• Can remain operational through specimen failure.
• Full bridge, 350 ohm strain gaged design compatible with most test systems.
• Meets ASTM class B-1 and ISO 9513, class 0.5 accuracy standards.
• Includes spare quartz rods, a universal water-cooled mounting bracket, and a foam-lined storage case.
• Rugged dual flexure design for enhanced strength and performance, suitable for cyclic testing at higher frequencies.
• Available versions for vacuum environments.

• Excitation: 5 to 10 VDC recommended, 12 VDC or VAC max.
• Output: 2 to 4 mV/V nominal, model-dependent.
• Linearity: ≤0.15% of full scale measuring range, model-dependent.
• Temperature Range: -40 °C to +1000 °C (-40 °F to 1832 °F).
• Cable: 8 ft (2.5 m) ultra-flexible cable.
• Specimen Size: Compatible with 0.18 to 0.63 inch diameters (4.5 to 16 mm).
• Contact Force: Adjustable, 100 to 300 g typical.

• Connectors for various test equipment brands.
• Shunt calibration module.
• Special rods for large specimens.
• Model 2050 constant temperature water re-circulating bath.

• Model 3580 available in various versions with quartz rod lengths tailored to furnace dimensions.
• Designations include different measuring ranges, e.g., -020T ±0.020”, -030T ±0.030”, etc.

The Model 3580 extensometers are designed for high-temperature diametral strain measurements, compatible with furnaces and induction heating systems. They feature a dual flexure design and can be used with or without water-cooling depending on the heating method. The extensometers are strain gaged, making them compatible with electronics for strain gaged transducers, often connecting to test machine controllers. Epsilon provides solutions for systems lacking required electronics.

This bath maintains controlled temperature flow for water-cooled extensometers, capable of cooling or heating water with a stability of 0.1 ˚C, ensuring maximum stability for water-cooled extensometers.