1. Introduction
This manual provides essential information for the proper installation, operation, and maintenance of your WH-SP-WD Wind Direction Meter and WH-SP-RG Rain Gauge. These units are designed as spare parts or extensions for professional weather stations, providing accurate data on wind direction and rainfall. Please read this manual thoroughly before use to ensure optimal performance and longevity of the devices.
2. Package Contents
The package includes the following components:
- 1 x Wind Direction Meter (Model: WH-SP-WD)
- 1 x Rain Gauge (Model: WH-SP-RG)
3. Specifications
| Feature | Specification |
|---|---|
| Model (Wind Direction Meter) | WH-SP-WD |
| Model (Rain Gauge) | WH-SP-RG |
| Output Type | Pulse |
| Rain Gauge Pulse Equivalent | 0.3mm per pulse |
| Material | Plastic |
| Color | White |
| Item Weight | 380g |
| Dimensions (L x W x H) | 18.5cm x 18.5cm x 13.5cm |
| Compatibility | Designed for Misol & WH-SP-RG Rain Gauge Meteorological Test Rain Gauge and compatible professional weather stations. |
4. Setup and Installation
These components are designed to integrate with an existing professional weather station system. Ensure your weather station is compatible with pulse output sensors.
- Mounting the Wind Direction Meter:
Securely attach the WH-SP-WD Wind Direction Meter to a stable pole or mounting arm, ensuring it is free from obstructions that could interfere with wind flow. The sensor should be oriented correctly to provide accurate readings.
Figure 2: Wind Direction Meter (WH-SP-WD). 
Figure 3: Underside of the Wind Direction Meter with its connection port. - Mounting the Rain Gauge:
Attach the WH-SP-RG Rain Gauge to a flat, level surface on the weather station assembly. Ensure it is positioned in an open area, away from buildings, trees, or other structures that could block rainfall or cause splashing.
Figure 4: Rain Gauge (WH-SP-RG). 
Figure 5: Side view of the Rain Gauge showing its cable connection. - Connecting to the Weather Station:
Connect the cables from both the Wind Direction Meter and the Rain Gauge to the appropriate input ports on your professional weather station console or data logger. These devices typically use an RJ11-like connector for pulse output. Refer to your main weather station's manual for specific connection details.
- Initial Calibration/Configuration:
After physical installation, consult your weather station's manual for any necessary calibration or configuration steps to recognize the new sensors and interpret their pulse signals correctly. For the rain gauge, one pulse corresponds to 0.3mm of rainfall.
5. Operation
Once properly installed and connected to a compatible weather station, the Wind Direction Meter and Rain Gauge operate continuously to provide meteorological data.
- Wind Direction Meter (WH-SP-WD): This sensor measures the prevailing wind direction. Its vane rotates to align with the wind, and the internal mechanism translates this physical orientation into an electrical signal (pulse) that your weather station interprets.
- Rain Gauge (WH-SP-RG): This sensor measures rainfall using a tipping bucket mechanism. When a specific amount of rain (0.3mm) collects in one side of the bucket, it tips, sending a pulse signal to the weather station, and the other side begins to fill. The weather station counts these pulses to calculate total rainfall.
Data collection and display are managed by your main weather station console. Refer to its manual for information on viewing, logging, and analyzing the data from these sensors.
6. Maintenance
Regular maintenance ensures accurate readings and extends the lifespan of your sensors.
- Cleaning: Periodically inspect both sensors for dirt, dust, leaves, or insect nests. Gently clean the exterior of the plastic housing with a soft, damp cloth. For the rain gauge, ensure the tipping bucket mechanism is free of debris to prevent blockages and inaccurate readings.
- Obstruction Check: Ensure no new obstructions (e.g., growing vegetation, new structures) are interfering with the wind direction meter's rotation or the rain gauge's exposure to rainfall.
- Connection Check: Annually, or if data becomes erratic, check all cable connections for corrosion or damage and ensure they are securely plugged into the weather station.
- Winter Care: In areas with heavy snowfall or freezing rain, ensure the sensors are clear of ice and snow accumulation. While designed for outdoor use, extreme conditions can affect performance.
7. Troubleshooting
If you encounter issues with your Wind Direction Meter or Rain Gauge, consider the following:
- No Data/Inaccurate Readings:
- Verify all cables are securely connected to both the sensors and the main weather station.
- Check for physical obstructions around the sensors (e.g., debris in the rain gauge, stuck wind vane).
- Ensure the sensors are mounted correctly and level (especially the rain gauge).
- Consult your main weather station's manual for sensor-specific troubleshooting or recalibration procedures.
- Wind Direction Not Changing:
- Check if the wind vane is physically stuck or obstructed.
- Ensure there is actual wind present.
- Rainfall Readings Incorrect:
- Inspect the tipping bucket mechanism for debris or blockages.
- Confirm the rain gauge is level.
- Verify the weather station's settings for the rain gauge pulse value (should be 0.3mm).
8. User Tips
- Compatibility Check: Always confirm that these specific models (WH-SP-WD and WH-SP-RG) are compatible with your existing weather station before purchase and installation.
- Optimal Placement: For the most accurate readings, mount the sensors in an open area, away from tall structures or trees that could create wind turbulence or block rainfall.
- Secure Mounting: Ensure all mounting hardware is tightened securely to prevent movement during high winds or storms, which could affect data accuracy or damage the sensors.
9. Warranty and Support
For any questions, technical assistance, or support regarding your Wind Direction Meter or Rain Gauge, please contact the seller or manufacturer directly. Keep your purchase records for reference.
