MODEL 3580 High Temperature
Diametral Extensometers (1000 °C)

For transverse or diametral strain measurements at temperatures to 1000 °C (1832 °F). These extensometers may be used with furnaces having a side entry slot for an extensometer or with induction heating systems. They utilize a proprietary, rugged dual flexure design.

This model is for diametral strain measurement with furnace and induction heating systems. Quartz rods and water-cooling allow the unit to be used for high temperature testing of metals, ceramics and composites. With induction heating, this model often can be used without water-cooling.

When used in furnaces, the extensometer is often mounted directly to the furnace side cut-out. Optional load frame mounting brackets are available for supporting the extensometer in cases where furnace mounting is not possible. These optional mounts are used with induction heating or furnace systems.

The Model 3580 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.

Features

• May be left on through specimen failure.
• Full bridge, 350 ohm strain gaged design for compatibility with nearly any test system.
• All standard units have linearity readings of 0.15% or better.
• Each unit comes with a spare set of quartz rods, universal water-cooled mounting bracket and a foam lined storage case.
• Rugged, dual flexure design for strength and improved performance. Much stronger than single flexure designs, this also allows cyclic testing at higher frequencies.
• Versions available for use in vacuum environments (consult factory).
• Special rods are available for 1200 °C temperature testing or
  1000 °C creep testing.

 

Model 3580 Available Versions: ANY combination of measuring range and temperature range listed below is available. Other configurations may be available with special order; please contact Epsilon to discuss your requirements.

  CERTIFIED

Specifications

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, depending on model
Temperature Range: Standard is -40 °C to +1000 °C (-40 °F to 1832 °F)
Cable: Integral, ultra-flexible cable, 8 ft (2.5 m) standard
Specimen Size: Works with samples 0.18 to 0.63 inch diameters (4.5 to 16 mm)
Contact Force: Adjustable, 100 to 300 g typical

Options

• Model 2050 constant temperature water re-circulating bath
• Connectors to interface to nearly any brand test equipment
• Special rods are available for large specimens
• Special rods are available for 1200 °C temperature testing
  or 1000 °C creep testing.

 

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