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.

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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

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

Option 022810 is required in conjunction with a protective screen.

Long-Stroke Extensometer at a Glance⁽⁴⁾

Long-stroke extensometer

Plastics test

Long-stroke extensometer

Plastics test
AllroundLine with long-stroke extensometer

AllroundLine with long-stroke extensometer
ProLine long-stroke extensometer

Plastics test

ProLine long-stroke extensometer

Plastics test
ProLine with ProLine long-stroke extensometer

Plastics test

ProLine with ProLine long-stroke extensometer

Plastics test