Quarter-Bridge Strain Gage - Configuration Type I

Quarter-Bridge Strain Gage Configuration Type I * Measures axial or bending strain. * Requires a passive quarter-bridge completion resistor (R3) known as a dummy resistor. * Requires half-bridge completion resistors (R1, R2) to complete the Wheatstone bridge. * R4 is an active strain gage measuring the tensile strain (+ε) and ranging from 119.5Ω to 120.5Ω in i.e. +/- 2000 um/m for a gage factor k = 2. As described in http://www.ni.com/white-paper/3642/en/