KFEM Series
Ultrahigh-elongation Foil Strain Gages

Summary

KFEM series ultrahigh-elongation foil gages allow strain to be measured on various regions of structures, from elastic to plastic, and are suitable for large strain measurement.
They can measure 20 to 30% of material deformation.

*Strain limit of 20% to 30% is ensured for simple tension applied to the gage bonded on stainless steel (SUS 304) or aluminum alloy (A1050) at normal temperature.

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

Features

• Measurement of 20% to 30% material deformation possible
• Laminate protruding from the tip of gage base ensures improved adhesive property, making the gages hard to peel off.
• Foil material has an improved elongation property and is hard to disconnect.

Major Properties

Materials Resistive element	CuNi alloy foil
Materials Base	Polyimide
Operating temperature in combination with major adhesives after curing (°C)	CC-36: -20 to 80ºC
Operating temperature in combination with major leadwire cables (°C)	Polyester-coated copper wire: -20 to 80ºC Vinyl-coated flat cable (L-6, L-7): -10 to 80ºC
Self-temperature-compensation (°C)	ー
Applicable linear expansion coefficients (×10^-6/℃)	ー
Strain limits at normal temp. (approx. %)	20 to 30
Fatigue lives at normal temp. (times)	ー

Relative images

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

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

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]