MOHAMMAD MAHDI Electronics Trading LLC
Hioki FT6031-50 Earth Tester
Brand:
Hioki
SKU:
728
The Hioki FT6031-50 is a rugged digital earth resistance tester engineered for precision grounding verification up to 2000 Ω across high-resistivity soils.
- Measurement Methods: Precision 2-pole and 3-pole grounding resistance testing.
- Rugged Enclosure: Certified IP67 dustproof and waterproof design for harsh site conditions.
- Smart Accessories: Ultra-thin stainless steel auxiliary spikes with tangle-free integrated cord winders.
- Wireless Connectivity: Optional Bluetooth data logging via the Hioki Z3210 adapter & GENNECT Cross app.
- Industrial Compliance: Ideal for rapid, DEWA-compliant earthing audits and desert substation lightning protection testing.
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Description
Rugged IP67 Precision Earth Ground Resistance Testing
Accurate grounding verification is the cornerstone of electrical safety, lightning protection, and surge dissipation across commercial infrastructures and power distribution networks. The Hioki FT6031-50 addresses the most demanding challenges of field earth testing: high contact resistance in hyper-arid soils, severe environmental contamination, and time-consuming cable deployment.
Engineered with Japanese precision, this instrument supports both 3-pole Fall-of-Potential measurements for precise commissioning of new earth pits and 2-pole simplified testing for commercial distribution panels where auxiliary spikes cannot be driven. Built with an ultra-tough enclosure certified to IP65/IP67 standards, it can be fully rinsed clean under running water after testing in muddy trenches or dusty utility pits.
Core Capabilities & Operational Advantages
- Broad 3-Range Measurement: Measures ground resistance across 20 Ω (0.00 to 20.00 Ω), 200 Ω (0.0 to 200.0 Ω), and 2000 Ω (0 to 2000 Ω) with auto-ranging capability and high ±1.5% basic accuracy.
- Submersible IP67 Construction: Dual IP65/IP67 rating prevents ingress from fine desert dust and allows complete submersion and water-wash cleaning on active construction sites.
- Tough Ultra-Thin Earth Spikes: Corrosion-resistant stainless steel auxiliary spikes offer a narrow profile that inserts effortlessly into compacted gravel or hard-packed subgrade soils without bending.
- Tangle-Free Cord Winders: Dedicated 10 m and 20 m cable reels eliminate lead knots and reduce test setup and retrieval times by over 50%.
- Earth Voltage & Live Line Alert: Measures ground potential up to 30.0 V rms with a built-in safety warning system to protect field technicians from unexpected stray voltages.
- Wireless IoT Reporting: Seamlessly pairs with the optional Hioki Z3210 Wireless Adapter to transfer readings, GPS locations, and photos directly into the free GENNECT Cross mobile application.
Engineering Verdict: Hioki FT6031-50 Technical Evaluation & GCC Field Utility
The Hioki FT6031-50 stands out as one of the most reliable field-portable grounding instruments for MEP contractors and utility inspectors across the UAE, Saudi Arabia, and Oman. In high-temperature ambient conditions reaching up to 50°C, grounding leads often become rigid and standard spikes bend against baked clay or gravel. Hioki’s stainless steel auxiliary electrodes and high auxiliary resistance tolerance overcome these local field barriers without triggering false electrode-fault codes.
- Best Suited For: Lightning protection system audits, telecommunication mast grounding, solar PV plant earthing arrays, and building handover compliance testing under DEWA, SEWA, and Aramco safety regulations.
- Standard Compliance: Fully conforms to EN 61557-1 and EN 61557-5 international electrical safety standards.
- Engineering Limitation: Designed strictly for 2-pole and 3-pole staged testing. If you require online, non-intrusive stakeless earth testing without disconnecting the earth tape or down-conductor, select the Hioki FT6381 Earth Clamp Tester.
Technical Benchmark: Flagship Earth Resistance Testers
| Specification / Feature | Hioki FT6031-50 | Megger DET3TD | Kyoritsu 4105A |
|---|---|---|---|
| Testing Methods | 2-Pole & 3-Pole (Switchable) | 2-Pole & 3-Pole (Switchable) | 2-Pole & 3-Pole |
| Measurement Range | 0.00 Ω to 2000 Ω (3 ranges) | 0.01 Ω to 2000 Ω | 0.0 Ω to 2000 Ω |
| Ingress Protection Rating | IP65 / IP67 (Submersible & Washable) | IP54 | IP54 |
| Cable Reel Mechanism | Included Built-in Cord Winders | Standard Test Leads | Standard Reels |
| Wireless App Export | Supported (via Optional Z3210) | Not Available | Not Available |
| Safety Standard | EN 61010, EN 61557 | EN 61010, EN 61557 | EN 61010, EN 61557 |
Looking for a comprehensive comparison? Explore our technical benchmark of the
5 Best Earth Resistance Testers
for high-resistivity desert soils and substation earthing compliance.
Measurement Method, Resolution & Operating Limits: Hioki Data
The specifications tab gives the ranges and basic accuracy. The details below, taken from the official Hioki FT6031-50 instruction manual, show how the tester measures and the limits it works within, including how much auxiliary spike resistance and stray earth voltage it tolerates.
| Range | 20 Ω | 200 Ω | 2000 Ω |
|---|---|---|---|
| Display range | 0.00 to 20.00 Ω | 0.0 to 200.0 Ω | 0 to 2000 Ω |
| Resolution, 3-pole method | 0.01 Ω | 0.1 Ω | 1 Ω |
| Resolution, 2-pole method | Not available | 1 Ω | 1 Ω |
| Allowable auxiliary electrode resistance (RH, RS) | 5 kΩ | 50 kΩ | 50 kΩ |
| Specification | Hioki data |
|---|---|
| Measuring signal | 128 Hz ±2 Hz sine wave; output 30 V rms or less (42.4 V peak or less) |
| Measurement current | 3-pole method: 25 mA rms or less; 2-pole method: 4 mA rms or less |
| Measurement time | 3-pole method: within 6 s; 2-pole method: within 3 s |
| Operating uncertainty | ±30% rdg (3-pole method), guaranteed from 5.00 Ω to 2000 Ω |
| Allowable earth potential | 25 V rms or 35.4 V peak |
| Auxiliary electrode auto-check | Displays spike resistance up to 200 kΩ after measurement starts |
| Overload protection | 360 V AC / 360 V DC for 1 min between terminals |
| Measurement category | CAT IV 100 V, CAT III 150 V, CAT II 300 V |
| Operating temperature | −25 °C to 65 °C (80% RH or less up to 40 °C, falling to 25% RH at 60 to 65 °C); accuracy × 1.0 from −10 °C to 50 °C |
| Drop resistance | 1 m onto concrete with the protector fitted |
| Standards | EN 61010 (safety), EN 61326 (EMC), EN 61557 (earth tester) |
| Battery life with Z3210 in use | Approx. 400 measurements (500 without Z3210) |
Source: Hioki FT6031-50 official instruction manual (FT6031B961), accuracy guaranteed for 1 year.
Standard Package Contents
Each original Hioki FT6031-50 package supplied by MME includes complete operational hardware:
- 1 × Hioki FT6031-50 Digital Earth Tester Unit
- 1 × Auxiliary Earthing Rod L9840 (Set of 2 stainless steel spikes)
- 1 × Black Measurement Cable L9841 (4 meters)
- 1 × Yellow Measurement Cable L9842-11 (10 meters with integrated cord winder)
- 1 × Red Measurement Cable L9842-22 (20 meters with integrated cord winder)
- 1 × Rugged Carrying Case C0106
- 1 × Protective Rubber Shell Housing
- 4 × LR6 (AA) Alkaline Batteries
- 1 × Official Instruction Manual & Factory Quality Inspection Certificate
Looking for clamp-on earth ground testers or 4-pole soil resistivity meters?
Explore our complete catalog of
Industrial Earth Ground Testers
available with genuine factory warranty, calibration support, and direct GCC dispatch from MOHAMMAD MAHDI Electronics Trading LLC.
Can the Hioki FT6031-50 test grounding systems in high-resistivity desert sand
Yes. The Hioki FT6031-50 is engineered with high auxiliary electrode resistance tolerance, allowing it to perform accurate measurements in hyper-arid and sandy terrain where standard testers display auxiliary resistance error warnings. In exceptionally dry gravel, pouring a small amount of water around the auxiliary spikes ensures reliable electrical contact.
What is the operational difference between the 2-pole and 3-pole test modes
The 3-pole method (Fall-of-Potential) is the authoritative procedure that uses two auxiliary rods spaced along the test axis to determine true electrode earth resistance, essential for initial commissioning. The 2-pole method uses an existing known low-impedance ground (such as a commercial neutral or structural frame) for simplified loop checks in paved or indoor urban environments where driving ground spikes is impractical.
Is the Hioki FT6031-50 compliant with DEWA, SEWA, and regional utility inspection rules
Yes. The device conforms to international EN 61557-1 and EN 61557-5 standards, fulfilling the mandatory testing protocols required by the Dubai Electricity and Water Authority (DEWA), Sharjah Electricity, Water and Gas Authority (SEWA), and GCC municipal inspection frameworks that specify earth electrode values typically below 5 Ω or 1 Ω depending on installation class.
How does the wireless Z3210 adapter improve on-site reporting workflows
Installing the optional Hioki Z3210 Wireless Adapter enables seamless Bluetooth synchronization with the free GENNECT Cross mobile app. Field engineers can superimpose ground resistance readings directly onto site photographs, log GPS coordinates for each test pit, and generate immediate PDF handover reports without manual paper logging.
Manual
Manual
Specifications
Specifications
Technical Specifications
| Measurement System | Two-electrode method/three-electrode method (switchable) |
|---|---|
| Measurement Range | 20 Ω (0 Ω〜20.00 Ω), 200 Ω (0 Ω〜200.0 Ω), 2000 Ω (0 Ω〜2000 Ω) |
| Accuracy | ±1.5% rdg ±8 dgt, ±1.5% rdg ±4 dgt, ±1.5% rdg ±4 dgt |
| Earth Voltage | 0〜30.0 V rms |
| Accuracy (Earth Voltage) | ±2.3% rdg ±8 dgt (50 Hz/60 Hz), ±1.3% rdg ±4 dgt (DC) |
| Allowable Earth Potential | 25.0 V rms (DC or sine wave) |
| Dustproof and Waterproof | IP65/IP67 (EN60529) |
| Power Supply | LR6 Alkaline battery ×4, Possible number of measurements: 500 times (measurement conditions: three-electrode method, measuring 10 Ω at 10-second intervals without Z3210 installed) |
| Functions | Live wire warning, zero-adjustment, continuous measurement mode, wireless communication (only when Z3210 is connected), and comparator |
| Dimensions and Mass | 185 mm (7.28 in) W × 111 mm (4.37 in) H × 44 mm (1.73 in) D, 570 g (20.1 oz.) (including batteries and protector, excluding terminal covers and other accessories) |
| Included Accessories | Auxiliary Earthing Rod L9840 (2 piece set) ×1, Measurement Cable L9841 (black 4 m) ×1, Measurement Cable L9842-11 (yellow 10 m, equipped with winder) ×1, Measurement Cable L9842-22 (red 20 m, equipped with winder) ×1, Carrying Case C0106 ×1, Protector ×1, LR6 Alkaline battery ×4, Instruction manual ×1 |
Reviews (4)
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Bench Multimeters
Carol –
Plain and simple
ali –
great website
Store manager btmcojabbari –
thnak you
Store manager BASHIR HUSSIAN –
ThankYou!
Sofia Carter –
The shop provides a seamless shopping experience, making it easy to find the right tools.
mick –
The Hioki FT6031-50 is a reliable and user-friendly earth tester that exceeded my expectations and made electrical testing seamless.