PH-W3988 6-in-1 WiFi Water Quality Monitor User Manual

1. Introduction

The JUANJUAN PH-W3988 is a versatile 6-in-1 WiFi Water Quality Monitor designed for comprehensive analysis of various water parameters. This instrument is ideal for testing the water quality in drinking water, aquariums, hydroponic systems, swimming pools, and other applications. It accurately measures PH, EC, TDS, SALT, Specific Gravity (S.G), and Temperature, offering convenience and precision for water quality management.

With its APP remote control capability, users can monitor water quality data anytime, anywhere, directly from their smartphone. The device features a clear digital screen with backlight for easy reading and supports automatic data storage for up to 30 days within the companion application.

2. Product Features

• 6-in-1 Multifunction Tester: Measures PH, Electrical Conductivity (EC), Total Dissolved Solids (TDS), Salinity (SALT), Specific Gravity (S.G), and Temperature. Easily switch between parameters with the 'MODE' button.
• Temperature Unit Conversion: One-key conversion between Celsius (℃) and Fahrenheit (℉) using the 'TEMP CAL/+' button.
• Smart APP Remote Control: Monitor water quality data in real-time from your smartphone via the Tuya Smart APP. Create smart scenes and set custom alarm values for proactive management.
• Digital Display with Backlight: Clear and easy-to-read digital screen, enhanced by a backlight for visibility in various lighting conditions.
• Automatic Data Storage: The APP automatically saves historical data for up to 30 days, allowing for trend analysis and detailed monitoring.
• Wide Measurement Ranges: Offers broad measurement capabilities for various parameters, ensuring comprehensive water analysis.
• Versatile Applications: Suitable for a wide range of uses including drinking water, aquariums, hydroponics, swimming pools, ponds, and laboratory testing.
• Compact Design & Easy Installation: Space-saving design with included suction cups and a plastic wall bracket for convenient setup.

3. Specifications

Figure 1: Device dimensions and measurement ranges.

4. Package Contents

Figure 2: Contents of the PH-W3988 package.

The package includes the following items:

• 1 x PH-W3988 Multifunction Water Tester
• 2 x Suction Cups
• 1 x Wall Bracket
• 1 x Power Adapter (EU Plug 220-230V or US Plug 110-120V, depending on selection)
• 1 x User Manual (English)
• 1 x Carry Case
• pH Buffer Powder (pH 4.01, pH 6.86, pH 9.18) for calibration

5. Setup Instructions

5.1 Connecting the Probes

1. Carefully unpackage the PH-W3988 monitor and its probes.
2. Connect the PH probe to the BNC connector on the right side of the monitor.
3. Connect the TDS/EC/SALT/S.G/TEMP probe to the corresponding input on the left side of the monitor.
4. Ensure all connections are secure.

5.2 Powering the Device

1. Connect the provided power adapter to the DC6V input port on the monitor.
2. Plug the power adapter into a suitable electrical outlet (230V EU Plug or 110-120V US Plug, depending on your model).
3. The monitor display should illuminate, indicating it is powered on.

Figure 3: Wiring diagram and typical setup in an aquarium.

5.3 Initial Placement

Use the included suction cups and wall bracket to securely mount the monitor in a convenient location near your water source. Ensure the probes are fully submerged in the water you wish to monitor.

Figure 4: PH-W3988 in operation with probes in water.

6. Operating Instructions

6.1 Basic Operation

1. Power On: The device powers on automatically when connected to a power source.
2. Mode Switching: Press the MODE button to cycle through the different measurement parameters (TDS, EC, SALT, S.G). The PH/TEMP display is separate.
3. Temperature Unit Conversion: Press the TEMP CAL/+ button to switch the temperature display between Celsius (℃) and Fahrenheit (℉).

6.2 APP Connection and Monitoring

1. Download APP: Download the "Tuya Smart" APP from your device's app store (compatible with Apple and Android systems).
2. Add Device: Open the Tuya Smart APP and log in. Long press the WiFi button on the PH-W3988 monitor until the WiFi indicator flashes. Follow the in-app instructions to add the device and connect it to your WiFi network. You will need to enter your WiFi password.
3. Real-time Monitoring: Once connected, you can view real-time water quality data (PH, EC, TDS, SALT, S.G, Temperature) directly on your phone.
4. Data Analysis: The APP provides data curve graphs for detailed analysis over periods like day, week, or month. Historical data is stored for 30 days.

Figure 5: Mobile application monitoring interface.

6.3 Parameter Calibration

Regular calibration ensures accurate readings. Calibration powders for pH 4.01, pH 6.86, and pH 9.18 are included.

1. PH Calibration: The PH button on the host panel will automatically identify the calibration solution. Submerge the PH probe into the appropriate pH buffer solution (e.g., pH 6.86). Press the CAL button. The device will automatically calibrate. Repeat for other pH buffer solutions as needed.
2. EC/TDS/SALT Calibration: For EC, TDS, and SALT, select the desired parameter using the MODE button. Submerge the probe into the appropriate calibration solution. Press the CAL button. Use the TEMP CAL/+ and MODE buttons (acting as plus/minus) to adjust the reading to match the calibration solution value. Confirm the calibration.

Figure 6: Parameter calibration process.

6.4 Alarm Settings

You can set high and low alarm values for each parameter through the Tuya Smart APP.

1. In the Tuya Smart APP, navigate to the device settings.
2. Select the parameter (e.g., PH, TDS) for which you want to set an alarm.
3. Set the desired high and low alarm thresholds.
4. Configure notification methods, such as SMS notifications or pop-up screen prompts, to receive alerts when values exceed or fall below the set limits.

Figure 7: Detailed data information and alarm setup in the app.

7. Maintenance

Proper maintenance ensures the longevity and accuracy of your water quality monitor.

• Electrode Cleaning: Always clean the electrodes with distilled water after each use and dry them thoroughly. This prevents contamination and ensures accurate future readings.
• Storage: Store the probes in their protective caps, ideally with a small amount of storage solution (or pH 4.0 buffer solution) to keep the pH electrode hydrated.
• Regular Calibration: Calibrate the device regularly, especially the PH probe, to maintain accuracy. The frequency depends on usage and the type of water being tested.
• Device Cleaning: Wipe the main unit with a soft, dry cloth. Do not use abrasive cleaners or immerse the main unit in water.

8. Troubleshooting

• No Power: Ensure the power adapter is securely connected to both the monitor and a working electrical outlet. Check if the outlet is functional.
• Inaccurate Readings:
  • Perform a calibration for the affected parameter (PH, EC, TDS, SALT).
  • Ensure probes are clean and free from debris.
  • Check if the probes are properly submerged in the water sample.
  • Verify that the temperature compensation is set correctly.
• APP Connectivity Issues:
  • Ensure your smartphone is connected to a stable 2.4GHz WiFi network (5GHz networks are generally not supported by smart home devices).
  • Verify that the PH-W3988 monitor's WiFi indicator is flashing during pairing mode.
  • Restart the monitor and your router.
  • Ensure the Tuya Smart APP is updated to the latest version.
• Display Not Working: If the display is blank or shows errors after checking power, contact customer support.

9. User Tips

• Leverage Remote Monitoring: The PH-W3988's remote monitoring feature is highly beneficial. Utilize the Tuya Smart APP to keep an eye on your water parameters even when you're away, ensuring optimal conditions for your aquarium or hydroponic setup.
• Multi-functional Convenience: Take advantage of the 6-in-1 functionality to get a complete picture of your water quality without needing multiple devices. This saves space and simplifies your testing routine.
• Regular Calibration is Key: For the most accurate and reliable results, especially for pH, make sure to calibrate your device regularly using the provided buffer solutions.

10. Warranty and Support

For any technical assistance, warranty claims, or support inquiries regarding your JUANJUAN PH-W3988 Water Quality Monitor, please contact the seller or manufacturer directly. Refer to your purchase documentation for specific contact information and warranty terms.