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Section 6
Figure 33 Best-fit Straight-line Representation using Only Non-zero Points
100%
80%
60%
40%
20%
(0, y )
1
0
0
Page 104
Calibration Menu
(x , y )
4
(x , y )
3
3
(x , y )
2
2
40%
20%
Multi-point add
M ul ti pt a d d
For a point to be added to a multi-point calibration, the TOC standard must
be specified and a calibration performed with this standard to get the
corresponding CO
calibration, except that the display returns to the edit mg/L screen. This way,
after the initial point has been added, subsequent points may be entered. A
new TOC value must not duplicate an existing entry and be at least 10%
different from an existing entry. Points may be entered in any order. Following
a successful calibration of a point, the entry is added to the calibration set and
ordered from low to high.
Multi-point delete
M ul ti pt d e le t e
A calibration point in the multi-point calibration set may be deleted. This is
useful if the calibration point is bad or no longer required and the user does
not wish to update the calibration point. Passcode entry is required to prevent
inadvertent deletion, see
the last two points in the set or the zero point as a zero and span must always
be retained.
(x , y )
6
6
(x , y )
5
5
4
60%
80%
100%
TOC µg/L or mg/L
gas concentration. This procedure is similar to a manual
2
Section 6.8.1 on page
95. It is not possible to delete
UVTOCOperation.fm
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