SEW 4235 ER 4 Wire Earth Resistance & Resistivity Tester

SEW 4235 ER 4 Wire Earth Resistance & Resistivity Tester FEATURES • Microprocessor-controlled. • Earth resistivity ( Á ) test. • Earth testing at 20© , 200© , 2k© . • Earth voltage measuring : 0-300V AC. • Automatic C spike check. • Automatic P spike check. • 2-Wire test, 3-Wire test, 4-Wire test. • LCM display. • Auto ranging. • Auto power OFF. • Data hold. • 200 measurement results can be saved in the memory and recalled on the display. • Interval between auxiliary earth spikes is 1.0~ 50.0m. SPECIFICATIONS Measuring ranges • Earth Resistance : 0-20& / 0-200& / 0-2k& • Earth Voltage : 0-300.0V AC • Earth Resistivity ( Á = 2 × À × L × R) • 0.06~ 6.28k© .m • 0.62~ 62.8k© .m • 6.28~ 628k© .m Accuracy • Earth Resistance ± 2% rdg ± 3dgt • Earth Voltage ± 2% rdg ± 3dgt Earth resistance resolution • 0-20& : 0.01& • 0-200& : 0.1& • 0-2k& : 1& Measuring system • Earth resistance by constant current • Inverter 820Hz approx. 2mA Temperature & humidity • Operating: 0° C~ 40° C d80% R.H. • Storage: -10° C~ 50° C d80% R.H. Dimensions : 250( L) x 190( W) x 110( D) mm Weight ( battery included) : Approx. 1430g Power source : 1.5V ( AA) × 8 Safety standards • EN 61010-1 CAT IV 300V • IEC 61557-1 IEC 61557-5 • EN 61326-1