6 - 3
Transpector MPS Operating Manual
6.4 Maintenance Procedures
This section will detail the sensor’s required routine maintenance.
6.4.1 Bakeout of Quadrupole
If the symptoms in
section 7.2, Symptom-Cause-Remedy Chart, on page 7-1
suggest that the sensor is contaminated, try first to restore normal performance by
baking the sensor under a high vacuum of at least 1 x 10
-5
Torr (1.333 x 10
-5
mbar)
[1.333 x 10
-3
Pa] for several hours or preferably overnight.
represents
the maximum bakeout temperatures.
If baking the sensor doesn’t increase the sensor performance, it may be necessary
to perform the tasks described in
section 6.5.3, Filament Kit Replacement, on page
and also in
section 6.5.4, Ion Source Removal, on page 6-9
If the procedures explained above do not solve the problem, contact INFICON.
Refer to
section 1.3, How To Contact Customer Support, on page 1-3
CAUTION
When heating the sensor above 200
C, the electronics
module and the signal contact must be removed from the
sensor.
6.4.2 Spare Heating Jacket Part Numbers
INFICON offers several heating jackets to help in baking a sensor. These heating
jackets operate at a maximum temperature of 150
C.
Heating jacket part numbers are shown in
.
Table 6-1 Maximum bakeout temperatures
While
Operating
With
Electronics
Removed
Faraday Cup Sensors
200
C
300
C
Electron Multiplier
Faraday Cup
Combination
EM Mode
FC Mode
150
C
200
C
300
C
300
C