Long-Travel Extensometer

The long-travel 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.

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zwickiLine long travel
ProLine long travel
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29.04.2019

Optical extensometers: A closer look for a better view

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.
Very low drag-forces.
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 and the sensor arms are applied automatically at the start of the test. At the end of the test they are withdrawn and the initial gage-length is re-set via the traverser movement.
Robust construction with impact-resistant measurement system.
Low-friction measuring-carriage mounting minimizes transmission errors.

Technical data

Long-travel extensometer for mounting on AllroundLine or cLine testing systems

Type	Long-travel extensometer
Item No.	1040304
Initial gauge length	10 ... 200	mm
Measured displacement, max.	1000 - L₀	mm
Resolution	1.5	µm
Accuracy	Class 1	to EN ISO 9513 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

Long-Travel Extensometer at a Glance⁽⁴⁾

Long-travel extensometer

Plastics test

Long-travel extensometer

Plastics test
AllroundLine with long-travel extensometer

AllroundLine with long-travel extensometer
ProLine long-travel extensometer

Plastics test

ProLine long-travel extensometer

Plastics test
ProLine with ProLine long-travel extensometer

Plastics test

ProLine with ProLine long-travel extensometer

Plastics test

zwicki long travel extensometer

CVP RS

Key advantages and features of the zwicki long-travel exensometer

Application description

The longstroke extensometer is suitable for direct extension measurement on all elastic materials, including elastomers, plastics, leather, textiles, etc. and can be used for exact determination of offset yield and strain at break in tensile tests. Standards-compliant secant modulus or E-modulus determination with the specified initial gage length is not provided.

Technical data

Long-travel extensometer 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
Requires:
Item No.	046637
Digital measurement module

Option 022810 is required in conjunction with a protective screen.

ProLine long-travel extensometer

CVP RS

Key advantages and features of the ProLine long-travel extensometer

Application description

Technical data

Long-travel extensometer for ProLine testing systems

Item No.	085803	085802	085804
Testing system	Z100	Z005 to Z050	Z010 TH, Z030 TN, Z050 TN
Initial gage length	10 to 200	10 to 200	10 to 200	mm
Measurement travel, max. (∆L + L₀)	800 - L₀	800 - L₀	1000 - L₀	mm
Resolution	3	3	3	μm
Gage-length adjustment	manual via scale, stepless adjustment	manual via scale, stepless adjustment	Manual via scale, stepless adjustment
Sensor-arm attachment	Manual
Accuracy	Class 1	Class 1	Class 1	As per EN ISO 9513, 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 (H x W x D)	1170 x 82 x 180	1170 x 82 x 180	1370 x 82 x 180	mm
Weight	15	15	21	kg
Requires:
Item No.	046637	046637	046637
Digital measurement module