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Operation
Calibration Menu
Zero/Span/Purge
Duration Minutes
Zero/Span Averaging
3-24
Model 42i Trace Level Instruction Manual
In the Main Menu, choose Calibration > Zero/Span Check > Period
●
Hours.
ZERO/SPAN PERIOD:
CURRENTLY:
RANGE
The Zero Duration Minutes screen defines how long zero air is sampled by
the instrument. The span and purge duration screens look and function the
same way as the zero duration screen, and are used to set how long the span
gas and sample gas are sampled by the instrument. Durations between 0
and 60 minutes are acceptable. Each time a zero/span check occurs the zero
check is done first, followed by the span check. To perform just a zero
check, set the span and purge duration screen to 0 (off). The same applies
to perform just a span or purge check.
In the Main Menu, choose Calibration > Zero/Span Check > Zero,
●
Span or Purge Duration Min.
ZERO DURATION:
CURRENTLY:
RANGE
The Zero/Span Averaging Time screen allows the user to adjust the
zero/span averaging time. The zero/span averaging time is used by the
Time
analyzer only when performing an automatic zero or span check. The
analyzer's averaging time is used for all other functions. The following
averaging times are available: 1, 2, 5, 10, 20, 30, 60, 90, 120, 180, 240,
and 300 seconds.
In the Main Menu, choose Calibration > Zero/Span Check >
●
Zero/Span Avg Sec.
024 HRS
SET TO:
025
MOVE CURSOR
CHANGE VALUE
AVG
DIAGS ALARM
SET TO:
MOVE CURSOR
CHANGE VALUE
AVG
DIAGS ALARM
HRS ?
SAVE
30 MIN
31 MIN ?
SAVE
Thermo Fisher Scientific
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Troubleshooting
