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Chapter 5
84
Series 358 Micro-Ion Controller Instruction Manual - 358013 - Rev. B
equation instead of –4, i.e., P = 10
(–7+3)
. Furthermore for the same offset, if
the pressure were, say, 1 x 10
–2
Torr, then the output voltage would be –5 V.
The pressure would be calculated as P = 10
(–5+3)
.
5.11
Preparing for Capacitance
Manometer Operation
The capacitance manometer pressure is read in the third display line of the
358 Controller. The accompanying Convectron gauge is read in the second
display line. If the cable is disconnected, the capacitance manometer will
read Zero pressure.
Connecting a Capacitance Manometer
on page 60 for additional
information regarding intial installation and setup and adjustments of the
capacitance manometer module.
Figure 5-15 Convectron/Capacitance Manometer Module Panel
Use the IG AUTO potentiometer to set the auto turn ON pressure for the
Micro-Ion Gauge. The IG AUTO turn-on potentiometer is marked with
rough pressure calibration markings. To set the pressure at which the
Micro-Ion Gauge will turn ON with falling pressure, and OFF with rising
pressure, simply adjust the potentiometer to point to the desired pressure.
More precise control can be achieved by fixing the system pressure at the
desired auto turn-on pressure, and adjusting the potentiometer slowly until
the gauge comes ON.
To disable the auto turn on function, adjust the auto turn-on potentiometer
completely counter-clockwise (OFF).
Содержание Granville-Phillips 358 series
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