1/1

Resistance Tester | 0.00Ωm~9000kΩm Soil Resistivity Tester with Alarm Function

SKU: GP-RM-EM3KB

Professional 4-pole Wenner method tester for high-precision ground resistance and soil resistivity testing.
Rugged, portable and easy to operate.
Ideal for geotechnical, power and construction engineering on-site surveys.

$716.37

SAVE $10.00 WITH PURCHASE OVER 1 UNITS

Get it

AUTO10

Received successfully

Coupon Code

OVERVIEW

GoodProx ground resistance tester GP-RM-EM3KB is an industrial-grade precision tool built for 4-Pole Wenner Method ground resistance and soil resistivity testing— the industry standard for engineering grounding surveys. This GP-RM-EM3KB 4-Pole Wenner Method tester delivers lab-grade accurate readings, with a rugged, portable build for one-person on-site operation in harsh field conditions. Fully compliant with international testing standards, it’s the essential portable grounding tester for geotechnical engineers, electrical contractors and construction teams, meeting all pre-construction design and post-installation maintenance needs for grounding systems.

FEATURES

Wenner Method Core: Adopts 4-pole Wenner method for precise GP-RM-EM3KB soil resistivity tester and ground resistance testing.

High Precision: Lab-grade accuracy for reliable engineering survey measurement data.

Rugged Build: Dust/impact-resistant casing for harsh on-site geotechnical survey tester field conditions.

One-Click Operation: Intuitive control + auto range for efficient testing workflows.

Backlit Display: Clear LCD readouts in low-light outdoor/construction environments.

Battery-Powered: Cable-free portability for remote portable grounding tester survey use.

Smart Alerts: Low battery + over-range + data hold to avoid testing errors.

Standard Compliant: Meets international electrical/geotechnical testing standards.

SPECIFICATION

Technical Specification
Model	GP-RM-EM3KBEarth Resistance/ Soil Resistivity Tester
Earth Resistance(R)	Range: 0.00Ω~30.00Ω	Resolution: 0.01Ω	Accuracy: ±2%rdg±3dgt
	Range: 30.0Ω~300.0Ω	Resolution: 0.1Ω	Accuracy: ±2%rdg±3dgt
	Range: 300Ω~3000Ω	Resolution: 1Ω	Accuracy: ±2%rdg±3dgt
	Range: 3.00kΩ~30.00kΩ	Resolution: 10Ω	Accuracy: ±4%rdg±3dgt
Earth Voltage	Range: 0.0~600V AC	Resolution: 0.1V	Accuracy: ±2%rdg±3dgt
Soil Resistivity (ρ)	Range: 0.00Ωm~99.99Ωm	Resolution: 0.01Ωm	According to the precision of R (ρ=2πaR, a: 1 m~100m, π=3.14)
	Range: 100.0Ωm~999.9Ωm	Resolution: 0.1Ωm
	Range: 1000Ωm~9999Ωm	Resolution: 1Ωm
	Range: 10.00kΩm~99.99kΩm	Resolution: 10Ωm
	Range: 100.0kΩm~999.9kΩm	Resolution: 100Ωm
	Range: 1000kΩm~9000kΩm	Resolution: 1kΩm
Power Supply	DC 9V (Alkaline dry battery LR14 1.5V 6 PCS )
Measuring Method	Earth Resistance: rated current change-pole method, measurement current 20mA Max Soil Resistivity: Wenner 4-pole measurement; Voltage to earth: Average rectifier Earth Voltage: average rectification(between P(S)-ES)
Test Frequency	128Hz/111Hz/105Hz/94Hz(AFC)
Short-circuit Test Current	AC 20mA max	Open-circuit Test Voltage	AC 40V max
Data Storage	300 groups	Test Voltage Wave	Sine wave
Electrode Distance Range	Can be set 1m~100m	Weight	4.5kg (with package)
Data Access	Data read function: “READ” symbol display
Data Hold	Data hold function: “HOLD” symbol display
Overflow Indication	Exceed measurement range overflow function: “OL” symbol display
LCD Dimension	LCD Frame Dimension:128mmX75mm; LCD Window Dimension: 124mmX67mm
Tester Dimension	215mm(L)X178mm(W)X83mm(H)
Testing Wires	Red 20m, black 20m, yellow 10m, green 10m, red 1.6m, black 1.6m (total 6pcs)
Auxiliary Earth Rod	4 PCS: Φ9mmX230mm
USB Interface	USB interface, software supervision, storage data can be uploaded to computer, saved and printed; data transmission line length:1.5m
Alarm Function	Measuring value exceeds alarm setting value, will "Toot-toot-toot" alarm hint
Auto Power-off	15 Minutes after power on, will automatic power off without any operation
Overload Protection	Earth resistance: between each interfaces of C(H)-E, P(S)-ES, AC 280V/3 seconds
Interference Test	Automatic recognition of interference signal , interference voltage higher than 5V will display “NOISE” symbol
Auxiliary Earth Test	With auxiliary earth resistance test function: 0.00KΩ~30kΩ (100R+rC<50kΩ,100R+rP<50kΩ）
Line Voltage	Measure voltage to ground, AC voltage: AC 600V Max
Battery Voltage	While battery voltage decreases to around 7.5V, will display low battery voltage symbol“- + ”, and remind to replace the battery
Working Current	System standby: around 20mA (Backlight shut off); Power on: 45mA(backlight shut off at 25mA); Measurement: 100mA (Backlight shut off)
Accessories	Tester: 1PC; Earth Rod: 4PCS; Test Wire: 4PCS; Simple test wire: 2PCS; USB special communication cable: 1PCS; Software CD: 1COPY; Tester case: 1PCS; Alkaline dry battery LR14 1.5V: 6PCS
Warranty	18 months

APPLICATIONS

Geotechnical Engineering: Pre-construction soil resistivity surveys for grounding system design.
Power Industry: Substation/power plant grounding design and soil resistivity testing.
Construction Engineering: Building/lightning protection grounding on-site geotechnical surveys.
Electrical Engineering: Industrial/commercial grounding system compliance testing.
Telecom Engineering: Base station/communication tower grounding soil resistivity surveys.
Infrastructure Projects: Railway/highway/airport grounding engineering surveys.
Industrial Maintenance: Existing grounding system performance analysis via soil testing.

PRODUCT DETAILS

Why Choose GoodProx GP-RM-EM3KB?

✅ Industry-Standard Wenner Method: GP-RM-EM3KB 4-Pole Wenner Method tester ensures professional survey accuracy.
✅ Dual Testing Function: All-in-one for ground resistance and soil resistivity—no extra tools.
✅ On-Site Durability: Rugged build for long-term use in construction/geotechnical field conditions.
✅ Portable & User-Friendly: Lightweight design, one-click operation—suitable for all skill levels.
✅ Genuine ETCR Quality: Strict QC + pre-shipment calibration for consistent performance.
✅ Engineering Specialized: Tailored for [Long-tail Keyword] professional soil resistivity tester for construction and geotechnical work.