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KJLC® 351 Series Hot Cathode Bayard-Alpert Miniature-Ionization Vacuum Gauge

When used with KJLC's multigauge controllers, the KJLC351 ionization vacuum gauge module provides the basic signal conditioning required to turn the gauge into a complete measuring instrument.

KJLC continuously strives to enhance the design, reduce cost and improve the performance and reliability of the KJLC351. The electrometer circuit auto zeros to ensure that the readings are not subject to temperature drift, eliminating the need for unnecessary, expensive circuitry which further reduces the cost.

All operations including filament on/off, degas, and change of emission current is controlled from the MGC.

The emission current can be set to automatically switch between 4 mA and 100 µA. This results in optimal and stable pressure readings over the KJLC351's measurement range, 1.0 x 10-9 to 5 x 10-2 Torr

The KJLC351 gauge tube assembly is constructed of a compact all metal design with dual yttria coated Iridium or optional dual tungsten filaments.

For general vacuum applications, dual yttria coated filaments are offered for use with air and inert gases such as N2, argon, etc. Dual tungsten filaments are available for use with gases that may not be compatible with yttria coated filaments.

The gauge sensor assembly can be easily replaced in the field.

  • Wide measurement range
    1.0 x 10-9 to 5 x 10-2 Torr
    1.3 x 10-9 to 6.7 x 10-2 mbar
    1.3 x 10-7 to 6.7 Pa
  • Ionization gauge designed specifically for use with KJLC's Multi-gauge Controller (MGC)
  • Significant cost savings compared to other vacuum gauge measurement systems
  • Full range measurement from 1 x 10-9 Torr to atmosphere when used with the KJLC Multi-gauge Controller (MGC) and a convection gauge
  • Dual hot filament design, rugged and compact metal construction
  • Built-in Electrometer results in significant controller and cabling cost reduction
  • Interconnect cable sold separately.

Specifications Table

Model 351
Technology Hot Filament Ion Gauge
Measurements Torr
Min: 1.000 x 10-9
Max: 6.665 x 10-2

mbar
Min: 1.333 x 10-9
Max: 6.665 x 10-2

Temperature Bakeout
200 ºC
392 ºF

Operating
Min: 0.00 ºC
Max: 40.0 ºC
Min: 32.0 ºF
Max: 104 ºF

Storage
Min: -40.00 ºC
Max: 70.0 ºC
Min: -40.00 ºF
Max: 158 ºF

Materials Exposed to Vacuum 316/304 Stainless Steel
Glass
Nickel
Tantalum
Tungsten
Yttria-Coated Iridium or Optional Tungsten Filaments
Connectors 9 pin Sub D Male
Typical Accuracy
±15% of reading (1.00 x 10-8

to 5.00 x 10-2

Torr)
Analog Output
Log linear 0 to 9 VDC
1 V/decade
Recommended
Mounting Orientation
Any
Input Power
Powered by MGC 3200
Communications
(standard)
Analog
RS485
Compliance
and Standards
CE
RoHS
De-Gas
(EB)
3W
Electron Bombardment
Filament Count
2
Filament Type
Yttria-Coated Iridium
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Product Downloads
Product Downloads
Below is a list of available file downloads for this product.
KJLC 351 Series Datasheet
KJLC 351 Series Manual
Gauges FAQ
Click here for answers to some of the most common questions we are asked.
Contact Us
Contact Us
To contact someone directly, please click here, or call +1 412 387 9200 to get in contact with your dedicated sales team.
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Ordering Table

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Description Technology Connector Type Flange
VacuCADSM
Part Number Price In Stock Add To Cart Accessories
Description Technology Connector Type Flange
VacuCADSM
Part Number Price In Stock Add To Cart Accessories
GAUGE, HOT IONIZATION, DUAL YTTRIA FILAMENT, QF16 FLANGE, FOR USE WITH VGC CONTROLLER ONLY, NO DISPLAY OR INTERFACE INTERCONNECT CABLE SOLD SEPERATELY Hot Filament Ion Gauge 9 pin Sub D Male KF16
(please log in)
KJLC351400YB
P.O.R. Call for Availability
GAUGE, HOT IONIZATION, DUAL YTTRIA FILAMENT, QF25 FLANGE, FOR USE WITH VGC CONTROLLER ONLY, NO DISPLAY OR INTERFACE INTERCONNECT CABLE SOLD SEPERATELY Hot Filament Ion Gauge 9 pin Sub D Male KF25
(please log in)
KJLC351400YC
P.O.R. Call for Availability
GAUGE, HOT IONIZATION, DUAL YTTRIA FILAMENT, QF40 FLANGE, FOR USE WITH VGC CONTROLLER ONLY, NO DISPLAY OR INTERFACE INTERCONNECT CABLE SOLD SEPERATELY Hot Filament Ion Gauge 9 pin Sub D Male KF40
(please log in)
KJLC351400YD
P.O.R. Call for Availability
GAUGE, HOT IONIZATION, DUAL YTTRIA FILAMENT, 1.33" CF FLANGE,FOR USE WITH VGC CONTROLLER ONLY, NO DISPLAY OR INTERFACE INTERCONNECT CABLE SOLD SEPERATELY Hot Filament Ion Gauge 9 pin Sub D Male DN16CF
(please log in)
KJLC351400YE
P.O.R. Call for Availability
GAUGE, HOT IONIZATION, DUAL YTTRIA FILAMENT, 2.75"CF FLANGE, FOR USE WITH VGC CONTROLLER ONLY, NO DISPLAY OR INTERFACE INTERCONNECT CABLE SOLD SEPERATELY Hot Filament Ion Gauge 9 pin Sub D Male DN35CF-DN40CF
(please log in)
KJLC351400YF
P.O.R. Call for Availability
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Contact Us - KJLC® 351 Series Hot Cathode Bayard-Alpert Miniature-Ionization Vacuum Gauge