OVERVIEW
GoodProx ground resistance meter GP-RM-3K is a heavy-duty industrial-grade digital measurement tool engineered for reliable, high-precision testing of all types of electrical grounding systems in harsh on-site conditions. As a professional GP-RM-3K digital ground earth resistance meter, it integrates advanced high-sensitivity microprocessor sensing technology with a rugged, dust and impact-resistant build to deliver fast, error-free readings—supporting one-person operation with no complex setup or calibration required.
This GP-RM-3K professional digital ground earth resistance meter for industrial use is battery-powered, user-friendly and equipped with advanced anti-interference performance, making it the ultimate portable ground resistance meter for electricians, maintenance technicians and industrial safety inspectors worldwide.
FEATURES
- Industrial-Grade Precision: The digital ground earth resistance meter delivers ultra-accurate grounding readings with minimal error for reliable testing results.
- Advanced Anti-Interference: Multi-layer filtering tech ensures stable readings in high-electromagnetic interference environments—core feature of the anti-interference ground resistance meter.
- Intuitive One-Click Operation: Auto range switching and one-key testing streamline on-site workflows for the ground resistance meter.
- Backlit LCD Display: Clear digital readouts in low-light industrial, outdoor and remote on-site environments for easy data reading and recording.
- Rugged Portable Build: Dust/impact/water-resistant casing and lightweight design make this portable ground resistance meter perfect for field use.
- Practical Smart Alerts: Low battery indication, over-range alarm and data hold prevent testing errors and simplify result recording.
- Battery-Powered Flexibility: Cable-free design for convenient use in remote on-site locations with no access to external power.
- International Standard Compliance: Meets global electrical testing standards for safe and reliable industrial and commercial use.
SPECIFICATION
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Model
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GP-RM-3K
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Earth Resistance
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Range: 0.01Ω~2000Ω
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Resolution: 0.01Ω
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Accuracy: ±2%rdg±3dgt
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Earth Voltage
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Range: 0V~600V AC
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Resolution: 1V
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Accuracy: ±2%rdg±3dgt
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Power Supply
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DC 9V (Alkaline dry battery LR14 1.5V 6 PCS )
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Tester Dimension
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215mm(L)X178mm(W)X83mm(H)
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Weight
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3050g (include accessories)
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Measurement Method
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Earth resistance: rated current change-pole method, measurement current 20mA Max; Earth Voltage: average value rectification
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Test Frequency
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128Hz
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Test Current
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＞20mA (sine wave)
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Measurement Times
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Over 5000 times (20Ω range measuring 10Ω for one time and repeat after 25 seconds)
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Measurement Time
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Voltage to earth: 3 times/second; Earth resistance: 5 seconds/time
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Data Storage
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400 groups, flashes display "FULL" symbol indicate that storage is full
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Data Hold
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Data hold function : "HOLD" symbol display
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Data Access
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Data access function: "READ" symbol display
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Overflow Indication
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Exceed measurement range overflow function: "OL" symbol display
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Line Voltage
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Measurement voltage to earth: AC 600V MAX
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Auxiliary Earth Rod
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2 PCS: Φ10mmX150mm
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Test Wires
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Red 15m, yellow 10m, green 5m, red 1.6m, green 1.6m(total 5pcs)
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Wire Resistance Verification
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Avoid errors caused by the test line not fully inserted into the instrument interface or poor contact or the user replaces the
lengthened test line, ensure grounding resistance measurement more accurate
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Alarm Function
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Measurement value exceed alarm setting value, LCD” ” symbol flash and alarm
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Auto Shutdown
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15 Minutes after power on, will automatic shut down without any operation.
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Battery Voltage
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While battery voltage decreases to around 7.8V, will display low battery voltage symbol“- + ”, and remind to replace the battery
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Overload Protection
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Earth resistance: between each terminal of E-P, E-C, AC 280V/3 seconds
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Electromagnetic Features
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IEC61010-4-3, Wireless frequency electromagnetic field≤1V/m
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Working Current
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Backlight: 25mA Max; System standby: 25mA Max(Backlight shut off); Measurement: 70mA Max(Backlight shut off)
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Accessories
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Tester: 1PC; Earth Rod: 2PCS; Testing Wire: 3PCS; Simple testing wire: 2PCS; Tester bag: 1PCS; Alkaline dry battery LR14 1.5V: 6 PCS
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Warranty
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12 months
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APPLICATIONS
GoodProx GP-RM-3K digital ground earth resistance meter is the premium professional grounding meter for a wide range of industries and on-site scenarios where accurate, reliable grounding system testing is critical:
- Power Industry: Substations, power plants, transformer stations and high-voltage distribution line grounding inspections, fault testing and preventive maintenance.
- Telecommunications: Telecom base stations, data centers, communication towers and outdoor network equipment grounding system maintenance and safety checks.
- Construction & Real Estate: Lightning protection and electrical grounding testing for commercial buildings, industrial facilities, high-rises and large residential complexes.
- Manufacturing & Heavy Industry: Factory production lines, heavy machinery and hazardous area equipment grounding safety compliance checks.
- Infrastructure & Transportation: Railway, highway and airport grounding system maintenance and safety inspections for electrical equipment.
- Facility Management: Routine grounding system maintenance for industrial parks, shopping malls, commercial complexes and large office buildings.
- Electrical Safety Audits: Third-party professional safety inspections and certification testing for industrial, commercial and residential grounding installations.
PRODUCT DETAILS
Why Choose GoodProx GP-RM-3K Digital Ground Earth Resistance Meter?
✅ Unmatched Industrial Precision: The GP-RM-3K industrial ground tester provides accurate, repeatable readings for critical electrical safety checks and compliance.
✅ Superior Anti-Interference: Advanced filtering technology guarantees stable readings in the most complex electromagnetic industrial environments.
✅ On-Site Portability & Durability: Lightweight compact design with rugged casing makes this portable ground resistance meter ideal for all-day field operation in harsh conditions.
✅ User-Friendly for All Skill Levels: One-click operation and auto functions make the digital ground earth resistance meter easy to use—no professional training required.
✅ Long-Lasting Field Performance: Battery-powered design with smart alerts ensures uninterrupted testing for remote on-site work.
✅ Genuine Quality: Authentic digital ground meter with strict quality control and pre-shipment calibration for consistent, reliable performance.
✅ All-in-One Testing Tool: Replaces multiple devices to meet all routine inspection, fault diagnosis and preventive maintenance needs for electrical grounding systems.
