Digital Ground Resistance Tester HT2571

Digital Ground Resistance Tester Model: HT2571 Instrument: digital ground resistance tester for electric power, telecommunications, railways, and industrial and mining enterprises and other sectors of various measuring devices grounding resistance value. At the same time, measure soil resistivity and ground voltage. Product Features: The structure of high-strength aluminum alloy as the chassis, the circuit in order to prevent power frequency, radio frequency interference detection method using a phase locked loop synchronous tracking and with the switched capacitor filter so that the instrument has good anti-jamming capability. Using DC / AC conversion technology DC constant current into alternating bass for the measurement. Allow auxiliary grounding resistance 0 ~ 1.8KΩ (RC), 0 ~ 40KΩ varies between (RP) in as to affect the measurement results. The instrument does not need to manually adjust the balance, 3 (1/2) digit LCD display, in addition to measuring the ground resistance, it can also measure low resistance conductor resistance, soil resistivity and ground voltage AC. Should the test loop fails meter shows "1" represents the overflow, in line with conventional survey practices. Technical parameters: 1, the use of ambient temperature conditions: 0 ℃ ~ + 45 ℃ Relative humidity: ≤85% RH 2, the measuring range and current value (rms) Resistance: 0 ~ 2Ω (10mA), 2 ~ 20Ω (10mA) , 20 ~ 200Ω (1mA) Note: can extend the range to the 2000Ω voltage: AC0 ~ 20V 3, measurement accuracy and resolution accuracy: 0 ~ 0.2Ω≤ ± 3% ± 1d 0.2Ω ~ 200Ω≤ ± 1.5% ± 1d 1 ~ 20V≤ ± 3% ± 1d Resolution: 0.001Ω, 0.01Ω, 0.1Ω, 0.01V 4, auxiliary earth resistance and ground voltage measurement errors caused by a permit auxiliary earth resistance RC (between C1 and C2) <. 1.8KΩ; RP (between P1 and P2) <40KΩ error ≤ ± 5% b allows ground voltage ≤5V (frequency RMS) error ≤ ± 5% 5, power supply and power consumption Maximum power consumption ≤2W DC: 8. × 1.5V (AA, R6) battery AC: 220V / 50Hz Volume: 220mm × 200mm × 105mm Weight: ≤1.4kg