1. Introduction
Thank you for choosing the Generic KWS-DC28 DC Voltage Ammeter Power Tester. This device is designed to accurately measure DC voltage, current, power, and other electrical parameters. Please read this manual thoroughly before using the product to ensure safe and optimal operation.
2. Safety Information
WARNING:
- Do not exceed the specified voltage and current limits (DC 4-30V, 0-12A) to prevent damage to the device or connected equipment.
- Ensure correct polarity when connecting the device. Incorrect connections can cause damage.
- Keep the device away from water, moisture, and extreme temperatures.
- Do not attempt to disassemble or modify the device. Refer all servicing to qualified personnel.
- This device is not a toy. Keep out of reach of children.
3. Product Overview
The KWS-DC28 features a 0.96-inch HD digital display that shows real-time measurements of various electrical parameters. It is compact and designed for ease of use.
3.1 Front View and Display
Figure 1: Front view of the KWS-DC28 tester. The display shows voltage (V), current (A), power (W), accumulated charge (mAh), accumulated energy (mWh), and CPU temperature.
The front of the device features a clear digital display. Key indicators include:
- Voltage (V): Displays the DC voltage of the connected circuit.
- Current (A): Shows the DC current flowing through the circuit.
- Power (W): Indicates the real-time power consumption.
- Time (T): Measures the elapsed time of the measurement session.
- mAh: Accumulated charge in milliampere-hours.
- mWh: Accumulated energy in milliwatt-hours.
- CPU: Internal CPU temperature.
3.2 Rear View and Specifications
Figure 2: Rear view of the KWS-DC28 tester. The label indicates the model number KWS-DC28, voltage range DC 4-30V, and current range 0-12A.
The rear of the device provides essential identification and operational limits:
- Model: KWS-DC28
- Voltage Range: DC 4-30V
- Current Range: 0-12A
- Certifications: CE, RoHS
4. Specifications
| Parameter | Value |
|---|---|
| Model | KWS-DC28 |
| Display | 0.96 Inch HD Digital Display |
| Voltage Measurement Range | DC 4-30V |
| Current Measurement Range | 0-12A |
| Power Measurement Range | 0-360W (Calculated from V*A) |
| Time Measurement Range | 0-99 hours 59 minutes 59 seconds |
| Charge Accumulation Range | 0-99999 mAh |
| Energy Accumulation Range | 0-99999 mWh |
| Operating Temperature | Standard |
| Material | Metal, Electronic Components |
5. Setup and Connection
The KWS-DC28 is designed for inline measurement. Follow these steps to connect the device:
- Identify Input and Output: The device typically has a male connector on one end (input) and a female connector on the other (output). Ensure you connect the power source to the input and the load (device to be tested) to the output.
- Connect Power Source: Plug the male connector of the KWS-DC28 into your DC power source (e.g., USB charger, power adapter).
- Connect Load: Plug the device you wish to test (e.g., mobile phone, USB fan) into the female connector of the KWS-DC28.
- Verify Display: Once connected, the display should illuminate and show real-time voltage, current, and other parameters.
Important: Always ensure the voltage and current of your power source and load are within the KWS-DC28's specified operating ranges (DC 4-30V, 0-12A).
6. Operation
Once connected, the KWS-DC28 operates automatically, displaying real-time data. There are no complex settings or buttons for basic operation.
- Real-time Monitoring: The display continuously updates with current voltage, current, and power readings.
- Accumulated Data: The device automatically accumulates charge (mAh) and energy (mWh) over time. This data is useful for testing battery capacities or device consumption over a period.
- Resetting Accumulated Data: To reset the accumulated mAh and mWh values, disconnect the power from the KWS-DC28 for a few seconds, then reconnect it. The values will reset to zero.
The small button on the side (if present, not clearly visible in images but common for such devices) might be used to cycle through display modes or reset data. If your unit has a button, gently press it to observe its function. Typically, a short press cycles display, a long press resets accumulated data.
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the device. Do not use abrasive cleaners or solvents.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Handling: Avoid dropping the device or subjecting it to strong impacts.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Display is blank | No power, incorrect connection, or voltage too low. | Ensure the power source is active. Check connections for correct polarity. Verify input voltage is within DC 4-30V. |
| Incorrect readings | Faulty connection, device malfunction. | Reconnect the device. Test with a known good power source and load. If problem persists, contact support. |
| Accumulated data not resetting | Device not fully powered off. | Completely disconnect the device from power for several seconds before reconnecting. |
| Device gets hot | Operating near maximum current/power, poor ventilation. | Ensure adequate ventilation. Reduce load if possible. If overheating persists at normal loads, discontinue use and contact support. |
9. Warranty and Customer Support
This product comes with a standard manufacturer's warranty. For specific warranty terms and conditions, please refer to the documentation provided at the time of purchase or contact your retailer.
For technical assistance, troubleshooting, or any questions regarding your KWS-DC28 tester, please contact our customer support team. We are committed to providing exceptional support to ensure your satisfaction.
Note: Information regarding specific warranty duration or contact details was not provided in the product description. Please refer to your purchase receipt or seller's information for precise details.
