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MO2Ke Digital Low Resistance Ohmmeter

The MO2Ke is a portable, microprocessor-controlled low resistance ohmmeter designed for accurate measurement of resistances in contacts, switches, transformer and motor windings, and similar applications. With test currents from 1 mA up to 1 A, the MO2Ke provides resolution down to 0.01 mΩ and measurement ranges up to 2 kΩ.

Using the four-terminal Kelvin method, the MO2Ke eliminates errors caused by test leads and contact resistances. Results are displayed digitally with up to 4½ digits resolution, supported by a HOLD function to freeze measured values. An RS232 serial output allows connection to a printer, PC, or data logger for test recording.

Built with rugged IP65-rated construction and powered by rechargeable battery or mains, the MO2Ke is lightweight, impact-resistant, and suitable for both field and laboratory use under severe conditions.

Function

• Low resistance measurement up to 2 kΩ with resolution of 0.01 mΩ
• Four-terminal Kelvin method eliminates lead resistance errors
• Selectable test currents from 1 mA to 1 A, continuously adjustable
• Direct alphanumeric display with 4½ digits resolution
• HOLD function for freezing displayed values
• RS232 interface for data logging or printing
• Rugged portable construction, IP65-rated
• Operates from internal rechargeable battery or mains supply

Technical Specifications

test currents

  • 1 mA, 10 mA, 100 mA, 1 A

  • Each continuously adjustable from 0 to 100 %

resistance ranges

  • 0–2 Ω @ 1 A

  • 0–20 Ω @ 100 mA

  • 0–200 Ω @ 10 mA

  • 0–2000 Ω @ 1 mA

resolution

  • 0.01 mΩ @ 1 A

output voltage

  • Up to 10 V DC open circuit (depending on current)

measurement principle

  • Four-terminal Kelvin type

accuracy

  • ±0.2 % of reading ± 2 digits

display

  • Alphanumeric, up to 4½ digits resolution

  • HOLD function for retaining measurements

interface

  • RS232 serial output, 4800 bps

environmental protection

  • IP65 (with closed lid)

safety compliance

  • IEC 61010-1

power supply

  • Rechargeable 12 V, 3000 mAh internal battery

  • 100–240 V AC mains supply

  • Built-in charger included

operating conditions

  • Temperature: -10 °C to +50 °C

  • Humidity: 95 % RH (non-condensing)

storage conditions

  • Temperature: -25 °C to +70 °C

dimensions

  • 258 × 205 × 120 mm

weight

  • ~3 kg

Key Features

  • High-resolution resistance measurement down to 0.01 mΩ

  • Resistance measurement up to 2 kΩ

  • 4 selectable test currents, adjustable from 0 to 100 %

  • Microprocessor controlled operation

  • HOLD function for stored readings

  • RS232 output for printer, PC, or data logger

  • Rugged IP65-rated housing

  • Portable and lightweight design

  • Operates from rechargeable battery or mains supply

Standard Accessories

  • 2 combined current and potential leads

  • Ground cable

  • Power cord

  • RS232 cable

  • User guide

  • Carrying bag

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