上海艾斯达电子

与groundflex®适配器型号6474和®groundflex传感器的主塔的接地电阻允许系统测量漏电流和接地电阻塔腿而不断开架空地线导体。

• The Model 6472 measures from 0.01 to 99.99kΩ and is auto-ranging, automatically seeking out the optimum measurement range, test frequency and test current. Easy-to-use – Simply connect the leads, select test mode, press Start and read the results. Up to 512 test results can be stored in internal memory for recall to the display or downloaded to a PC via DataView® software. The large LCD is easy-to-read and indicates ground electrode resistance, test voltage, current and frequency as well as individual electrode resistance, battery status and more. The Model 6472 is Cat IV rated to 50V and is over voltage protected to more than 250Vac against accidental live connection to live circuits. The voltage is also displayed on screen. In the event of a system fault, the Model 6472 can withstand 250Vac.Additional features of the Model 6472 include; manual and automatic test frequency selection from 40 to 5078Hz; user selectable 3 or 4-Pole Fall of Potential or 4-Pole Soil Resistivity test methods and user selectable 2-Wire or 4-Wire Bond Resistance test method. The Model 6472 is powered by 9.6V, 3.5 Ah NiMH rechargeable batteries. An external recharger powered from 120/230V, 50/60Hz is included and provides for testing while recharging. The Model 6472 can also be vehicle powered from an optional 12V battery adapter.

  Functional Displays 4-Point Bond Test 3-Point Fall-of-Potential Test Frequency Current Schlumberger Test The 4-Point Bond test displaying lead connections, bond resistance test results, test voltage and current. The 3-Point Fall-of-Potential test displaying test lead connection, grounding electrode resistance, test voltage and frequency. The Frequency selection screen displays selected test frequency and voltage for the test as well as lead connection. Memory Recall Schlumberger Test Wenner Test Memory Recall displays test results stored at a specific memory location. The Schlumberger test displays test lead connection, soil resistivity (ρ) test results, test electrode resistance and more. The Wenner test displays test lead connection, soil resistivity (ρ) test results, electrode spacing and resistance.

  Specifications Electrical 3-Point Measurement Range (Auto-Ranging) 0.09Ω to 99.9kΩ Resolution 0.01Ω to 100Ω Test Voltage Nominal 16 or 32VRMS user selectable Resistance Measurement Frequency 41 to 5078Hz user selectable or automatic selection Test Current Up to 250mA Accuracy ±2% of Reading + 1ct @ 128Hz Soil Resistivity 4-Point Measurement Test Method Wenner or Schlumberger selectable with automatic calculation of test results in Ω-meters, Ω-cm or Ω-feet Range(Auto-Ranging) 0.01 to 99.99kΩ; ρ Max: 999kΩm(display in kΩft is not possible) Resolution 0.01 to 100Ω Test Voltage 16 or 32V user selectable Frequency From 41 to 128Hz selectable External Voltage Measurement Range(Auto-Ranging) 0.1 to 65.0Vac/dc – DC to 440Hz Accuracy ±2% of Reading + 1cts Resistance Measurement(Bond Testing) Measurement Type 2-Pole (with lead resistance compensation) or 4-Pole (Kelvin sensing) user selectable Range(Auto-Ranging) 2-Pole 0.01Ω to 99.9kΩ; 4-Pole 0.001Ω to 99.99kΩ Accuracy ±2% of Reading + 2cts Test Voltage 16Vdc (+, - or auto polarity) Test Current Up to 250mA max Data Storage Memory Capacity 512 test results Communication Optically Isolated USB Power Source 9.6V rechargeable battery pack Recharging Source 110/220 50/60Hz external charger with 18Vdc, 1.9A output or 12V vehicle power