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Speci�cations

TypeLK1x, DK1x, LK2x, LK4x, XK5x, XK1x, DK2x, XK2x, MK1xXK6x, MK2x strain gage constructionfoil strain gage with foil strain gage without coverembedded measuring grid with integrated solder tabs with integrated leadsmeasuring gridmaterialConstantan foilthickness µ m5carriermaterialglass ber reinforced phenolic resinthickness µ m35 10covermaterialthickness µ m25 8–connectionsnickel plated Cu leadsintegratedapprox. 30mm in lengthsolder tabs nominal resistance Ω 350resistance tolerance0.350.3gage factorapprox.2nominal value of the gage factor
4) specied on each packagegage factor tolerance
4) 0.7temperature coefficient of the gage factor1/Kapprox.(115 10)
. 10
-6 nominal value of the temperature coefficient of the gage factorspecied on each package reference temperatureC23 operating temperature rangefor absolute, i.e. zero point related measurementsC- 70 + 200for relative, i.e. not zero point related measurementsC-200 + 200 transverse sensitivityspecied on each packagewithin reference temperature range using adhesive Z 70on strain gage typeLK11E-3/350- 0.09 temperature responsespecied 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 response1/K0.3 10
-6 temperature response with matching in the range of
3) C-10 + 120 Creep adjustment
2) The end loop length u corresponds to a multiple of the grid line width scode letterA: u = 1sM: u = 7sC:u = 2sO: u = 8send loopE:u = 3sQ: u = 9sG:u = 4sS: u = 10sI:u = 5sU: u = 11sK:u = 6sW: u = 12s mechanical hysteresis
1) at reference temperature and strain ε = 1,000 µ m/mon strain gage type LK11E-3/350at 1st load cycle and adhesive Z 70 µ m/m1.1at 3rd load cycle and adhesiveZ 70 µ m/m0.8 maximum elongation
1) at reference temperature using adhesiveZ 70on strain gage typeLK11E-3/350absolute strain value ε for positive direction µ m/m20,000 (2 )absolute strain value ε for negative direction µ m/m50,000 (5 ) fatigue life
1) at reference temperature using adhesiveZ 70alternating strain ε w= 1,000 µ m/m on strain gage typeLK11E- 3/350number of load cyclesand zero point drift ε m ∆
300 µ m/m 10
7 ε m ∆
30 µ m/m3 10
6 minimum radius of curvature, longitudinal and transverse, at reference temperaturemm bonding material that can be used cold curing adhesivesZ 70; 60; 280hot curing adhesivesEP 250; EP 310S
1) The data depend on the various parameters of the specic application and are therefore stated for representative examples only. 2) Different creep adjustments are available per type. 3) Matching to plastic (code numer 8) is only possible in the temperature range of -10+50C. 4) Does not apply for MK1x, MK2x..

Strain Gages and Accessories59