Description Universal Earth Resistance and Resistivity Meter | MRU-30 MRU-30 Specifications Measurement functions Measurement range Display range Resolution Accuracy Interference voltage 0 V…100 V 0 V…100 V 1 V ±(5% m.v. 2 digits) Resistance of earth connection and equipotential bonding 0.13 Ω…1999 Ω acc. to EN 61557-4 0,00 Ω…1999 Ω from 0.01 Ω ±(2% m.v. 3 digits) Earth resistance 2-pole method 0.00 Ω…9999 Ω 0.00 Ω…9999 Ω from 0.01 Ω from ±(3% m.v. 3 digits) 3-pole and 4-wire method 0.53 Ω…9999 Ω acc. to EN 61557-5 0.00…9999 Ω from 0.01 Ω from ±(3% m.v. 3 digits) 3-pole clamp method 0.00 Ω…9999 Ω 0.00 Ω…9999 Ω from 0.01 Ω from ±(3% m.v. 3 digits) two-clamp method 0.00 Ω…99.9 Ω 0.00 Ω…99.9 Ω from 0.01 Ω from ±(10% m.v. 8 digits) auxiliary electrodes resistance 0 Ω…19.9 kΩ 0 Ω…19.9 kΩ from 1 Ω ±(5% (RE RH RS) 8 digits) Earth resistivity 0.0 Ωm…999 kΩm 0.0 Ωm…999 kΩm from 0.1 Ωm Depends on the accuracy of the RE 4p measurement, but not less than ±1 digit Leakage current 0.0 mA…5.00 A 0.0 mA…5.00 A from 0.1 mA from ±(5% m.v. 5 digits) “m.v.” – measured value MRU-30 Pro Specifications Measurement functions Measurement range Display range Resolution Accuracy Interference voltage 0 V…100 V 0 V…100 V 1 V ±(5% m.v. 2 digits) Resistance of earth connection and equipotential bonding 0.13 Ω…1999 Ω acc. to EN 61557-4 0,00 Ω…1999 Ω from 0.01 Ω ±(2% m.v. 3 digits) Earth resistance 2-pole method 0.00 Ω…9999 Ω 0.00 Ω…9999 Ω from 0.01 Ω from ±(3% m.v. 3 digits) 3-pole and 4-wire method 0.53 Ω…9999 Ω acc. to EN 61557-5 0.00…9999 Ω from 0.01 Ω from ±(3% m.v. 3 digits) 3-pole clamp method 0.00 Ω…9999 Ω 0.00 Ω…9999 Ω from 0.01 Ω from ±(3% m.v. 3 digits) two-clamp method 0.00 Ω…99.9 Ω 0.00 Ω…99.9 Ω from 0.01 Ω from ±(10% m.v. 8 digits) auxiliary electrodes resistance 0 Ω…19.9 kΩ 0 Ω…19.9 kΩ from 1 Ω ±(5% (RE RH RS) 8 digits) Earth resistivity 0.0 Ωm…999 kΩm 0.0 Ωm…999 kΩm from 0.1 Ωm Depends on the accuracy of the RE 4p measurement, but not less than ±1 digit Leakage current 0.0 mA…5.00 A 0.0 mA…5.00 A from 0.1 mA from ±(5% m.v. 5 digits) Universal Earth Resistance and Resistivity Meter | MRU-30
