F7
Vacuum Gauge Controller
Scientific Instrument Services, Inc.
TM
FAX: 908-806-6631
www.sisweb.com/catalog/08/F7
G
ranville-Phillips 340 Vacuum Gauge Controller (VGC)
measures pressure from less than 1 x 10
-9
Torr to
atmosphere, utilizing an ionization gauge and two
Convectron gauges. Pressure from each gauge is indicated
independently on three front panel digital displays and by rear
panel analog outputs. Resistance heating degas of the ionization
gauge is standard.
Infrequently used controls are housed behind a hinged front
panel to reduce front panel clutter. The 3 1/2" high controller is
available as a compact 8" wide bench mount unit.
Excellent efficiency of the integral power supply and low
internal power consumption allows the 340 to run cool without
requiring ventilation openings in its aluminum enclosure. This
helps avoid failures that can be induced by heat or foreign mate-
rials.
Granville-Phillips Vacuum Gauge Controller for Versatile, Accurate Pressure
Measurement
*This is controller only. Purchase cables and tubes separately.
Part No.
Description
Model 340 Vac. Gauge Controller
10' Cable, Ionization
10' Dual Convectron Cable
Kovar 3/4" Ion Gauge Tube
Pyrex Ion Gauge Tube
1/8" NPT Convectron Tube
NW25 Convectron Tube
-
Uses one Bayard-Alpert Ion Gauge tube and two
Convectron Gauge Tubes
-
Resistance heating degas
-
Convenient bench top design
-
Three independent digital LED readouts
Improved Long-Term Accuracy
L
ong-term accuracy of pressure measurement is
essential in vacuum processing to achieve maximum
throughput. Conventional IG Systems will typically
provide pressure indications that are uncertain by 30 to 40% at
mid-range and by several hundred percent at higher pressures
when new. Even accurate calibration does nothing to improve the
accuracy of readout on non STABIL-ION Systems. With these
older systems, you must use lookup tables to get accurate
information and, with use, the calibration typically changes
resulting in unavoidable errors. Only STABIL-ION Systems can
automatically correct for the inherent nonlinearity in sensitivity in
all Bayard-Alpert type gauges. Compare the 2, 3, or 6%
uncertainty of readout at mid-range of STABIL-ION Systems
(depending on the system ordered) with the approximately 10
times larger uncertainty of older systems and you will choose
STABIL-ION Systems.
Reliability is Designed In
With STABIL-ION Gauges, there is no glass breakage, glass
decomposition, or helium permeation. Conventional nude
ionization gauges also have no glass envelopes; however, the lack
of a fixed metal envelope and shields around the electrodes
means that any change on the position or potential of any surface
in the vicinity of the nude gauge affects its accuracy.
GPC uses a proprietary filament coating process with greatly
improved adhesion and uniformity of coating for longer cathode
life. A number of pre-production STABIL-ION Gauges have been
operating continuously for over 42 months.
partial end
caps on
anode
self-aligning
lock-on
connector
feedthrough
insulator shield
precision-wound
stress-relieved anode
port shield
tensioned
filaments
guard
STABIL-ION
®
VACUUM MEASUREMENT SYSTEM
Highest Long-Term Accuracy Vacuum Gauge from Granville Phillips
Specifications
Display
3 independent LED digital
Pressure Range
1000 to 1 x 10
-9
Torr
using both ion gauge
and Convectron Gauge Tubes
Emission Current
Controlled, Adjustable
0.01-10.0 mA
Degas
I2R: 8V, 10A max.
Weight
11.0 lbs
Dimensions
9.0" wide x 3.0" high x 11" deep.
Ordering Information
The STABIL-ION System from SIS includes the following com-
ponents and parts.
1. STABIL-ION Controller (#360102) rack mounted controller
with remote power supply.
2. STABIL-ION Gauge with CF flange mount (#360120)
3. 10 ft. STABIL-ION Cable (#360113)
The system is calibrated for output in Torr and wired for 120
VAC, 60Hz, USA type plug.
rugged stainless
steel enclosure
Part No.
Description
STABIL-ION System,
includes STABIL-ION Gauge
STABIL-ION Gauge
tip...
