DLRO 10 and DLRO 10X set the standards for low resistance measurement. DLRO 10 and DLRO 10X are fully automatic instruments, selecting the most suitable test current up to 10A 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, DLRO 10X uses a menu system controlled by a two-axis paddle to allow the user to manually select the maximum test current. DLRO 10X also adds real time download of results and on board storage for later download to a PC. Both instruments are built into a strong, lightweight case that is equally at home in the field or in the laboratory. Light enough to be worn around the neck, they are small enough to be taken into areas that were previously too small to access. DLRO 10 uses a large, bright 4 1/2 -digit LED display while DLRO 10X has a large, backlit LCD display. Normally, measurements are made with forward and reverse currents to cancel the effects of any standing voltages across the test sample. The average value is then displayed within 3 seconds, to a basic accuracy of 0.2%. DLRO 10X displays both forward and reverse measurements as well as the average of the two. DLRO 10X allows the user to set high and low pass limits, thereby enabling simple go-no-go testing. At the end of a test DLRO10X will store the test results, as well as any notes relevant to the test. To assist operator safety and ease of use, both in
This handbook describes the DLRO 10 and DLRO 10X digital microhmmeter, portable low‑resistance testers that automatically reverse current to cancel standing EMFs. It covers measurement principles, battery operation, RS‑232 communications, and the full range of accessories.
The document includes detailed specifications, ordering information for accessories, and safety and environmental compliance data, making it a complete reference for field and laboratory use.
| Measurement range | 0.1 µΩ to 2000 Ω |
|---|---|
| Full scale test current | up to 10 A DC |
| Accuracy | ±0.2 % |
| Maximum lead resistance | 100 mΩ total for 10 A operation |
| Input impedance (voltmeter mode) | >200 kΩ |
| Battery capacity | 7 Ah NiMH rechargeable |
| Storage capacity | Up to 700 test results |
| Dimensions | 220 × 100 × 237 mm |
| Weight | 2.6 kg |
The DLRO 10X can store up to 700 test results, each with up to 200 characters of notes.
Both models use a 7 Ah NiMH rechargeable battery pack.