Description

The Electronic Extensometer FEE-5 is designed for determination of proof stress, Young’s Modulus and strain values during tensile testing. It measures the correct strain values within the gauge length marks accurately.

For ductile materials, the stress–strain curve is well defined and the yield point appears clearly. For certain materials (high carbon steels, aluminium alloys, magnesium alloys), the straight portion of the curve gradually merges into the plastic region, making it difficult to determine the yield point manually. FEE-5 helps in obtaining accurate proof stress values.

FEE-5 meets all requirements of IS-12872:1990, ISO-9513:1989, and ASTM-E83 Class B2. It is suitable for all metals and ensures highly reliable and consistent measurements.

Key Features

• Accurate measurement of Young’s modulus & proof stress.
• Suitable for determining 0.1% to 1.0% proof stress values.
• Reliable operation even under elevated temperature conditions.
• High mechanical stability with low-resistance strain gauge construction.

Technical Specifications

Accuracy	Class 1 as per IS 12872 / ISO 9513
Type	Strain Gauge Type
Output	0.3 mV / V / mm (Approx)
Excitation	10V DC Nominal
Measuring Range	5 mm
Nominal Resistance	350 Ohms
Gauge Lengths	25 mm & 50 mm (Fixed G.L.)
Resolution	0.001 mm

Extensometer Calibration

• Calibrated using FASNE calibrator equipped with Baker Digital Dial Gauge.
• Additional calibrator accessories available on request.

Optional Digital Indicator & Software

• Optional 1-micron resolution Digital Indicator available.
• Used with electronic UTM for full automatic evaluation of stress–strain parameters.
• Provides 0.1% or 0.2% proof stress values automatically.
• Printable test reports (graph + data) available.