1. Úvod
This manual provides essential information for the proper installation, operation, and maintenance of the WINGONEER 50Kg Body Load Cell Weighing Sensor. This half-bridge strain gauge sensor is designed for various weighing applications, particularly suitable for DIY projects involving microcontrollers like Arduino. Please read this manual thoroughly before use to ensure safe and effective operation.
2. Konec produktuview
The WINGONEER 50Kg Body Load Cell is a compact and robust weighing sensor. It operates on the principle of resistance strain, where the electrical resistance changes in proportion to the applied mechanical stress. This sensor is configured as a half-bridge, requiring an external full-bridge circuit or two such sensors to form a full bridge for accurate measurement.
Obrázek 1: Shora dolů view of the WINGONEER 50Kg Body Load Cell with attached wires. The sensor features a central load-bearing element and four color-coded wires for connection.
Obrázek 2: Spodní část view of the WINGONEER 50Kg Body Load Cell, illustrating the structural design and mounting points for secure installation.
Obrázek 3: Úhlové view of the WINGONEER 50Kg Body Load Cell, showcasing its overall form factor and wire connections.
3. Specifikace
| Parametr | Hodnota |
|---|---|
| Kapacita | 50 kg |
| Typ | Half-Bridge Strain Gauge |
| Výstupní citlivost | 1.0 ± 0.1 mV/V |
| Nelinearita | 0.05 % FS |
| Hystereze | 0.05 % FS |
| Opakovatelnost | 0.05 % FS |
| Creep (30 min) | 0.05 % FS |
| Temperature Effect on Zero | 0.05% F.S./10°C |
| Temperature Effect on Span | 0.05% F.S./10°C |
| Vstupní odpor | 1000 ± 10 Ohm |
| Výstupní odpor | 1000 ± 10 Ohm |
| Izolační odpor | ≥ 2000 MΩ (100VDC) |
| Provozní teplota | -10°C až +50°C |
| Recommended Excitation Voltage | 5-10 V DC |
| Maximální buzení svtage | 15 V DC |
| Materiál | Hliníková slitina |
| Elektroinstalace | Red (E+), Black (E-), White (O-), Green (O+) |
4. Nastavení
4.1 Mounting the Load Cell
Securely mount the load cell to a stable, rigid surface using appropriate fasteners. Ensure that the load is applied directly to the designated sensing area of the load cell. Avoid applying off-center or twisting forces, as this can lead to inaccurate readings and potential damage.
4.2 Pokyny pro zapojení
The 50Kg Body Load Cell is a half-bridge sensor. To form a complete Wheatstone bridge for measurement, you will typically need two such half-bridge sensors or one half-bridge sensor combined with two fixed resistors. An HX711 ADC (Analog-to-Digital Converter) module is commonly used with these sensors for signal amplification and digital conversion.
The sensor has four color-coded wires:
- Červený: Excitation+ (E+)
- Černý: Excitation- (E-)
- Bílý: Output- (O-)
- Zelený: Output+ (O+)
When connecting to an HX711 module:
- Připojit Červený wire to E+ on HX711.
- Připojit Černý wire to E- on HX711.
- Připojit Bílý wire to A- on HX711.
- Připojit Zelený wire to A+ on HX711.
For a full-bridge configuration using two half-bridge sensors:
- Connect Red wires of both sensors together to the positive excitation voltage.
- Connect Black wires of both sensors together to the negative excitation voltage (ground).
- Connect the Green wire of the first sensor to the White wire of the second sensor. This connection point will be one of your differential outputs (e.g., A+ on HX711).
- Connect the White wire of the first sensor to the Green wire of the second sensor. This connection point will be your other differential output (e.g., A- on HX711).
Poznámka: Always refer to the specific documentation of your ADC module (e.g., HX711) for precise wiring diagrams and calibration procedures.
5. Návod k obsluze
5.1 Kalibrace
After wiring, calibration is crucial for accurate measurements. This typically involves:
- Nulová kalibrace: With no load on the sensor, take a reading. This establishes the baseline or 'tare' value.
- Kalibrace rozsahu: Apply a known weight (calibration weight) to the sensor and take a reading. Use this reading and the known weight to calculate the sensor's conversion factor (e.g., grams per ADC unit).
Most microcontroller libraries for HX711 or similar ADCs provide functions for these calibration steps.
5.2 Provádění měření
Once calibrated, the sensor will output a raw analog signal proportional to the applied load. The ADC module converts this into a digital value. Your microcontroller code will then apply the calibration factor to convert this digital value into a meaningful unit of weight (e.g., grams, kilograms).
Ensure the load is applied smoothly and centrally to the load cell for consistent readings. Avoid sudden impacts or vibrations during measurement.
6. Údržba
The WINGONEER 50Kg Body Load Cell is designed for durability and requires minimal maintenance. Follow these guidelines:
- Udržujte v čistotě: Regularly clean the sensor surface to prevent accumulation of dust or debris that could interfere with its operation. Use a soft, dry cloth.
- Vyvarujte se přetížení: Do not exceed the rated capacity of 50 kg. Overloading can permanently damage the strain gauges.
- Protect from Environment: While robust, protect the sensor from excessive moisture, extreme temperatures, and corrosive substances unless specifically designed for such environments.
- Zkontrolujte kabeláž: Periodically check the wiring for any signs of wear, fraying, or loose connections.
7. Řešení problémů
- Nepřesná čtení:
- Možná příčina: Nesprávná kalibrace. Řešení: Re-calibrate the sensor following the steps in Section 5.1.
- Možná příčina: Unstable mounting or off-center load. Řešení: Ensure the load cell is securely mounted and the load is applied centrally.
- Možná příčina: Elektrický šum. Řešení: Use shielded cables, keep signal wires away from power lines, and ensure stable power supply to the ADC and microcontroller.
- No Readings/Sensor Not Responding:
- Možná příčina: Nesprávné zapojení. Řešení: Double-check all wire connections against the diagram in Section 4.2.
- Možná příčina: Faulty ADC module or microcontroller. Řešení: Test the ADC module and microcontroller with a known working setup if possible.
- Možná příčina: Poškozený snímač zatížení. Řešení: Inspect the load cell for physical damage. If damaged, replacement may be necessary.
- Readings Drift Over Time:
- Možná příčina: Kolísání teploty. Řešení: Ensure the operating environment is stable. Some drift is inherent in strain gauges, but significant drift may indicate an issue.
- Možná příčina: Creep. Řešení: For long-term measurements, allow the sensor to stabilize under load before taking final readings.
8. Záruka a podpora
No specific warranty information is provided for this product. For technical support or inquiries, please refer to the vendor or manufacturer's contact information available at the point of purchase.