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Seriies 400 Hornet? Hot Cathode Bayard--Allpert Miiniiature--IIoniizatiion Vacuum Gauge0 pages
InstruTech®, Inc.
Series 400 Hornet™ Hot Cathode Bayard-Alpert Miniature-Ionization Vacuum Gauge
Wide measurement range
-9
-2
1 x 10 to 5 x 10 Torr
-9
-2
1.3 x 10 to 6.7 x 10 mbar
-7
1.3 x 10 to 6.7 Pa
Full range measurement from
-9
1 x 10 Torr to atmosphere when
used with the B-RAX or the FlexRax
controllers and a convection gauge
Ionization gauge designed specifically
for use with InstruTech’s B-RAX or
FlexRax vacuum gauge controllers
Dual hot filament design, rugged
and compact metal construction
Significant cost savings compared to
other vacuum gauge measurement
systems
Built-in Electrometer results in
significant controller and cabling
cost reduction
Description
The IGM400 Hornet™ is a hot cathode ionization gauge
module specifically designed for use with InstruTech’s
B-RAX™ or FlexRax™ vacuum gauge controllers.
All display and control functions are performed remotely
by the B-RAX or the FlexRax controller.
The InstruTech IGM400 Hornet Ionization Gauge
The IGM400 Hornet ionization vacuum gauge module
(IGM) provides the basic signal conditioning required to
turn the gauge into a complete measuring instrument.
InstruTech continuously strives to enhance the design,
reduce cost and improve the performance and reliability
of the Hornet IGM. The electrometer circuit auto zeroes
to ensure that the readings are not subject to
temperature drift, eliminating the need for unnecessary
and expensive circuitry which further reduces the cost.
The IGM400 Hornet is functional only when used with
the B-RAX or the FlexRax vacuum gauge controller. This
allows the user to remotely operate the IGM400 Hornet
from the B-RAX or the FlexRax controller.
All operations including filament on/off, degas, and
change of emission current is controlled from the B-RAX
or the FlexRax.
The emission current can be set to automatically switch
between 4 mA and 100 µA. This results in optimal and stabile
pressure readings over the entire measurement range from
low to high vacuum.
The IGM400 Hornet 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.
