yellow jacket 40870, Руководство пользователя

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measurement is plotted. The line graph fully overwrites the old data every 200 seconds (approx.
3.5 minutes) and will begin again from the left side of the graph.
Operating the Pressure Rise Test:
The pressure rise test can be accessed through
completion of an evacuation (See page 13). Once
the evacuation has been completed, the device
prompts the user to conduct a pressure hold test.
If the button is selected, the user will be brought
to the pressure rise test setup screen shown in
Figure 27. The pressure rise setup screen allows
the user to adjust the allowable vacuum pressure
(allowable change) and test duration.
Allowable change sets the maximum allowable system vacuum pressure above which the P51-
870 TITAN® will indicate a failure. Tap and drag the slider bar to adjust the allowable vacuum
pressure until the desired value is displayed. The test duration sets the length of time the
pressure rise test will be conducted. If the system vacuum pressure has not risen above the limit
pressure within the test duration, the P51-870 TITAN® deems the pressure rise test a pass. Tap
the + and – buttons to adjust the test duration value. When all desired settings have been set,
select the continue button to advance to the pressure rise test. The back button can be used to
return to the previous evacuation screen.
After selecting the continue button, the pressure rise test commences immediately setting the
current vacuum pressure as the initial system pressure. During the pressure rise test, current
system vacuum pressure (Pvac) will be monitored and compared to the limit pressure (Set by
allowable change). The session timer will continue to increment from the previous evacuation
through the pressure rise test. The percent change per minute (%/min) will display the change in
system vacuum pressure every minute. A large %/min value indicates a rapid change in pressure,
conversely small value indicates a small fluctuation in vacuum pressure. The test duration timer
will continue to deplete until the pressure rise test is complete.
If Pvac rises above the limit pressure within the time limit set by test duration, the device will
indicate a “FAIL” and the buzzer will sound (Figure 28). To silence the buzzer, exit the pressure
rise test by selecting the modes menu button. If test duration timer fully depletes before Pvac
rises above the limit pressure, the device will indicate a “PASS” and the buzzer will sound to
indicate the test is complete (Figure 29).
Figure 27: Pressure Rise Setup Menu