Strain gauge with high sensitivity - produced by coating substrate with thick film resistor paste contg. organic matrix and graphite or silver particles

摘要

Strain gauge has a thick film paste applied to a substrate subjected to mechanical deformation and after treated to form an effective resistor. This paste pref. contains an organic matrix (I) for adhesion and cohesion, electrically conductive pigment particles (II) and a viscosity modifier (III). (I) is isophthalic acid and/or styrene; (II) Ag and/or graphite; and (III) alpha-terpineol, ethylcellulose and/or benzyl alcohol. The strain gauge can be mfd. easily and is much more sensitive than usual, K values between 4 and 10 being readily attainable.