Free PDF ebooks (user's guide, manuals, sheets) about Nilsson 400 ready for download.This book reports on cutting-edge research on social and occupational ergonomics, presenting innovative contributions to the optimization of sociotechnical management systems related to organizational, policy, and logistical issues. Find best value and selection for your NILSSON MODEL 400 4 PIN SOIL RESISTANCE METER search on eBay. Nilsson model 400 soil resistance meter.pdf - Read more about meter, nilsson, resistance, soil, corrpro and resistivity. INTRODUCTION This manual covers the use, operation and maintenance of the following meter: Model M3A1 (Series 3), Standard (Zero 10% Up-Scale Instruments). Large ohm adjustments are accomplished through a range switch, which permits resistance levels from 0.01 ohm to 1.1 megohm. This causes a null indicator needle to swing either left or right of center to let the operator know if the present ohm setting is either too high or too low. The testing procedure is initiated by pressing an operator key on the meter. Because this current is supplied at 97 Hz, which is a very irregular electrical frequency, the meter is insensitive to AC or DC ground currents, which can distort resistance measurements. To determine electrical resistance, the meter induces alternating current into the soil. The Nilsson 400 is manufactured with solidstate integrated circuitry. The Nilsson 400 meter is a testing instrument designed specifically for measuring soil resistance.ĭeveloped around the Wernner fourpin method, it obtains accurate resistance readings, which can be used to calculate soil resistivity. The higher the resistivity, the less conductive the soil and vice versa. It informs the corrosion engineer or technician about a soil's ability to transfer electrical current. Nilsson model 400 soil resistance meter.pdf - TEST INSTRUMENTS corrpro ® Nilsson Model 400 Soil Resistance Meter For Accurately Determining Resistivity Soil resistivity is a value that is important for designing and testing cathodic protection systems.
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