Series Availability
EA , N2A

General Description
Option P is the addition of preattached leadwire cables to many patterns of EA-Series strain gages. Encapsulation seals small "jumper" leadwires at gage end, and cable insulation protects solder joints at cable end. Option P virtually eliminates need for soldering during gage installation.

Leads
A pair of 1-in (25-mm) M-LINE 134-AWP (solid copper, polyurethane enamel) single conductor "jumper" leadwires.

Cable
10 ft (3.1 m) of color-coded, flat, three-conductor 26-gauge (0.404 mm dia.), stranded, tinned-copper with vinyl insulation (similar to M-LINE 326-DFV).

Solder
+430° F (+220° C) tin-silver alloy solder joints, "jumper" to gage. Cable conductors and "jumpers" joined with +361° F solder beneath cable insulation. Exposed leadwires on unattached end of cable are pretinned for ease of hookup.

Temperature Limit
-60° to + 180° F (-50° to +80° C); limited by vinyl insulation on cable.

Grid Encapsulation
Entire grid and tabs are encapsulated.

Fatigue Life
Fatigue life will normally be degraded by Option P, primarily because the copper "jumper" wires have limited cyclic endurance.

Pattern Availability
Most EA-Series single-grid patterns that are 0.062 in (1.5 mm) or greater gage length, with parallel solder tabs on one end of the grid, and suitable for encapsulation. (Consult our Applications Engineering Department for availability of Option P on other gage series/patterns, and for nonstandard cable lengths.)

Size
Matrix size is unchanged.

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

Flexibility
E-backed gages with Option P are not as conformable as standard gages.

Resistance Considerations
Each conductor of the cable has a nominal resistance of 0.04 ohm/ft (0.13 ohm/m). Gage resistance is measured at gage tabs.

Gage Factor
Gage factor is determined for gages without preattached cable.

Resistance Tolerance
Resistance tolerance is normally ±0.5% for single-element gages, and ± 0.6% for muliple-grid gages.

Reference Table