Series 360, Granville-Phillips, Stabil-Ion, Ionization, Vacuum ...
Series 360, Granville-Phillips, Stabil-Ion, Ionization, Vacuum ...
Series 360, Granville-Phillips, Stabil-Ion, Ionization, Vacuum ...
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4 Preparing the <strong>Stabil</strong>-<strong>Ion</strong> System for Operation<br />
4.5 <strong>Stabil</strong>-<strong>Ion</strong> Gauge Analog Output Signal<br />
A signal voltage proportional to the logarithm of the <strong>Stabil</strong>-<strong>Ion</strong> Gauge pressure indication is<br />
provided on the back of the electrometer module via a standard 1/8 in. miniature phone jack.<br />
REMOTE<br />
OUTPUT<br />
POWER<br />
SUPPLY<br />
1 13<br />
PROCESS CONTROL<br />
C<br />
A<br />
ANALOG<br />
OUTPUT A<br />
IG1<br />
ELECTROMETER<br />
COL.<br />
ANA.<br />
OUT<br />
RS-232<br />
13 25<br />
9 1<br />
15 8<br />
GND<br />
12<br />
25<br />
X<br />
W<br />
1 9<br />
8<br />
15<br />
C<br />
G<br />
G<br />
A<br />
U<br />
G<br />
E<br />
ANALOG<br />
OUTPUT B<br />
IG2<br />
1 19<br />
R<br />
E<br />
M<br />
O<br />
T<br />
E<br />
9 26<br />
COL.<br />
MIN.ADJ.<br />
1 14<br />
Figure 4-8<br />
Normal Measurement Operation<br />
Control Unit Rear Panel Showing Location of IG Analog Output.<br />
Pressure indication, Pi =10 V-11 Torr or mbar<br />
=10 V-9 Pascal<br />
When Degassing<br />
Pressure indication, Pi =10 V-13.92 Torr or mbar<br />
=10 V-11.92 Pascal<br />
When gauge is off, V is > 10 volts<br />
This signal voltage is determined by the pressure indicated on the IG display. Thus if the scale-factor<br />
is set correctly for a given gas as specified in Section 4.1.2 on page 4-3, the equations above and<br />
curves in Figure 4-9 on page 4-11 still apply for the given gas.<br />
4-10<br />
<strong>Series</strong> <strong>360</strong> <strong>Stabil</strong>-<strong>Ion</strong> December, 2001
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