1. Introduction and Overview
The UNI-T UT217A and UT217B are high-performance measurement tools that integrate both oscilloscope and clamp multimeter functions into a single device. These meters are designed for a wide range of applications, including power system detection, maintenance work, and use in fields such as electricity, industrial manufacturing, new energy, and automotive diagnostics.
The high-end models can measure AC/DC voltages up to 1000V and AC/DC currents up to 600A (UT217A) or 1000A (UT217B). The integrated oscilloscope function allows users to observe and analyze the waveform, amplitude, and frequency of electrical signals, providing comprehensive diagnostic capabilities. Key features include a 2.8-inch high-definition LCD with dual theme display, Bluetooth connectivity for mobile app integration, surge current measurement, and a durable, ergonomic design.
2. Setup
2.1 Initial Charging
The UT217 series clamp meters feature a built-in 3.7V 2600mAh rechargeable lithium battery, providing long-lasting endurance. Before first use, ensure the device is fully charged using the provided Type-C charging cable.
2.2 Power On/Off and Mode Switching
To power on the device, short press the power button. To power off, long press the power button. After powering on, a short press of the function page switch key allows you to switch between oscilloscope and multimeter modes.
2.3 Jaw Opening
The UT217A features a 31mm jaw opening, while the UT217B has a 38mm jaw opening. The narrow-edge elongated opening design is suitable for measuring in tight spaces and around larger wire diameters, ensuring flexibility and applicability.
3. Operating Instructions
3.1 General Operation and Display
The device is fully button-operated, allowing for quick one-handed switching between functions. It features a 2.8-inch high-definition LCD display screen with a color display and two display modes. This dual theme display adapts to different lighting environments, ensuring clear readings and rich visual information.
3.2 High Voltage Warning
For safety, when the measured voltage exceeds 42V/DC safe voltage, the instrument screen will display a high voltage warning symbol (a red lightning bolt) and a red alert at the top of the interface. Always pay attention to these warnings and follow safety protocols.
3.3 Oscilloscope Function
The oscilloscope function allows for the measurement of current and voltage waveforms. It provides detailed analysis of electrical signals, including waveform shape, amplitude, frequency, period, and pulse width. This is crucial for engineers in circuit design and debugging.
- Bandwidth: Voltage 1MHz, Current 1KHz
- Real-time sampling rate: 5.0 MSa/s
- Maximum input voltage: 1000V
- Maximum sampling current: UT217A: 600A, UT217B: 1000A
Applications include current waveform measurement, voltage waveform measurement, electronic maintenance, three-phase voltage measurement, and general current measurement.
3.4 Multimeter Functions
The UT217 series offers a 20000-count true effective value (True RMS) automatic range clamp meter. It supports a wide array of measurements:
- AC/DC Voltage up to 1000V
- AC/DC Current up to 600A (UT217A) / 1000A (UT217B)
- Resistance, Capacitance, Frequency, Duty Cycle
- Diode and Continuity tests
- Non-Contact Voltage (NCV) detection
The automatic range feature and intelligent burn protection make it a convenient and practical tool for various electrical and electronic tasks.
3.5 NCV Function
The Non-Contact Voltage (NCV) detection function enhances safety and operational convenience. It allows you to locate electrical faults, such as breaks or short circuits, without needing to disassemble the entire circuit, minimizing risk and effort.
3.6 Surge Current Measurement
The device can monitor surge currents (AC current only), detecting abnormal high current peaks during equipment startup. This feature helps in taking timely measures to protect sensitive electronic devices from potential damage caused by inrush currents.
3.7 Frequency/Duty Cycle Measurement
The meter supports frequency measurement from 1-20V up to 20.000MHz, and for high voltage, it measures frequency from 40-1kHz, while also displaying the duty cycle. This ensures normal operation of electrical equipment, protects sensitive devices, and helps maintain power system stability.
3.8 Bluetooth App Connectivity
The entire series comes standard with mobile analysis software. Users can connect the device to a mobile app via Bluetooth for real-time transmission of measurement results. The app allows for data analysis and storage of multimeter function data in CSV format for later viewing and detailed review.
4. User Tips
- Battery Check: The UT217 series includes a built-in rechargeable lithium battery. If you encounter issues with power, ensure the device is fully charged via the Type-C port.
- Data Logging: Maximize the utility of your clamp meter by connecting it to the mobile app via Bluetooth. This allows for real-time data transmission, analysis, and convenient export of measurement data in CSV format for detailed record-keeping and review.
- Safety First: Always observe the 42V high voltage warning displayed on the screen when measuring voltages above this threshold. Prioritize safety by wearing appropriate personal protective equipment, such as insulated gloves, when working with live circuits.
5. Troubleshooting
If you encounter issues with your UNI-T UT217 series clamp meter, consider the following basic troubleshooting steps:
- Device Not Powering On: Ensure the internal rechargeable battery is fully charged. Connect the device to a Type-C charger and allow sufficient time for charging.
- Inconsistent or Incorrect Readings:
- Check that the test leads are securely connected to the correct input jacks.
- Verify that the measurement mode selected on the device matches the type of measurement you are performing (e.g., AC voltage, DC current, oscilloscope mode).
- Ensure the clamp jaw is fully closed around the conductor for current measurements.
- For voltage measurements, confirm proper contact with the circuit points.
- Bluetooth Connectivity Issues:
- Ensure Bluetooth is enabled on both the clamp meter and your mobile device.
- Make sure the mobile app is installed and updated to the latest version.
- Try restarting both the clamp meter and your mobile device.
- Ensure the devices are within the effective Bluetooth range.
- Display Problems: If the display is dim or unreadable, adjust the display theme settings to better suit your lighting environment.
For more detailed troubleshooting or persistent issues, please refer to the comprehensive user manual included with your product or contact UNI-T customer support.
6. Specifications
6.1 General Specifications
- Brand Name: UNI-T
- Model Number: UT217A, UT217B
- UNI-T Model: UT217
- DIY Supplies: Electrical
- Origin: Mainland China
- Certification: CE, FCC, RoHS, UL, KC, PSE, WEEE
- Battery Included: No (features a built-in rechargeable battery)
- High-concerned chemical: None
6.2 Detailed Specifications
| Function | Range (UT217A) | Range (UT217B) | Resolution | Accuracy |
|---|---|---|---|---|
| DC Voltage | 20.000mV, 200.00mV, 2.000V, 20.00V, 200.0V, 1000V | 20.000mV, 200.00mV, 2.000V, 20.00V, 200.0V, 1000V | 0.001mV, 0.01mV, 0.001V, 0.01V, 0.1V, 1V | ±(0.1%+20dig), ±(0.1%+5dig) |
| AC Voltage | 20.000mV, 200.00mV, 2.000V, 20.00V, 200.0V, 1000V | 20.000mV, 200.00mV, 2.000V, 20.00V, 200.0V, 1000V | 0.001mV, 0.01mV, 0.001V, 0.01V, 0.1V, 1V | ±(0.8%+10dig) (Frequency: 40Hz-1000Hz) |
| DC Current | 20.00A, 200.0A, 600A | 20.00A, 200.0A, 1000A | 0.01A, 0.1A, 1A | ±(2.0%+10dig) |
| AC Current | 20.00A, 200.0A, 600A | 20.00A, 200.0A, 1000A | 0.01A, 0.1A, 1A | ±(1.9%+10dig) (Frequency: 40Hz-1000Hz) |
| Surge Current | 200.0A, 600A | 200.0A, 1000A | 0.1A, 1A | ±(3.0%+10dig) (Frequency: 40Hz-1000Hz) |
| Resistance | 200.00Ω, 2.000kΩ, 20.00kΩ, 200.0kΩ, 2.000MΩ, 20.00MΩ, 100.00MΩ | 200.00Ω, 2.000kΩ, 20.00kΩ, 200.0kΩ, 2.000MΩ, 20.00MΩ, 100.00MΩ | 0.01Ω, 0.001kΩ, 0.01kΩ, 0.1kΩ, 0.001MΩ, 0.01MΩ, 0.1MΩ | ±(0.3%+10dig), ±(0.5%+3dig), ±(3.0%+10dig) |
| Capacitance | 20nF/200nF/2μF/20μF/200μF/2mF/20mF | 20nF/200nF/2μF/20μF/200μF/2mF/20mF | 0.001nF | ±(3.0%+10dig) |
| Frequency | 0.1%~99.9% (typical 1V) ±(1.0%+10dig) | 0.1%~99.9% (typical 1V) ±(1.0%+10dig) | 0.001Hz | ±(1.0%+10dig) |
| Duty Cycle | 0.1%~99.9% (≥1 KHz) | 0.1%~99.9% (≥1 KHz) | 0.1% | Open circuit voltage: 3.7V |
| Diode/On/Off | 0~200.0Ω | 0~200.0Ω | Buzzer limit 60Ω; 00.0Ω displays measurement values, exceeding will show 'OL' | |
| NCV |
| Feature | UT217A | UT217B |
|---|---|---|
| Bandwidth | Voltage: 1MHz, Current: 1KHz | Voltage: 1MHz, Current: 1KHz |
| Real-time sampling rate | 5.0 MSa/s | 5.0 MSa/s |
| Number of channels | 1 | 1 |
| Input impedance | ≥10 MΩ | ≥10 MΩ |
| Maximum input voltage | Maximum peak current 600.0V | Maximum peak current 1000V |
| Maximum sampling current | 600A | 1000A |
| Scanning speed | 2.5 div/s ~ 25 div/s | 2.5 div/s ~ 25 div/s |
| Time base accuracy | ±(0.01%+10dig) | ±(0.01%+10dig) |
| Sensitivity | 30 mV/div ~ 500 V/div | 30 mV/div ~ 500 V/div |
| Displacement range | ±8 div case | ±8 div case |
| Sensitivity accuracy | ±(2.0%+10dig) | ±(2.0%+10dig) |
| Measurement value | Effective value, maximum value, minimum value, peak-to-peak value, average value. | Effective value, maximum value, minimum value, peak-to-peak value, average value. |
| Trigger type | Rising edge, falling edge | Rising edge, falling edge |
| Bluetooth communication | ✓ | ✓ |
| Auto-meter | ✓ | ✓ |
| True effective value | ✓ | ✓ |
| Display mode | DMM/OSC | DMM/OSC |
| Zero measurement | ✓ | ✓ |
| Input protection |
7. Maintenance
To ensure the longevity and accurate performance of your UNI-T UT217 series clamp meter, follow these maintenance guidelines:
- Cleaning: Regularly clean the device with a soft, dry cloth. Do not use abrasive cleaners or solvents, as these can damage the casing or display.
- Battery Care: The built-in lithium battery should be charged regularly, even if the device is not in frequent use, to maintain battery health. Avoid fully discharging the battery for extended periods.
- Storage: Store the clamp meter in a cool, dry place, away from direct sunlight, extreme temperatures, and high humidity. If storing for a long period, ensure the battery is partially charged (around 50%) and recharge it every few months.
- Avoid Impact: Protect the device from drops and impacts, which can damage internal components or the display.
- Calibration: For professional applications requiring high accuracy, periodic calibration by authorized service centers is recommended.
8. Warranty and Support
UNI-T products are manufactured to high-quality standards and come with a standard warranty. For specific warranty terms and conditions, please refer to the warranty certificate included in your product packaging. For technical support, service, or to learn more about UNI-T products, please visit the official UNI-T website at www.uni-trend.com.cn.
