Model 3575 Transverse (Diametral) Extensometer - Epsilon Technology - #1

Technology Corp

• May be left on through specimen failure.

• Full bridge, 350 ohm strain gaged design for compatibility with nearly any test system.

• 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.

• Includes high quality foam lined case and spare set of tool steel knife edges.

• Rugged, dual flexure design for strength and improved performance. Much stronger than single flexure designs, this also allows cyclic testing at higher frequencies.

• Easy to mount, with integral springs to keep the extensometer on the sample.

• Self-supporting on the specimen

Model 3575 Available Versions: ANY combination of measuring range and temperature range listed below is available.

Self-supporting on the test sample, these extensometers will work on any width or diameter specimen from 0 to 1 inch (25 mm). They are commonly used for measurement of Poisson's ratio, for transverse measurements with anisotropic materials like many composites and for sheet metal testing such as r-value determination. Most often they are used simultaneously with Epsilon's axial extensometers.

These units easily clip onto the sample, held in place with an integral spring. Rounded contact edges maintain the position on the specimen. All are high accuracy strain gaged units, compatible with most test controllers.

Excitation: 5 to 10 VDC recommended, 12 VDC or VAC max.

Output: 2 to 4 mV/V, depending on model Linearity: <0.15% of full scale measuring range, depending on model

Temperature Range: Standard (-ST) is -40 °C to +100 °C (-40 °F to 210 °F) Cable: Integral, ultra-flexible cable, 8 ft (2.5 m) standard Specimen Size: Works with samples up to 1 inch (25 mm) width or diameter

Connectors to interface to nearly any brand test equipment Shunt calibration module (see page 96) Specialty knife edges (see page 97)

As shown in the photo, the Model 3575 may be used simultaneously with the Model 3542 axial extensometer to measure r-value. Many researchers are now using only this single lateral measurement for their tests, rather than the older method using three manual measurements.

An alternative unit with dual lateral measurements is the Model 3575AVG, which averages transverse readings over two locations. (See page 38.)

[63.8] 2.51

[92.7]

3.65

ADJUSTABLE

[63.8] 2.51

3575 WITH ±5 MM MEASURING RANGE

ADJUSTABLE

MOST MODEL 3575 VERSIONS

DIMENSIONS: [mm] inches