KFNB Series
Non-inductive Foil Strain Gages

Summary

The gage element is made of a special alloy which provides less magnetoresistant effect; also, the shape is designed to eliminate induction. Thus, the KFNB series foil strain gages allow the strain to be measured accurately under AC magnetic environments.

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)	PC-600: -196 to 150ºC CC-33A: -196 to 120ºC
Operating temperature in combination with major leadwire cables (°C)	Vinyl-coated normal-temperature low-noise 3-wire cable (L-13): -10 to 80ºC
Self-temperature-compensation (°C)	0 to 150ºC
Applicable linear expansion coefficients (×10^-6/℃)	11, 16, 23
Strain limits at normal temp. (approx. %)	1.0
Fatigue lives at normal temp. (times)	1x10⁴ (±1500μm/m)

Relative images

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

E.g.
KFNB-5-350-C9-11 with a vinyl-coated normal-temperature low-noise 3-wire cable 5 m long pre-attached
→ KFNB-5-350-C9-11 J5M3

If no lead-wire cable code is suffixed, the gage is delivered with 2 polyester-coated copper wires 10 cm long each.

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

Products table

All display

KFNB 350Ω Uniaxial

10 gages/pkg

Model	Dimensions (mm)
	Gage(Grid)		Base
	Length	Width	Length	Width
KFNB-5-350-C9-11	5	6.6	12	10
KFNB-5-350-C9-16	5	6.6	12	10
KFNB-5-350-C9-23	5	6.6	12	10
KFNB-2-350-C9-11	2	3.5	6	5
KFNB-2-350-C9-16	2	3.5	6	5
KFNB-2-350-C9-23	2	3.5	6	5

KFNB 350Ω Biaxial, 0°/90° plane arrangement

5 gages/pkg

Model	Dimensions (mm)
	Gage(Grid)		Base
	Length	Width	Length	Width
KFNB-5-350-D20-11	5	6.6	22	12
KFNB-5-350-D20-16	5	6.6	22	12
KFNB-5-350-D20-23	5	6.6	22	12
KFNB-2-350-D20-11	2	3.5	11	6
KFNB-2-350-D20-16	2	3.5	11	6
KFNB-2-350-D20-23	2	3.5	11	6