MKS Granville-Phillips 358 series, Instruction Manual

Page: 96 / 122

Chapter 6
96
Series 358 Micro-Ion Controller Instruction Manual - 358013 - Rev. B
Figure 6-2 Controller Front Panel
3. If you have Convectron Gauge capability installed and have prepared
your system for automatic operation of the Micro-Ion Gauge per
Micro-Ion Gauge Auto ON/OFF on page 80, the Micro-Ion Gauge will
turn ON and OFF automatically.
4. For manual operation, press the front panel GAUGE momentary rocker
switch. See Figure 6-2. The pressure in the Micro-Ion gauge will be
displayed on the Micro-Ion gauge line of the display in the chosen
pressure units.
5. To degas the Micro-Ion Gauge (the gauge must be ON and the pressure
within the Micro-Ion Gauge must be below 5 x 10
–5
Torr), depress the
DEGAS momentary rocker switch on the Controller.
6. When the filament is nearing the end of its useful lifetime or is badly
contaminated, the LED indicator next to the DEGAS switch on the front
panel will blink during degassing. This is an indication that the filament
emission properties have deteriorated. This may be due to
contamination which has temporarily “poisoned” the filament coating,
or to long term permanent erosion of the coating.
If this condition does not disappear after a few days of operation at
clean high vacuum or UHV, it is an indication that the filament is
approaching its end of life.
IG
7.5 – 6
A
B
6.4 – 2
3.2 + 2
1
DEGAS
-
2
-
3
-
O N
O F F
GAUGE
O N
O F F
358 Micro-Ion Controller
4
-
5
-
6
-
TORR