LONG TRAVEL EXTENSOMETERS The Instron® 2603 Series longtravel extensometer is a precise device for measuring strain in highly extensible materials such as elastomers, semi-rigid plastics, and films. Designed for use with electromechanical testing instruments, the long travel extensometer can be used to measure specimens elongations up to 250 mm (10 in). An optional version of 750 mm (30 in) travel is also available providing strain values of up to 7500% (10 mm gauge length).
Safety Advice 1
Review safety note on page 234
2
Principle of Operation The high-elongation extensometer is designed to clamp directly onto to a specimen quickly and easily. It will adjust to incremental gauge lengths ranging from 10 mm to 200 mm (0.5 in to 5 in). The XL will accommodate up to 10 in of clamp displacement, and is specifically designed to permit testing the sample through rupture without damaging the extensometer or otherwise disrupting the test routine. The XL extensometer is based on a pair of carefully counterbalanced clamp assemblies that drive a potentiometer through connecting cables. Both clamps move freely, but any increase in the separation or differential motion will advance the transducer. The upper and lower specimen clamps are separately counterbalanced and guided on a polished and ground shaft with linear bearings so that none of the extensometer’s weight is applied to the specimen.
Application Range • Elastomeric testing • Plastics testing • Testing of materials having high elongation properties • Cellular materials LONG TRAVEL EXTENSOMETERS Catalog Number
Gauge Length mm
in
Travel (Axial)
Specimen Width
Specimen Thickness
Temperature Rating Rated
Accessory Height mm
mm
in
mm
in
mm
in
°C
°F
Notes
in
1
2603-084
10, 20, 25, 50, 100, 200
0.5, 1, 2, 5 250
10
0 - 20
0 - 0.75
0 - 12.7
0.5
+10 to +40
+50 to +100 1125 44.3
For single column systems
2
2603-080
10, 20, 25, 50, 100, 200
0.5, 1, 2, 5 250
10
0 - 20
0 - 0.75
0 - 12.7
0.5
+10 to +40
+50 to +100 1125 44.3
For dual column systems
2603-086
10, 20, 25, 50, 100, 200
0.5, 1, 2, 5
750
30
0 - 20
0 - 0.75
0 - 12.7
0.5
+10 to +40
+50 to +100 1260
49.6
For single column systems (except XX42)
2603-085
10, 20, 25, 50, 100, 200
0.5, 1, 2, 5
750
30
0 - 20
0 - 0.75
0 - 12.7
0.5
+10 to +40
+50 to +100 1260
49.6
For dual column systems (Up to 250 kN)
www.instron.com/accessories 110
