Ion Science SF6 P1:p - Manual (Page 13)

SF6 P1:p MANUAL Ion Science Ltd
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Operation modes
The P1:p leak detectors offer two different measurement operating modes which are explained in the
following.
The user himself may define the mode which will be enabled when switching the instrument on. During
operation it is possible to change between the modes at any time by pressing the green SQUARE button for
a longer
time until the red LED “Not READY” on the handset lights up again.
Search Mode
In the Search Mode, the instrument operates with the greatest possible sensitivity. However, there is no
quantitative display of leaks. Instead, each leak which is found
results in a full scale response of the analogue gauge in the
handset as well as a corresponding audible alarm. For
approximately estimating and locating the leak, there is a bar
display on the screen. The advantage of the Search Mode is the
fact that even small leaks or leaks not completely determined are
not easily "overlooked“. Moreover, by dispensing with a
quantitative readout, sensitivity is, compared to the
Measurement Mode even slightly higher.
The Search Mode is indicated on the bar display of the screen
as well by flashing of the “READY" lamp on the handset.
Measuring Mode
In the Measuring Mode, the leak rate is indicated on the screen
using large digits. The gauge on the handset indicates the
measured leak rate in percent of the limit. Therefore a leak which
is as great as the selected limit will give a readout of 100%. In
the Measuring Mode, the green “READY” lamp will be on
constantly. In this operating mode, it is possible through the
“User Setup” to select and indicate the required unit of
measurement (cc/s, g/a, ppm).