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HF-WC-603 Micro Ohmmeter
This high-precision Micro Ohmmeter features 0.2% accuracy, measuring ultra-low DC resistance from 0.00001 to 11Ω. Built-in power and transistor galvanometer suit onsite power, new energy and electronic testing with complete accessories.
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Built-in transistor galvanometer and internal operating power supply. Designed for accurate DC low-resistance measurement on-site in industrial & mining enterprises, laboratories and workshops.
It is widely used to measure conductivity of metal conductors, contact resistance, winding resistance of motors and transformers, as well as all other types of DC low-value resistances.
It is widely used to measure conductivity of metal conductors, contact resistance, winding resistance of motors and transformers, as well as all other types of DC low-value resistances.
Technical Specifications
- Main performance parameters of the DC bridge
- Accuracy Class: 0.2
- Operating Ambient Temperature: 5°C ~ 45°C
- Measurement Range: 0.00001 ~ 11Ω; Basic Range: 0.01 ~ 11Ω
- Accuracy: ±0.2%
- Main Power Supply: 1.5V ~ 2V (4 pieces of 1.5V No.1 dry batteries connected in parallel as internal power source)
- Power Supply for Transistor Galvanometer: Two parallel 9V 6F22 batteries
- Overall Dimension: 300 × 255 × 150 mm
- Net Weight: Approx. 4.5 kg
Core Applications
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Electrical Connection Quality Inspection
Test contact resistance of switches, circuit breakers and relay contacts, and check conductive performance of cable terminals, welding joints and busbar overlapping parts. Troubleshoot potential connection risks to guarantee stable and reliable circuit operation.
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Winding and Coil DC Resistance Measurement
Precisely measure DC resistance of windings on motors, transformers and generators, so as to detect inter-turn short circuits, loose solder joints and other winding defects. It is an indispensable core testing tool for daily power equipment maintenance. -
Electronic Component Quality Testing
Perfect for low-resistance measurement of PCB traces, vias, precision resistors and connectors. Compatible with automatic sorting equipment to finish batch quality screening efficiently, satisfying high-speed testing requirements of electronic manufacturing production lines. -
Material & New Energy Industry Testing
Analyze resistivity of metal conductors and conductive materials; meanwhile measure contact resistance of EV battery connecting bridges and battery cells to ensure conductive performance of new energy components meets standard requirements.
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Industrial & Laboratory Research Use
Carry out grounding continuity tests for aerospace and rail transit facilities, and conduct low-resistance characteristic research in labs. Portable versions support outdoor on-site field measurement.
Packing List
| Item No. | Description | Quantity | Unit | Remarks |
|---|---|---|---|---|
| 1 | Micro Ohmmeter Main Unit | 1 | Set | Accuracy class: 0.2 |
| 2 | 4-wire Test Cables & Test Clips | 1 | Set | Eliminates contact resistance for winding & loop resistance testing |
| 3 | Complete Set of Built-in Dry Batteries | 1 | Set | For main unit power supply and transistor galvanometer |
| 4 | English User Operation Manual | 1 | Copy | Includes circuit diagram, technical parameters & calibration procedures |
| 5 | Factory Calibration Certificate | 1 | Copy | Available for overseas project acceptance |
| 6 | Spare Fuses & Consumable Parts | 1 | Set | For routine equipment maintenance |
| 7 | Shockproof Portable Hard Carrying Case | 1 | Piece | Moisture-proof and anti-shock, convenient for field outdoor use |
| 8 | Packing Auxiliary Materials | 1 | Lot | Shock-absorbing foam, moisture-proof bag, wooden outer case |
FAQ for Micro Ohmmeter
Q1: What is the main purpose of this micro ohmmeter?
A: It is a high-precision low resistance tester designed to measure DC ultra-low resistance. Widely used to test transformer/motor/generator winding resistance, high-voltage switch loop resistance, contact resistance of cable joints and metal conductors for power maintenance, electronic manufacturing and new energy industries.
Q2: What is the measurement range and accuracy of the device?
A: Measurement range: 0.00001 ~ 11Ω, basic measuring range: 0.01 ~ 11Ω. Accuracy class is 0.2 with precision of ±0.2%.
Q3: What power supplies does the instrument adopt?
A: The main circuit internal power supply adopts four parallel 1.5V No.1 batteries (1.5V~2V); the transistor galvanometer is powered by two parallel 9V 6F22 batteries.
Q4: What is the applicable working temperature environment?
A: Normal operating temperature range: 5°C to 45°C, suitable for indoor laboratory, workshop and outdoor power site inspection.
Q5: Does the equipment come with complete testing accessories?
A: Yes. It is fully equipped with 4-wire test leads, test clips, matched batteries, user manual, calibration certificate, spare fuses and a shockproof portable carrying case for easy transportation and field use.
Q6: Why use four-wire testing mode?
A: The 4-terminal test method effectively excludes the interference caused by wire resistance and contact resistance, ensuring accurate measuring results for micro-resistance.
Q7: Is the calibration certificate provided for overseas project acceptance?
A: Definitely. We will issue an official factory calibration certificate together with the goods, which meets international standards and can be used for EPC power project inspection and acceptance worldwide.
Q8: What are the overall size and weight of the micro ohmmeter?
A: Overall dimension: 300×255×150 mm; Net weight: about 4.5 kg, portable for on-site power maintenance work.
Q9: Can this tester be used for new energy vehicle battery testing?
A: Yes. It can accurately test the contact resistance of battery cells and connecting busbars of electric vehicles to check the connection quality of battery packs.
Q10: Do you support bulk wholesale and customized orders?
A: We are professional manufacturer and wholesaler. We support bulk orders, OEM customization and global fast delivery, with full-cycle technical support and after-sales service for overseas distributors and power engineering clients.
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