Test Equipment Represented by 

D'EWART REPRESENTATIVES L.L.C.

LOW RESISTANCE OHMMETERS TEST EQUIPMENT

   DLRO 247000 Digital Low Resistance Ohmmeters

• Resolution to 0.1 µW on 599.9 µW range
• Standard accuracy of ±0.25%
• Digital readout

Megger Digital Low Resistance Ohmmeters (DLRO) are a family of highly accurate instruments that provide a simple, practical and reliable means of making low-resistance tests in the field. They also are ideal for production quality control. They operate on the four-wire measurement principle, thus eliminating lead and contact resistances. With basic accuracies of ±0.25% and resolution down to 0.1 µW, they are nonetheless designed to be rugged and portable for use at the job site. A variety of optional test leads and calibration resistance standards are offered for use with.

   DLRO600 Digital Low Resistance

• Small and weighs less than 33 lbs (15 kg)
• Test currents from 10 A to 600 A dc
• 0.1 µohms best resolution
• On board memory for up to 300 test results and notes
• RS232 port to download stored results or for real time output to a printer
• Supplied complete with 16.4 ft (5 m) test leads and download software

Megger DLRO600 measures resistances between 0.1 µohms and 999.9 mW, at high currents. This versatile instrument can provide test currents from 10 amps up to 600 amps subject to the load resistance and supply voltage. A large liquid crystal display provides all the information needed to perform a test; all test parameters and measurement results are displayed.

The unique design allows the weight and size of DLRO600 to be kept to a minimum; the instrument weighs less than 33 lbs (15kg). This small size makes DLRO600 equally at home in the workshop, on the production floor or in the field. The high current capability and compact design make DLRO600 suitable for testing circuit breaker contacts, switch contacts, busbar joints or other applications where high current is needed.

   DLRO-10 & DLRO-10X Digital Low Resistance Ohmmeters

• 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 (DLRO10X)
• User setable high and low limits (DLRO 10X)
• Autoranging with Manual option (DLRO 10X)
• Printer output and memory (DLRO 10X)

The MEGGER DUCTER DLRO10 and DUCTER DLRO10X bring new standards to low resistance measurement. Both are fully automatic instruments, selecting the most suitable test current, up to 10 A dc to measure resistance from 0.1 µW to 2000 W 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.