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 |
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To select the appropriate gauge, follow the
steps below using the Model Numbers / Selection & Cross-Reference
Table (next page).
- Select the type of gauge: glass tubulated,
nude or nude-UHV
- Select filament type: ThO2/Ir or tungsten,
single or dual
- Note the SRS part number
Once you have selected a gauge, choose the
appropriate cable using the pin connector diagram.
Bayard-Alpert Gauge Pin Connector Configuration
|
Product #
|
Available
Bayard-Alpert Ionization Gauges |
|
|
GR-075K
|
Kovar, 0.75", single filament, ThO2/Ir
|
 |
|
GR-075P
|
Pyrex, 0.75", single filament, ThO2/Ir
|
|
|
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 finalment,
ThO2/Ir |
|
|
NR-F-UHV
|
Nude, closed cage grid, dual finalment,
ThO2/Ir |
|
|
NW-F-UHV
|
Nude, closed cage grid, dual finalment,
tungsten |
|
SRS offers three types of gauges for the IGC100
Ion Gauge Controller: glass-tubulated,
nude, and nude-UHV Bayard-Alpert ionization gauges. We also supply
convection-enhanced Pirani gauges.
Single and Dual Filaments
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.
|
Bayard-Alpert Guage Model Number/Selection
and Cross-Reference Table
| Type |
Description |
Pin
Config/
SRS
Cable# |
SRS
Part# |
Granville
-Phillips |
ETI |
Duniway
Stockroom |
Kurt J
.Lesker |
Varian |
Glass
Tubulated |
Connection |
Filament
Material |
|
| Type |
Diameter |
(count) |
Metal
Tube
(Kovar) |
0.75 in. |
ThO2/Ir
(single) |
Fig. 1 |
GR-075K |
274003 |
4336K |
I-075-K |
G075K |
K2471305 |
tungsten
(dual) |
Fig. 2 |
GW-075K |
274013 |
4336TK |
T-075-K |
G075TK |
K7360304 |
2.75"
Conflat®
Flange |
1 in.
side
tube |
ThO2/Ir
(single) |
Fig. 1 |
GR-100F |
274008 |
4336F/1 |
I-CFF-275 |
G100F |
K2471303 |
tungsten
(dual) |
Fig. 2 |
GW-100F |
274018 |
4336TF/1 |
T-CFF-275 |
G100TF |
K7360307 |
Nude
(2.75" CF
flange) |
Range |
Anode
Grid |
Filament
Material
(count) |
|
| Std. |
Bi-filar
Helix |
ThO2/Ir
(single) |
Fig. 3 |
NR-F |
274028 |
8140 |
I-NUDE-BAC |
G8140 |
L5150-302 |
| UHV |
closed
end
cage |
ThO2/Ir
(dual) |
Fig. 4 |
NR-F-UHV |
274023 |
8130 |
I-NUDE-F |
G8130 |
971-5007 |
| UHV |
closed
end
cage |
tungsten
(dual) |
Fig. 4 |
NW-F-UHV |
274022 |
8130T |
T-NUDE-F |
G8130T |
971-5008
|
|
|
 |
|
|
|
|
Glass Tubulated
|
Nude
|
Nude -UHV
|
| Physical
Data |
|
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,
2.25" dia. × 5.25" long
|
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 |
|
Operating pressure
|
2 × 10-10
to 10-3 Torr
|
4 × 10-10
to 10-3 Torr
|
2 × 10-11
to 10-3 Torr
|
|
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,
Power @500V
|
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) |
|
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
|
|
|
|
|
Notes:
1. Glass-to-metal transition
2. Vertical orientation provides strain relief for electrode structures
increasing long-term stability
3. Direct current (DC) bias and supply voltages are recommended for
all electrical connections.
4. Single filaments are hair-pin shaped and spring loaded to eliminate
sagging. |
Stanford Research Systems, Inc. • 1290-D
Reamwood Ave., Sunnyvale, CA 94089
Phone: (408) 744-9040 • Fax: (408) 744-9049 • email: info@thinkSRS.com
• www.thinkSRS.com
© Stanford Research Systems, Inc. 2003
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