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MODEL

Model 3542 Axial Extensometer - 33099 3542

Axial Extensometers Epsilon

Technology Corp

General purpose extensometers for axial tensile,compression and cyclic testing.Gage lengths from 0.5 to 2 inches (and 10 to 50 mm) and measuring ranges from 5% to 100% strain.

Features O

RDERING

I

NFORMATION •

May be left on through specimen failure.

Model 3542 Available Versions: ANY combination of gage length, measuring range andtemperature range listed below is available, except as noted.

See the electronics section of this catalog foravailable signal conditioners and strain meters.

Available in intermediategage lengths on special order. •

Full bridge, 350 ohm strain gaged design for compatibility with nearly anytest system.

Gage Length •

All models can measure in both tension and compression and can be used for cyclic testing.

U.S.A. -0050 0.500”
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Mechanical overtravel stops in both directions.

-0064 0.640”
Measuring Range -0100 1.000”
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All standard units meet existing ASTM class B-1 and ISO 9513, class 0,5 requirements for accuracy.

-0140 1.400”
1 % STRAINLINEARITY -0200 2.000” -005 ±5% -010 ±10%0.10%
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Hardened tool steel knife edges are easily replaced. A spare set comes with every extensometer.

METRIC -020 ±20% -010M 10.0 mm -025 ±25%
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High and low temperature options extend operation from as low as -265 °C (-450 °F) to +175 °C (350 °F).

-012M 12.5 mm -050
2 ±50%/-10%0.15%
3542 with a 50 mm gage length and ±5% measuring range. 3542 with compositescompression fixture for ASTM D695. -025M 25.0 mm -100 +100%/-5% -050M 50.0 mm

These extensometers are designed for testing a wide range ofmaterials, including metals, plastics, composites and ceramics. All will work in both tension and compression. The dual flexure design makes them very rugged and insensitive to vibrations, which permits higher frequency operation. They come standard with Epsilon’s quick attach kit,making it easy to mount the extensometer on the test speci- men in seconds with one hand. The quick attach kit can be removed, allowing mounting of the extensometer with springs or rubber bands.The Model 3542 extensometers are strain gaged devices,making them compatible with any electronics designed for strain gaged transducers. Most often they are connected to a test machine controller. The signal conditioning electronics for the extensometer is typically included with the test machine controller or may often be added. In this case the extensometer is shipped with the proper connector and wiring to plug directly into the electronics. For systems lacking the required electronics, Epsilon can provide a variety of solutions, allowing the extensometer output to be connected to data acquisition boards, chart recorders or other equipment.

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Includes high quality foam lined case.

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Replaceable arms and spacers for ease of repair. This also allows changing the gage length for different test requirements.

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Rugged, dual flexure design for strength and improved performance. Much stronger than single flexure designs, this also allows cyclic testing at higher frequencies. Model Number 3542-________-______-____

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Standard quick attach kit allows one hand mounting to specimens.

Temperature Range • -LT -265 °C to 100 °C (-450 °F to 210 °F)
S PECIFICATIONS -ST -40 °C to 100 °C (-40 °F to 210 °F)
Excitation: 5 to 10 VDC recommended, 12 VDC or VAC max. -HT1 -40 °C to 150 °C (-40 °F to 300 °F)
3542 with a 2” gage length and ±25% measuring range. 3542 axial model used simultaneouslywith a 3575 transverse model. -HT2 -40 °C to 175 °C (-40 °F to 350 °F)
3 Output: 2 to 4 mV/V, nominal , depending on model -LHT -265 ËšC to 175ËšC (-450 ËšF to 350ËšF)
3 Linearity: 0.10% to 0.15% of full scale measuring range, depending on model 1 Temperature Range: Standard (-ST) is -40 ° C to +100 ° C (-40°F to 210°F) Not available in one-half inch, 10 or 12.5 mm gage lengths. 2 Cable: Integral, ultra-flexible cable, 8 ft (2.5 m) standard For 2 inch and 50 mm gage lengths, linearity is 0.2% typical, (ASTM class B-2). Standard QuickAttach Kit: 3 Short term use to 200 °C (400 °F) acceptable. Fits round samples up to 1.0 inch diameter (25 mm) andflats to 0.5 inch thick by 1.25 inch wide (12 mm by 31 mm) Example: 3542-0100-020-LT: 1.000 inch gage length,±20% measuring range, low temperature option (-450 °F to 210 °F) Operating Force: 30 g typical O PTIONS Contact Epsilon for your special testing requirements. Quick attach kit wire forms for large specimensConnectors to interface to nearly any brand test equipmentShunt calibration module (see page 96)Adapter kits to change gage lengths Specialty knife edges (see page 97) 40.61.60.7518.9[ 84.3 to 211 ]3.32 to 8.32gage length[ 10 mm ].500 inch 18.9.75662.60[ 97 to 211.3 ]3.82 to 8.32gage length[ 50 mm ]2 inch 3542 with 10 mm gage length and ±10% measuring range. Rubber Band and Spring Attach Options

See also the Model 3442Miniature Extensometer

3542 LOW MEASURING RANGE 3542 HIGH MEASURING RANGE3542 MEDIUM MEASURING RANGE Extensometers for CompositesCompression Testing

Models 3542 and 3442 extensometerscan be furnished to clip directly onto composites compression fixtures, such as for ASTM D695. These use specially made quick attach kit wire forms for the customer’s fixture. Consult the factory for specifics.

18.9.7540.61.60[ 97 to 211.3 ]3.82 to 8.32 gage length[ 50 mm ]1 inch Using springs (included).Using rubber bands (included).

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Standard Quick Attach Wire Forms (Included) 3542 with 2” gage length and +50/-10% measuring range.3542 with 25 mm gage lengthand ±10% measuring range. DIMENSIONS:[mm] inches . 10
For round samples.For flat samples. 11