1. Introduction
The Garosa PH-803W is a dual-measurement PH and ORP controller designed for continuous water quality monitoring. This device provides real-time readings of both pH and Oxidation-Reduction Potential (ORP) values, making it suitable for various applications such as aquariums, hydroponics, laboratories, and industrial water treatment. It features BNC socket electrodes for easy connection and two output power sockets for controlling external devices.
Figure 1: Overview of the PH-803W PH ORP Controller, including the main unit, electrodes, and power outlet.
2. Product Features
- Dual Measurement Display: Simultaneously measures and displays PH value (0.00 to 14.00) and ORP value (-1999 to 1999 mV).
- Real-time Monitoring: Adopts a real-time measurement method for continuous data display.
- Easy Operation: No need to press buttons to switch between PH and ORP measurement values.
- Integrated Control: 2-in-1 PH and ORP controller with BNC socket electrodes and two output power sockets for external device control.
- Durable Construction: Made from high-quality ABS material for longevity.
- AC Powered: Designed for long-term, continuous water quality monitoring and control.
Figure 2: The controller's display shows both PH and ORP values simultaneously.
3. Package Contents
Verify that all items are present in the package:
- 1 x ORP/PH Water Quality Detector (Main Unit)
- 1 x ORP Pole Test Pen (Electrode)
- 1 x PH Pole Test Pen (Electrode)
- 2 x Suction Cups
- 1 x Hook
- 1 x User Manual
4. Specifications
| Parameter | Value |
|---|---|
| Model | PH-803W |
| Material | ABS |
| Measuring Range (ORP) | -1999~1999mV |
| Measuring Range (PH) | 0.00~14.00PH |
| Accuracy (ORP) | ±5mV |
| Accuracy (PH) | 0.05PH |
| Resolution (ORP) | 1mV |
| Resolution (PH) | 0.01PH |
| Setting Control Range (ORP) | -1999~1999mV |
| Setting Control Range (PH) | 0.00~19.99PH |
| Operating Environment Temperature | 0-50℃ |
| Operating Environment Humidity | <95% RH |
| Display | 4-digit LCD display |
| Power Supply | AC 110V (US Plug) |
| Product Dimensions | 35 x 23 x 7 cm |
| Item Weight | 1.35 kg |
5. Setup Instructions
- Power Connection: Plug the controller into a standard 110V AC power outlet. Turn on the device.
- Electrode Connection: Connect the PH electrode and the ORP electrode to their respective BNC sockets on the controller. Ensure connections are secure.
- Remove Protective Covers: Carefully remove the protective covers from both the PH and ORP electrodes. Caution: Avoid touching the glass bulb of the electrode with bare hands, as it is fragile and can be damaged by impact or contamination.
- Initial Electrode Cleaning: Before first use, or if the electrodes have been stored dry, rinse them with distilled water or alcohol. Gently wipe the plastic shell and shake off any small water droplets from the electrode tip to prevent interference with test results.
- WiFi Configuration (Optional): The device supports WiFi connectivity for real-time monitoring via a mobile application. Long press the 'ESC WIFI' button to enter WiFi network configuration mode. Follow the instructions in the mobile application to connect the device to your network. Note: The mobile application is compatible with Android devices only.
Figure 3: The controller is powered by an AC outlet for continuous operation.
Figure 4: The controller can connect to a mobile application via WiFi for remote monitoring (Android only).
6. Operating Instructions
- Immersion: Insert the electrodes into the solution to be measured, ensuring that the measuring electrodes are fully immersed.
- Measurement: Gently shake the electrodes to dislodge any small air bubbles that may be clinging to the electrode surface. Wait for the display numbers to stabilize before taking a reading. The PH and ORP values will be displayed simultaneously.
- Real-time Monitoring: The device continuously displays the PH and ORP values. No button presses are required to switch between measurements.
- Mobile App Monitoring: If configured, use the dedicated mobile application on your Android device to view real-time data and water quality changes remotely.
- Output Control: The two output power sockets can be used to connect and control external devices (e.g., solenoid valves, pumps) based on the measured PH and ORP values, according to your configured settings.
Figure 5: Real-time monitoring of water quality data is available on the device and via a mobile application.
Figure 6: Example setup demonstrating simultaneous PH/ORP measurement and output control in an aquarium environment.
7. Maintenance
- After Use: After each measurement, unplug the power supply. Clean the electrodes thoroughly with clean water (preferably distilled water) and replace their protective covers.
- Electrode Storage: Store electrodes with their protective caps filled with a suitable storage solution (e.g., KCL solution) or distilled water to prevent drying out. Never store electrodes dry.
- Long-term Use: For continuous, long-term monitoring, ensure the instrument and electrodes are securely fixed in place to prevent accidental damage or displacement.
- Calibration: Regular calibration of the PH and ORP electrodes is essential for maintaining accuracy. Refer to the calibration section (if available in a separate guide) or the device's on-screen prompts for calibration procedures.
8. Troubleshooting
- Inaccurate Readings: Ensure electrodes are clean and properly calibrated. Check for air bubbles on the electrode surface during measurement.
- No Display: Verify the power supply is connected and the device is turned on. Check for any loose connections.
- Unstable Readings: Ensure the electrodes are fully immersed and the solution is not agitated excessively. Allow sufficient time for readings to stabilize.
- WiFi Connection Issues: Confirm your WiFi network is active and the password is correct. Ensure the device is within range of the WiFi router. Remember the mobile app is for Android devices only.
- Electrode Damage: If readings remain erratic or impossible to calibrate, the electrodes may be damaged or have reached the end of their lifespan and require replacement.
9. Warranty Information
This product is covered by a standard manufacturer's warranty against defects in materials and workmanship. The warranty period typically begins from the date of purchase. Please retain your proof of purchase for warranty claims. For specific warranty terms and conditions, refer to the documentation provided with your purchase or contact customer support.
10. Customer Support
For technical assistance, troubleshooting, or inquiries regarding your Garosa PH-803W PH ORP Controller, please contact Garosa customer support. Contact information can typically be found on the product packaging, the official Garosa website, or through your retailer.