Defining A Test Setup - Ametek Davenport PET Plus User Manual

5.4 DEFINING A TEST SETUP

Display the "Select Test" screen.
Press the key under > or < to select the test set-up that is to be defined then press the key under
EDIT to display the edit test screen.
Press the key under SETUP to display the first "Set-up" screen.
The test temperature is generally 284ºC for polymers having an IV below 0.7 and 295ºC for polymers
having an IV above 0.7 IV.
To change the test temperature, press the key under SET TEMP then enter the required temperature
(in degrees C).
The die length (cm) and die diameter (cm) are shown on the die certificate and this should be referred
to for this information.
To change a die dimension, press the key under DIE LENGTH or DIE DIAMETER then enter the
required values (in cm).
This screen is used to define the pass/fail feature. At the end of every test, the result screen will
display the calculated IV and can also display the pass/fail status.
If a pass/fail indication is not required, then the Upper IV and Lower IV should be set to zero. If a
pass/fail indication is required, then one or both of the IV values should be defined.
Note that if only the Lower IV is specified then the sample is considered to have passed if the
calculated IV is above the Lower IV and no Upper IV is required.
Also note that if only the Upper IV is specified then the sample is considered to have passed if the
calculated IV is below the Upper IV and no Lower IV is required.
36 PET Plus User Manual