LEYBOLD LEYSPEC view Series - Front Panel Operation; Operating and Error States

31 300781172_002_C0 - 01/2019 - © Leybold
Front panel operation
7 Front panel operation
7.1 Operating and error states
MESU - 1
A press of the START button sets up the filament measurement state (FIL, RF, and
secondary electron multiplier (SEM) (if present). A second press stops
measurement.
Fig. 7.1 Front panel operation
MESU - 2
Partial pressure is shown in the display during measurement.
Pressing the CH button changes over the measurement gas species from He to
H
2
O, N
2
, O
2
, O
2
/N
2
ration (%), ANY and TP.
CAUTION:
Before pressing START, use an ion gauge or other instrument to make sure that
the pressure is within the operating pressure range. Always use under a pressure
of 1 x 10-2 Pa or less. If the pressure is higher than 1 x 10-2 Pa, the filament will
burn out and the life of secondary electron multiplier (SEM) will be extremely short
and the RF power supply will fail.