KFEL Series
High-elongation Foil Strain Gages

  • RoHS

Summary

Developed to measure strain from elastic to plastic region on structures, the KFEL series foil gages allow the strain to be measured 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 wire: -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
Fatigue lives at normal temp. (times) 1x106 (±1500μm/m)

Relative images

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Contents

When ordering, suffix the lead-wire cable code to the model number with a space in between.

E.g.
For the gage with a vinyl-coated flat 2-wire cable 10 m long pre-attached
→ KFEL-5-120-C1 L10M2R

For the gage with a vinyl-coated flat 3-wire cable 5 m long pre-attached
→ KFEL-5-120-D35 L5M3S

If no lead-wire cable code is suffixed, the gage is delivered with gage leads only.
(Silver-covered copper wires 25 mm long)

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

Products table

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KFEL 120Ω Uniaxial

    • RoHS

10 gages/pkg

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

KFEL 120Ω Biaxial, 0°/90°

    • RoHS

10 gages/pkg

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

KFEL 120Ω Triaxial 0°/90°/45°

    • RoHS

10 gages/pkg

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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Remarks

Note:
Besides the usual surface treatment with sandpaper, the gage bonding surface should be treated with the surface treatment agent S-9B if the gage is bonded to non-adhesive plastics such as polyethylene and polypropylene.
Then, bond the gage using the adhesive CC-36.
For S-9B and bonding conditions for other special materials, contact us.

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