INFICON Protec P3000(XL) Helium Leak Detector - Manual (Page 62)

4-7
Equipment Settings
k
in
a
26
e Ch
ap
te
r
4
.fm
Tech
ni
ca
l Ha
nd
bo
ok
(1
20
9)
Display limit
The lower display limit for each gas can be edited. To change the lower display limit
go to the “
DISPLAY LIMIT ” line item in the “ EDIT GAS ” submenu and press “EDIT”. The
lower display limit can be increased in factors of the lowest display limit. In the line
below the factor the absolute lower display limit in the currently chosen unit of
measurement is stated. Available factors are 1, 2, 5, 10, 20, 50, 100.
For the Protec P3000XL the lowest display limit of 1x10
-6
mbar l/s equals factor 1.
The equivalent absolute lower display limits at other factors are the lower display limit
in
LOW FLOW mode mulitplied by a factor of 10.
Notice For Protec P3000XL only:
When switching from LOW FLOW to HIGH FLOW (or vice versa) the lower
display limit factor will remain unchanged, i.e. if the lower display limit factor
is set to 2, the lower display limit will be adopted from 2x10
-7
mbar l/s to
1x10
-6
mbar l/s automatically when switching from LOW FLOW to HIGH FLOW .
Default value: 2
Search level
An additional warning level can be entered as percentage of the trigger level. A
warning signal will be issued for leaks that are below the trigger level but above the
search level in order not to miss small leaks. The search level may be set to values
between 5 and 100%. Default value: 90%
4.3.2 Selecting a set of gas parameters
A set of gas parameters can be selected by setting the Mode in the Gas Edit menu
to “enabled”. Enabling a set of parameters will automatically disable all other three
sets of parameters so that only one set of parameters is used at the time.
Fig. 4-8 Editing the lower display limit