Datasheet

DLRO2
Ducter™ Low Resistance Ohmmeter 2 A
DLRO2 keeps you testing and produces reliable
measurements
To ensure the DLRO2 is always ready to test, the supplied
fitted as standard HR6 rechargeable NiMH batteries can
easily be swapped for non-rechargeable standard AA
alkaline batteries to keep you testing.
Hand held is not a compromise in quality of
measurement.
The DLRO2 provides 1% accuracy with a focus on
repeatability making it ideal for repeated quality tests in
production environments.
FEATURES AND BENEFITS
n Easily select functions using the rotary dial.
n Option to run the test in bidirectional mode or in
unidirectional mode to save time and battery power.
n The ability to view 3 results on the screen at any time
makes it ideal for 3-phase systems.
n Overcome the effects of standing EMF voltages using
the bidirectional test mode. Forward and reverse
results can be viewed on the secondary display.
n For stability of results, the instrument will warn you
when electrical noise, or noise from poor clip/probe
connections, is present.
n Keeps testing as long as you can, with as many as
500 x 2 A - 3 second tests from a full charge.
n Supplied with compact CATIII 600 V/CATIV 300 V
rated kelvin clip test leads.
EXAMPLE APPLICATIONS
n Aviation – Lightning protection testing measuring
mΩ resistance between receptors, wing tip to wing
tip etc., using long test leads. Optional long cable reel
test leads are available, can be used for assembly of
components, interconnection of equipment, repair
and maintenance.
n Wind turbines – Lightning protection, measuring mΩ
resistance between wing tip to ground connection at
base using long test leads. Optional long cable reel
test leads are available.
n Rail, tram and underground – rolling stock and
infrastructure, track high current joints, signalling
systems.
n Marine – Power wiring systems, protection systems,
ship-to-shore bonding, cathode protection system
testing and cable laying applications.
n Oil and gas pipelines – Bonding between welded
joints and grounding systems.
n Automotive and EV – Battery connections, weld
quality, crimped connections quality, assembly robot
welding cables.
n Cable manufacturers – Quality control, cable length.
n Component manufacturers – Quality control.
n Space exploration and engineering – Structural metal
to metal, ground network metal to metal, carbon
fibre to metal, carbon fibre to carbon fibre.
n Data centres – During electrical installation of main
panel, generator and UPS systems. Verification of
protective device contact resistance, busbar parallel
feeds, busbar lapped joints, optimum resistance over
torque and cable lug to busbar connections. During
maintenance using trending data for all aspects of the
above, verification after repair.
n Medical hand-held opportunity – Earthing and
bonding systems for protection against microshock
and macroshock.
n Panel/switchgear manufacturers – End of production
line testing, site commissioning, maintenance and
fault finding.
n Robotics – Wiring systems and connections which
are subject to stress/movement/vibration, bonding
of component parts to minimise static, grounding of
machine, welding leads of robot spot welder.
n Electrical infrastructure – Cable resistance from one
end, cable length, identification of parallel supplies
while connected, cable to lug to connection fault
finding. Checking assembled connections main supply
cables and panels, switchgear and protective devices,
UPS and changeover panels, interlinking busbars,
interlinking cables, distribution and PDU boards,
lightning protection systems, final circuits.
Test modes / options:
The DLRO2 has three main test modes
n Normal resistance mode (μΩ)
n Fast/long test leads test mode (mΩ)
n Inductive resistance mode (μΩ)
Normal Resistance mode: gives the most flexibility. The
user can set any maximum test current range up to 2 A
and the instrument will auto range to suit the measured
resistance up to that value. Useful if the test piece has
a limit to the current it can withstand. The user has full
control of the instrument’s test features which is suitable
for many applications, as listed above.