INFICON Explorer Portable Gas Chromatograph - Manual (Page 174)

Method Development
172
Oven Temperature
In isothermal operation the columns and the PID are maintained at a fixed
temperature. Retention time drift is virtually eliminated and faster analysis results
are obtained with less frequent calibration.
The smaller the difference between ambient temperature and instrument operating
temperature of the column, the quicker the column will reach thermal equilibrium
and the lower the power consumption will be. However, if a temperature difference
is too small, the ambient temperature may increase above that of the column and the
column will no longer be under isothermal control. An Oven Temp fault will be
displayed.
You can set the temperature to between 0 and 80 C. Set the temperature to 0 to turn
the oven off.
NOTE: Do not set the temperature to below 50 C, as samples may condense on the column
and contaminate your system.
To set the oven temperature:
1. Select the Assay tab.
2. In the Method box, click Config .
3. Enter the desired Oven temperature.
4. Click OK to accept the changes and close the dialog box.
The change you have made applies to the currently selected column only. If
you need to change the setting for another column, select the next column and
change the temperature.
5. Save the assay.
NOTE: If you have entered different temperatures for each column, Explorer will require
30 minutes between analyses for the column to reach temperature equilibrium.