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Selangor, Malaysia.

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Kyoritsu KEW4106 Earth Resistance & Resistivity Tester

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4106-1E.pdf (1.55 MB)

Earth Resistance & Resistivity Tester

• High test current up to 80mA yielding resolution of 0.001Ω on 2Ω range.
• Advanced Filtering method (based on FFT Fast Fourier Transform) reduces noise interference for obtaining stable measurements.
• Automatic and Manual selection of the Test Current Frequency in four bands (94/105/111/128Hz). In Automatic mode, KEW 4106 will select the most suitable Frequency.
• Several sub-results can be shown on the display: Resistance of the Auxiliary Earth Spikes, Frequency of Test Current, Voltage and Frequency of Interference (noise), Residual Resistance Rk, etc.
• Warning for excessive noise and high Auxiliary Earth Spikes resistance.
• Large Graphic Display with backlight for readings in poorly illuminated areas.
• Up to 800 measurement results can be saved in the memory and recalled on the display.
• The stored results can be transferred to a PC using the ''KEW Report'' software and a USB adaptor (Model 8212-USB) which are included.
• Robust design with IP54 protection.

Function	Range	Resolution	Measuring range	Accuracy
Earth resistance Re (Rg at ρ measurement)	2Ω	0.001Ω	0.03 - 2.099Ω	±2%rdg±0.03Ω
	20Ω	0.01Ω	0.03 - 20.99Ω	±2%rdg±5dgt (*1)
	200Ω	0.1Ω	0.3 - 209.9Ω
	2000Ω	1Ω	3 - 2099Ω
	20kΩ	10Ω	0.03k - 20.99kΩ
	200kΩ	100Ω	0.3k - 209.9kΩ
Auxiliary earth resistance Rh, Rs				8% of Re+Rh+Rs
Earth resistivity ρ	2Ω	0.1Ω·mm - 1Ω·m Autoranging	0.2 - 395.6Ω·m	ρ=2×π×a×Rg (*2)
	20Ω		0.2 - 3956Ω·m
	200Ω		20 - 39.56kΩ·m
	2000Ω		0.2 - 395.6kΩ·m
	20kΩ		2.0 - 1999kΩ·m
	200kΩ		2.0 - 1999kΩ·m
Series interference voltage Ust (A.C only) (*3)	50V	0.1V	0 - 50.9Vrms	±2%rdg±2dgt (50/60Hz)
Series interference voltage Ust (A.C only) (*3)	50V	0.1V	0 - 50.9Vrms	±3%rdg±2dgt (40 - 500Hz)
Frequency Fst	Autoranging	0.1Hz 1Hz	40Hz - 500Hz	±1%rdg±2dgt
Measuring method	Earth resistance: Fall-of-potential method (currents and voltages measured via the Probes) Measurement method of Earth Resistivity (ρ): Wenner 4-pole method Series interference voltage (earth voltage) RMS Rectifier (between the E-S Terminals)
Memory capacity	800 data
Communication Interface	Model 8212-USB Optical Adaptor
LCD	Dot-matrix 192×64 monochrome
Over-range Indication	''OL''
Overload Protection	between E-S(P) and between E-H(C) terminals AC280V / 10 sec.
Applicable standards	IEC 61010-1 CAT III 300V, CAT IV 150V Pollution degree 2 IEC 61010-031, IEC 61557-1, 5, IEC 61326-1 (EMC), IEC 60529 (IP54)
Power source	DC12V : sizeAA manganese dry battery (R6) × 8 (Auto power off: approx. 5 minutes)
Dimensions	167(L) × 185(W) × 89(D) mm
Weight	approx. 900g (including batteries)
Accessories	7229A (Earth precision measurement), 7238A (Simplified measurement test leads), 8032 (Auxiliary earth spikes [2 spiks/set])×2 sets (4 spikes in total), 8200-04 (Cord reel [4 pcs])×1 set, 8212-USB (USB adaptor with ''KEW Report(Software)''), 9121 (Shoulder strap), 9125 (Carrying case), R6 × 8, Instruction manual, Calibration certificate
Optional	8212-RS232C (RS232C adaptor with ''KEW Report(Software)'')

(*1) Auxiliary earth resistance is 100Ω with Rk correction
(*2) Depending on the measured Rg. Interval [a] between auxiliary earth spikes is 1.0 - 30.0m
(*3) This instrument is NOT designed to measure line voltages on commercial powers.

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Kyoritsu KEW4106 Earth Resistance & Resistivity Tester

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Earth Resistance & Resistivity Tester

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