KFEL Series
High-elongation Foil Strain Gages

Summary

Developed to measure strain in elastic to plastic region on structures, the KFEL series foil gages can measure strain as large as 10% to 15% with simple tension strain.

Click here for the [Strain Gages with Pre-attached Lead Cables]

Major Properties

Materials Resistive element CuNi alloy foil
Materials Base Polyimide
Operating temperature in combination with major adhesives after curing (°C) CC-36: -10 to 80ºC
Operating temperature in combination with major leadwire cables (°C) Polyester-coated copper cable: -10 to 80ºC
Vinyl-coated flat cable(L-6, L-7): -10 to 80ºC
Self-temperature-compensation (°C) -
Applicable linear expansion coefficients (×10-6/℃) -
Strain limits at normal temp. (approx. %) 15.0
Fatigue lives at normal temp. (times) 1x106 (±1000μm/m)

Contents

Besides the silver-clad copper lead wire, KFEL strain gages with pre-attached lead cables are available on request.
When ordering, please suffix the lead-wire cable code to the model number with a space in between.

e.g.
KFEL-5-120-C1 suffixes L3M2R for the gage with a 3 m long vinyl-coated flat 2-wire cable becomes
KFEL-5-120-C1 L3M2R

For details, please refer to the [Strain Gages with Pre-attached Lead Cables]

Products table

All display

KFEL120Ω Uniaxial

Model Dimensions (mm)
Gage(Grid) Base
Length Width Length Width
KFEL-5-120-C1 5 2.1 11 3.5
KFEL-2-120-C1 2 2.1 8 4

KFEL120Ω Biaxial, 0°/90°

Model Dimensions (mm)
Gage(Grid) Base
Length Width Length Width
KFEL-5-120-D34 5 2.1 13 13
KFEL-2-120-D34 2 2.1 10 10

KFEL120Ω Triaxial 0°/45°/90°

Model Dimensions (mm)
Gage(Grid) Base
Length Width Length Width
KFEL-5-120-D35 5 2.1 13 13
KFEL-2-120-D35 2 2.1 10 10

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