Date：2019-05-31View：

Install the strain gauge onto the test sample which is free of outside force and restriction. Its indication strain changes when the temperature changes,which is called heat output.Heat output is the resulf of linear expansion coefficient difference synergy between resistance temperature coefficient,sensitive bar material and the test sample material. The ordinary strain gauges’s hot output is often very high, hot output is the biggest erroneous source during static strain testing, and hot heat dispersion increases when heat output increasra, this discreoancy is even bigger gradient or transient appears in the testing environment. Thus the ideal strain gauge shall be called temperature self-retrieve strain gauge.

To achieve this, internal crystal strucutre reformed through adjustment of the alloy ingredient allocating proportion of the strain gauge sensitive bar and proper heat treatment, to change hte resistance temperature coefficient to make the heat output value as close as zero, thus realizing its self-retrieve function for elastomer or test sample, meeting the production requirment of high accuracy stress analysis and the sensor.

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