• 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 setable high and low limits
• Autoranging with Manual option
• Printer output and memory

The MEGGER  DUCTER™ DLRO10X bring new standards to low resistance measurement. It is a fully automatic instrument, selecting the most suitable test current, up to 10 A dc 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 manual selection of the test current. DLRO10X 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 which 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.

History of ‘Ducter’ testing
For over 100 years the ‘Ducter test’ has been used to describe a simple test for measuring very low contact resistances and “Ducter”, which is still used as a trade mark, was the name originally given to the low resistance ohmmeter manufactured by Megger. The name Ducter was registered by Megger in June 1908 and ‘Ducter’ has since become the industry standard.