Teledyne 4020 - Hydrocarbon analyzer - Manual (Page 57)

Total Hydrocarbon Analyzer Operation
Teledyne Analytical Instruments 41
<Enter> Press again to move to the next screen. As an
example, in the case of an AUTOZERO, the arrow
should now point to the line of text: Zero in 7 days as
shown below.
If you are setting a span calibration event press the <▼>
key twice more and enable the AUTOSPAN function.
Then press the <▼> key once more to bring the arrow to
point to the line of text: Span in 7 days.
With the arrow adjacent to the text: Zero in 7 days, (or
Span in 7 days)y if you want to change the day count,
highlight the number by pressing .
<▲▼> With the number highlighted, use the <▲▼> keys until
the proper day count value is on screen.
<Enter> Press . This accepts the value and moves the
arrow to the next screen line.
Note: You can always press <Escape> to move to the previous
screen line. Repeated Escaping will bring you back to the
MAIN MENU. Pressing <Escape> at the MAIN MENU will
place the instrument in Analysis Mode.
To have a zero (or span) event occur in an hourly time frame is
similar to the above procedures except that you must scroll from the
MAIN MENU using the <▼> key until the appropriate line is reached.
Figure 4-4 shows the set of screens used in the AUTOCAL function.