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Ion Gauges
Nude and glass ion gauges


Ion Gauges
  • Nude gauges
  • Glass gauges
  • Nude-UHV gauges
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.

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.

   Related Products

> IGC100 Ion Gauge Controller
> RGA Residual Gas Analyzers
> PG108 Pirani Gauge
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Datasheet
Prices

SRS Ion Gauges

To select the appropriate gauge, follow the steps below using the Model Numbers / Selection & Cross-Reference Table (next page).

  1. Select the type of gauge: glass tubulated, nude or nude-UHV (see Specifications tab)
  2. Select filament type: ThO2/Ir or tungsten, single or dual
  3. Note the SRS part number, and click on one of the Quick Links (Prices, Buy Online, Get a Quote) above

Once you have selected a gauge, choose the appropriate cable using the pin connector diagram below.

 

Bayard-Alpert Gauge Pin Connector Configuration

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
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

* These products are no longer available from SRS

 

 

 

Phone: (408)744-9040 • Fax: (408)744-9049 • email: info@thinkSRS.comwww.thinkSRS.com

Bayard-Alpert Ion Gauges
 

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 10-3Torr
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,
     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.
 
 
 
 
Phone: (408)744-9040 • Fax: (408)744-9049 • email: info@thinkSRS.comwww.thinkSRS.com