手持式微歐姆計

RMO-EH 電池供電手持式微歐姆計是市場上獨一無二的低 (mΩ) 電阻測量解決方案。它設計用於在工廠、維護和調試檢查或高感應現場環境測試中檢查非感應電阻時，提供快速、可重複和精確的測量。它非常適合場域空間有限的變電站和其它設施，或需要輕便、手持、易於攜帶且測試導線較長的測試裝置時使用。

它可提供最大 10 A 的測試電流，測試導線最長可達 200 公尺（捲盤）。 它具有非常友好的用戶介面（一鍵測試功能），透過直觀的鍵盤、選單設計和帶有測試按鈕的遙控探棒實現。同時， RMO-EH 的重量不到 1 公斤。

RMO-EH 設備可用於各種應用，例如 : 

• 風力發電機 - 雷電防護。
• 機載電氣系統--接合測試。
• 鐵路線和軌道接頭測試。
• 接地系統連續性驗證。
• 高壓和中壓隔離開關。
• 大電流匯流排。
• 石油和天然氣管道接合。
• 保護性接合導體的連續性。
• 焊接接頭。
• 電纜接頭和電纜電阻。

Battery

• Type: Li-Po (User-replaceable)
  • 2 x 4 cells, 1300 mAh
•  Recharge time: 1 hour 

AC Adapter

• Input voltage 90 – 264 V AC, 47-63 Hz
• Output voltage 18 V DC
• Output current 3,33 A

Output data

• Test current range:
  • 1 mA – 10 A DC
  • *Test current is regulated and user-selectable
•  Maximum DC output voltage:
  • 16,8 V (4 cells x 4,2 V)

Measurement

•  Resistance range 0,1 μΩ – 5 kΩ
• Resolution
  • 0,1 – 999,9 μΩ: 0,1 μΩ
  • 1 – 9,999 mΩ: 1 μΩ
  • 10 – 99,99 mΩ: 10 μΩ
  • 100 – 999,9 mΩ: 0,1 mΩ
  • 1 – 9,999 Ω: 1 mΩ
  • 10 – 99,99 Ω: 10 mΩ
  • 100 – 999,9 Ω: 0,1 Ω
  • 1000 – 4999 Ω: 1 Ω
•  Typical accuracy
  ± (0,2 % rdg + 0,2% FS) – at the maximum used test current per range 
• The device is equipped with the overcurrent, overvoltage, and undervoltage protection
• Response time less than 3 seconds

Display

•  LCD display TFT 2.8 in (43,2 mm x 57,6 mm) / 1.8 in x 2.3 in 320 x 240 pixels

Memory

• Internal: 32 GB SD Card
• RMO-EH can store up to 10 000 measurements*
  • *Time and date stamped resistance, measured and selected test current, and voltage drop values

Interface

• Bluetooth communication

Environment conditions

• Operating temperature:
  • -10 ºC - +55 ºC / +14 ºF - +131 ºF
• Storage & transportation temperature:
  • -40 ºC - +70 ºC / -40 ºF - +158 ºF
•  Humidity: up to 95 %, non-condensing

Dimensions and Weight

• Dimensions (L x W x D):226 mm x 116 mm x 50 mm 8.9 in x 4.5 in x 1.9 in
• Weight: 0,95 kg / 2.1 lbs

Applicable Standards

• Installation/overvoltage: category II
• Pollution: degree 2
• Environmental tests, Shock: IEC 60068-2-27 
• Environmental tests, Vibrations: IEC 60068-2-6
• Safety: Directive 2014/35/EU (CE conform) Standard EN61010-1 (LVD Directive)
• EMC: Directive 2014/30/EU (CE conform) Standard EN 61326-1:2021

All specifications herein are valid at the rated battery voltage (or higher output voltage), ambient temperature of + 25 °C and recommended accessories. Specifications are subject to change without notice

The RMO-EH, battery-powered, and handheld micro-ohmmeter is the unique solution on the market manufactured for low (mΩ) resistance measurement. It is designed to provide fast, repeatable, and accurate measurements, where non-inductive resistance is checked during factory, maintenance, and commissioning inspections or testing in high-induction field environments. It is ideal for electrical substations and other facilities in which the availability of power supply is limited or when the lightweight, handheld, and easily portable test set with long test leads is required.

It provides a maximum of 10 A test current, and test leads even up to 200 m (on reels). It has a very user-friendly interface (1-click test), which is achieved with an intuitive keyboard, menu design, and remote-control probe with a test button. The weight of the RMO-EH is less than 1 kg.

The RMO-EH device can be used for various applications, such as:

• Wind turbines – lightning protection
• On-board aircraft electrical systems – bonding tests
• Rail vehicle, lines, and rail track joints testing
• Earthing systems continuity verification
• HV and MV disconnecting switches
• High-current busbar joints
• Oil and gas pipelines bonding
• Continuity of protective bonding conductors
• Welding joints
• Cable splices and cable resistance

Battery

• Type: Li-Po (User-replaceable)
  • 2 x 4 cells, 1300 mAh
•  Recharge time: 1 hour 

AC Adapter

• Input voltage 90 – 264 V AC, 47-63 Hz
• Output voltage 18 V DC
• Output current 3,33 A

Output data

• Test current range:
  • 1 mA – 10 A DC
  • *Test current is regulated and user-selectable
•  Maximum DC output voltage:
  • 16,8 V (4 cells x 4,2 V)

Measurement

•  Resistance range 0,1 μΩ – 5 kΩ
• Resolution
  • 0,1 – 999,9 μΩ: 0,1 μΩ
  • 1 – 9,999 mΩ: 1 μΩ
  • 10 – 99,99 mΩ: 10 μΩ
  • 100 – 999,9 mΩ: 0,1 mΩ
  • 1 – 9,999 Ω: 1 mΩ
  • 10 – 99,99 Ω: 10 mΩ
  • 100 – 999,9 Ω: 0,1 Ω
  • 1000 – 4999 Ω: 1 Ω
•  Typical accuracy
  ± (0,2 % rdg + 0,2% FS) – at the maximum used test current per range 
• The device is equipped with the overcurrent, overvoltage, and undervoltage protection
• Response time less than 3 seconds

Display

•  LCD display TFT 2.8 in (43,2 mm x 57,6 mm) / 1.8 in x 2.3 in 320 x 240 pixels

Memory

• Internal: 32 GB SD Card
• RMO-EH can store up to 10 000 measurements*
  • *Time and date stamped resistance, measured and selected test current, and voltage drop values

Interface

• Bluetooth communication

Environment conditions

• Operating temperature:
  • -10 ºC - +55 ºC / +14 ºF - +131 ºF
• Storage & transportation temperature:
  • -40 ºC - +70 ºC / -40 ºF - +158 ºF
•  Humidity: up to 95 %, non-condensing

Dimensions and Weight

• Dimensions (L x W x D):226 mm x 116 mm x 50 mm 8.9 in x 4.5 in x 1.9 in
• Weight: 0,95 kg / 2.1 lbs

Applicable Standards

• Installation/overvoltage: category II
• Pollution: degree 2
• Environmental tests, Shock: IEC 60068-2-27 
• Environmental tests, Vibrations: IEC 60068-2-6
• Safety: Directive 2014/35/EU (CE conform) Standard EN61010-1 (LVD Directive)
• EMC: Directive 2014/30/EU (CE conform) Standard EN 61326-1:2021

All specifications herein are valid at the rated battery voltage (or higher output voltage), ambient temperature of + 25 °C and recommended accessories. Specifications are subject to change without notice