Die Clip-on Extensometer 5025-1, 8040-1 und 7537-1 

The clip-on extensometers 5025-1, 8040-1, and 7537-1 are manual clip-on extensometers that can be attached to the specimen quickly and securely with one hand. These lightweight instruments are highly accurate yet cost efficient solutions for standard tests.

  • Reproducible results are attained through the exact and lockable setting of the initial gauge length.
  • Optimal gripping of round specimens with prismatic counter rollers.
  • For closed loop strain rate control to ISO 6892 Method A1 and determination of the tensile modulus to ISO 527-1 Annex C.
  • High accuracy in temperature chambers through compensation of temperature-related deviations. 
50kN ProLine with Clip-On Extensometer 5025-1

Clip-On Extensometer at a Glance

Advantages and features

  • Excellent linearity for reliable test results.
  • High resolutions enable measurement of very small deformations during test.
  • Lightweight, miniaturized construction, ideal for specimens with small parallel length.
  • Initial gauge length can optionally be reset from 10 to up to 100 mm using extension pieces (does not apply to Type DMS Length 1).
  • Temperature-resistant measurement systems for use from -50°C to +200°C.
  • Extensometers for two-sided measurement of specimen deformation, enabling exact determination of Young's modulus and engineering elastic limit.
  • Variable measurement options are possible on extensometers with 2 separate measurement systems; individual signals or mean-value signal can be displayed.
  • While attached to the specimen the extensometer is prevented by limit stops from exceeding the measurement travel and protected in the event of specimen break (Type DMS Length 1 only).

Description of application

The DMS Length 1 extensometer is intended for fixed gauge-lengths L0 = 25 mm and L0 = 50 mm with a measuring range of 25 mm.

Extensometer types DMS Length 2, DMS Length 3 and DMS Length 4 are intended for fixed gauge-lengths L0 = 20 mm and L0 = 10 mm with a measurement travel of 2 mm in the tensile direction and 1 mm in the compression direction.

The DMS Length 5 is a double-sided clip-on extensometer with measurement systems delivering two individual signals. It is intended for fixed gauge-length L0 = 10 mm with measurement travel of 1.5 mm in the tensile and compression directions.

DMS Length 3, DMS Length 4 and DMS Length 5 are suitable for use in temperature chambers. DMS Length 5 is also suitable for use with HCCF.

Advantages and features of the clip-on family

  • Accuracy Class 0.5 to EN ISO 9513 up to 60% of measurement travel.
  • Clip-on extensometers 5025-1 and 8040-1 are approved for closed-loop strain-rate control to ISO 6892-1 Method A.
  • Convenient one-handed operation allows fast, easy attachment and removal of the clip-on extensometer. This enables trouble-free operation, even in narrow temperature chambers.
  • Cost-effective, high-precision extensometers for determination of strain on metals, rigid plastics and composites.
  • Lightweight construction
  • Accurate, lockable setting of initial gauge length ensures reproducible test results.
  • Suitable for tensile and compression tests

Clip-On Extensometer for metal testing to ISO 6892

The manual clip-on extensometer 5025-1 / 8040-1 are simply attached onto the sample with just one hand. Different measuring lengths, from 50 to 80 mm, can be set and thus enable the extensometer to be used variably. Due to the miniaturized and lightweight construction, the clip-on extensometer can also be used for short specimens. Another great advantage is the Accuracy Class 0.5 to EN ISO 9513 up to 60% of measurement travel.

Clip-On Extensometer: easy and accurate strain measurement for tensile tests on metals to ISO 6892

Technical Overview

Overview

Clip-on extensometers 5025-1, 8040-1 and 7537-1 are manualclip-on extensometers are tailored to tests on rigid plastics and composites to ISO 527 and for tests on metals in closed-loo" strain-rate control according to ISO 6892-1 Method A.

Clip-On 5025-1

Type

Clip-on extensometer 5025-1

Item No.

1034897

Accuracy

up to 60% of measurement travel

Class 0.5 to EN ISO 9513

 

Class 1 to EN ISO 9513

Measuring system

Single-sided strain gauge system

Initial gauge length

 

50

mm

or

2

"

Measurement travel

for tensile

25

mm

for compression

5

mm

Specimen dimensions, max.

Round specimens (Ø)

20

mm

Flat specimens (d x w)

20 x 32

mm

Specimen dimensions, min.

Round specimens (Ø)

1

mm

Flat specimens (d x w)

1 x 1

mm

Ambient temperature

-70 to +200

°C

Scope of delivery

clip-on extensometer 5025-1 and knife-edges for testing metals

Overall height

66

mm

Weight

105

g

Clip-On 8040-1

Type

Clip-on extensometer 8040-1

Item No.

1067159

Accuracy

up to 60% of measurement travel

Class 0.5 to EN ISO 9513

 

Class 1 to EN ISO 9513

Measuring system

Single-sided strain gauge system

Initial gauge length

 

80

mm

or

-

"

Measurement travel

for tensile

40

mm

for compression

5

mm

Specimen dimensions, max.

Round specimens (Ø)

15

mm

Flat specimens (d x w)

15 x 30

mm

Specimen dimensions, min.

Round specimens (Ø)

1

mm

Flat specimens (d x w)

1 x 1

mm

Ambient temperature

-70 to +200

°C

Scope of delivery

clip-on extensometer 8040-1 and knife-edges for testing metals

Overall height

90

mm

Weight

118

g

Clip-On 7537-1

Type

Clip-on extensometer 7537-1

Item No.

1067160

Accuracy

up to 60% of measurement travel

Class 0.5 to EN ISO 9513

 

Class 1 to EN ISO 9513

Measuring system

Single-sided strain gauge system

Initial gauge length

 

75

mm

or

3

"

Measurement travel

for tensile

37.5

mm

for compression

5

mm

Specimen dimensions, max.

Round specimens (Ø)

15

mm

Flat specimens (d x w)

15 x 30

mm

Specimen dimensions, min.

Round specimens (Ø)

1

mm

Flat specimens (d x w)

1 x 1

mm

Ambient temperature

-70 to +200

°C

Scope of delivery

clip-on extensometer 7537-1 and knife-edges for testing plastics

Overall height

85

mm

Weight

118

g

Top