ERT100™ Earth Ground Resistance Tester
The ERT100 earth resistance tester is a professional instrument for measuring the resistance of electrical equipment safety grounds. With a large LCD display and simple controls the ERT100 is valuable in verifying the lightning safety earth connection of new or existing control systems. The tester can store up to 100 sets of measurement data.
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Overview
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3-Pole Method
For a conventional 3-pole ground-resistance test, the ERT100 uses the grounding electrode under test plus two auxiliary stakes. The instrument injects a test current into the earth and measures the resulting voltage to calculate resistance.
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2-Pole Method
The 2-pole mode is useful when a suitable known ground/reference is available and you need a simpler test arrangement. The exact connection procedure and acceptable resistance values depend on the installation and applicable electrical standards, so the manufacturer’s procedure should be followed rather than treating one resistance value as universally acceptable.
Product Features
- Transmitter battery – 6 AA 1.5 V Cells (not included)
- Data Storage – up to 100 measurements
- Weight – 1.98 lbs.
- Warranty – 12 months from date of purchase
Applications
Certify grounding rods in a 2-Wire system.
In the Box
ERT100, 3 Measurement Leads, 2 Ground Stakes, Carrying Bag
Product Documentation
Product FAQ
The ERT100 is a professional earth ground resistance tester used to measure the resistance of electrical equipment safety grounds. It can help verify grounding on new or existing control systems.
Yes. The ERT100 supports both 2-pole and 3-pole earth-resistance test modes, giving technicians flexibility depending on the grounding system being tested.
Yes. The ERT100 can be used to check grounding associated with control systems, including applications where verifying an irrigation controller or other equipment grounding is important. The appropriate test method should be selected according to the grounding system and manufacturer’s instructions.
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