MKS HPS I-MAG 423 Series, Operation And Maintenance Manual, Page: 15 / 26

9
Cold Cathode Ionization Vacuum Sensor
HE
S
ERIES
423 I-MAG ® C
OLD
C
ATHODE
I
ONIZATION
S
ENSOR
is a smaller,
less expensive version of our Series 421 Sensor. The I-MAG ®
Sensor uses the same isolated collector design previously unique to the
Series 421 Sensor. Experimentally, the isolated collector has proven to
provide continuous pressure measurement to 10 -11 Torr.
With an output equivalent to the Series 421 Sensor, the I-MAG ®
Sensor, together with its cable, is fully compatible with all
HPS TM cold cathode sensor controllers, as well as the
MKS Type 146 vacuum sensor measurement and
control system.
Additional features include a
removable magnet,
replaceable internal
components, no elastomers or
any other high outgassing materials
in vacuum, compact size, low mass,
low internal volume, and excellent
resistance to thermal shock.
Cables for the I-MAG ® Sensor include
circuitry to protect the user from shock and to
protect the controller's sensitive electrometer against
excessive voltage.
T
About the HPS
TM
Series
423 I-MAG
®
Sensor