Hot Ionization Gauges

BAG05x

Bayard-Alpert passive gauge heads for VGC083

BAG05X-UHV
Drop-in Options

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Product configurator

Gemini™ MxG5xx

Type
Sensor version
Ionization chamber
Emmision current
Flange connection to vacuum chamber
Switching function
Electrical connection
Digital interface
Analog output signal
Your configuration
inficon-gauge
Gemini™ MxG5xx
Flange
DN 16 ISO-KF
Switching functions
None
Electrical Connection
FCC, 8-pin
Digital Interface
None
Measurement range
1.2 - 8.68 V
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Personal information
Product
inficon-gauge
Gemini™ MxG5xx
Gemini™ MAG500
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The hot cathode ionization passive vacuum gauge heads BAG05x are nude (BAG050, BAG051) or glass tube (BAG052, BAG053) Bayard-Alpert sensors designed for use with the Vacuum Gauge Controller VGC083A/B.

  • BAG050 is an electron bombardment (EB) degas nude ionization vacuum gauge capable of UHV pressure measurement as low as 2×10-11 mbar.
  • BAG051 is a resistive (I2R) degas nude ionization vacuum gauge capable of pressure measurement as low as 5×10-10 mbar.
  • BAG052 and BAG053 are resistive degas (I2R) glass enclosed ionization vacuum gauges capable of pressure measurement as low as 5×10-10 mbar.

Ytrium oxide coated iridium filaments are offered for general vacuum applications where air and inert gases, such as N2 and argon, are present. Tungsten filaments are offered for specific applications where yttrium oxide coated iridium filaments are not compatible. The BAG05x gauge heads are designed for low outgassing vacuum systems and can be baked up to extreme high temperature (450 °C). BAG05x gauges are largely compatible and may be operated with other user-selected compatible vacuum gauge controllers. 

Advantages

  • 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
  • Degas: all models can be degassed using in electron bombardment (EB), BAG051, BAG052 and BAG053 can also be degassed using resistive degas (I2R)

Typical applications

  • Industrial or R&D applications requiring precise vacuum measurement in the high/ultra-high vacuum range and high temperature bake-out

Operating Units

  • Vacuum Gauge Controller VGC083A/B

Specifications

BAG050
BAG051
BAG052
BAG053
Measurement principleBayard-Alpert, hot cathode ionization
Gauge typeElectron bombardment (EB) degas nude gauge
Measurement range2.7×10-11 ... 1.3×10-3 mbar
Accuracy (N2)±20 % of reading
Repeatability (N2)±5 % of reading
FeedthroughAl2O3 ceramic
Bake-out temperature≤450°C
Materials exposed to vacuumStainless steel, Al2O3, W, Y2O3
Features

Available with following filament options:
- Dual, Y2O3 coated iridium (Ir)
- Dual, tungsten (W)

Measurement principleBayard-Alpert, hot cathode ionization
Gauge typeResistive (I2R) degas nude gauge
Measurement range5.3×10-10 ...1.3×10-3 mbar
Accuracy (N2)±20 % of reading
Repeatability (N2)±5 % of reading
FeedthroughAl2O3 ceramic
Bake-out temperature ≤450°C
Materials exposed to vacuumStainless steel, Al2O3, W, Y2O3
Features

Available with following filament options:
- Single, Y2O3 coated iridium (Ir)
- Dual, Y2O3 coated iridium (Ir)
- Dual, tungsten (W)

Measurement principleBayard-Alpert, hot cathode ionization
Gauge typeResistive (I2R) degas glass enclosed gauge
Measurement range 5.3×10-10 ... 1.3×10-3 mbar
Accuracy (N2)±20 % of reading
Repeatability (N2)±5 % of reading
Feedthroughglass
Bake-out temperature ≤450°C
Materials exposed to vacuumGlass, Al2O3, W, Y2O3
FeaturesSingle Y2O3 coated iridium (Ir) filament
Measurement principleBayard-Alpert, hot cathode ionization
Gauge typeResistive (I2R) degas glass enclosed gauge
Measurement range5.3×10-10 ... 1.3×10-3 mbar
Accuracy (N2)±15 % of reading
Repeatability (N2)±5 % of reading
Feedthroughglass
Bake-out temperature ≤450°C
Materials exposed to vacuumGlass, Al2O3, W, Y2O3
FeaturesAvailable with following filament options:
- Dual, Y2O3  coated iridium (Ir)
- Dual, tungsten (W)

Part Number

Part number
Accessories
 BAG050
399-720BA nude EB-degas, DN40CF, dual iridium filament (Ir)
399-721BA nude EB-degas, DN40CF, dual tungsten filament (W)
399-730Spare dual iridium filament (Ir)
399-731Spare dual tungsten filament (W)
  
 BAG051
399-725BA nude I2R, DN40CF, single iridium filament (Ir)
399-726BA nude I2R, DN40CF, dual iridium filament (Ir)
399-727BA nude I2R, DN40CF, dual tungsten filament (W)
399-735Spare V-iridium filament (Ir)
399-736Spare dual iridium filament (Ir)
399-737Spare dual tungsten filament (W)
  
 BAG052
399-740BA glass I2R, ¾’’ Kovar metal inlet port, single iridium filament (Ir)
399-741BA glass I2R, 1’’ Kovar metal inlet port, single iridium filament (Ir)
399-742BA glass I2R, ¾’’ glass inlet port, single iridium filament (Ir)
399-743BA glass I2R, 1’’ glass inlet port, single iridium filament (Ir)
399-744BA glass I2R, DN 25 ISO-KF, single iridium filament (Ir)
399-745BA glass I2R, DN 40 ISO-KF, single iridium filament (Ir)
399-746BA glass I2R, DN 16 ISO-CF, single iridium filament (Ir)
399-747BA glass I2R, DN 40 ISO-CF, single iridium filament (Ir)
  
 BAG053
399-750BA glass I2R, ¾’’ Kovar metal inlet port, dual tungsten filament (W)
399-751BA glass I2R, 1’’ Kovar metal inlet port, dual tungsten filament (W)
399-752BA glass I2R, ¾’’ glass inlet port, dual tungsten filament (W)
399-753BA glass I2R, 1’’ glass inlet port, dual tungsten filament (W)
399-754BA glass I2R, DN 25 ISO-KF, dual tungsten filament (W)
399-755BA glass I2R, DN 40 ISO-KF, dual tungsten filament (W)
399-756BA glass I2R, DN 16 ISO-CF, dual tungsten filament (W)
399-757BA glass I2R, DN 40 ISO-CF, dual tungsten filament (W)
 Cables to VGC083A
 to BAG050 50 °C
399-7803 m (9 ft)
399-7818 m (25 ft)
399-78215 m (50 ft)
  
 to BAG050 200°C 
399-7703 m (9 ft)
399-7718 m (25 ft)
399-77215 m (50 ft)
399-779Touch protection cover for cables 200 °C (BAG050, BAG051)
  
 Cables to VGC083B
 to BAG051 50°C
399-7803 m (9 ft)
399-7818 m (25 ft)
399-78215 m (50 ft)
  
 to BAG051 200°C
399-7703 m (9 ft)
399-7718 m (25 ft)
399-77215 m (50 ft)
399-779Touch protection cover for cables 200 °C (BAG050, BAG051)
  
 to BAG052/053 50°C
399-7903 m (9 ft)
399-7918 m (25 ft)
399-79215 m (50 ft)
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