Electronic Extensometer

Model:

Introduction:

The electronic extensometers made according to resistance strain principle, and have YYU, YYJ two series. It has legerity structure, good stability and easy to operate. Have became the essential sensor for strain automatic testing and been widely used in various academies, scientific research institutes, factories, laboratories

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Application

1.YYU series mainly used to determine the axis strain .For example, modulus of elasticity E, prescriptive

non-proportional extend stretch Rpxx, prescriptive general extend stretch Rtxx, various elongation percentage, strain hardening index n and other parameters.

2.YYJ series mainly used to determine Rupture Mechanics and transverse strain or radial strain, such as Poisson′s Ratioμ、plastic strain ratio r、KⅠC、COD and so on.

Specification

Description	YYU	YYU-SH	YYJ	YYJ-H
Gauge length	500mm；250mm 200mm；100mm 50mm；25mm；20mm	100mm 50mm 25mm	25mm 10mm 5mm	25mm 20mm 12.5mm
Strain resistance	350Ω
Resolution of output value	2mV/V
Accuracy	+/-0.5% of FS
Supplying voltage	≤6V

Brochure:

Model	Gauge length (mm)	Deformation (mm)	Error	Note
YYU	500	5 10 25	Better than 0.5%	For steel strand testing
	250
	200
	100			For common tension testing
	50
	25
	20
YYU-SH	100			For mean strain testing
	50
	25
YYJ	10	4		For fracture mechanics testing
YYJ	5	2		For fracture mechanics testing
YYJ-H	25	3		For testing r and radial strain
	20	3
	12.5	3
YYJ-10/6-N	6	10		Torsion extensometer
Digital display extensometer	≤500	5; 10; 25		For tension testing
High-low Temperature extensometer	≤500	5; 10; 25		For tension testing
YYU-YS	25	Within 1mm		For testing concrete and rock
	50
	100

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