
Product Series : DC Resistance Tester
For DC resistance measurement
Resistance Measurement Range: 0.1mΩ ~ 40kΩ
Measurement Gears: 400mΩ, 4Ω, 40Ω, 400Ω, 4kΩ, 40kΩ
Measurement Current: 100mA MAX
Data Storage: 1000 groups
Power Supply: 5 alkaline dry batteries (LR6 1.5V*6PCS)
Automatically shutdown function
Product Introduction
EM3630A Portable Milliohmmeter, also known as DC low resistance meter, DC resistance tester, ohmmeter. The instrument uses microprocessor technology, four-wire method of testing, which is safety, precision and reliability. It is mainly used for measuring the wire resistance of cables, the contact resistance of switches, connectors and relays, the low DC resistance of windings coils, motors and transformers line resistance, the connection resistance between metal rivets parts and metal components, and the connection resistance between conductors connected at ground grids poles. The meter is widely used in industrial and mining enterprises, building monitoring and supervision companies, building construction units, lightning protection companies, electric power sector, ship and locomotive factories, etc. EM3630A Portable Milliohmmeter consists of the host and test line. The host with large LCD display, clear and obvious, it can store 1000 groups of data at the same time. The resistance measure range is: 0.1mΩ ~ 40.0kΩ, the max. test current is: 100mA, the tester operate easy and carry.
ETCRMETER is a high-end brand of ETCR. All products are manufactured by ETCR, which also provides technical support and after-sales service.
Product Features
1. The portable structure design makes it convenient to carry. It automatically resets to zero and the operation is simple.
2. Adopts the precision four-wire method so that the test result is high accuracy and the minimum resolution is 0.1 mΩ.
3. Wide Measurement Range: 0.1 mΩ ~ 40.0 kΩ.
4. Storage Function: store 1000 groups of data.

Technical Parameters
1.Measurement Gear & Accuracy
| Gear | Accuracy | Resolution | Test Current |
| 400mΩ | ± 0.3% ± 4dgt | 0.1mΩ | 100mA |
| 4Ω | 1mΩ | 10mA | |
| 40Ω | 10mΩ | 10mA | |
| 400Ω | 0.1Ω | 0.8mA | |
| 4kΩ | 1Ω | 0.8mA | |
| 40kΩ | 10Ω | 0.08mA |
2.Technical Specification
| Specification Name | Parameters Description |
| Power Supply | 5 alkaline dry batteries (LR6 1.5V*6PCS) |
| Working Current | 100mA MAX |
| Detection Method | Precision 4-wire Method, 2-Channel A/D Simultaneous Detection |
| Measuring Range | 0.1mΩ~40.0kΩ |
| Test Interface | C1 current positive, C2 current negative, P1 voltage positive, P2 voltage negative |
| Measuring Time | 1 Second/Time |
| Data Storage | Yes, data will not be lost in case of power failure or battery replacement (1000 groups) |
| Backlight Function | Yes, for dimly lit places |
| Automatic Zeroing | When the test fixture is in short-circuit condition, press the zero button, the LCD display value of lcd will be adjusted to zero. |
| Automatic Shutdown Function | The meter will automatically shutdown after 10 minutes of no operation. |
| Display Mode | 58.5mm x 46mm |
| Host Dimension | 159mm × 100mm × 66mm |
| Weight | Instrument: Approx. 460g (Including Battery); |
| Line Voltage | Should be avoided (The line must not be energized for measurements, which may damage the instrument) |
| Overflow Display | Overflow Function: “OL” symbol display |
| Low Voltage Indication | A low battery symbol is displayed to remind battery replacement. |
| Working Temperature & Humidity | - 10℃~40℃; Below 80%RH |
| Storage Temperature & Humidity | - 10℃~60℃; Below 70%RH |
| Withstand Voltage | AC 3700V/rms (Between housing and screws) |
| Safety Standard | IEC61010-1, CAT Ⅲ 600V, pollution level 2, JJG724-1991 “DC Digital Ohmmeter Certification Regulations”, JJG166-1993 “DC Resistor Certification Regulations”, “DL/T967-2005 Circuit Resistance Tester and DC Resistance Quick Tester Certification Regulations”. |
Model Comparison
| Product Picture | Model | Resistance Range | Max. Resolution | Max. Teat Current | Display Mode | Storage Function | Power Supply |
![]() | EM3630A | 0.1mΩ~40kΩ | 0.1mΩ | 100mA | LCD Display | 1000 Groups | Dry cell batteries |
![]() | EM3640A | 1.0uΩ~40KΩ | 0.1uΩ | 1A | Color Touchscreen Display | 1000 Groups | Lithium batteries |
![]() | EM3660A | 1.0uΩ~2500.0Ω | 0.1uΩ | 10A | Color Touchscreen Display | 1000 Groups | Lithium batteries |
Product Video