Series Availability
EA , ED , EK , EP

General Description
Option L is the addition of soft copper lead ribbons to open-faced polyimide-backed gages. The use of this type of ribbon results in a thinner and more conformable gage than would be the case with round wires of equivalent cross section. At the same time, the ribbon is so designed that it forms almost as readily in any desired direction.

Leads
Nominal ribbon size for most gages is 0.012 wide x 0.004 in thick (0.30 x 0.10 mm). Leads are approximately 0.8 in (20 mm) long. See also leadwire orientations .

Solder
+430 deg F (+220 deg C) tin-silver alloy.

Temperature Limit
+400 deg F (+200 deg C).

Fatigue Life
Fatigue life will normally be degraded by Option L. This occurs primarily because the copper ribbon has limited cyclic endurance. When it is possible to carefully dress the leads so that they are not bonded in a high strain field, the performance limitation will not apply. Option L is not often recommended for very high endurance gages such as the ED Series.

Size
Matrix size is unchanged.

Strain Range
Strain range will usually be reduced by the addition of Option L.

Flexibility
Gages with Option L are not as conformable as standard gages.

Resistance Tolerance
Not affected.

Reference Table