Earth Testers
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£177.59 £147.99
- Datahold and data logging
- Simple two-wire testing and precision three-wire testing
- Range selection
147 Reward PointsPrice Match GuaranteeUT521 -
£205.14 £170.95
- Comes complete with test leads and two auxiliary Earth bars
- AC/DC voltage, resistance, and continuity testing
- Auto power off
170 Reward PointsPrice Match Guarantee382252 -
Free UK DeliverySofamel IER4000 Digital Ground Resistance Tester£323.16 £269.30
- 2-pole and 3-pole methods
- Results recorded in memory
- Protects user from dangerous voltages
269 Reward PointsPrice Match GuaranteeIER4000 -
Free UK DeliveryDiLog DL9062 Earth Resistance Tester£354.00 £295.00
- Measure ground, low-level regular, and liquid resistance
- Perform continuity tests and take voltage measurements
- Earth resistance measurement range of 20Ω to 2000Ω
295 Reward PointsPrice Match GuaranteeDL9062 -
Free UK DeliveryKewtech KEW4105A Digital Earth Resistance Tester£358.80 £299.00
- Three earth resistance measurement ranges - 20, 200 and 2000 Ohms
- Housed in a protective, dust and drip proof case
- 2 wire simplified measurement system
299 Reward PointsPrice Match GuaranteeKEWET1 -
Free UK DeliveryRobin Amprobe KMP7010 Earth Resistance Tester£417.84 £348.20
- Earth resistance measurements across three ranges
- Also measures voltage
- 2 and 3 point testing
348 Reward PointsPrice Match Guarantee3730256 -
Free UK DeliveryChauvin Arnoux CA 6424 Earth & Ground Resistance Tester – 2 Pole & 3 Pole£619.20 £516.00
- Earth measurement: 0.05Ω to 50kΩ
- Voltage: up to 600V
- Line/ leakage current: 0.5mA to 60A
516 Reward PointsPrice Match GuaranteeP01127014 -
Free UK DeliveryMetrel MI3123 SMARTEC Earth Tester£698.40 £582.00
- Simple push button interface designed for use with gloves
- Comes with rechargeable batteries, rods and test leads
- Ergonomic, handheld shape
582 Reward PointsPrice Match GuaranteeMI3123 -
Free UK DeliveryMegger DET3TD Earth Tester£718.80 £599.00
- Measures earth resistance to 2000Ω
- 2 and 3 point testing
- Selectable 25V or 50 V output
599 Reward PointsPrice Match GuaranteeMEGET8 -
Free UK DeliveryMegger DET3TC Earth Tester£721.20 £601.00
- Ground stake testing
- Attached rod technique ability
- Large LCD display
601 Reward PointsPrice Match GuaranteeMEGET9 -
Free UK DeliveryExtech GRT300 4 Wire Earth Ground Resistance Tester Kit£730.80 £609.00
- Earth resistance measurements up to 2000Ω
- 2, 3 and 4 wire testing procedures
- Also measures AC earth voltage
609 Reward PointsPrice Match GuaranteeGRT300 -
Free UK DeliveryChauvin Arnoux CA6460 Earth & Resistivity Tester£894.00 £745.00
- Measurements of earth, resistivity and coupling
- Watertight protective casing for use wherever you need it
- Superior protection - work safely at all times
745 Reward PointsPrice Match GuaranteeP01126501 -
Free UK DeliveryMegger DET4TD2 Earth Tester£1,008.00 £840.00
- Two, three and four point testing
- Stakeless testing
- Failure indication
840 Reward PointsPrice Match GuaranteeMEGET11 -
Free UK DeliveryChauvin Arnoux CA6462 Earth Tester - Choice of Kit£1,146.00 £955.00
- Rechargeable battery contains almost five hours of power
- Measures up to 1999 Ohms of ground resistance
- User-friendly LCD screen with backlight
955 Reward PointsPrice Match GuaranteeCA6462 -
Free UK DeliveryMegger DET4TR2 Rechargeable Earth Tester£1,162.80 £969.00
- 2, 3 and 4 point testing
- Rechargeable
- Suitable for use outdoors
969 Reward PointsPrice Match Guarantee1000-324 -
Free UK DeliveryMegger DET4TC2 Earth Tester£1,284.00 £1,070.00
- IP54 safety ratings
- Warning indicators prevent test failure
- Simple one button operation
1070 Reward PointsPrice Match Guarantee1000-345 -
Free UK DeliveryMegger DET4TCR2 Rechargeable Earth Tester£1,327.20 £1,106.00
- ART (Attached Rod Technique) capability
- Multiple, user selectable test frequencies
- Includes leads, stakes, calibration certificate and rugged carry case
1106 Reward PointsPrice Match Guarantee1000-346 -
Free UK DeliverySofamel CRT-1200 Clamp Earth Resistance Tester - Optical & Acoustic£1,331.76 £1,109.80
- 3700 V test voltage
- 6.5 mm electric clearance
- Automatic range
1109 Reward PointsPrice Match GuaranteeCRT-1200 -
Free UK DeliveryFluke 1623-2 GEO Earth Ground Tester£1,498.80 £1,249.00
- Four measuring methods
- Suitable for use indoors and outdoors
- High accuracy
1249 Reward PointsPrice Match GuaranteeFLUEGT1 -
Free UK DeliveryChauvin Arnoux CA6470N Earth & Resistivity Tester£1,554.00 £1,295.00
- Rechargeable battery can be charged through the mains or in a car
- Measures earth resistance, frequency, resistivity and coupling
- USB port to send data to your computer
1295 Reward PointsPrice Match GuaranteeP01126506 -
Free UK DeliveryMegger DET4TC2 Earth Tester + Clamps£2,178.00 £1,815.00
- Free calibration certificate with your device, as well as leads, stakes and a hard wearing carry case
- ICLAMP and VCLAMP provided
- ART and stakeless testing possible
1815 Reward PointsPrice Match Guarantee1000-365 -
Free UK DeliveryCatu MX-430-M Earth Tester£2,196.14 £1,830.12
- Measure earth resistance, resistivity and detect parasitic voltages
- Built inside its own carrying case
- Four measurement ranges
1830 Reward PointsPrice Match GuaranteeMX-430-M -
Free UK DeliveryMegger DET4TCR2 Earth Tester + Clamps£2,310.00 £1,925.00
- Includes DET4TCR2 + Clamps
- Perform ART and true stakeless testing
- Wide testing range
1925 Reward PointsPrice Match Guarantee1000-366 -
Free UK DeliveryFluke 1625-2 GEO Earth Ground Tester£2,348.40 £1,957.00
- Four measuring methods included
- Features new Stakeless Testing
- Advanced functions included
1957 Reward PointsPrice Match GuaranteeFLUKE 1625
About Earth Testers
Grounding is an essential part of an electrical installation or system. Proper grounding ensures that the electrical system is safe for use at all times and that electricity flows to earth, rather than through a nearby conductor such as a human.
Grounding systems are different from conventional installations - whereas a standard electrical installation will have a ground wire built in to direct the flow of current, grounding systems only have current flow when there is a problem. Grounding systems create a path for current to flow, but during a problem, current can range from a couple of mA of unwanted static charge to induced voltages or fault currents of several thousand amps. Current flowing to the ground through a grounding system is not constrained to follow any given path to earth as the current would in a normal circuit.
Since this is the case, specialist earth testing equipment is required to ensure that earth grounding systems have overall resistance up to a maximum of 25Ω, which is the standard defined to ensure the overall safety of grounding installation. Although this is the overall standard of resistance, several devices experience problems with ground resistance of this level, and specialist earth equipment can be used with sensitive electronic equipment to carry out proper earth grounding as necessary.
Earth testing equipment allows different kinds of earth grounding to be installed correctly. No matter whether you're carrying out earth grounding in buildings, on equipment, or electronics, there's a piece of equipment in store that can do that.
Proper grounding requires extensive testing procedures before, during, and after the installation of the grounding. Earth testers and other earth testing equipment are used regularly in this field to carry out testing procedures on grounding, allowing users to test such things as voltage measurements (system voltage and static electricity voltages), current measurements (system currents and leakage currents) and resistance measurements (ground system resistance, soil resistance, and soil PH measurements).
Earth Tester Types
There are many different types of earth testers, suitable for a wide array of different earthing applications. There are clamp-on ammeters, clamp-on leakage current meters, electrostatic locator meters, multimeters, three-terminal ground resistance meters, four-terminal ground resistance meters, and soil pH meters. There's also a selection of accessories available for these different products that expand the overall capabilities of the tester. Example accessories used with earth testers included earth spikes, cable reels, and attachable optional clamps.
The following equipment types are suitable for the following grounding applications:
Test or Measurement | Test Instrument |
Measuring circuit, system, or ground voltages | Standard voltmeter |
Measuring circuit or system current | Standard clamp-on ammeter |
Measuring ground leakage current | Clamp-on leakage current meter |
Measuring static electrical charges | Electrostatic discharge meter |
Measuring earth ground system (ground rod/grid, ground connections etc.) resistance without connecting the earth's ground to the building grounding system |
Clamp-on ground resistance meter |
Measuring earth ground system (ground rod/grid, ground connections etc.) resistance before connecting the earth's ground to the building grounding system |
3-terminal ground resistance meter |
Measuring the earth's resistance (resistivity) | 4-terminal ground resistance meter |
Measuring soil pH | pH meter |