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The Megger DLRO10x Digital Low Resistance Ohmmeter is a fully automatic instruments, selecting the most suitable test current up to 10 A d.c. to measure resistance from 0.1 μΩ to 2000 Ω, on one of seven ranges.
For users who desire more control over the measurement process, DLRO10X uses a menu system controlled by a two-axis paddle to allow the user to manually select the maximum test current.
DLRO10X also adds real time download of results and on board storage for later download to a PC.
Features
- Accurate results in under three seconds
- Auto current reversal cancels standing emfs
- Fuse protected to 600 V
- NiMH battery reduces weight
- 250 mW power limit (with optional override) to avoid heating the test sample
- Automatically detects continuity in potential and current connections
- Visible warning of high voltages present at the terminals
- Visible warning of current flowing in the test sample
- Multiple operating modes including fully automatic
- Alpha-numeric keypad for entering test notes
- User settable high and low limits
- Autoranging with Manual option
- Printer output and memory
Specifications
| Measurement | Mode | Manual, Auto, Continuous, Inductive, Unidirectional |
| Control | Fully Automatic/Manual |
| Speed | <3s for forward & reverse current and to display average |
| Display | Range and Safety | Large backlit LCD |
| Test Method | Single cycle reversing d.c. ratio-metric measurement -average result display. |
| Test Current | Accuracy | ±10% |
| Stability | <10 ppm per second |
| Maximum Lead Resistance | 100 mΩ total for 10 A operation irrespective of battery condition. |
| Voltmeter input impedance | > 200 kΩ |
| Hum rejection | Less than 1% ±20 digits additional error with 100 mV peak 50/60 Hz. on the potential leads. Warning will show if hum or noise exceeds this level. |
| Data | Transfer | Real Time or from storage via RS232 |
| Storage | 700 tests |
| Memo Field | Up to 200 characters per test via integral alphanumeric keypad |
| Battery | Capacity | 7 Ah NiMH rechargeable |
| Life | Typically 1000 x 10 A tests before recharge |
| Recharge | Via external 90 V - 260 V 50/60 Hz charger or from 12 to 15 V dc supply |
| Charging Rate | Standard | 2.5 hours to 90% capacity, 4 hrs for full charge |
| Temperature | Operation | +5 ºC to +45 ºC (41 ºF to 113 ºF) at full specification |
| -10 ºC to +50 ºC (14 ºF to 122 ºF) at reduced accuracy |
| Storage Co-efficient | -30 ºC to +70 ºC (-22 ºF to 158 ºF) |
| Slow charging | <0.01% per ºC over range 5 ºC to 40 ºC (<0.006% per ºF from 4 1ºF to 104 ºF) |
| Humidity (max) | +10 ºC to +45 ºC (50 ºF to 113 ºF) |
| Altitude (max) | 90% RH @ 40 ºC (104 ºF) non-condensing |
| Safety | 2000 m (6562 ft) to full safety specifications |
| EMC | In accordance with IEC61010-1 600 V Category III - only when DH6 leads are used. |
| In accordance with IEC61326-1 |