
The OWON CMS Series includes the CMS101 with 1000A current measurement capability and the CMS061 with 600A current measurement capability. The instruments combine a 20,000-count True RMS digital clamp meter with a single-channel oscilloscope and recorder function. Measurement capabilities include AC/DC voltage, AC/DC current, inrush current, resistance, capacitance, frequency, and duty cycle. The oscilloscope supports both voltage and current waveform measurement with a maximum real-time sampling rate of 5.0 MSa/s, 1 MHz voltage bandwidth, and 1 kHz current bandwidth. Bluetooth communication allows the instrument to connect with a smartphone for remote control, waveform and measurement-data viewing, chart display, analysis, and CSV data storage. Additional features include NCV detection, digital hold, zeroing, input protection, automatic power-off, backlight, and a rechargeable 18650 lithium battery.
| Models | Available Models | CMS101, CMS061 |
| Current Measurement | Maximum DC Current | 1000 A (CMS101); 600 A (CMS061) |
| Maximum AC Current | 1000 A (CMS101); 600 A (CMS061) | |
| Low Current Range | 20.00 A | |
| Intermediate Current Range | 200.0 A | |
| DC Current Accuracy | 20 A Range | ±(2.0% + 10 digits) |
| 200 A / Maximum Range | ±(2.0% + 5 digits) | |
| AC Current Accuracy | 20 A Range | ±(3.0% + 10 digits) |
| 200 A / Maximum Range | ±(2.5% + 5 digits) | |
| Inrush Current | Measurement | 20.00 A and 200.0 A / maximum current range |
| Accuracy | ±(10.0% + 10 digits) on 20 A range | |
| DC Voltage | Measurement Range | 20.000 mV to 1000 V |
| Accuracy | Up to ±(0.1% + 5 digits) | |
| AC Voltage | Measurement Range | 200.00 mV to 1000.0 V |
| Accuracy | Up to ±(0.6% + 10 digits) | |
| Resistance | Measurement Range | 200 Ω to 100 MΩ |
| Accuracy | Up to ±(0.3% + 5 digits) | |
| Capacitance | Measurement Range | 2 nF to 20 mF |
| Accuracy | Up to ±(3.0% + 10 digits) | |
| Frequency | Measurement Range | 200 Hz to 20 MHz |
| Accuracy | ±(0.1% + 5 digits) | |
| Duty Cycle | Measurement Range | 0.1% to 99.9% |
| Oscilloscope | Channels | 1 |
| Voltage Bandwidth | 1 MHz | |
| Current Bandwidth | 1 kHz | |
| Sampling Rate | 5.0 MSa/s real-time | |
| Input Impedance | ≥10 MΩ | |
| Maximum Input Voltage | 1000 V | |
| Maximum Sample Current | 1000 A | |
| Time Base | 2.5 μs/div to 10 s/div | |
| Voltage Sensitivity | 30 mV/div to 500 V/div | |
| Waveform Measurements | RMS, Period, Frequency, Max, Min, Peak-to-Peak, Average | |
| Trigger Mode | Auto | |
| Trigger Type | Rising edge, Falling edge | |
| Recorder | Recorder Function | Measurement data recording, analysis, comparison, and storage |
| Communication | Bluetooth | Supported |
| Mobile App | Supported Platforms | Android and iOS |
| Functions | Remote control, measurement display, data charts, analysis, and CSV storage | |
| Display | Display | 2.8-inch IPS LCD |
| Display Modes | Dual-theme display | |
| Safety | NCV | Non-contact voltage detection |
| Protection | Input Protection | Supported |
| Functions | True RMS | Supported |
| Zeroing | Supported | |
| Digital Hold | Supported | |
| Automatic Power Off | Approximately 10 minutes by default; can be canceled | |
| Power | Battery | Single 18650 3.7 V rechargeable lithium battery |
| Mechanical | CMS101 Dimensions | 248 × 94.5 × 37.8 mm |
| CMS061 Dimensions | 233 × 94.5 × 37.8 mm |