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Speci�cations

strain gage constructionfoil SG complete with embedded measuring gridmeasuring gridmaterialConstantan foilthickness µ m3.8 or 5, depending on strain gage typecarriermaterial µ mpolyimidethickness45 10covermaterial µ mpolyimidethickness25 5connectionsTeon wires, 0.051 mm
2 , approx. 40 mm long, connected to AWG28 ribbon cables (PVC insulated) through soldering sleeves in 2-, 3- or 4-wire circuit, in different lengths nominal resistance
1) Ω 120, 350, 700, or 1000, depending on SG typeresistance tolerance
1) 0.3 gage factorapprox. 2 (specied on each package)gage factor tolerance
1) 1temperature coefficient of the gage factor
1) 1/K(115 10) 10
-6 nominal value of the temperature coefficient of the gage factorspecied on each package reference temperatureC23 operating temperature rangewith PVC cablewithout PVC cablefor absolute, i.e. zero point related measurementsC-10 + 90- 10 ... +155for relative, i.e. not zero point related measurementsC-10 + 90- 10 ... +155 transverse sensitivityspecied on each packagefor LY41-3/120+0.2 temperature response specied on each packagetemperature response at customers choice matched to the thermal expansion coefficient α for ferritic steel1/K10.8 10
-6 α for aluminum1/K23 10
-6 α for plastic material1/K65 10
-6 α for austenitic steel1/K16 10
-6 α for titanium/ gray steel1/K9 10
-6 α for molybdenum1/K5.4 10
-6 α for quartz1/K0.5 10
-6 tolerance of the temperature response
1) 1/K0.3 10
-6 temperature response with matching in the range of
3) C-10 + 120 mechanical hysteresisat reference temperature and strain ε = 1,000 µ m/mon strain gage type LY 11-6/120at 1st load cycle and adhesive Z 70 µ m/m1at 3rd load cycle and adhesive Z 70 µ m/m0.5at 1st load cycle and adhesive 60 µ m/m2.5at 3rd load cycle and adhesive 60 µ m/m1 maximum elongationat reference temperature using adhesive Z 70 on strain gage type LY41-3/120absolute strain value for positive direction µ m/m20,000 (2 )absolute strain value for negative direction µ m/m25,000 (2.5)
> > fatigue lifeat reference temperature using adhesive Z 70 on strain gage type LY41-3/120number of load cycles Lwatalternating strain ε w= 1,000 µ m/m andzero point drift ε m ∆
300 µ m/m 1
. 10
7 (test was interrupted at 10
7 )zero point drift ε m ∆
30 µ m/m5
. 10
6 minimum radius of curvature, longitudinal and transverse, at reference temperaturewithin the measuring grid areamm0.3within the area of the solder tabsmm10bonding material that can be usedcold curing adhesivesZ70; 60; 280
1) = Properties of strain gages without at ribbon cables (incl. Teon wire)For more information such as permissible excitation voltage and dimensions, see Strain gages /Y series (page 23) 3) Matching to plastic (code numer 8) is only possible in the temperature range of -10+50C.

Strain Gages and Accessories43