Four Probe Method

Block Diagram of Four-Probe Apparatus for Precise Material Testing Ideal for accurate measurement of electrical properties. Consists of the following :(a) Four Probe Setup, Model DFP -02 Constant Current Generator Open Circuit Voltage : 18V Current Range : 0-20mA Resolution : 10μA Accuracy : ±0.25% of the reading ± digit Display : 3½ digit, 7 segment LED (12.5mm) height Load Regulation : 0.03% for no load to full load. Line Regulation : 0.05% for ±10% of mains changes.