Bridge Excitation Levels for Strain Measurement

In this iNotes Video Presentation, Keval explains how material heat sink properties and strain gage resistance together form a limit to maximum useful bridge excitation voltage.  Having the the maximum excitation voltage applied to a strain gage is almost always advantageous since it produces the best possible signal-to-noise ratio.  Another variable to consider is the size of the strain gage, or rather, the surface area in contact with the test materal.  For more information on this topic, consult Micro-Measurements Tech Note TN-502, or contact an Applications Engineer, Technical Sales Manager, or independent Sales Representative at  We are pleased to help with your application questions.