4120ER 3 WIRE DIGITAL EARTH RESISTANCE TESTER

Description

● Capable of measuring earth resistance and earth voltage.
● 2mA measuring current permits the testing of earth resistance without
tripping earth leakage current breakers in the circuit under test.
● The test leads are supplied as standard accessories for simplified
two-wire measuring system.
● Battery operated.
● Data hold function.
● Battery test indication.
● Calibration performed with supplied test leads.

Measuring ranges	Earth resistance 0-20Ω / 0-200Ω / 0-2000Ω Earth voltage 0-200 Vac(40-500Hz)
Accuracy	Earth resistance ±(2%rdg+2dgt) at 200/2000Ω ±(2%rdg+0.1Ω) at 20Ω Earth voltage  ±(1%rdg+2dgt)
Earth resistance resolution	0-20Ω : 0.01Ω 0-200Ω : 0.1Ω 0-2000Ω : 1Ω
Measuring system	Earth Resistance by constant current inverter 820Hz approx. 2mA
Display	3½ digit (2000 counts)
Open circuit indication	LED will be unlit
Low battery indication	“   “symbol appears  on the display
Data hold indication	“   “symbol appears on the display
Over range indication	“1”(MSD)
Dimensions	250(L) × 190(W) × 110(D)mm
Weight (battery included)	Approx. 1500g
Power source	1.5V (AA) × 8
Safety standards	EN 61010-1 CAT III 300V IEC 61557-1 IEC 61557-5 EN 61326-1