Leadwire Preparation
- Select wire type and size to be used
according to recommendations outlined in
Leadwire Selection
.
- Thermally strip approximately 1/4 in (6 mm)
of insulation from end of wire to be attached to
gage. (Thermal stripping prevents broken or
nicked wires often resulting from mechanical
stripping methods.)
- Tin exposed wire with solder selected.
- Trim tinned conductor so that approximately
0.1 in (2.5 mm) extends from end of insulation.
Longer tinned conductor length is not advisable
since it may extend beyond gage backing and
contact specimen during gage bonding and
clamping.
Note:
Whenever possible, a three-leadwire system should
be employed on single gage (quarter-bridge)
installations. The use of two-wire systems should
be limited to dynamic-only strain measurements or
in static measurements where the two-lead system is
not more than a few inches long and can be
connected to a three-lead cable for routing to the
measuring instrument.
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