Micro-ohmmeter -DLRO200, DLRO600
Megger DLRO200 measures resistances between 0.1 μΩ and 1 Ω, at
This versatile instrument can provide test currents from 10 amps up to
200 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 DLRO200 to be kept
to a minimum; the instrument weighs less than 15 kg. This small size
makes DLRO200 equally at home in the workshop,on the production
floor or in the field. The high current capability and compact design
make DLRO200 suitable for testing circuit breaker contacts, switch
contacts, busbar joints or other applications where high current is
Range: 0.1 μΩ to 999.9 mΩ
(Subject to supply voltage and leads used)
Voltage ±0.5% ± 0.1 mV
Current ±0.5% ± 0.1 A
Resistance: Better than
1% from 300 μΩ to 100 mΩ
Better than ±2% from
100 μΩ to 300 μΩ
Current Lead Resistance (Megger supplied leads)
2 x 5 m 25 mm2 current leads 8 m
2 x 5 m 50 mm2 current leads 4 mΩ
2 x 10 m 70 mm2 current leads 5.4 mΩ
2 x 15 m 95 mm2 current leads 6 mΩ
Maximum Continuous Test Time
More than 10 minutes at 200 A @
20 ºC ambient.
Power Supply for DLRO200 for full output (unsmoothed d.c.)
100 to 265 V 50/60 Hz with a load less
than 19 mΩ (supply >207 V rms), or
11 mΩ (115 V rms) including
Power Supply for DLRO200-115 V for full output
100 to 130 V 50/60 Hz with a load less
than 11 mΩ including current leads
Manual, Auto, Continuous.
10 seconds NORMAL /AUTO mode.
Refreshed every 2 seconds in
Large, high resolution backlit liquid
Current flowing: - LED. Other warnings
are shown on the lcd display
Real time or batch download via
RS232 using Download Manager.
300 result sets and memo,
battery backed for 10 years.
160 characters max.
Test Current Range:
10 A to 200 A d.c. *
±2% ±2 A
Voltmeter input impedance:
5 V rms 50 Hz/60 Hz
-10 to +50 ºC (-14 to +122 ºF)
-25 to +65 ºC (-13 to 149 ºF)
<0.05% per ºC
95% RH non-condensing
410 x 250 x 270 mm
(16.4 x 9.84 x 10.63 ins)
14.5 kg (excluding test leads)