7 300781309_002_C0 - 01/2019 - © Leybold
Part name and component function
2 Part name and component function
2.1 Operation switches and LEDs
Item Description
1 Analyzer tube connector For connection to the analyzer tube.
2 Measurement value/fault display Shows measured partial pressure value. For faults, displays the error code.
3 Gas species/total pressure
display LED
Displays the gas species and total pressure being measured.
4
POWER POWER LED (green) comes on when power is applied.
SEM Secondary Electron Multiplier (SEM) LED (green) comes on when SEM is used.
ERROR ERROR LED (red) comes on if a fault occurs.
5 Gas species/total pressure
selection button (CH)
Select the gas species you want to measure or total pressure. The orange LED
shows the current selection.
6 Measurement start button
(START)
Starts measurement. The upper orange LED indicates that measurement has
started.
7 Measurement value units display
LED
The unit of measured partial pressure. For O2/N2 the display shows a
percentage (%).