OPERATOR’S MANUAL
32
SECTION 1
Standard Deviation σ
Is a measure of the variation of the samples of a statistical
group.
If a group of n values has a mean of x then its standard
deviation is given by;
Sub - Group
Grouping of samples to enable analysis, with an allowable
range of 1 - 50.
Threshold Torque Value
Level of torque, which a signal must rise above and then
fall below, to be considered a valid torque cycle. This may
be set in the range of 1 to 50% of rated span or the Min
Torque Value, whichever is the lower.
Units of Measure
It is possible with TorqueStar Opta to read a transducer
calibrated in say Nm, and convert internally to display and
store in any of the other torque units.
UTA Tx
Family of torque transducers which TorqueStar Opta can
identify by coding links.
UTA Tx ID
Specification of transducer by rating in preselected units.
Used as an identity or ‘name’.
Vertical
Collection of data by round, where a full sub-group is
collected for a characteristic, before stepping to the next
Job.
Vertical plus Prompt
Identical in procedure to that of Vertical mode except that
before stepping to the next characteristic, TorqueStar will
prompt for the fitting of a transducer (even though the correct
one is installed) and will require the ENTER key to be
pressed.
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