Extensometers

Extensometers are used to accurately measure specimen extension during testing. An extensometer attaches to the test specimen with spring loaded knife edges. Specifications for extensometers include gage length, which is the distance between the knife edges at the start of the test and percent travel during test. Non contacting extensometers are also available.

EX-900CT
Balanced Long Travel Extensometer Testing Travel – 1200mm (47") Specimen Thickness - 0.2 to 4.0mm (0.008" to 0.16") Gage Length - Adjustable between 20 to 80mm (0.79" to 3.15") Resolution - 0.25mm (0.001")
EX-3542
Available Gauge Lengths: 0.5", 0.64", 1.0", 10mm, 12.5mm, 25mm Extension: +/- 5, 10 , 20, 25%, +50%/- 10%, and +100%/-5% Meets existing ASTM class B-1 and ISO 9513,class 0,5 requirements for accuracy. Excitation: 5 to 10 VDC recommended, 12 VDC or VAC max. Output: 2 to 4 mV/V, nominal, depending on model Linearity: 0.10% to 0.15% of full scale measuring range, depending on model
EX-3543
4 inch (100mm) gage length Travel: 2 (50mm) or 4 (100mm) inches Includes quick attach kit and various knife edges for flat and round specimens May be left on through specimen failure. The unit is designed so that the two halves of the extensometer come apart to prevent damage at specimen failure. Full bridge, 350 ohm strain gaged design for compatibility with nearly any test system. All standard units meet existing ASTM class B-1 and ISO 9513, class 0,5 requirements for accuracy. Hardened tool steel knife edges are easily replaced. A spare set comes with every extensometer. Excitation: 5 to 10 VDC recommended, 12 VDC or VAC max. Output: 2 to 4 mV/V nominal, depending on model Linearity: 0.15% of full scale measuring range
EX-3475
0 to 1 inch diameter/width specimen sizes Travel: +/- 0.02", +/- 0.05", +/-0.1" Self supporting on sample Mounts directly to sample with integral clip springs May be left on through specimen failure. All models will measure both positive and negative displacements. All standard units meet existing ASTM class B-1 and ISO 9513, class 0,5 requirements for accuracy. Linearity: 0.15% of full scale measuring range

Customers should contact ADMET for more information, to order products or to discuss special needs with an ADMET engineer. Please call 800-667-3220, email OR click on the Ask an Engineer button to submit your information request.