1. Introduction
The Generic KWS-DC26 DC Power Meter is a high-precision instrument designed for measuring voltage, current, power, and energy consumption in direct current (DC) circuits. It is an essential tool for various applications, including battery performance testing, solar system monitoring, and electric vehicle charging station analysis. This manual provides detailed instructions for the proper setup, operation, and maintenance of your KWS-DC26 power meter.
2. Product Features
- High-Precision Measurement: Accurately measures voltage, current, power, and energy.
- Wide Voltage Range: Supports DC 8V to 80V input.
- Bidirectional Measurement: Capable of measuring both charge and discharge currents and power.
- Color LCD Display: Features a clear 51x30mm color LCD for easy reading of multiple parameters simultaneously.
- Data Logging: Includes power failure memory to retain recorded data.
- Multiple Alarm Indicators: Provides alerts for overvoltage, overcurrent, and overtemperature conditions.
- Real-time Temperature Monitoring: Equipped with a thermostat for monitoring product temperature.
- Versatile Connectivity: Available with various connector types (e.g., 3 pins 20A, XT60 25A, XT90 35A, Anderson 50A) to suit different applications.
3. Specifications
| Part Name | Battery Load Tester |
| Model | KWS-DC26 |
| Material | ABS |
| Voltage Measurement Range | DC 8-80V ±1% + 0.5V |
| Current Measurement Range | 0-20A / 0-50A (depending on connector type) ±1% + 0.2A |
| Power Measurement Range | 0-4000W ±1% + 2W |
| Energy Range | 0-99999Wh |
| Hour Range | 0-99999Ah |
| Timer Range | 99 days 59 hours |
| Temperature Measurement | -20°C to 99°C ±2% |
| Display | 51*30mm Color LCD |
| Power Failure Memory | Yes |
| Protection Functions | Overvoltage, Overcurrent, Overtemperature |
| Dimensions (L x W x H) | 3.94 x 3.15 x 1.57 inches |
| Item Weight | 3.49 ounces (99 Grams) |
4. Setup Instructions
Follow these steps to properly connect your KWS-DC26 DC Power Meter:
- Identify Terminals: The meter has clear input and output terminals, typically marked for positive (+) and negative (-) connections. Ensure you connect the power source to the input and the load to the output.
- Connect Power Source: Connect the positive terminal of your DC power source (e.g., battery, solar panel) to the positive input terminal of the meter. Connect the negative terminal of the power source to the negative input terminal of the meter.
- Connect Load: Connect the positive terminal of your DC load (e.g., electric vehicle, device under test) to the positive output terminal of the meter. Connect the negative terminal of the load to the negative output terminal of the meter.
- Ensure Correct Polarity: Double-check all connections to ensure correct polarity. Incorrect polarity can damage the device or the connected equipment.
- Connect Thermostat (Optional): If real-time temperature monitoring is desired, connect the provided thermostat probe to the designated port on the meter. Position the probe to monitor the temperature of the product or environment you wish to measure.
The KWS-DC26 is compatible with various devices and connector types. Ensure the connector type matches your application's current requirements (e.g., 3 pins 20A, XT60 25A, XT90 35A, Anderson 50A).
5. Operating Instructions
Once properly connected, the KWS-DC26 meter will automatically power on and begin displaying measurements.
5.1 Display Overview
The color LCD displays various parameters simultaneously:
- Voltage (V): Current DC voltage.
- Current (A): Current DC amperage. Arrows indicate direction (charge/discharge).
- Power (W): Instantaneous power consumption/generation.
- Energy (Wh): Accumulated energy in Watt-hours.
- Capacity (Ah): Accumulated charge/discharge capacity in Ampere-hours.
- Timer: Elapsed time of measurement.
- Temperature (°C): Real-time temperature from the connected thermostat.
5.2 Bidirectional Measurement
The meter automatically detects the direction of current flow. Arrows on the display will indicate whether current is flowing into (charging) or out of (discharging) the connected battery or system.
5.3 Alarms
The KWS-DC26 includes alarm indicators for:
- Overvoltage: Alerts if the voltage exceeds a safe limit.
- Overcurrent: Alerts if the current exceeds a safe limit.
- Overtemperature: Alerts if the monitored temperature exceeds a safe limit.
When an alarm triggers, the corresponding indicator on the display will activate. Address the cause of the alarm immediately to prevent damage to the meter or connected equipment.
5.4 Data Logging and Memory
The meter continuously logs energy (Wh) and capacity (Ah) data. In case of power loss, the built-in power failure memory ensures that accumulated data is retained. The timer function tracks the duration of the measurement session.
5.5 Clearing Data
The meter features a 'Time clear' function, which typically allows you to reset the accumulated energy (Wh), capacity (Ah), and timer data. Refer to the device's physical buttons or on-screen menu (if applicable) for specific instructions on how to perform a data clear.
6. Maintenance
To ensure the longevity and accurate performance of your KWS-DC26 DC Power Meter, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the device. Do not use abrasive cleaners or solvents.
- Storage: Store the meter in a cool, dry place away from direct sunlight and extreme temperatures.
- Handling: Handle the device with care to avoid physical damage. Do not drop or expose it to excessive vibration.
- Connections: Periodically check all connections for tightness and signs of wear or corrosion.
7. Troubleshooting
If you encounter issues with your KWS-DC26 DC Power Meter, refer to the following troubleshooting tips:
- No Display:
- Ensure the meter is correctly connected to a DC power source within the 8-80V range.
- Check all wiring for secure connections and correct polarity.
- Inaccurate Readings:
- Verify that the meter's current rating matches the expected current of your application.
- Ensure all connections are clean and tight to minimize resistance.
- Confirm that the power source and load are functioning correctly.
- Alarm Triggering:
- Overvoltage: The input voltage is too high. Reduce the voltage or use a different power source.
- Overcurrent: The current draw is too high. Reduce the load or ensure the meter's current rating is sufficient for the application.
- Overtemperature: The device or environment is too hot. Ensure adequate ventilation and reduce load if necessary.
- Data Not Clearing:
- Refer to the specific instructions for your model on how to perform a data reset. This may involve pressing and holding a button or navigating a menu.
8. Warranty and Support
Specific warranty details and customer support contact information are not provided in the product description. Please refer to your purchase documentation or contact the seller directly for information regarding warranty coverage and technical assistance.
