AEMC 2135.61 Ground Resistance Tester - w/o Probes (Cat #2135.48 & Cat. #2135.37)

The AEMC 2135.61 is a digital ground resistance tester, manufacturer model 6471. It measures ground resistance, bond resistance, ground coupling resistance, selective ground resistance, soil resistivity, current, and external voltage. Portable field operation supports multiple grounding test methods with auto-ranging measurement behavior.

- Auto-ranging operation selects the optimum measurement range for ground resistance testing.
- Automatic test frequency and test current selection supports stable measurement across available test methods.
- 3-pole and 4-pole measurement methods determine ground resistance using auxiliary electrode configurations.
- 2-pole and 4-pole Kelvin sensing modes measure bond and connection resistance.
- Wenner and Schlumberger methods calculate soil resistivity from 4-point measurement inputs.

- 4-point earth resistance measurement ranges from 0.01 Ω to 99.99 kΩ.
- 3-point earth resistance measurement ranges from 0.09 Ω to 99.9 kΩ.
- Soil resistivity measurement ranges from 0.01 Ω to 99.9 kΩ, with ρ max of 999 kΩm.
- 2-clamp ground measurement ranges from 0.1 Ω to 500 Ω with optional probes.
- External voltage measurement ranges from 0.1 V to 65 V AC/DC.

- W/o probes configuration identifies the supplied configuration as listed.
- USB 2.0 optically isolated communication supports transfer to DataView software.
- Internal memory stores 512 measurements for recorded test results.

- Ground resistance testing using 3-pole or 4-pole methods.
- Soil resistivity testing using Wenner or Schlumberger methods.
- Bond and connection resistance testing using 2-pole or 4-pole Kelvin sensing.