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Technical Information
Graphical Display Screen
The graphical display screen (see the following figure) represents the leak rate over time.
The graphing line appears in blue and changes to red when a reject set point is triggered.
Figure 26 Graphical Display
Audio Speaker
Function
Speaker Volume
Timer
Agilent Helium Leak Detector User Manual
The audio signal increases from a low to high frequency as
the leak rate increases within each decade. The pitch cycles
low to high as it passes through each decade. The audio
response corresponds directly to the size of the leak.
To turn the sound on/off, press the speaker button. The
volume level is restored to the level it was at prior to being
turned off.
Toggles the graphing time between 120 and 720 seconds.
The timer automatically defaults to 120 seconds on leak
detector start up. Press the toggle button while graphing to
clear the current graph. The data rate for the timers are:
120 seconds - two measurements/second
720 seconds - one measurement/three seconds.
As of February 2023 (Rev. LD01.06) extended the time
base from 720 seconds (12 min) to 3600 seconds
(60 min) with a 0.3 second resolution.
Tapping the graph
function symbol
toggles between the
Home and graphing
display.
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