Long-Stroke Extensometer

The long-stroke extensometer is designed for tests on extensible plastics, elastomers, films/foils, textiles, leather and similar elastic materials.

It is primarily used for direct extension measurement on specimens with medium and large extensions in tensile and hysteresis tests and also in temperature chambers (using extended sensor arms). The robust mechanical design of the guide assemblies, together with the swiveling knife-edges, ensures safe, reliable operation with specimens prone to whipping such as elastomers.

 

Long travel extensometer

Application description

The fundamental component of the extensometers is a precise guide profile with two weight-compensated measurement carriages. The two attached sensor arms with interchangeable knife edges are suitable for round and flat specimens, as well as notch-sensitive materials. The gripping force of the sensor arms can be adjusted at the specimen.

The sensor arms and knife edges (round/straight) are included in the extensometer scope of supply.

The zwicki long travel extensometer is ready to be attached on the left side of the zwickiLine without the need for complex alignment tasks, and can be retrofitted at any time.

Key Advantages and Features

Advantages and features

  • Can be used up to specimen break, even with high loads and brittle specimen material.
  • Very high resolution over the entire measurement range.
  • Very large measurement travel.
  • Synchronous force-displacement acquisition.
  • The drag forces are very low.
  • The long travel extensometer can be combined with all analog or digital clip-on extensometers or with a manual transverse strain extensometer.
  • The extensometer is controlled automatically via the test program. At the start of the test, the sensor arms are attached via electric motor. At the end of the test they are detached and the initial gauge-length is reset via the crosshead movement.
  • The extensometer has a robust construction with impact-resistant measurement system.
  • Low-friction measuring-carriage mounting minimizes transmission errors.

Technical data AllroundLine

Long travel extensometer for mounting on AllroundLine or cLine testing system

Type

Long-travel extensometer

Item No.

1040304

Initial gauge length

10 ... 200

mm

Measured displacement, max.

1000 - L0

mm

Resolution

1.5

µm

Accuracy to EN ISO 9513

Class 1 from 1 mm

Drag force, max.

0.2

N

Specimen thickness, max.

depends on sensor arm

Opening and closing of sensor arms

motorized

Dimensions:

Height

1760

mm

Width

192

mm

Depth

280

mm

Weight

29

kg

Technical Data ProLine

Long travel extensometers for ProLine testing systems

Item No.

1040307

1040308

1040309

Testing system

Z100

Z005 to Z050[1]

Z010 TH, Z030 TN, Z050 TN

Initial gauge length

10 to 200

10 to 200

10 to 200

mm

Measurement travel, max.

800 - L0

800 - L0

1000 - L0

mm

Resolution

3

3

3

μm

Gauge-length adjustment

manual via scale, stepless adjustment

Sensor-arm attachment

manual

manual

Manual

Accuracy to EN ISO 9513

Class 1 from 2 mm

Class 1 from 2 mm

Class 1 from 2 mm

Drag force, max.

0.2

0.2

0.2

N

Specimen width, max.

60

60

60

mm

Specimen thickness, max.

20

20

20

mm

Dimensions

Height

1170

1170

1370

mm

Width

82

82

82

mm

Depth

180

180

180

mm

Weight

15

15

21

kg

  1. Not in conjunction with Z010 TH

Technical Datan zwickiLine

Long travel extensometers for zwicki TN and zwicki TH. Not for zwicki type TS!

Item No.

1040306[1]

Initial gauge length

10 to 200

mm

Measurement travel, max.

800 - L0

mm

Resolution

3

µm

Gauge-length adjustment

manual, stepless via scaled stop

Sensor-arm attachment

Manual

Drag force, max.

0.2

N

Specimen width, max.

60

mm

Specimen thickness, max.

20

mm

Dimensions

Height

1170

mm

Width

82

mm

Depth

180

mm

Weight

16

kg

  1. Option 022810 is required in conjunction with a protective screen.
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