The extensometer come standard with a freestanding sensor conditioner unit providing a electric calibration 0-10 V signal output with exceptionally low noise that can be connected to the strain channel of the controller of the testing system. This conditioner system provides a number of functional enhancements, including high speed digital output, built in calibration and tare functions, analogue and digital filters, and more.

The application range includes:

• Tension

• Compression

• Low Cycle Fatigue

• Thermo Mechanical Fatigue

• Through Zero Fatigue

• Cyclic tests up to 100 Hz

• Strain-controlled Testing

Features

• Can be left on through specimen failure

• Improved performance at high temperature.

• Standard configurations meet ISO 9513 class 0,5 and ASTM E83 class B-1 requirements for accuracy.

• Cyclic Testing >25 Hz typical, up to 100 Hz with small travel units, @ 0.5 mm p-p

• Reduced size and weight, and improved high frequency performance up to 100 Hz.

• Improved noise rejection.

• Conditioner and power supply included. Provides high level DC voltage output with low noise. Easily interfaced to test controllers, data acquisition boards and chart recorders.
  - Includes high speed analogue and digital outputs
  - Intuitive web-based user interface for setup, calibration, and data acquisition
  - Built-in calibration reference and auto-zero features
  - Multiple extensometer calibration files may be loaded for use with one controller
  - Multiple temperature-specific calibrations may be stored
  - Selectable analog and digital filter options from 2 Hz to 3 kHz

• Ships fully calibrated with electronics with user specified voltage output (traceable to NPL).

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

• Mechanical over-travel stops.

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

• Rugged, dual flexure design for strength and improved performance. Much stronger than single flexure designs, this also allows cyclic testing at higher frequencies.

• Analog Output: User specified, ±5 VDC or ±10VDC typical, ±10.8VDC rail

• Digital Output: 24 bit high speed Ethernet output with built-in web interface

• Linearity: 11 point linearization, ≤0.1% FS typical linearity

• Resolution: <55 PPM (0.006%FS) RMS @ 4 kHz, <6 PPM (0.0006%FS) @ 100 Hz

• Analog Filter: Selectable 100 Hz analog and 2 Hz – 3 kHz digital filters

• Temperature Range: Ambient to 700 °C (1300 °F). Use up to 800 °C is possible – contact Epsilon for details. Wire forms may require periodic adjustment or replacement after long-term testing above ~600 °C.

• Temperature Sensitivity (Gain): <100 PPM / °C (0.01%FS/°C) typical

• Temperature Sensitivity (Offset): 20 PPM / °C (0.002%FS/°C) typical

• Sensor Cable: 0.7 m (2.5 ft) tri-axial high temperature cable, plus 1.5 m (5 ft) room temperature extension cable

• Standard Quick Attach Kit: Fits round samples up to Ø15 mm (0.60"). Fits flat samples up to 50 mm (2.0") wide with thicknesses up to 6.35 mm (0.25"), and up to 19 mm (0.75") wide with thicknesses from 6.35 mm (0.25") to 12.5 mm (0.50").

• Operating Force: <100 g typical

• Environment: Recommended for elevated temperature testing in dry air or inert / non-corrosive gases