主要功能特點：
• Measures earth ground resistance - 3 point (fall of potential) or 2 point tests
• Automatically calculates resistivity - 4 point test
• Automatic voltage measurement prevents false measurements
• Automatically applies three testing frequencies for the most accurate readings
• Test leads, auxiliary electrodes and software are included for complete instrument
• Auto ranging
• 999 internal memory locations to store measurements
• RS-232 download to a personal computer
FEATURE GP-2
Ground resistance 1999 O
Ground resistivity 199.9 kOm
AC Currrent -
AC Voltage 0 → 500.0 V