Elcometer E130-S Operating Instructions Manual page 18

On Screen Statistics (T)
User selectable statistical and general measurement information can
be displayed on the gauge. The information to be displayed can be
selected and managed by selecting the Display softkey.
Up to 8 statistics can be selected to be displayed on the reading
Ÿ
screen at any one time via Display/Statistics/Select Statistics.
Ensure that Display/Readings & Selected Stats is also checked.
Ÿ
To view all statistics select Display/Statistics/View All
Ÿ
The following statistical and general information can be displayed on
your gauge:
Symbol / icon Description
η
x
σ
Hi
Lo
CV%
17
R
The number of readings taken
Mean (average)
Standard deviation
Highest reading taken
Lowest reading taken
Coefficient of variation; The COV is defined as the ratio of the
standard deviation to the mean and is a normalised measure of
dispersion - when comparing batches with widely different
means, one should use the coefficient of variation for
comparison instead of standard deviation (
High Limit
Number of readings above the high limit
A user definable upper warning limit can be set. Once the reading
exceeds the limit the gauge notifies the user by turning the
reading and limit icon red, flashing the red LED, and sounding
the alarm beep. For more information see Limits on page
σ).
20.
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