Temperature Calibration - PerkinElmer TGA 4000 Installation And Hardware Manual

8. Click the Begin Calibration button.
A message stating that the system defaults will be used for all temperature calibrations
if you perform a furnace calibration is displayed. If you wish to continue, click OK. The
Furnace calibration begins immediately. The Furnace Calibration dialog box is displayed
showing the approximate time remaining in the calibration.
You can stop the calibration, which takes about an hour, by clicking the Stop
Calibration button.
9. When the calibration routine is finished, click the Save and Apply button in the
Calibration window to send the new calibration values to the analyzer and save the
calibration file.
10. Select the Temperature Calibration tab or the Close button to close the Calibration
window and begin using the new calibration values.

Temperature Calibration

NOTE: You must perform a Furnace calibration before a Temperature calibration.
To calibrate the temperature of the TGA 4000, perform the following steps:
1. While in Instrument Viewer or Method Editor, select Calibrate from the View menu.
The Calibration window is displayed.
2. Restore the default temperature calibration by selecting Temperature from the Restore
menu (this step is optional).
3. Click the Save and Apply button in the Calibration window to send the default values
to the analyzer and save the current calibration file. The Save As dialog box appears.
Select OK to save the default file.
4. Click Close to close the Calibration window.
The TGA 4000 is calibrated by performing two runs each using two or three of the magnetic
standards provided: alumel, nickel, and iron. These are supplied with the instrument. The
runs should use the same conditions under which you would run your samples. This
temperature calibration uses the Curie transition of the materials, that is, the point at which
the magnetic properties disappear.
The first run of each reference material should use the lower scanning rate (for example,
5 °C/min) and the second run the higher scanning rate (for example, 50 °C/min). You must
run at least two reference materials but you can use all three if desired. Therefore, you will
do from four to six runs in order to perform a temperature calibration.
After you have completed the steps above, go on to the following steps to complete the
temperature calibration:
5. From the Method Editor, select Open Method from the File menu and double-click
Alumel.t6m, Nickel.t6m, or Iron.t6m, depending on the sample you are going to run.
6. Place an empty sample pan on the sample holder that is already in place in the furnace.
7. Place the furnace lid back on the analyzer.
Install a TGA 4000 . 51