digiClip Digital Clip-On Extensometers 

These highly efficient and cost-effective extensometers offer significant advantages over strain-gage systems in terms of measuring range, accuracy and signal processing. digiClip is available from ZwickRoell in four different versions for extension and/or change-in-width measurement. This digital system delivers uniform accuracy over the entire gage length. digiClip's compact design is achieved by miniaturizing the digital scale, while specimen loading is minimized by the close proximity of the lightweight measurement system to the specimen.
digiClip Ekstensometre çatalları

Key Advantages and Features

Advantages and features

  • Very high resolution and accuracy over the entire measuring range.
  • During extension measurement the measuring range can be switched from "Tension only" to "Tension and compression".
  • Low overall height allows digiClip to be used for small grip-to-grip separations, while its low weight and compact design minimize the load on specimen.
  • Adjustable depth-stop with scales for common specimen widths helps to ensure that the clip-on extensometer is always attached centrally to the specimen.
  • Very high resolution (0.02 µm) in all versions.

Description of operation

ZwickRoell Inkremental Ekstensometreler, plastik ve metallerin test için tasarlanmıştır. Metal testinde, uzunluk değişimi ve kesit daralması ölçümü gereksinimlerini karşılamaktadırlar.

Artımlı sistemlerde toplam ölçüm uzunluğu üzerinden sabit kalabilen bir kesinlik hakimdir. Artımlı skalaların mintyatürleştirilmesi olanağı ile ekstensometrelerin kompakt yapısı avantajları sunulmaktadır. Hafif yapıya sahip ölçüm sistemi doğrudan numuneye takılmaktadır. Böylelikle numunenin yükü minimize edilmektedir.

digiClip-Ekstensometrelerin kullanım alanları, farklı ilk ölçüm boyu opsiyonlarına göre ve ölçüm yolunun 'yalnızca çekme' ya da 'Çekme ve basma' gibi ayarlanabilen uyumlu değişikliğine göre değişmektedir.

Tensile Test on Plastics with digiClip and makroXtens

1:41

Tensile test on plastics to ISO 527 with makroXtens

makroXtens II is a universal and versatile, high-accuracy extensometer

digiClip Short & digiClip Long Clip-On Extensometers

Range of application

digiClip Short and digiClip Long are largely identical with regard to range of application, design, operation and the advantages and features they offer.

The difference lies in digiClip Long's extended measurement travel, which allows extensions up to 50% to be covered and makes it suitable in many cases for testing metals up to break.

The digiClip clip-on extensometer is ideal for precise modulus and yield-point determination to ISO 527-1 on rigid and semi-rigid plastics and for determining strain at maximum stress, plus in many cases strain at break on rigid plastics with low extension.

It can also be used for determining the compressive strength of plastics or determining Young's modulus for compression on metals.

Advantages and features

  • digiClip's patented digital measuring system, available exclusively from ZwickRoell, delivers very high accuracy and measured-value stability.
  • Accuracy Class 0.5 (or better) as per ISO 9513 (first measurement point at 20µm) is achieved. The maximum error in differential movement measurement is ±1μm in the initial range, enabling measurements including the following:
    • Young's modulus measurements on plastics
    • tensile tests on metals to ISO 6892-1 Method A(1), closed-loop strain-rate control.
  • The large measurement travel (up to 40 mm) combined with high resolution (0.02 µm) enables strain measurement up to yield point on plastics, plus strain measurement up to break for many materials.
  • Variable initial gage-length setting allows the same extensometer to be used for different specimen geometries.
  • Fast, easy operation simplifies the attachment process and ensures high specimen throughput.
  • High test-result reproducibility is further optimized by the following features.
    • Initial gage-length is maintained precisely during the attachment process – initial gage-length is automatically locked on attachment and unlocked on release.
    • Adjustable depth limit stop with scales for common specimen widths enables precise, reproducible attachment of the extensometer to the specimen.
    • Short lever-arms minimize mechanical transmission errors.
    • Low weight and compact design minimize influences on the specimen.
  • Mounting bracket for attachment to the load frame plus fall protection included in delivery.

Technical data

digiClip clip-on extensometers for AllroundLine, zwickiLine and ProLine testing systems

Type

digiClip, short

digiClip Long

Item No.

078779

078781

Initial gauge length:

Convertible

20/25/25.4/30

mm

Optional

50/50.8/55[1]/75/80/85[1]

mm

Initial gage length:

Convertible

50/50,8 (2")/55[1]

mm

Optional

65/70[1]/75/80/85[1]/100/105[1]

mm

Measurement travel:

For tension

-0.2 to 13.5

-0.2 to 40

mm

For tension and compression

-5.2 to 8.5

-5.2 to 35

mm

Specimen dimensions

Round specimens

up to Ø 20

up to Ø 20

mm

Flat specimens (d x w)

Up to 20 x 30

mm

Flat specimens (d x w)

Resolution

0.02

0.02

μm

Accuracy

Class 0.5

Class 0.5

To EN ISO 9513

overall height

At L0 20, 25, 30

36

mm

At L0 50

60

mm

At L0 80

90

mm

At L0 100

-

mm

At 55 < L0 ≤ 65

-

mm

At 65 < L0 ≤ 105

-

mm

Overall height

At L0 20, 25, 30

-

mm

At L0 50

77

mm

At L0 80

90

mm

At L0 100

110

mm

At 55 < L0 ≤ 65

At 65 < L0 ≤ 105

Weight, approx.

100

170

g

Ambient temperature

+10 to +35

+10 to +35

°C

Housing color

RAL 7011

RAL 7011

  1. Changing the measurement range: see values in the measurement range for tension and compression

digiClip Transverse

Key advantages and features of digiClip Transverse

Applications

The digiClip transverse strain extensometer is designed for r-value determination on metals in accordance with ASTM E517 and ISO 10113. In addition, Poisson's ratio can be determined in tensile tests and in-plane shear (IPS) in the ±45° shear test on fiber composite materials.

Technical data

  • digiClip Transverse for AllroundLine and zwickiLine testing systems
  • with a fixed measurement line

Type

digiClip Transverse

Item No.

078783

Measuring range:

Setting 1

8.5 to 20

mm

Setting 2

13.5 to 25.4

mm

Equals:

with specimen width 10 mm

1.5

mm

with specimen width 15 mm

6.5

mm

with specimen width 20 and 25.4 mm

11.5

mm

Specimen dimensions

flat specimens (d x w)

up to 6 x 10 25

mm

Resolution

0.02

μm

Accuracy

Class 0.5

To EN ISO 9513

Overall height

42

mm

Weight, approx.

115

g

Ambient temperature

+10 to +35

°C

Housing color

RAL 7011

digiClip Biax

Key advantages and features of digiClip Biax

Applications

  • Bu tip ekstensometreler aşağıdaki uygulama alanlarında kullanılabilmektedir:
  • Metal malzemelerde ISO 10113, ASTM E 517 ve ISO 10275 normlarına göre uzama değişimi ve R-değeri tespiti
  • Kompozit malzemelerde oda sıcaklığında yapılan şu testlerde: 
    • Çekme testlerinde uzama değişimi tespiti için
    • Çekme testlerinde Poisson Oranı tespiti için
    • ±45° Shear (Kesme) testlerinde kesme davranışlarının ölçümü (In-Plane Shear, IPS)

Technical data

digiClip Biax for AllroundLine and zwickiLine testing systems

Type

digiClip Biax

Item No.

078785

Measurement travel for extension:

for tension

-0.2 to 41.5

mm

Measurement travel for change in width (with fixed measurement line):

With a specimen width of 10 mm

1.5

mm

With a specimen width of 15 mm

6.5

mm

With a specimen width of 20 and 25.4 mm

11.5

mm

Specimen dimensions

Flat specimens (d x w)

up to 4 x 10 25

mm

Resolution

0.02

μm

Accuracy

Class 0.5

to EN ISO 9513

Mounted height

90

mm

Weight, approx.

300

g

Ambient temperature

+10 to +35

°C

Storage temperature

-20 to +55

°C

Housing color

RAL 7011

YUKARI