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Stanford Research System (SRS) offers three types of gauges for the IGC100 Ion Gauge Controller: glass tubulated, nude, and nude-UHV Bayard-Alpert ionisation gauges. We also supply convection enhanced Pirani gauges. All single, hair-pin shaped filaments used in SRS gauges are spring tensioned to eliminate filament sag. This allows the user to mount the gauge in any orientation. Dual-filament assemblies provide security against filament burnout.
Product # |
Available Bayard-Alpert Ionization Gauges |
GR-100F |
2.75" CF, 1" side tube, single filament, ThO2/Ir |
GW-100F |
2.75" CF, 1" side tube, dual filament, tungsten |
NR-F |
Nude, bi-filar helix grid, dual filament, ThO2/Ir |
NR-F-UHV |
Nude, closed cage grid, dual filament, ThO2/Ir |
NW-F-UHV |
Nude, closed cage grid, dual filament, tungsten |
Bayard-Alpert Gauge Model Number/Selection and Cross-Reference Table
Type |
Description |
Pin |
SRS |
Granville |
ETI |
Duniway |
Kurt J. |
Varian |
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Glass |
Connection |
Filament |
|
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Type |
Diameter |
(count) |
||||||||
2.75" |
1 in. |
ThO2/Ir |
Fig. 1 |
GR-100F |
274008 |
4336F/1 |
I-CFF-275 |
G100F |
K2471303 |
|
tungsten |
Fig. 2 |
GW-100F |
274018 |
4336TF/1 |
T-CFF-275 |
G100TF |
K7360307 |
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Nude |
Range |
Anode |
Filament |
|
||||||
Std. |
Bi-filar |
ThO2/Ir |
Fig. 3 |
NR-F |
274028 |
8140 |
I-NUDE-BAC |
G8140 |
L5150-302 |
|
UHV |
closed |
ThO2/Ir |
Fig. 4 |
NR-F-UHV |
274023 |
8130 |
I-NUDE-F |
G8130 |
971-5007 |
|
UHV |
closed |
tungsten |
Fig. 4 |
NW-F-UHV |
274022 |
8130T |
T-NUDE-F |
G8130T |
971-5008 |
|
Glass Tubulated |
Nude |
Nude-UHV |
Physical Data |
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Connection |
Side tube or 2.75" CF flange |
2.75" CF flange |
2.75" CF flange |
Side tube diameter |
0.75" or 1" |
N.A |
N.A |
Side tube material |
Pyrex or Kovar (#1) |
N.A |
N.A |
Envelope |
Nonex 7720 Glass, |
Nude |
Nude |
Mounting position |
Any, vertical preferred (#2) |
Any |
Any |
Collector |
Tungsten, 0.05" diameter |
Tungsten, 0.05" diameter |
Tungsten, 0.05" diameter |
Filament |
Single ThO2/Ir (#4) or dual tungsten |
Single ThO2/Ir (#4), replaceable |
Dual ThO2/Ir or dual tungsten, replaceable |
Grid |
Tungsten, bi-filar helix configuration |
Tungsten, bi-filar helix configuration |
Tantalum and Pt/Moly support, closed end "squirrel" cage |
Overall length, max. |
6.0" |
4.13" |
4.13" |
Insertion length, max. |
N.A. |
3.30" |
3.00" |
Operating Data |
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Operating pressure |
2 × 10-10 to 10-3 Torr |
4 × 10-10 to 10-3 Torr |
2 × 10-11 to 10-3Torr |
Sensitivity for N2 (nominal) |
10/Torr |
10/Torr |
25/Torr |
X-ray limit |
2 × 10-10 Torr |
4 × 10-10 Torr |
2 × 10-11 Torr |
Electron bombardment degas, |
70 W (nominal), 100 W (max.) |
70 W (nominal), 100 W (max.) |
40 W (max.) |
Resistance heated degas |
6.3 to 7.5 V @ 10 A |
6.3 to 7.5 V @ 10 A |
N.A. |
Bakeout temperature |
250 °C |
450 °C |
450 °C |
Electrical Operating Parameters (#3) |
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Anode grid bias voltage |
180 VDC |
180 VDC |
180 VDC |
Collector bias voltage |
0 VDC |
0 VDC |
0 VDC |
Filament bias voltage |
30 VDC |
30 VDC |
30 VDC |
Filament supply current |
4 to 6 A |
4 to 6 A |
4 to 6 A |
Filament supply voltage |
3 to 5 VDC |
3 to 5 VDC |
3 to 5 VDC |
|
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Notes: |
Photo | Product | Price | |
---|---|---|---|
![]() | SRS IGC100 Ion Gauge Controller | > | |
![]() | SRS PG108 UHV Compatible Pirani Gauge | > |