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MODEL

Model 3741 Air Cooled Fracture Mechanics Clip-On Gages - 33099 3741

Air-Cooled Fracture Mechanics Clip-On Gages

Epsilon

Technology Corp

Air-cooled clip-on gage designed for fracture mechanicstesting in a temperature range of -195 °C to 300 °C (-321 °F to 572 °F).These extensometers are semi-custom units built to the customer’s specifications.

Features

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

See theelectronics section for available signal conditioners.

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Fully enclosed gages to protect from accidental damage.

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All standard units meet existing ASTM requirements for accuracy.

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Sharp grooves per ASTM E1820, E813, and E399 for improved stability when mounted.

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Includes high quality foam lined case.

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All capable of high frequency operation (20 Hz or faster, depending on version).

Model 3741 with 5 mm gage length and 2 mm measuring range. S PECIFICATIONS

These air-cooled clip-on gages conform to the requirementsof ASTM E399 for fracture toughness and E1820 and E813 for J

Excitation: 5 to 10 VDC recommended, 12 VDC or VAC max. Output: 2 to 4 mV/V, nominal , depending on model
IC

and R-curve determination. In addition, the modifiedgroove design complies with E1820 tests where greater stability and accuracy results from the sharper groove root. Clip-on gages are used for a variety of fracture mechanics testing, using compact tension, arc shaped, disk shaped, bend specimens or other specimen geometries in compliance with ASTM and other standards organization’s test methods. These units are air-cooled for elevated temperature use. A supply of dry air or inert gas must be available at approxi- mately 2-2.75 bars (30-40 psi). For low temperature testing, no cooling is used.The Model 3741 clip-on gages 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 usually present or may often be added. In this case the extensometer is shipped with the proper connector and wiring to directly plug 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.

Linearity: 0.15% for measuring ranges less than 0.25 inch (6 mm), 0.20% for greater measuring ranges Temperature Range: Standard is -195 ° C to +300 ° C (-321 °F to 572 °F) Cable: High temperature cable, including air cooling hoses Operating Force: Exerts 2 to 3 lbs (9 to 14 N), depending on model
O PTIONS Connectors to interface to nearly any brand test equipmentShunt calibration module (see page 96) Bolt-on knife edges
26.71.051.54392.0752.5 Contact Epsilon for your special testing requirements. 3741 WITH 5 MM GAGE LENGTH AND2 MM MEASURING RANGE DIMENSIONS:[mm] inches

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