Total Duration Hour; Zero/Span/Purge Duration Minutes - Thermo Scientific 42i Instruction Manual

Total Duration Hour

Zero/Span/Purge
Duration Minutes
Zero/Span Averaging
Thermo Fisher Scientific
The Total Duration Hour line is the sum of the zero, span, and purge
duration minutes, and is for viewing only.
The Zero Duration Minutes screen defines how long zero air is sampled by
the instrument. The Span and Purge Duration Minutes screens look and
function the same way as the zero duration screen. The span duration
screen is used to set how long the span gas is sampled by the instrument.
The purge duration screen is used to set how long the purge period will be
after doing a zero or span check. This gives the instrument time to flush
out the zero and span gas before any meaningful data is taken. Logged data
is flagged as taken during a purge to show that the data is suspect.
Durations between 0 and 99 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 duration to 0 (off). The same applies
to perform just a span 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 set the zero/span
averaging time. The zero/span averaging time is used by the analyzer only
Time
when performing an automatic zero or span check or adjustment. 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.
SET TO:
 MOVE CURSOR
CHANGE VALUE
AVG DIAGS ALARM
30 MIN
31 MIN ?
 SAVE
Model 42i Instruction Manual
Operation
Calibration Menu
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