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Calibration
Calibration
Initial S/R
The Initial S/R (Sample/Reference Ratio) is determined at the factory and
should only be adjusted by a qualified technician. The Initial S/R is used to
correct for the slight variations found from one correlation wheel to
another. The only time the Initial S/ R ratio should be changed is when the
correlation wheel is replaced. Zero Air should be sampled when calibrating
the Initial S/R. There are two ways of calibrating the Initial S/R. The user
can manually change the Initial S/R by clicking on the first cell below the
Initial S/R description. The user will be brought to a keypad screen where a
new value can be entered.
However, it is suggested to run an Auto Calibration for the Initial S/R.
This is done by pressing on the cell labeled Start located in the Initial S/R
column. Allow up to 5 minutes for the Initial S/R to be calibrated. The
user can Stop the calibration at any time by pressing the Stop button
located in the Initial S/R column.
The user can set the Initial S/R to factory defaults by pressing on the cell
labeled Default S/R located in the Initial S/R column.
Home Screen>Settings>Measurement Settings>Advanced Measurement
Settings>Optical Bench Settings>Continue To Initial S/R Calibration
Thermo Scientific
48iQ Instruction Manual
4-5
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