Ametek Davenport PET Plus User Manual page 47

Note that the probe speed MUST be set within the first 5 minutes after the sample was first poured
into the barrel, i.e. the speed SHOULD only be altered when the bottom line of the display shows
"Gas Off".
Note that the gas pressure must NOT be altered for the rest of the test duration.
After 5 minutes of total test time, the "IV" screen is displayed. This shows the current IV value and
this changes during the test as the sample degrades.
After 6 minutes of total test time, the "Calculated IV" screen is displayed. This shows the "estimate" of
the actual IV and this also changes during the test as the sample degrades.
The screen is updated every second during the test until the test finishes.
The test finishes 17 minutes after the sample was first inserted into the barrel. At the end of the test,
the equipment will beep then automatically turn off the gas pressure to the barrel to stop the extrusion
process.
The Calculated IV result and the degradation factor will be displayed together with the pass/fail
indication if this was specified in the relevant test set-up.
PET Plus User Manual 47