BAG05x UHV Bayard Alpert Hot Ion Passive Vacuum Gauge

The INFICON Bayard-Alpert passive vacuum gauge heads BAG050, BAG051, BAG052 and BAG053 are designed for use with the INFICON Vacuum Gauge Controller VGC083A & VGC083B. Yttria coated iridium filaments are offered for general vacuum applications in air and inert gases such as N2 and argon. Select tungsten filaments for gases that are not compatible with yttria coated iridium filaments. BAG05x gauges may also be operated with compatible vacuum gauge controllers from other manufacturers. The INFICON passive Bayard-Alpert ionization vacuum gauges (BAG05x) are offered in three different configurations:

BAG050 is a EB-degas UHV nude ionization vacuum gauge capable of pressure measurement as low as 2×10-11 Torr.

BAG051 is a resistive degas (I2R) nude ionization vacuum gauge capable of pressure measurement as low as 4×10-10 Torr.

BAG052 and BAG053 are resistive degas (I2R) glass enclosed ionization vacuum gauges capable of pressure measurement as low as 4×10-10 Torr.

 

 

 

Benefits

  • Reliable and proven gauge head design

  • Drop in for most nude hot ion gauge heads

  • Wide range of emission currents (100 μA to 10 mA)

  • Available with single / dual yttria coated iridium and dual tungsten filament cathode assemblies

  • Degas: All models can be degased using EB (electron bombardment).

    BAG051, BAG052 and BAG053 can also be degased using resistive degas (I2R)

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Specifications

Type BAG050 BAG051 BAG052 BAG053 BAG055
Measurement range 2.7 x 10-11 ... 1.3 x 10-3 5.3 x 10-10 ... 1.3 x 10-3 5.3 x 10-10 ... 1.3 x 10-3 5.3 x 10-10 ... 1.3 x 10-3  
Accuracy - N2 (typical) % 20 20 20 +/-20 +/-15
X-ray limit Torr 2 x 10-11 4 x 10-10 4 x 10-10 4 x 10-10 5 x 10-10
Sensitivity - N2 Torr 25-1 10-1 10-1 10-1 10-1 nominal
Degas          
EB (electr. bombardment) W ≤40 70 nominal, ≤100 ≤100 ≤100 ≤3
I2R (resistance heated) - 6.3 ... 7.5 V (ac) at 10 A 6.3 ... 7.5 V (ac) at 10 A -
Bakeout temperature °C 450 450 450 450 200
Filament          
Current A 2.5 ... 3.5 4 ... 6 4 ... 6 4 ... 6 2 ... 2.5
Voltage V (dc) 3 ... 5 3 ... 5 3 ... 5 3 ... 5 1.5 ... 2
Potential V (dc) +30 +30 +30 +30 +30
Grid potential V (dc) +180 +180 +180 +180  
Collector potential V 0 0 0 0 0
Collector tungsten (W), ø0.005'' tungsten (W), ø0.010'' tungsten (W), ø0.010'' tungsten (W), ø0.010'' tungsten (W), ø0.010''
Filament dual iridium (Ir), or dual tungsten (W) single hairpin iridium (Ir), or dual hairpin iridium (Ir), or dual tungsten (W) single hairpin iridium (Ir) dual hairpin tungsten (W) dual yttria coated iridium
Grid photo etched closed grid non-sag double helical 0.025'' tungsten (W) grid non-sag double helical 0.025'' tungsten (W) grid non-sag double helical 0.025'' tungsten (W) grid etched SS
Insulator ceramic ceramic glass to metal glass to metal glass
Glass envelope - - 2 ⅟₄'' dia x 5'' long 2 ⅟₄'' dia x 5'' long  -
Mounting orientation any any any any any
Length          
Overall in. 4 ⅟₈ 4 ⅟₈ 6 6 2.7 ... 3.8
Insertion in. 3 3 - -  -
Flange 2 ¾'' CF / NW35CF Conflat 2 ¾'' CF / NW35CF Conflat

Kovar metal port
1'' Kovar metal port
¾'' glass port
1'' glass port
NW25KF
NW40KF
1 ⅟₃'' / NW16CF Mini-Conflat
2 ¾'' CF / NW35CF Conflat

Kovar metal port
1'' Kovar metal port
¾'' glass port
1'' glass port
NW25KF
NW40KF
1
'' / NW16CF Mini-Conflat
2 ¾'' CF / NW35CF Conflat

¾'' tube

DN16 ISO-KF

DN 25 ISO-KF

DN 40 ISO-KF

DN 16 CF-R Mini-Conflat

DN 40 CF-R Conflat

8 VCR female

Flange material

stainless steel 304

stainless steel 304 glass Nonex 7720 glass Nonex 7720 stainless steel 304
Ordering information BAG050_BAG051_BAG052_BAG053_BAG055.png
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