General-purpose Foil Strain Gages KFGS Series

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1 General-purpose Foil Strain Gages KFGS Series

2 KFGS New strain gages with the world highest level performance Point CE compliant All models are RoHS compliant Point Improved Quality Excellent long-term stability, repeatability and reliability Point Improving for gluing work Modification of center marks Brighter and more transparent Improved flexibility Point 4 New package Every gage packaged separately Substantial information on package

Reference General-purpose Foil Strain Gages KFGS

for affixing work Modification of center marks

Improved quality Excellent long-term stability,

packaged separately Substantial information on package

8 0 00 400 600 800 000 Time (Hour) 00 Output without

3 Reference General-purpose Foil Strain Gages KFGS series New strain gages with the world highest level performance What s new? CE compliant All models are RoHS compliant Improving for affixing work Modification of center marks Brighter and more transparent Improved flexibility Improved quality Excellent long-term stability, repeatability, and reliability New package Every gage packaged separately Substantial information on package Output without load (μm/m) Time (Hour) 00 Output without load (μm/m) E+00.0E E E E+07.0E+08 Number of load cycles n

4 E_H8-8 May 06

5 A strain gage detects a minute dimensional change (Strain) as an electric signal. By measuring strain with the gage bonded to a material or structure, the strength or safety can be known. Thus, the strain gages are used in various industries including machinery, automobile, electric, civil engineering, medical, and food. The strain gage are also adopted as sensing elements of force, pressure, acceleration, vibration, displacement, and torque transducers for various purposes including measurement and control of production lines. Kyowa produced the first Japanese-made strain gage in 9, and based on the abundant experience and technology accumulated for these years, the company manufactures a variety of highperformance, environmentally friendly strain gages. Principle of Strain Gages If external tensile force or compressive force increases or decreases the resistance proportionally increases or decreases. Suppose that original resistance R changes by Δ R because of strain ε, the following equation can be set up. Where, Ks is a gage factor, expressing the sensitivity coefficient of strain gages. General purpose strain gages use copper-nickel or nickel-chrome alloy for the resistive elements, and the gage factor provided by these alloys is approximately. ΔR R = Ks ε Types of Strain Gages Types of strain gages are classified into foil strain gage, wire strain gage, and semiconductor strain gage, etc. Structure of a Foil Strain Gage The foil strain gage has metal foil on the electric insulator of the thin resin, and gage leads attached, as shown in Fig. below. The strain gage is bonded to the measuring object with a dedicated adhesive. Strain occurring on the measuring site is transferred to the strain sensing element via adhesive and the resin base. For accurate measurement, the strain gage and adhesive should be compatible with the measuring material and operating conditions such as temperature, etc. Fig. Structure of a foil strain gage Base length Grid width Grid length (Sensing part) (Gage length) Resin cover Resin base Base width Center marks Resin base Metallic foil Resin cover Lead-free solder Bonded surface (Rear) Gage leads (Silver-clad copper wires, 0. to 0.6 mm and mm long)

6 General-purpose Foil Strain Gages KFGS Grid width Base width Grid length (Gage length) Base length Gage leads The KFGS series gages use polyimide resin for the base part that is approx. μm thick. It ensures excellent flexibility. The outstanding moisture proof enables the KFGS gages to operate in outdoor measurement effectively. Unless directly exposed to water drop, no coating treatment is required. Applicable Adhesives and Operating Temperature Range after Curing CC-A: -96 to 0 C ( 0 to 80 C with vinyl-coated cable attached) CC-: -0 to 0 C ( 0 to 80 C with vinyl-coated cable attached) CC-6: -0 to 00 C ( 0 to 80 C with vinyl-coated cable attached) EP-40: - to 0 C ( 0 to 80 C with vinyl-coated cable attached) PC-600: -96 to 0 C ( 0 to 80 C with vinyl-coated cable attached) Notes on pre-attached lead-wire cables Standard color of the -wire cable pre-attached to uniaxial gages is red (R). If desired, a white, green, yellow or black cable can be pre-attached. Standard -wire cable pre-attached to uniaxial gages has red stripes. If desired, the red stripes can be changed to blue or yellow stripes. In the case of a triaxial gage, -wire cables are color-coded with red, white and green stripes for 0, 90 and, respectively and -wire cables, with red, yellow and blue stripes for 0, 90 and, respectively. The letter code is S in common. Types, lengths and codes of lead-wire cables pre-attached to KFGS series gages Types Polyester coated Polyester coated -wire copper cables -wire copper cables Vinyl-coated flat -wire cables Vinyl-coated flat -wire cables Mid-temperature -wire cables Mid-temperature -wire cable Length cm 0 cm m m m Operating temp. C,C,C, C,C6,D, D,D,D4,D6, D9,D6,D7, D9,D8,D NC N0C NM -96 to 0C C,C,C, C,C6, D,D4,D9, D6,D7,D9, D8,D NC N0C NM Twisted for 0 cm (Exceptions exist) C,C,C, C,C6, D9,D9 LMR LMR LMR D,D4, D6,D7, D8, D9 LMS LMS LMS L-6, L-9 for 6 m C,C,C, C,C6, D,D9,D9, D LMR LMR LMR D,D4, D6,D7, D8, D9 LMS LMS LMS C,C,C, C,C6, D,D4,D9, D6,D7,D9, D8,D9 RM RM RM -0 to 80C -00 to 0C C,C,C, C,C6, D,D,D4,D9, D6,D7,D9, D8,D,D9 RM RM RM L-7, L-0 for 6 m L- L- * For other lead-wire cable lengths, contact us. When ordering, suffix the lead-wire cable code to the model number with a space in between. E.g. KFGS--0-C- NC for the gage with a polyester-coated -wire copper cable cm long KFGS--0-C- NC KFGS--0-C- LMR for the gage with a vinyl-coated flat -wire cable m long KFGS--0-C- LMR KFGS--0-D7- LMS for the gage with a vinyl-coated flat -wire cable m long KFGS--0-D7- LMS KFGS--0-C- RM for the gage with a mid-temperature -wire cable m long KFGS--0-C- RM KFGS--0-D7- RM for the gage with a mid-temperature -wire cable m long KFGS--0-D7- RM If there is no code of lead-wire cable after the model number, the gage is delivered with silver-clad copper wires mm long. 4

7 Patterns Gage Resistance, Gage Factors Uniaxial Silver-clad copper gage leads mm long Resistance: 0 Ω Gage factors: Approx.. Models Base Color * Dimensions (mm) Grid Base Length Width Length Width Note: * Base color stands for different coefficients of linear expansion. Common steel Stainless steel Aluminum alloy Magnesium alloy or sometimes wood KFGS-0-0-C The above picture is KFGS-0-0-C- KFGS-0-0-C The above picture is KFGS-0-0-C-6 KFGS-0-0-C The above picture is KFGS-0-0-C- KFGS-6-0-C The above picture is KFGS-6-0-C-7 KFGS--0-C The above picture is KFGS--0-C- KFGS-4N-0-C The above picture is KFGS-4N-0-C-6 KFGS--0-C The above picture is KFGS--0-C- KFGS--0-C The above picture is KFGS--0-C-7 KFGS-N-0-C The above picture is KFGS-N-0-C- KFGS--0-C The above picture is KFGS--0-C-6 KFGS-N-0-C The above picture is KFGS-N-0-C- KFGS-0-0-C The above picture is KFGS-0-0-C-7 KFGS-0-0-C The above picture is KFGS-0-0-C- KFGS-0-0-C- KFGS-0-0-C-6 KFGS-0-0-C- KFGS-0-0-C-7 KFGS-0-0-C- KFGS-0-0-C-6 KFGS-0-0-C- KFGS-0-0-C-7 KFGS-0-0-C- KFGS-0-0-C-6 KFGS-0-0-C- KFGS-0-0-C-7 KFGS-6-0-C- KFGS-6-0-C-6 KFGS-6-0-C- KFGS-6-0-C-7 KFGS--0-C- KFGS--0-C- KFGS--0-C-6 KFGS--0-C- KFGS--0-C-7 KFGS-4N-0-C- KFGS-4N-0-C-6 KFGS-4N-0-C- KFGS-4N-0-C-7 KFGS--0-C- KFGS--0-C-6 KFGS--0-C- KFGS--0-C-7 KFGS--0-C- KFGS--0-C- KFGS--0-C-6 KFGS--0-C- KFGS--0-C-7 KFGS-N-0-C- KFGS-N-0-C-6 KFGS-N-0-C- KFGS-N-0-C-7 KFGS--0-C- KFGS--0-C-6 KFGS--0-C- KFGS--0-C-7 KFGS-N-0-C- KFGS-N-0-C-6 KFGS-N-0-C- KFGS-N-0-C-7 KFGS-0-0-C- KFGS-0-0-C-6 KFGS-0-0-C- KFGS-0-0-C-7 KFGS-0-0-C- KFGS-0-0-C-6 KFGS-0-0-C- KFGS-0-0-C For wood For wood 0 gages/pkg

8 Patterns Gage Resistance, Gage Factors Biaxial, 0 /90 stacked rosette Resistance: 0 Ω Gage factors: Approx.. The above picture is KFGS-0-0-D6- Triaxial, 0 /90 / stacked rosette for Stress Analysis Resistance: 0 Ω Gage factors: Approx.. 90 The above picture is KFGS-0-0-D7- Biaxial, 0 /90 plane arrangement Resistance: 0 Ω Gage factors: Approx.. Models KFGS-0-0-D6- KFGS-0-0-D6-6 KFGS-0-0-D6- KFGS-0-0-D6-7 KFGS--0-D6- KFGS--0-D6-6 KFGS--0-D6- KFGS--0-D6-7 KFGS--0-D6- KFGS--0-D6-6 KFGS--0-D6- KFGS--0-D6-7 KFGS--0-D6- KFGS--0-D6-6 KFGS--0-D6- KFGS--0-D6-7 KFGS--0-D6- KFGS--0-D6-6 KFGS--0-D6- KFGS--0-D6-7 KFGS-0-0-D7- KFGS-0-0-D7-6 KFGS-0-0-D7- KFGS-0-0-D7-7 KFGS--0-D7- KFGS--0-D7-6 KFGS--0-D7- KFGS--0-D7-7 KFGS--0-D7- KFGS--0-D7-6 KFGS--0-D7- KFGS--0-D7-7 KFGS--0-D7- KFGS--0-D7-6 KFGS--0-D7- KFGS--0-D7-7 KFGS--0-D7- KFGS--0-D7-6 KFGS--0-D7- KFGS--0-D7-7 Base Color * Dimensions (mm) Grid Base Length Width Length Width Note: * Base color stands for different coefficients of linear expansion. 90 The above picture is KFGS--0-D- KFGS--0-D- KFGS--0-D-6 KFGS--0-D- KFGS--0-D-7 Biaxial, 0 /90 for torque measurement Resistance: 0 Ω Gage factors: Approx The above picture is KFGS--0-D- KFGS--0-D- KFGS--0-D-6 KFGS--0-D- KFGS--0-D gages/pkg 6

9 Patterns Gage Resistance, Gage Factors Biaxial, 0 /90 for torque measurement Resistance: 0 Ω Gage factors: Approx.. Models Base Color * Dimensions (mm) Grid Base Length Width Length Width Note: * Base color stands for different coefficients of linear expansion. The above picture is KFGS--0-D- KFGS--0-D- KFGS--0-D-6 KFGS--0-D- KFGS--0-D Triaxial, 0 /90 / Resistance: 0 Ω Gage factors: Approx.. The above picture is KFGS--0-D-6 Triaxial, 0 /0 /40 Resistance: 0 Ω Gage factors: Approx.. KFGS--0-D- KFGS--0-D-6 KFGS--0-D- KFGS--0-D The above picture is KFGS--0-D4-6 0 Quadraxial, 0 /0 /90 /0 Resistance: 0 Ω Gage factors: Approx.. KFGS--0-D4- KFGS--0-D4-6 KFGS--0-D4- KFGS--0-D4-7 KFGS--0-D4- KFGS--0-D4-6 KFGS--0-D4- KFGS--0-D The above picture is KFGS--0-D6- KFGS--0-D6- KFGS--0-D6-6 KFGS--0-D6- KFGS--0-D6-7 Uniaxial, with lead wires from both ends Resistance: 0 Ω Gage factors: Approx The above picture is KFGS--0-C-7 The above picture is KFGS--0-C-7 KFGS--0-C- KFGS--0-C-6 KFGS--0-C- KFGS--0-C-7 KFGS--0-C- KFGS--0-C-6 KFGS--0-C- KFGS--0-C gages/pkg 7

10 Patterns Gage Resistance, Gage Factors Models Uniaxial, for shearing strain measurement Resistance: 0 Ω Gage factors: Approx.. Base Color * Dimensions (mm) Grid Base Length Width Length Width Note: * Base color stands for different coefficients of linear expansion. The above picture is KFGS--0-C- The above picture is KFGS--0-C6- Torque measurement is possible by using C and C6 in combination. KFGS--0-C- KFGS--0-C-6 KFGS--0-C- KFGS--0-C-7 KFGS--0-C6- KFGS--0-C6-6 KFGS--0-C6- KFGS--0-C6-7 Uniaxial -element, for concentrated stress measurement Resistance: 0 Ω Gage factors: Approx (Pitch) P = mm for gage length mm P = mm for gage length mm The above picture is KFGS--0-D9-6 N0C P = mm for gage length mm (Pitch) P = mm for gage length mm The above picture is KFGS--0-D9-6 N0C KFGS--0-D9- N0C KFGS--0-D9-6 N0C KFGS--0-D9- N0C KFGS--0-D9-7 N0C KFGS--0-D9- N0C KFGS--0-D9-6 N0C KFGS--0-D9- N0C KFGS--0-D9-7 N0C KFGS--0-D9- N0C KFGS--0-D9-6 N0C KFGS--0-D9- N0C KFGS--0-D9-7 N0C KFGS--0-D9- N0C KFGS--0-D9-6 N0C KFGS--0-D9- N0C KFGS--0-D9-7 N0C Biaxial -element stacked rosette, for concentrated stress measurement Resistance: 0 Ω Gage factors: Approx gages/pkg gages/pkg gages/pkg gages/pkg Upper-side gage pattern (Pitch) Pmm Lower-side gage pattern The above picture is KFGS--0-D9- N0C Uniaxial 60Ω gages Resistance: 60 Ω Gage factors: Approx.. The above picture is KFGS--60-C-7 The above picture is KFGS--60-C-7 KFGS--0-D9- N0C KFGS--0-D9-6 N0C KFGS--0-D9- N0C KFGS--0-D9-7 N0C KFGS--60-C- KFGS--60-C-6 KFGS--60-C- KFGS--60-C-7 KFGS--60-C- KFGS--60-C-6 KFGS--60-C- KFGS--60-C gages/pkg Figures in ( ) are for lower-side gage patterns. Use gages in parallel connection for bending compensation is possible. 0 gages/pkg unless specified notes. 8

The above picture is KFGS--0-C- The above picture is KFGS--0-C- The above picture is KFGS--0-C- The above picture is KFGS--0-C- KFGS--0-C- KFGS--0-C-6 KFGS--0-C- KFGS--0-C-7 KFGS--0-C- KFGS--0-C-6

11 Patterns Gage Resistance, Gage Factors Uniaxial 0Ω gages Resistance: 0 Ω Gage factors: Approx.. Models Base Color * Dimensions (mm) Grid Base Length Width Length Width Note: * Base color stands for different coefficients of linear expansion. The above picture is KFGS--0-C- The above picture is KFGS--0-C- The above picture is KFGS--0-C- The above picture is KFGS--0-C- KFGS--0-C- KFGS--0-C-6 KFGS--0-C- KFGS--0-C-7 KFGS--0-C- KFGS--0-C-6 KFGS--0-C- KFGS--0-C-7 KFGS--0-C- KFGS--0-C-6 KFGS--0-C- KFGS--0-C-7 KFGS--0-C- KFGS--0-C-6 KFGS--0-C- KFGS--0-C Biaxial 0Ω gages, 0 /90 stacked rosette Resistance: 0 Ω Gage factors: Approx.. 90 The above picture is KFGS--0-D6-6 KFGS--0-D6- KFGS--0-D6-6 KFGS--0-D6- KFGS--0-D6-7 KFGS--0-D6- KFGS--0-D6-6 KFGS--0-D6- KFGS--0-D6-7 KFGS--0-D6- KFGS--0-D6-6 KFGS--0-D6- KFGS--0-D6-7 KFGS--0-D6- KFGS--0-D6-6 KFGS--0-D6- KFGS--0-D6-7 Triaxial 0Ω gages, 0 /90 / stacked rosette Resistance: 0 Ω Gage factors: Approx The above picture is KFGS--0-D7-7 KFGS--0-D7- KFGS--0-D7-6 KFGS--0-D7- KFGS--0-D7-7 KFGS--0-D7- KFGS--0-D7-6 KFGS--0-D7- KFGS--0-D7-7 KFGS--0-D7- KFGS--0-D7-6 KFGS--0-D7- KFGS--0-D7-7 KFGS--0-D7- KFGS--0-D7-6 KFGS--0-D7- KFGS--0-D gages/pkg 9

12 Patterns Gage Resistance, Gage Factors Biaxial 0Ω gages, 0 /90 Resistance: 0 Ω Gage factors: Approx.. Models Base Color * Dimensions (mm) Grid Base Length Width Length Width Note: * Base color stands for different coefficients of linear expansion. 90 The above picture is KFGS--0-D-6 KFGS--0-D- KFGS--0-D-6 KFGS--0-D- KFGS--0-D-7 Biaxial 0Ω gages 0 /90 for torque measurement Resistance: 0 Ω Gage factors: Approx The above picture is KFGS--0-D- The above picture is KFGS--0-D- KFGS--0-D- KFGS--0-D-6 KFGS--0-D- KFGS--0-D-7 KFGS--0-D- KFGS--0-D-6 KFGS--0-D- KFGS--0-D Uniaxial 00Ω gages for making transducers Resistance: 00 Ω Gage factors: Approx.. The above picture is KFGS--00-C-7 The above picture is KFGS--00-C-7 KFGS--00-C- KFGS--00-C-6 KFGS--00-C- KFGS--00-C-7 KFGS--00-C- KFGS--00-C-6 KFGS--00-C- KFGS--00-C Uniaxial 000Ω gages for making transducers Resistance: 000 Ω Gage factors: Approx.. The above picture is KFGS--K-C-7 The above picture is KFGS--K-C-7 KFGS--K-C- KFGS--K-C-6 KFGS--K-C- KFGS--K-C-7 KFGS--K-C- KFGS--K-C-6 KFGS--K-C- KFGS--K-C gages/pkg 0

KFGS gages equipped with a gage terminal enable one-touch connection/disconnection of the lead-wire cable. They are suitable for residual stress measurement with the cutting method.

13 Patterns Gage Resistance, Gage Factors Uniaxial Resistance: 0 Ω Gage factors: Approx.. Models Base Color * KFGS Series Foil Strain Gages with Gage Terminal Dimensions (mm) Grid Base Length Width Length Width Note: * Base color stands for different coefficients of linear expansion. KFGS gages equipped with a gage terminal enable one-touch connection/disconnection of the lead-wire cable. They are suitable for residual stress measurement with the cutting method. A clip equipped dedicated cable T-C6 (Vinyl-coated, m long) is optionally available. T-C6 Applicable Adhesives and Operating Temperature Range after Curing PC-600: -96 to 0 C CC-6: -0 to 00 C CC-A: -96 to 0 C EP-40: - to 0 C CC-: -0 to 0 C (When the clip-equipped dedicated cable is used, the operating temperature range of each adhesive after curing is 0 to 80 C.) The above picture is KFGS--0-C- T-F7 Biaxial, 0 /90 stacked rosette Resistance: 0 Ω Gage factors: Approx.. KFGS--0-C- T-F7 KFGS--0-C-6 T-F7 KFGS--0-C- T-F7 KFGS--0-C- T-F7 KFGS--0-C-6 T-F7 KFGS--0-C- T-F Polyester-coated copper cable mm long 0.4 Polyester-coated copper cable mm long 90 The above picture is KFGS--0-D6-6 T-F7 Triaxial, 0 /90 / stacked rosette Resistance: 0 Ω Gage factors: Approx.. KFGS--0-D6- T-F7 KFGS--0-D6-6 T-F7 KFGS--0-D6- T-F7 KFGS--0-D6- T-F7 KFGS--0-D6-6 T-F7 KFGS--0-D6- T-F Polyester-coated copper cable mm long 0.4 Polyester-coated copper cable mm long The above picture is KFGS--0-D7- T-F7 KFGS--0-D7- T-F7 KFGS--0-D7-6 T-F7 KFGS--0-D7- T-F7 KFGS--0-D7- T-F7 KFGS--0-D7-6 T-F7 KFGS--0-D7- T-F7 KFGS Series Foil Strain Gages for Boring Method Triaxial, 0 / /90 Resistance: 0 Ω Designed to measure residual stress released by the boring method. Gage factors: Approx Polyester-coated copper cable mm long 0.4 Polyester-coated copper cable mm long Applicable Adhesives and Operating Temperature Range after Curing CC-A: -96 to 0 C EP-40: - to 0 C CC-: -0 to 0 C PC-600: -96 to 0 C CC-6: -0 to 00 C 90 For KFGS gages with the lead-wire cable pre-attached, refer to page 4. The above picture is KFGS--0-D8-7 KFGS--0-D8- KFGS--0-D8-6 KFGS--0-D8- KFGS--0-D8-7 KFGS-.-0-D8- KFGS-.-0-D8-6 KFGS-.-0-D8- KFGS-.-0-D Diameter of gage center is 0.8 Diameter of gage center is. 0 gages/pkg

You can count on Kyowa. Feel free to contact us, if there is something you would like to know or do not understand about Kyowa products. Americas Region Sales Network KYOWA AMERICAS, Inc.

14 You can count on Kyowa. Feel free to contact us, if there is something you would like to know or do not understand about Kyowa products. Americas Region Sales Network KYOWA AMERICAS, Inc. TEL: Web: China KYOWA ELECTRONIC(SHANGHAI)TRADING CO.,LTD. TEL: Web: China Japan Thailand Americas Region Thailand KYOWA DENGYO(THAILAND) CO.,LTD. TEL: Web: Other Countries or Regions Please visit below URL. Web: Cat.No. 07 E- Printed in Japan June 06

General-purpose Foil Strain Gages (KFGS)

General-purpose Foil Strain Gages (KFGS) -8 General-purpose Foil Strain Gages KFGS Grid width Grid length (Gage length) length The KFGS series gages use polyimide resin for the base that is approx. μm