Teledyne GC-Pro/TCD - Gas Chromatograph - Manual (Page 79)

GC-Pro TCD Operation
Teledyne Analytical Instruments 65
Use the same procedure for performing an Alt Span on any member
or members in Groups 5-9.
4.5.10.3 A UTO CAL
The GC-Pro TCD Analyzer can be fitted with an external auto
calibration module as an option. This feature provides automatic
switching of sample and calibration gases and allows the operator to
program calibration events to occur automatically
Note: If your instrument is not fitted with an auto calibration
module, the auto calibration screens will still appear on the
display but will be non-functional.
Note: Before setting up an AUTO CALIBRATION, be sure you
understand the Span function as described in Section
4.5.10.1 and follow the procedures given there for inputting
the calibration gas compositions for each group etc. Auto
Span performs a span calibration using the target span
value set that has been set in the Span feature menu.
To setup an auto calibration cycle for a span events to occur in a
certain number of days/hours select the “Auto Cal” button from the
Calibration screen. The Auto Cal screen is displayed.
A dark green color of the LED button adjacent to the Auto Span
indicates that Auto Span is disabled while a bright green color means
that the Auto Cal feature is enabled.