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Thermo Scientific 42iQHL Instruction Manual page 47

High level no-no2-nox analyzer

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Thermo Scientific
Schedule Averaging Time: Allows the user to adjust the zero/span
schedule averaging time. This averaging time only affects the zero/span
schedule.
Background Calibration: Toggles Enabled/Disabled. If enabled,
background value is calibrated. If disabled, schedule runs a background
check only and background value is not updated.
Span Calibration: Toggles Enabled/Disabled. If enabled, span
coefficient is calibrated. If disabled, schedule runs a calibration check
only and span coefficient is not updated.
Zero : Span Ratio: Allows the user to perform more scheduled
background calibration checks to span calibration checks. Default is 1
and therefore reads 1:1. (This means that each time the schedule is run,
both the zero duration and span duration occurs.) The zero/span ratio
is allowable between 1 to 99. If 99 is chosen, the schedule should only
perform the Span on the 99th iteration.
Operation
Calibration
42iQHL Instruction Manual
3-19

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