Megger DLRO100H Digital Micro-Ohmmeter


Megger authorised distributor and service centre.

The Megger DLRO100 range of Low Resistance Ohmmeters provide high accuracy with noise immunity, are robust yet light and portable.

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£ 4,160.00

(£ 4,992.00 inc VAT.)

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DLRO100H  - The top-of-the-line model includes features in the E and X models, with asset tagging (enter unique asset ID's using the DLRO100 Asset Tag Windows app), Bluetooth® download and USB remote operation. The 100H is AC mains only.

A significant addition to the comprehensive range of Megger Low Resistance Ohmmeters, DLRO100 enables low resistance measurement, across multiple applications.

With a focus on user safety, advanced design features ensure the safe operation of the instrument in the most adverse conditions, megger dlro 100 terminalsincluding a CAT IV 600 VAC / 500 VDC safety rating in accordance with IEC61010. The rugged design, intuitive interface and IP54 (lid open) rating ensure reliability and ease of use in the most arduous of conditions.

A new terminal adapter has been designed to enable the use of users own test leads (see image on right).


CAT IV 600 VAC / 500 VDC up to 2000 m on all test terminals for safe operation.
CAT IV 300 V up to 4000 m.
High noise immunity for stable readings.
Smooth DC Output for circuit breaker testing.
IP54 (lid open) for protection against ingress during operation (IP65 lid closed).
Adjustable 10 - 100 A output, 4 terminal measurement for flexibility.
Adjustable current ramp rates and test duration for flexibility.
Mains only unit for manufacturing and production applications where AC is always available.
Ultra tough outer case construction designed for use in demanding environments with a flame retardant UL94 V0 inner case for safety.
DualGround™ - Using the optional DC clamp enables circuit breaker testing with ground protection in place (100X & 100H variants) for safety.
Large, clear LCD for all light conditions.
Time and Date stamped memory for recording of results (220 readings).
Range and test mode rotary switches for simplicity of operation.
Memory Storage and USB download capability (100X & 100H variants) for effective results management.
Remote Operation - Control the instrument remotely via a PC or laptop (100H variants) for added safety.
Smart device support - Running a Power DB app on Windows 8 tablet or smart phone to populate unique asset ID’s (100H variants) for efficient asset management.

Megger DLRO100 H Specifications:

  • Measurement range: 0.1 μΩ - 1.999 Ω.
  • Resolution; 0.1 μΩ.Megger DLRO 100 Models
  • Noise rejection: Differential 100 mV @ 50-60 Hz on Test Leads.
  • DC output: Smooth DC.
  • IP rating: IP54 Lid open / IP65 Lid closed.
  • Operating temperature range: -20°C up to 50°C.
  • Storage temperature range: -30°C up to 70°C.
  • Humidity: <85% R.H. non-condensing.
  • Maximum output voltage: 2 V (battery), 3 V (AC).
  • EMC: IEC61326-1.
  • Safety: IEC61010, CAT IV 600 VAC / 500 VDC up to 2000 m, CAT IV 300 V up to 4000 m.
  • Save, download and delete results.
  • Remote operation, Bluetooth® and asset and result tagging.
  • Dimensions: 400 x 300 x 200 mm.
  • Weight: 7.0 kg (AC Only).
  • Megger DLRO100H Warranty: 2 year (second year conditional on registration).


Includes: Megger DLRO100, Certificate of Test, Quick Start Guide, Calibration Certificate, CD containing the User Guide, Mains lead, USB Cable.

NB: Lead set is NOT included with the instrument and must be ordered as an optional accessory.


Optional Accessories Order Code    
DLRO100 CAT IV 600V Lead Set (5m) 1004-448
DLRO100 CAT IV 600V Lead Set (10m) 1004-449
DLRO100 CAT IV 600V Lead Set (15m) 1004-450
DLRO100 Terminal adapters (x2) 1005-555
DLRO100 CAT IV 600 V Kelvin Lead Set (5m) 1005-634
DLRO100 CAT IV 600 V Kelvin Lead Set (10m) 1005-635
DLRO100 CAT IV 600 V Kelvin Lead Set (15m) 1005-636
DLRO100 DC Clamp (MCPD 100L) 1005-622
DLRO100 Lithium Ion Battery Pack 1005-973

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Megger DLRO100H Digital Micro-Ohmmeter