How to Measure Resistance
Napson is the only vendor in the world, who manufactures and sells 2 kinds of resistance measurement equipment. Contact types with 4-point probe and Non-contact types, such as eddy current measurement. Here are the electrical resistance principles which can be measured by Napson resistance measurement systems. The definition of resistance measurement Generally, electrical resistance (Resistance) is used as evaluation of the conductivity (Ease of electric conductance) of a substance or material. “As a valuation basis of electrical resistance, the unit Ω(ohm)is used.” Electric Resistance ＝ Ω (Ohm) R= V/I *V= Voltage I= Current The insulation resistance, for example, measured by a digital multi-meter (insulation resistance tester) is denoted by the unit, ohm. The electrical resistance for a semiconductor or thin film measurement is defined by standards, such as SEMI (ASTM) and JIS.
