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Replacement Ion (Hot Filament) Gauge Tubes

Bayard-Alpert ion gauges have a reasonably linear response from 1 x 10-4 Torr to 1 x 10-9 Torr, with gauge sensitivities from 5 to 20 Torr-1. B-A gauges are available with one or two filaments (the second acting as a spare) and with two filament materials thoria-coated iridium, used in oxygen-rich applications and for “burn-out” protection if accidentally vented and tungsten, used for lower cost and in residual gases containing halogens.

Legend:

G = Grid
F1, F2 = Filament
FC = Filament Common
C = Ion Collector

Figure1 Figure2 Figure3

Figure 1

Figure 2

Figure 3

Figure4
Figure5
Figure6

Figure 4

Figure 5

Figure 6


Ordering Table

Supplementary Parts  = Click icon below to view Supplementary Parts.

Description Gauge Tube
Type
Figure Manufacturer PartNo Price Add Item
Supplementary Parts
1 x ThO-Ir filament, 3/4" O.D., 10 Torr-1 sensitivity
B-A Ion, 2.75" CF
1
KJLC
G075F
$198.00
1 x ThO-Ir filament, 3.4" O.D., 10 Torr-1 sensitivity
B-A Ion, Kovar Tube
1
KJLC
G075K
$173.00
1 x ThO-Ir filament, 3.4" O.D., 10 Torr-1 sensitivity
B-A Ion, Kovar Tube
1
KJLC
G075K-PT
$187.00
1 x ThO-Ir filament, 3.4" O.D., 10 Torr-1 sensitivity
B-A Ion, Nonex Tube
1
KJLC
G075N
$150.00
2 x W filament, 3.4" O.D., 12.5 Torr-1 sensitivity
B-A Ion, Kovar Tube
2
KJLC
G075TK
$151.00
Supplementary Parts
1 x ThO-Ir filament, 1.0" O.D., 10 Torr-1 sensitivity
B-A Ion, 2.75" CF
1
KJLC
G100F
$190.00
1 x ThO-Ir filament, 1.0" O.D., 10 Torr-1 sensitivity
B-A Ion, 2.75" CF
1
KJLC
G100F-PT
$205.00
1 x ThO-Ir filament, 1.0” O.D., 10 Torr-1 sensitivity
B-A Ion, Kovar Tube
1
KJLC
G100K
$144.00
1 x ThO-Ir filament, 1.0” O.D., 10 Torr-1 sensitivity
B-A Ion, Kovar Tube
1
KJLC
G100K-PT
$188.00
Supplementary Parts
1 x ThO-Ir filament, 1.0" O.D., 10 Torr-1 sensitivity
B-A Ion, KF25
1
KJLC
G100KQF25
$197.00
Supplementary Parts
1 x ThO-Ir filament, 1.0" O.D., 10 Torr-1 sensitivity
B-A Ion, KF40
1
KJLC
G100KQF40
$212.00
1 x ThO-Ir filament, 1.0” O.D., 10 Torr-1 sensitivity
B-A Ion, Nonex Tube
1
KJLC
G100N
$136.00
1 x ThO-Ir filament, 1.0” O.D., 10 Torr-1 sensitivity
B-A Ion, Nonex Tube
1
KJLC
G100N-PT
$167.00
Supplementary Parts
2 x W filament, 1.0" O.D., 12.5 Torr-1 sensitivity
B-A Ion, 2.75" CF
2
KJLC
G100TF
$163.00
2 x W filament, 1.0” O.D., 12.5 Torr-1 sensitivity
B-A Ion, Kovar Tube
2
KJLC
G100TK
$136.00
1 x ThO-Ir filament, 10 Torr-1 sensitivity
B-A Ion, Nude
5
KJLC
G8120-A
P.O.R.
Supplementary Parts
2 x ThO-Ir filament, 25 Torr-1 sensitivity
B-A Ion, Nude
6
KJLC
G8130
$406.00
Supplementary Parts
2 x W filament, 25 Torr-1 sensitivity
B-A Ion, Nude
6
KJLC
G8130T
$378.00
Supplementary Parts
1 x ThO-Ir filament, 10 Torr-1 sensitivity
B-A Ion, Nude
5
KJLC
G8140
$412.00
Supplementary Parts
2 x ThO-Ir filament, 10 Torr-1 sensitivity
B-A Ion, Nude
6
KJLC
G8140-DI
$458.00
2 x W filament, 1/2" O.D., 12.5 Torr-1 sensitivity
B-A Ion, 7052 Glass Tube
3
KJLC
GX050-015-2
$136.00
2 x W filament, 3/4" O.D., 12.5 Torr-1 sensitivity
B-A Ion, 7052 Glass Tube
3
KJLC
GX075-016-2
P.O.R.
2 x W filament, 3/4" O.D., 12.5 Torr-1 sensitivity
B-A Ion, Pyrex Tube
3
KJLC
GX075-016-P
P.O.R.
2 x W filament, 1.0” O.D., 12.5 Torr-1 sensitivity
B-A Ion, 7052 Glass Tube
3
KJLC
GX100-017-2
P.O.R.
1 x ThO-Ir filament, 1.0" O.D., 8 Torr-1 sensitivity
B-A Ion, 2.75" CF
4
KJLC
GX100-564F
$203.00
1 x ThO-Ir filament, 1.0” O.D., 7.5 Torr-1 sensitivity
B-A Ion, Kovar Tube
4
KJLC
GX100-564K
$160.00
1 x ThO-Ir filament, 1.0” O.D., 7.5 Torr-1 sensitivity
B-A Ion, Nonex Tube
4
KJLC
GX100-564N
$141.00

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