As Left Calibration - BEAMEX MC5-IS User Manual

General
points to optimize the calibration at the most important part of the
range. Note, however, that if the points are very close to each other,
the error at other points of the range may be quite big (see As Left
Calibration on page 101).
Error
SPAN
0
ZERO
0 25 50 75 100%

As Left Calibration

Multiple As Left calibrations are allowed just as they are for As Found
calibrations. The As Left calibrations document the state of the in-
strument after the possible adjustment.
MC5-IS does not require you to save any As Left calibrations. If the
As Found calibration proves to be good and no adjustment is
needed, you may omit the As Left calibrations.
Error Error
0 0
0 25 50 75 100% 0 25 50 75 100%
The pictures above display different As Left calibration graphs after
two different kinds of adjustments.
In the leftmost picture, the error is minimized at the end points of the
instrument range. This results in a relatively notable error in the
middle of the span. If the middle of the span is the area, where the
measurement is usually situated, then this method is not recom-
mended.
The rightmost picture displays the error graph when the maximum
error is minimized by "lowering the graph". As a result, the error
minimum is at approx. 30 % and 70 % of the span.
Note that these adjustment strategies are just examples. There is
an unlimited amount of "correct" ways to adjust an instrument.
101