Series 401 Hornet? Hot Cathode Bayard-Alpert Miniature-Ionization Vacuum Gauge0 pages

InstruTech®, Inc.
Series 401 Hornet™ Hot Cathode Bayard-Alpert Miniature-Ionization Vacuum Gauge
Wide measurement range
1 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

Dual hot cathode design,
rugged and compact metal
construction

Built-in digital display, set-point relay,
log-linear analog output and RS485
serial communication, are all
standard features of the Hornet™

Bright digital OLED graphical display
allows for wide angle, greater
viewing distance

Also a lower cost, direct drop-in plugcompatible replacement for the
Granville-Phillips® Micro-Ion®
module

Significant cost savings for you use your existing control hardware,
cables and software when replacing
Micro-Ion® without need to change
your vacuum system control

IGM401 sensor

IGM401 Built-in Controller & Display

The IGM401 Hornet ionization gauge sensor assembly is
a compact, all metal design with either dual yttria coated
iridium or tungsten filaments available.

The IGM401 Hornet ionization vacuum gauge module (IGM) provides
the basic signal conditioning required to turn the gauge into a
complete measuring instrument. The built-in controller is offered
with an easy to read, bright OLED display providing full
programmability and a convenient user interface for setup and
operation of the vacuum gauge.

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.

Emission current can be set to automatically switch between 100 µA
and 4 mA. This results in optimal and stabile pressure readings over
the entire measurement range from low to high vacuum.

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

Lower cost without sacrificing quality or functionality
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, expensive
circuitry which further reduces the cost.

Filament voltage and current, emission current and ion current can
be monitored in real time using the research mode display
screen. Sensitivity and degas time maybe adjusted by the user.

Service screens allow monitoring of filament operation.
Error messages are displayed for several common fault
conditions.

The Hornet operating system enables the user to select from 16
commonly used gases eliminating the need to manually apply
correction factors to the displayed pressure reading.

A programmable setpoint relay can also be toggled manually to allow
testing for correct external system control wiring.

Also a direct drop-in plug-compatible replacement for the Micro-Ion®
The IGM401 Hornet module will also directly replace
various
Granville-Phillips®
Micro-Ion®
products.
Measurement performance throughout the range of
1 x 10-9 to 5 x 10-2 Torr is equal to or better than similar
vacuum gauge products in the marketplace.

An analog output voltage signal proportional to displayed pressure,
one setpoint relay and RS485 serial communication are all included
in the IGM401. All control functions are identical to corresponding
Micro-Ion® functions including software commands when using the
RS485 serial interface.