| GEOHM C | GEOHM 5-Set | GEOHM PRO | GEOHM XTRA | |
|---|---|---|---|---|
| Item number | M590A | M591B | M592A | M592B |
| Product details page | Details | Details | Details | Details |
| Indication | Digital | Digital | Digital | Digital |
| Internal memory | x | x | x | x |
| Background illumination | x | x | x | |
| Low resistance measurement according to EN61557-4 / VDE 0413-4 | x | x | ||
| Measurement even with existing interference voltages in systems with 16.7 Hz, 50 Hz, 60 Hz and 400 Hz | x | x | x | x |
| Earth loop resistance measurement with 2 current clamp meters (dual-clamp method) | x | x | x | |
| Battery status indicator | x | x | x | x |
| Data interface | x | x | x | x |
| 3-wire earth resistance measurement with a current clamp meter (selective) | x | x | x | |
| Specific earth resistance (Wenner method) | x | x | x | x |
| RTC real-time clock | x | x | ||
| Current measurement (leakage currents etc.) | x | x | x | |
| Measurement of interference voltages | x | x | x | x |
| Entry of distances between measurement electrodes | x | x | x | x |
| Selection of measuring voltages | x | x | ||
| Resistance measurement by means of auxiliary electrodes RS and RH | x | x | x | x |
| GPS module | x | |||
| 3 and 4-wire earth resistance measurement | x | x | x | x |
| (Rechargeable) battery operation | x | x | x | x |
| Help function with connection diagrams | x | x | x | x |
| Measurement of interference frequencies | x | x |