5 non-linearity, 6 wire characteristics, Non-linearity wire characteristics – Dillon Quick-Check Wire Tension Meter (Red) User Manual

Page 32

Advertising
background image

32

Quick-Check Red User Instructions

6.5 Non-linearity

Most three-point tension meters employ only linear characterization and have large
errors at the midpoints (up to 15%). The Quick check uses multi-point segmenting to
correct for non-linearity, reducing it to less than 0.2%.

6.6 Wire Characteristics

Creep

Every material including steel exhibits creep under load. It will neck down
over time, quite quickly over the first few seconds and much slower as time
progresses. A wire cable also sees creep from the wire spacing and wind.
This effect is seen as a display that drifts lower after it has been clamped
in line.

Variations Material that varies in diameter or shape will have different output at the

same tension

Strands

The best cable assembly is one that is perfectly round, as it will not change
contact geometry with the wire twist. The closer the wire cable cross
section appears to be round, the better the measurement performance will
be.

Advertising