KFRPB Series
Foil Strain Gages for Composite Materials

  • RoHS

KFRPB

Summary

The KFRPB series foil strain gages are self-temperature-compensation gages (SELCOM gages) suitable for strain measurement of composite materials such as CFRP and GFRP. The special gage pattern minimizes the effect of self-heating due to gage current and the effect of reinforcement of low-elasticity materials. To ensure accurate measurement by avoiding the self-heating effect of gage current, consider the following: 1. Select a lower bridge excitation if the amplifier allows selection. 2. Active-dummy method. 3. 350Ω strain gages

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

Major Properties

Materials Resistive element NiCr alloy foil
Materials Base Polyimide
Operating temperature in combination with major adhesives after curing (°C) EP-34B: -55 to 200ºC
CC-33A: -196 to 120ºC
Operating temperature in combination with major leadwire cables (°C) Polyester-coated copper cable: -196 to 150ºC
Vinyl-coated flat cable(L-6, L-7, L-9, L-10): -10 to 80ºC
Mid-temperature cable(L-11, L-12): -100 to 150ºC
Fluoroplastic coated high/low-temp. 3-wire cable(L-3): -196 to 200ºC
Self-temperature-compensation (°C) 0 to 150ºC
Applicable linear expansion coefficients (×10-6/℃) 1, 3, 6, 9
Strain limits at normal temp. (approx. %) 2.2
Fatigue lives at normal temp. (times) 1x106 (±1500μm/m)

Contents

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

E.g.
For the gage with 2 polyester-coated copper wires 15 cm long
→ KFRPB-5-120-C1-1 N15C2

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

Products table

All display

KFRPB 120Ω Uniaxial

KFRPB
    • RoHS

Model Dimensions (mm)
Gage(Grid) Base
Length Width Length Width
KFRPB-5-120-C1-1 5 1.4 15 5
KFRPB-5-120-C1-3 5 1.4 15 5
KFRPB-5-120-C1-6 5 1.4 15 5
KFRPB-5-120-C1-9 5 1.4 15 5
KFRPB-2-120-C1-1 2 1.2 10 5
KFRPB-2-120-C1-3 2 1.2 10 5
KFRPB-2-120-C1-6 2 1.2 10 5
KFRPB-2-120-C1-9 2 1.2 10 5

KFRPB 350Ω Uniaxial

KFRPB
    • RoHS

Model Dimensions (mm)
Gage(Grid) Base
Length Width Length Width
KFRPB-5-350-C1-1 5 1.5 15 5
KFRPB-5-350-C1-3 5 1.5 15 5
KFRPB-5-350-C1-6 5 1.5 15 5
KFRPB-5-350-C1-9 5 1.5 15 5
KFRPB-2-350-C1-1 2 2.2 10 5
KFRPB-2-350-C1-3 2 2.2 10 5
KFRPB-2-350-C1-6 2 2.2 10 5
KFRPB-2-350-C1-9 2 2.2 10 5

KFRPB 120Ω Triaxial, 0°/90°/45° plane arrangement

KFRPB
    • RoHS

Model Dimensions (mm)
Gage(Grid) Base
Length Width Length Width
KFRPB-5-120-D22-1 5 1.4 19 19
KFRPB-5-120-D22-3 5 1.4 19 19
KFRPB-5-120-D22-6 5 1.4 19 19
KFRPB-5-120-D22-9 5 1.4 19 19
KFRPB-2-120-D22-1 2 1.2 15 15
KFRPB-2-120-D22-3 2 1.2 15 15
KFRPB-2-120-D22-6 2 1.2 15 15
KFRPB-2-120-D22-9 2 1.2 15 15

KFRPB 350Ω Triaxial, 0°/90°/45° plane arrangement

KFRPB
    • RoHS

Model Dimensions (mm)
Gage(Grid) Base
Length Width Length Width
KFRPB-5-350-D22-1 5 1.5 19 19
KFRPB-5-350-D22-3 5 1.5 19 19
KFRPB-5-350-D22-6 5 1.5 19 19
KFRPB-5-350-D22-9 5 1.5 19 19
KFRPB-2-350-D22-1 2 2.2 15 15
KFRPB-2-350-D22-3 2 2.2 15 15
KFRPB-2-350-D22-6 2 2.2 15 15
KFRPB-2-350-D22-9 2 2.2 15 15

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