Figure 8: Screen message displayed when performing a Timed analysis. The test will take eight minutes to
complete.
Once the hose is correctly connected you will see the Gas Inlet Pressure Meter (see Figure
8) rise and the pressure display will indicate the gas compartment pressure. Note that
there must be a minimum pressure of 0.5bar to proceed. If the pressure is acceptable the
gauge will appear green. Press OK to continue.
A timer will appear on the screen and count down eight minutes. During this period the
SF
6
gas will flow into the analyser at a rate of 0.5L.min-1. The black ball on the electronic
flow gauge will rise and settle in the mid-point (see Figure 8). Press “Graph” to see a live
display of the readings and “Abort” to cancel the test.
If at any time during the test, large amounts of toxic gases are detected and “Auto Abort” is
enabled then the test will stop mid-way with an advisory warning.
When the test is completed the results of the analysis will display on the screen and the
printer will produce a short summary report. If pump back is set to “Auto” the unit will
immediately begin pumping the gas back to the compartment.
5.5
Results and Finishing
With the test completed and all the gas pumped back the analyser storage bag will be
empty and the machine is ready for the next test. If multiple tests were selected, then the
cycle will repeat itself until everything is completed. Finally, the screen will indicate to the
user that it is safe to disconnect the hose from the gas compartment and then from the
Rapidox before moving on to the next location.
Note that if a sequence of repeated tests is performed it is not usually necessary to do a line
purge each time, as the hose is full of dry SF
6
from the previous test.
Storage bag is
empty
Sample gas is
flowing
Содержание Rapidox SF6 6100
Страница 16: ...Figure 9 Operational Flow Chart ...