INFICON Explorer Portable Gas Chromatograph - Manual (Page 175)

Explorer Operator Manual
173
ECD Temperature
The ECD temperature can be set independently of the column and the PID. The
ECD must be maintained at a temperature greater than or equal to the column/PID
temperature.
NOTE: Do not set the ECD temperature less than the column temperature. It is possible the
sample could condense and contaminate the radioactive foil contained in the ECD.
To set the ECD temperature:
1. Select the Assay tab.
2. In the Method box, click Config .
3. Enter the desired ECD Oven temperature.
4. Click OK to accept the changes and close the dialog boxes.
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 injection volume.
5. Save the assay.
NOTE: If you have entered different ECD temperatures for each column method, Explorer
will require 30 minutes between analyses for the ECD to reach temperature
equilibrium.
Pressure
When adjusting the carrier gas flow rates ensure the flow through the detector is
maintained at a constant rate. Variations in the detector flow will result in baseline
instability, especially with high sensitivity applications. After you change the
pressure, allow a few minutes for the flow through the columns to stabilize. You can
set the pressure to any value between 8 and 14 psi.
To set the column pressure:
1. Select the Assay tab.