MODEL

3542 L

Long Gage Length Small Range Axial Extensometers

Epsilon

Technology Corp

Long gage length extensometers with gage lengthsgreater than 2 inches (50 mm) for tensile and compression testing.These units have been specially designed for long gage length applications where low level strain measurements are required. Features O

RDERING

I

NFORMATION •

May be left on through specimen failure.

Model 3542L Available Versions: ANY combination of gage length, measuring range andtemperature range listed below is available, except as noted. Larger gage lengths areavailable on special order. •

Full industrial 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. -0400 4.000”

See the electronics section of this catalog for available signal conditioners.

-0600 6.000”
Measuring Range DESIGNATION •

Mechanical overtravel stops in both directions.

-0800 8.000” -1000 10.000” -010T ±0.10”
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All units meet existing ASTM class B-1 and ISO 9513, class 0,5 requirements for accuracy.

-2000 20.000” -025T ±0.25” -050T ±0.50”
METRIC METRIC •

Hardened tool steel knife edges are easily replaced. A spare set comes with every extensometer.

-100M 100 mm -150M 150 mm -002M ±2.5 mm
3542L with 8 inch gage length and ±0.4 inches measuring range. -200M 200 mm -006M ±6.0 mm
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High and low temperature options extend operation from as low as -265 °C (-450 °F) to +175 °C (350 °F).

-250M 250 mm -012M ±12.5 mm

The dual flexure design makes the 3542L very rugged andinsensitive to vibrations. These extensometers are designed for testing a wide range of materials, including metals, plastics, composites and ceramics. Epsilon’s Model 3543 is recommended for applications requiring long gage lengths and larger measuring ranges.The Model 3542L comes standard with Epsilon’s quickattach kit, making it easy to mount the extensometer on the test specimen. The quick attach kit can be removed, allowing mounting of the extensometer with springs or rubber bands. The 3542L extensometers are strain gaged devices, makingthem 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 machinecontroller or may often be added. In this case the extenso-meter 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 solu- tions, allowing the extensometer output to be connected to data acquisition boards, chart industrial recorders or other equipment.

-500M 500 mm
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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. Model Number 3542L-________-______-____

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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.

Temperature Range -LT -265 °C to 100 °C (-450 °F to 210 °F) -ST -40 °C to 100 °C (-40 °F to 210 °F)
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Standard quick attach kit allows quick mounting to specimens.

-HT1 -40 °C to 150 °C (-40 °F to 300 °F) -HT2 -40 °C to 175 °C (-40 °F to 350 °F)
1 1 S PECIFICATIONS -LHT -265 ËšC to 175ËšC (-450 ËšF to 350ËšF)
Excitation: 5 to 10 VDC recommended, 12 VDC or VAC max. 1 Output: 2 to 4 mV/V, nominal , depending on model Short term use to 200 °C (400 °F) acceptable. Linearity: 0.10% to 0.15% of full scale measuring range, depending on model Example: 3542L-0800-050T-ST: 8.000 inch gage length,±0.50 inches measuring range, standard temperature option (-40 °F to 210 °F) 3542L with 500 mm gagelength and ±10 mm measuring range. 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 Standard QuickAttach Kit: 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) Operating Force: Depends on model configuration, less than 30 g typically O PTIONS 3442L in foam lined storage case (included). Quick attach kit wire forms for large specimens Connectors to interface to nearly any brand test equipment Shunt calibration module (see page 96) Adapter kits to change gage lengths Specialty knife edges (see page 97) Contact Epsilon for your special testing requirements. 12 13