ion gauge, OLED Display, RS485
- Measurement range from 1.3 × 10-9 to 6.7×10-2 mbar
- Two standard long-life yttrium oxide coated iridium filaments
- Set-point, analog output and RS485
- OLED display with keypad

Bayard-Alpert Pirani Combination Gauge, single hot ion filament
- Extremely wide measurement range from 5×10-10 mbar to atmosphere
- Excellent repeatability in the process pressure range
- The Pirani interlock protects the Bayard-Alpert system from premature filament burnout
- Long-life yttrium oxide coated iridium filament

Functions as two gauges in a single compact unit measuring from 5×10-10 mbar to atmosphere.
- Extremely wide measurement range from 5×10-10 mbar to atmosphere
- Two long-life yttrium oxide coated iridium filaments
- Excellent repeatability in the process pressure range
- Pirani interlock protects the filament from premature burnout

Bayard-Alpert Pirani Capacitance Diaphragm Gauge (Triple-Gauge™), BCG450, combines the advantages of three different technologies in a single, compact, economical package to measure process and base pressure from 5×10-10 to 1500 mbar (3.75×10-10 to 1125 Torr)
- Pirani, Bayard-Alpert and CDG sensors in one gauge
- Gas-type-independent pressure measurement above 10 Torr
- Pirani interlock protects the hot filament from premature burnout
- Automatic Pirani adjustment reduces operator interventions

High Pressure Hot Ionization Pirani Gauge, HPG400, combines High Pressure Hot Ionization and Pirani sensors in a single, compact, economical package to measure pressure from 2×10-6 mbar to atmosphere (1.5×10-6 Torr to atmosphere)
- The high pressure hot ion gauge delivers accurate, reliable pressure measurements from 1×10-5 … 1 mbar
- User selectable hot ion emission activation between 5×10-2 and 1 mbar
- Pirani interlock protects the hot filament from premature burnout

Hot cathode ionization passive gauge heads for IM540
- High accuracy of the measurements due to individually calibrated sensing system
- Exchangeable cathode
- Extreme high temperature bake-out up to 400 °C

Mini hot ion Bayard-Alpert passive gauge head for VGC083
- Long standing, reliable and proven gauge head design
- Drop-in replacement thanks to its compact size, large choice of connection flanges and fittings
- Dual yttrium oxide coated iridium filament cathode assembly
- Electron bombardment (EB) degassing

The new standard of ionization vacuum gauge
- Developed for applications requiring high measurement accuracy in the high and ultra-high vacuum range
- Electrode system configuration according to ISO/WD TS 6737
- True pressure for all gas species thanks to predictable relative gas sensitivity with small uncertainty