Electronic Extensionmeters

Electronic Extensionmeters

This instrument is to be used on Tensile or Universal testing machines to find out

Proof stress & Young’s modulus values.In case of many brittle materials such

as high carbon steels, alloy steels, light aluminium & magnesium alloys, it is

difficult to get yield values. For such materials stress corresponding to a certain

allowable amount of plastic deformation is termed as proof stress say 0.1% or

0.2% proof stress. The measuring range is upto 5mm & resolution is 0.001mm.

Standard two fixed gauge lengths of 25 & 50 mm is provided. Different sizes

gauge lengths can also be given at an additional cost. If this extensometer is

ordered with a computerized UTM, then a special menu driven application

software is provided, which accepts load & extension values, & evaluates

proof stress values. The measurement accuracy satisfies all requirements

of class-I as per IS:12872-1990.