Multipoint Calibration - Thermo Scientific 48iQ Instruction Manual

Operation
Calibration

Multipoint Calibration

3-24 48iQ Instruction Manual
The Multipoint Calibration screen is used to calibrate the instrument using
up to three gas concentrations (cal points) for each range. It is suggested to
use three cal-points, as this will give the most accurate readings over the
entire range.
The following screen is shown in single range mode. In dual or auto range
modes, "High Range" or "Low Range" is displayed to indicate the
calibration of the high or low coefficients. The High Range Multipoint
Calibration and Low Range Multipoint Calibration screens function the
same way.
Note Pressing the Multipoint Calibration button responds with "It is
recommended to calibrate all three points" and requires an OK action.
Home Screen>Calibration>Advanced Calibration>Multipoint
Calibration (single range mode)
The Multipoint Calibration screen contains the following information:
Point 1: First cal point used in the calibrated multipoint polynomial
●
curve.
Point 2: Second cal point used in the calibrated multipoint polynomial
●
curve.
Point 3: Third cal point used in the calibrated multipoint polynomial
●
curve.
First Coefficient: Read only. Value of the first coefficient in the
●
polynomial curve.
Second Coefficient: Read only. Value of the second coefficient in the
●
polynomial curve.
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