Résistivité du sol
- Humboldt - H-4385D
ASTM G187, ASTM G57, AASHTO T288
- Plage de 0,01Ω à 1MΩ: ± 1,6% ± 1LS Chiffre d'affichage ± 0,01Ω
- Plage de 1MΩ à 10MΩ *: ± 5% ± 1LS Chiffre d'affichage
The digital resistivity meter provides soil resistivity readings at the push of a button.
It provides a direct read-out of resistance without a need to select ranges or adjust dials. The resistance range is from 0.01Ω to 10MΩ (auto-ranging). The meter provides a high-resolution digital display and is housed in a rugged, hard plastic case— safe for use on wet ground. It provides a blue-tooth interface for optional data logging via a bluetooth- enabled PC. Resistance measurements are unaffected by any stray interference signals, which may be present in the soil during readings, due to the use of narrow band-pass filters centered at 82.2Hz (the unit’s operating frequency). Runs on a set of replaceable D-cell alkaline batteries with no need to periodically recharge the unit or to plug it into a power source. Performs 10,000 single readings on a fresh set of batteries. For data logging capabilities, the meter is supplied with an “overthe pipe” soil resistivity survey program, known as “ProCP soil resistivity”, based on the 4-Pin Wenner methodology.
- 0.01Ω to 1MΩ range: ±1.6% ±1LS Display Digit ±0.01Ω
- 1MΩ to 10MΩ range*: ±5% ±1LS Display Digit