The ETCR EM3660A micro-ohmmeter, also known as a DC resistance tester or low-value DC resistance tester, utilizes microprocessor technology and a precise four-wire method for accurate and reliable testing. It is primarily used to measure the winding resistance of small transformers; ground resistance; cable conductor resistance; contact resistance of switches, connectors, and relays; metal riveting resistance; winding resistance of coils, motors, and transformers; connection resistance between metal components; resistance of welded joints; resistance of parallel battery connections; and wire length measurement and calculation. The meter's housing is housed in a waterproof protective case, providing impact resistance, drop resistance, and waterproofing (IP65 protection rating), making it rugged, safe, and durable. It also includes a large-capacity rechargeable lithium battery pack, making it particularly suitable for outdoor construction sites. It is widely used in construction quality inspection stations, supervision companies, construction units, lightning protection companies, power companies, and shipbuilding and locomotive factories.

The meter offers both automatic and manual measurement modes. In automatic mode, the meter automatically selects the range and test current level. In manual mode, the user can select the range and current level to meet diverse application requirements. The meter also features a clock, alarm, and auto-off functions.

The ETCR EM3660A DC resistance tester consists of a main unit, test leads, a charger, and a USB communication cable. The meter features a 5-inch color touchscreen display with both touchscreen and push-button operation. The test range, resistance value, and current are displayed simultaneously. The meter also features Bluetooth communication, allowing users to view test results on their phone after installing the app, making it particularly convenient for on-site use. The meter can store 1,000 data sets and connects to a computer via a USB port and monitoring software. The software provides historical data reading, review, storage, and reporting capabilities.

Product Features

1. Maximum test current of 10A, wide range: 1.0uΩ to 2500Ω, and high resolution of 0.1uΩ.

2. Two measurement modes: Automatic measurement mode automatically selects the test current based on the load. Manual measurement mode offers five test current ranges: 10A, 1A, 100mA, 10mA, and 1mA. 3. Features a 5-inch true-color LCD touchscreen, offering dual touchscreen and keypad operation.

4. Features a 75°C resistance conversion function, compensating for the temperature and material of the test sample.

5. Features an alarm function with a programmable resistance alarm value.

6. Features an automatic shutdown function, which automatically shuts down after 15 minutes of inactivity.

7. Features Bluetooth communication, allowing you to view test results on your phone after installing the app.

8. Features a USB port and host software for computer communication, allowing you to download recorded data for management, analysis, and printing.

1. Measurement range and accuracy

2. Other specifications