Temperature Calibration - Ametek Davenport PET Plus User Manual

15.2 TEMPERATURE CALIBRATION

Note that an accurate reference thermometer is required for this procedure.
The barrel temperature is calibrated by measuring the actual temperature and entering this value into
the system.
Press the key under CAL TEMP to display the "Temperature Calibration" screen.
Press the key under SET TEMP then enter 300ºC. This is the recommended calibration temperature.
Fit the die to the bottom of the barrel then insert approx. 2 grams of PET.
NoTE: Use Polythene instead of PET if using a mercury in glass thermometer. PET will
break a glass thermometer when it cools and contracts.
Insert the reference thermometer into the melt.
Allow the barrel temperature to stabilise (approx 5 minutes) as shown by the "measured temperature"
display.
Measure the actual barrel temperature using the reference thermometer and compare with the
requested temperature of 300ºC.
If the actual temperature is not 300ºC +0.1ºC, press the key under CAL POINT to display the "cal
point" screen.
82 PET Plus User Manual