Approving a Calibration
Approving a Single-Point UDR Calibration
System Setup
IMMAGE 800 Operations Manual A11403
Page 5-108
September 2016
Approving a Single-Point UDR Calibration
The instrument status must be in
Standby
to proceed with the steps below to approve a
UDR calibration model.
The single-point UDR Calibration Result report must show at least one instrument
response (IR) for the single-point calibrator level. If not, a calibration run must be
repeated.
Step
Action
1
From the User-Defined Chemistries screen (Figure 5.28), select the UDR
chemistry and
Approve Cal [F5]
.
NOTICE
If a single-point calibration is approved with a scale factor that is not
within the range (0.6667 - 2.0), the sample run will produce no
concentration results. In this case, first rerun the single-point
calibration. If the results are the same, run a multi-point calibration.
Target instrument re/- 50% for calibration update level.
2
Select
Approve Update [F1]
to approve the scale factor. (Refer to Figure
5.52). The only curve-fit model available is the approved multi-point
calibrated curve-fit model.
Note: The letter ’U’ appears on the plot at the update level. A scale factor
is also displayed on the plot window. (Refer to Figure 5.52.)
NOTICE
After programming and saving, a single-point calibration request, the
curve-fit model cannot be changed. Each single-point calibration can
only use the model from the last approved mult-point calibration. If the
update level (letter U) does not appear on the plot window, the single-
point calibration is not reliable. Repeat the single-point calibration. If the
results are the same, perform a multi-point calibration.
3
To print a curve-fit model plot, press
[Ctrl, P]
on the keyboard.
4
Select
Print Report [F8]
to print the data and statistics for a curve-fit
model.
5
Select
UDR Main [F10]
to return to the User-Defined Chemistries screen.
6
Program controls on the UDR through Sample Programming to see if the
single-point calibration is acceptable. Another model cannot be tested.
7
When the calibration model has been approved, clear the UDR calibration
rack. Refer to "Clearing a UDR Cal Rack" in this chapter.