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Fluke 1625 Advanced Soil Conductivity Meter

Key Features
  • 3- and 4-pole earth ground measurement
  • 4-Pole soil resistivity testing
  • 2-pole resistance measurement AC
  • 2- and 4-pole resistance measurement DC
  • Selective testing, no disconnection of ground conductor (1 clamp)
  • Stakeless testing, quick ground loop testing (2 clamps)
  • Earth impedance measurement at 55 Hz
  • Automatic frequency control (AFC) (94, 105, 111, 128 Hz)
  • Measuring voltage switchable 20/48V
  • Programmable limits, settings
  • Continuity with buzzer

The Fluke 1625 is the advanced earth ground tester that performs all four types of earth ground tests and includes features that give quicker and more accurate readings.

 

Testing Methods

  • 3- and 4-Pole Fall of Potential – standard earth ground testing using two ground stakes
  • Selective testing – without disconnecting ground rods, a technician can measure ground resistance using a combination of stakes and a clamp.
  • Stakeless testing – innovative solution using only clamps, instead of ground stakes, to measure earth ground loop resistance

The Fluke 1625 offers these advanced features

  • Automatic Frequency Control (AFC) – identifies existing interference and chooses a measurement frequency to minimize its effect, providing a more accurate earth ground value.
  • R* measurement – calculates earth ground impedance at 55 Hz to more accurately reflect the earth ground resistance that a fault-to-earth ground would see.
  • Adjustable limits – for quick test result verification.

Technical Specification.
RA 3-pole Ground Resistance Measurement (IEC 1557-5)
Measuring voltage 250 mA AC
Measure frequency 94, 105, 111, 128Hz
Resolution 0.001 Ω to 100 Ω
Measuring range 0.001 Ω to 299.9 kΩ
Intrinsic error ± (2 % of reading + 2 d)
Operating error ± (5 % of reading + 5 d)
RA 4-pole Ground Resistance Measurement (IEC 1557-5)
Measuring voltage Vm = 20/48 V AC
Short circuit current 250 mA AC
Measure frequency 94, 105, 111, 128Hz
Resolution 0.001 Ω to 100 Ω
Measuring range 0.001 Ω to 299.9 kΩ
Intrinsic error ± (2 % of reading + 2 d)
Operating error ± (5 % of reading + 5 d)
RA 3-pole Ground Resistance Measurement With Current Clamp
Measuring voltage Vm = 20/48 V AC
Short circuit current 250 mA AC
Measure frequency 94, 105, 111, 128Hz
Resolution 0.001 Ω to 10 Ω
Measuring range 0.001 Ω to 29.99 kΩ
Intrinsic error ± (7 % of reading + 2 d)
RA 4-pole Selective Ground Resistance Measurement With Current Clamp
Measuring voltage Vm = 20/48 V AC
Short circuit current 250 mA AC
Measure frequency 94, 105, 111, 128Hz
Resolution 0.001 Ω to 10 Ω
Measuring range 0.001 Ω to 29.99 kΩ
Intrinsic error ± (7 % of reading + 2 d)
Operating error ± (10 % of reading + 5 d)
Stakeless Ground Loop Measurement
Measuring voltage Vm = 20/48 V AC
Measure frequency 94, 105, 111, 128Hz
Noise current (Iext) Max. Iext = 3 A
Resolution 0.001 Ω to 10 Ω
Measuring range 0.001 Ω to 29.99 kΩ
Intrinsic error ± (7 % of reading + 2 d)
Operating error ± (10 % of reading + 5 d)
Environmental Specifications
Working temperature -10 °C to +50 °C
Operating temperature 0 °C to +35 °C
Nominal temperature +18 °C to +28 °C
Storage temperature -30 °C to +60 °C
Climatic class C1 (IEC 654-1), -5 °C to + 45 °C, 5 % to 95 % RH
Protection type IP56 for case, IP40 for battery door according to EN 60529
Safety Specifications
Safety rating CAT II, 300 V