Megger DLRO10HD Digital Low-Resistance Ohmmeter

The Megger DLRO10HD Digital Low-Resistance Ohmmeter is a durable, reliable product capable of performing Ducter tests; that is measuring low resistance in a wide variety of systems, machines, and components, such as railways, aircraft, and industrial resistance components.

The Megger DLRO10HD Digital Low-Resistance Ohmmeter is designed to be easy-to-use as well as versatile. It has new interchangeable test lead terminations and features five test modes, including:

Auto Start On Connection mode: starts the test as soon as the probes make contact with the item under investigation. Each time the probes are disconnected and then reconnected the ohmmeter will perform a new test automatically. This mode is ideal when working with handspikes and works by measuring forward and reverse currents and displaying the resultant average value.
Normal mode: the object under investigation is connected to the ohmmeter via the four test lead connections, then, when this mode is selected, a two-directional (reverse and forward) current will be issued after which a measurement value is displayed, thereby checking the continuity of all four connections.
Automatic Unidirectional mode: issues a current in a single direction, enabling the user to take quicker measurements.
Continuous mode: enables repeat measurements to be taken for the same sample; these measurements are updated every three seconds until the circuit is broken.
Inductive mode: ideal for testing motors and generators; this mode will continue to pass a single-direction current through the product being tested, taking repeat readings which will decrease as the voltage of the product stabilises. When the user has determined that the voltage is stable he/she need simply press the TEST button to terminate the test.

These modes are all selectable via the rotary switch and allow the user to tailor this resistance meter to his/her requirements. Each test lasts up to sixty seconds and the DLRO10HD is capable of applying 10 A into measurements up to 250mΩ and 1 A into measurements of up to 2.5Ω, thereby reducing cooling time and making inductance charging more efficient. The Megger DLRO10HD Digital Low-Resistance Ohmmeter can also issue a low or high output power, allowing the user to perform condition diagnosis.

The Megger DLRO10HD Digital Low-Resistance Ohmmeter is accurate, versatile and simple-to-use; its rotary switches can be operated in all weathers and with gloves, whilst its large, backlit, LCD display with contrast adjustment ensures that values can be easily read in all conditions and environments. Furthermore this product’s ability to be connected with a line power supply, which will ensure that it remains operational even if the rechargeable battery is flat, further extends this ohmmeter’s practicality.

In addition to this, the Megger DLRO10HD Digital Low-Resistance Ohmmeter is highly resilient. The Megger DLRO10HD can withstand 600V without blowing a fuse and has a live test lead warning light. It is supplied with a robust case featuring a shoulder strap and lead set pouch. When enclosed in this case the ohmmeter has an IP rating of 65, meaning it is resistant to low-pressure water jets and is dust tight. For a greater insight into the resilience of this product, please see the video below.

How tough is a DLRO10HD?

The Megger DLRO10HD Digital Low-Resistance Ohmmeter is resilient, accurate and easy-to-use, suitable for use in a variety of environments.

Megger DLRO10HD Digital Low-Resistance Ohmmeter Key Features

Durable ohmmeter capable of measuring low-resistance in variety of products and environments
Interchangeable test lead terminations
Five test modes, including Auto Start on Connection; Normal; Automatic Unidirectional; Continuous; Inductive
All modes selectable via rotary switch which is easy to use in all weather conditions and when wearing gloves
Tests last for up to 60 seconds
Can deliver 10 A into measurements up to 250mΩ and 1 A into measurements of up to 2.5Ω
10A for 60 seconds, reduces cooling time and is better for charging inductance
Can issue high or low output power for condition diagnosis
Large, backlit, LCD display with contrast adjustment
Can be connected to a line power supply which maintains the product’s functionality even if the battery is flat
Withstands 600V without blowing a fuse
Inadvertent connection to line or UPS voltage will not blow a fuse
Test lead live voltage warning light
Supplied with robust case with shoulder strap and lead set pouch
Heavy duty case which, with the lid closed, has an IP rating of 65
Protected to IP54 (battery operational only)
Auto Power Off function
Removable lid facilitates easy test lead connection

What’s Included?

Megger DLRO10HD Digital Low Resistance Ohmmeter
Robust, hard case with shoulder strap and lead set pouch
DLRO10HD User Guide CD
Warranty Book

Megger DLRO10HD Digital Low-Resistance Ohmmeter Technical Specifications

Temperature Coefficient	< 0.01% per ºC, from 5 ºC to 40 ºC
Maximum Altitude	2000 m (6562 ft) to full safety specifications
Display Size/Type	Main 5 digit + 2 x 5 digit secondary displays
Battery Type	6 V, 7Ah sealed lead acid
Voltage Input Range	100 - 240 V 50 / 60 Hz 90 VA
Charge Time	8 hours
Backlight	LED backlight
Battery Life	>1000 Auto (3 sec) tests
Auto Power Down	300s
Mode Selection	Rotary switch
Range Selection	Rotary switch
Weight	6.7 kg
Case Dimensions	L315 mm x W285 mm x H181 mm
Pouch for Test Leads	Yes (lid mounted)
Test Leads	NOT SUPPLIED
IP Rating	IP65 case closed, IP54 battery operation
Safety Rating	In accordance with IEC61010-1, CATIII 300V when used with optional terminal cover (details in ordering information)
Operating Temperature and Humidity	-10 °C to +50 °C (14 °F to 122 °F) <90% RH
Reference Conditions	20 °C ±3 °C
Storage Temperature and Humidity	-25 °C to +60 °C, <90% RH
EMC	In accordance with IEC61326-1 (Heavy industrial)
Noise Rejection	Less than 1% ±20 digits additional error with 100 mV peak 50/60 Hz. on the potential leads. Warning will show if hum or noise exceeds this level.
Maximum Lead Resistance	100 mΩ total for 10 A operation irrespective of battery condition