Strain Gauge Extensometers0 pages

TD-2006

Strain Gage Extensometers
Extensometers measure strain, the change
in length of a specimen divided by the
original length (gauge length) of the
specimen. An extensometer measures
strain by means of knife edges which
contact the sample. This series of
extensometer comprises strain gaged
devices
The models in this series of extensometer
can be used to measure either longitudinal
or transverse strain, or can be used in
combination for determining ‘r’-value and
Poisson’s ratio.
Key advantages of using strain gage type
extensometers are as follows:
- Can be left on specimen through failure
- Lightweight to minimize any influence on
the test
- Low operating force
- Rugged construction to withstand rigors
of operation.
SG Models - English Units
Model

Measuring
Gage Length
Range

Direction

SG-20%-2

20%

2in

Longitudinal

SG-20%-1.4

20%

1.4in

Longitudinal

SG-20%-1

20%

1in

Longitudinal

SG-20%-0.5

20%

0.5in

Longitudinal

SG-50%-2

50%

2in

Longitudinal

+/- 0.1in

0 to 1in

Transverse

SGT-10%-1

SGM Models - Metric Units
Model

Measuring
Gage Length
Range

Direction

SGM-20%-50

20%

50mm

Longitudinal

SGM-20%-25

20%

25mm

Longitudinal

SGM-20%-80

20%

80mm

Longitudinal

SGM-50%-80

50%

80mm

Longitudinal

SGM-50%-50

50%

50mm

Longitudinal

SGM-100%-50

100%

50mm

Longitudinal

SGMT-10%-25

+/-2.5mm

0 to 25mm

Transverse