Amprobe Telaris-Earth-Test Earth-Resistance-Tester - Manual (Page 14)

Commissioning
WARNING
• Measurements in dangerous proximity of electrical installations are only to be executed
when instructed by a responsible electrical specialist, and never alone.
• To perform this measurement the user requires the Earth Measurement Set (option).
• The instrument may only be connected to voltage-free earth connectors.
• Prior to inserting grounds or rods, check the soil for possible dangerous objects present
(pipes, conductors, etc.).
• If a voltage exceeding approx. 5V AC/DC is present at the test leads, the warning message
'Unoise' is displayed.
• To avoid faulty measurements, installed metal pipes, cables in the ground, or in open area
underground waterways or roots must be taken into account. Additionally, the specific
ground resistance is subject to seasonal weather-related variations.
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