Kyoritsu KEW 4106 Ground Resistance & Resistivity Tester

Kyoritsu KEW 4106Ground Resistance & Resistivity Tester

The Kyoritsu KEW 4106 is a hand-held digital instrument engineered for precise measurement of earth resistance and soil resistivity. Housed in a rugged, IP54-rated case, it integrates a microcomputer to automate complex calculations, enabling fast and reliable readings even in electrically noisy environments. Its dot-matrix LCD with backlight ensures clear visibility of results in low-light or dusty conditions.

Equipped with versatile wiring options, the KEW 4106 supports 2-, 3-, and 4-wire fall-of-potential resistance tests, as well as Wenner 4-pole resistivity measurements. Users can select or auto-select one of four test frequencies (94 Hz, 105 Hz, 111 Hz, 128 Hz) to minimize interference, while the built-in FFT-based filtering stabilizes readings under challenging site conditions..

Data management is streamlined: up to 800 results can be stored and later transferred to a PC via the supplied USB optical adapter and KEW Report software. Additional conveniences include residual-lead resistance nulling, automatic power-off, battery-voltage check, and alerted warnings for high auxiliary-spike resistance or earth-voltage interference.

Features:

• Meets IEC 61010-1, IEC 61010-2-030 (CAT III 300 V/CAT IV 150 V) and related safety standards.
• FFT-based filtering for stable measurements in noisy environments.
• Dot-matrix 19264 monochrome LCD with backlight.
• Manual/automatic selection of four test frequencies (94/105/111/128 Hz).
• Rk function to cancel residual test-lead resistance.
• Battery check and low-battery warning.
• Series interference-voltage and frequency measurement.
• Auxiliary earth-resistance measurement and warning.
• Auto-power-off after 5 min of inactivity.
• Memory for 800 measurements with PC transfer via optical adapter.

Specifications:

Applications:

• Soil surveys to optimize earth-electrode design.
• Geological investigations.

Package Contents:

• 4xEarth resistance test leads (Model 7229A) (red 40 m; yellow, black, green 20 m each)
• 1xSimplified measurement test leads (Model 7238A)
• 4xAuxiliary earth spikes (Model 8032) (2 spikes per set 2 sets)
• 4xCord reels (Model 8200-04)
• 1xUSB optical adapter (Model 8212-USB)
• 2xFuses (Model 8923, 0.5 A/600 V): 1 installed + 1 spare
• 1xShoulder strap (Model 9121)
• 1xCarrying case (Model 9125)
• 8xAA manganese batteries (R6P)
• 1xInstruction manual