Bayard-Alpert Ion Gauge - Hot Cathode

ETI 8140 Nude Bayard-Alpert Vacuum Gauge
ETI 8130 Hot Ion Vacuum Gauge
ETI 3302 Nude Bayard-Alpert Vacuum Gauge
  1. ETI 8140 Nude Bayard-Alpert Vacuum Gauge
  2. ETI 8130 Hot Ion Vacuum Gauge
  3. ETI 3302 Nude Bayard-Alpert Vacuum Gauge
Download Datasheet

Part Numbers: 3301-8305-012 3301-8305-02, 3301-8305-051, 3301-8306-02, 3302-8305-012, 3302-8305-02, 3302-8305-051, 3302-8305-212, 3302-8305-251, 3303-8305-451

Compatible Vacuum Controllers:

  • MKS Granville Phillips Models 260, 270, 280, 303, 306, 307, 330, 340, 350
  • MKS Instruments 290, 919, 929
  • Perkin Elmer DGC3
  • Varian 831, 836, 842, 844, 845, 880, 971-0003, 971-0014, 971-1008, Multi-Gauge
  • Veeco RG2, RG3, RG21, RG31, RG81, RG83, RG84, RG830, RG840, RG1000, RG1002

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

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 coated iridium filaments or two

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Purchase

Bayard-Alpert Ion Gauges

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PriceBuyPN TFCPn gp mksFilamentCoatingFlangePin config
$539.00
3302-8305-0122740222 TungstenNoneCF405 Pin
$537.00
3302-8305-02None2 TungstenNoneCF406 Pin
$560.00
3302-8305-0512740412 TungstenNoneCF405 Pin
$523.00
3302-8305-2122740502 TungstenNoneKF405 Pin
$547.00
3302-8305-2512740572 TungstenNoneKF405 Pin
$551.00
3303-8305-4512740431 IridiumCoatedCF406 Pin
$560.00
3301-8305-0122740232 IridiumCoatedCF405 Pin
$558.00
3301-8305-02None2 IridiumCoatedCF406 Pin
$583.00
3301-8305-0512740422 IridiumCoatedCF405 Pin
$449.00
3301-8306-02None2 IridiumCoatedNo Flange (1.5" Header)6 Pin

Replacement Filament Assemblies (RFA)

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PriceBuyPN TFCPn gp mksFilamentCoatingFlangePin config
$77.00
5-8325-022740242 TungstenNoneNoneNone
$165.00
5-8325-012740252 IridiumCoatedNoneNone
$110.00
5-8325-032740291 IridiumCoatedNoneNone

6 Pin Dual Filament Configuration

Pinout diagram for the 8140 Dual Tungsten Bayard-Alpert Vacuum Gauge.
Pin 1 Grid
Pin 2 Grid
Pin 3 Collector
Pin 4 Filament #1
Pin 5 Common
Pin 6 Filament #2

6 Pin Single Filament Configuration

Pinout diagram for the 8140 Single Iridium Bayard-Alpert Vacuum Gauge.
Pin 1 Grid
Pin 2 Grid
Pin 3 Collector
Pin 4 Filament
Pin 5 Filament
Pin 6 Not Used

5 Pin Configuration

Pinout diagram for the 8130 Bayard-Alpert Vacuum Gauge.
Pin 1 Grid
Pin 2 Collector
Pin 3 Filament #1
Pin 4 Common
Pin 5 Filament #2

Physical Data

Connection 2-3/4”, 1” conflat or KF 40 flange
Envelope None
Mounting Position Vertical
Collector .005” tungsten
Filament Replaceable coated iridium or dual tungsten (8130)
Grid Ta and Pt/Mo support squirrel cage

Operating Data

Sensitivity for N2 25/Torr
X-ray Limit 2*10-10 Torr
Operating Pressure 2*10-11 to 1*10-3 Torr
Electron-Bombardment Degas 40 W @ 500 V
Resistance-Heated Degas n/a
Bakeout Temperature 450 °C