RCYAGO BLE-9908 Smart Bluetooth pH/TDS/EC/Temp Tester User Manual

1. Introduction

The RCYAGO BLE-9908 is a multi-functional smart tester designed for precise measurement of pH, Total Dissolved Solids (TDS), Electrical Conductivity (EC), and Temperature. This device connects via Bluetooth to the YINMIK mobile application, enabling cloud-based data management, real-time monitoring, and customizable settings. It is ideal for various applications including household drinking water, hydroponics, laboratory use, and aquariums.

Figure 1: RCYAGO BLE-9908 Smart Tester in operation, measuring water parameters.

2. Safety Information

• Keep the device out of reach of children.
• Do not disassemble or modify the device.
• Avoid exposing the device to extreme temperatures or direct sunlight for prolonged periods.
• Ensure the electrode is clean and properly stored to prevent damage.
• Use only specified batteries (3 x 1.5V button batteries).
• Do not immerse the entire device in water; only the electrode part is designed for immersion.

3. Product Overview and Components

Familiarize yourself with the main components of your BLE-9908 tester.

Figure 2: Exploded view of the BLE-9908 tester, highlighting key components such as battery compartment, display, buttons, and protective cap.

• Display Screen: Large LCD display for readings.
• Buttons:
  • HOLD/TEMP: Data hold and temperature unit conversion.
  • MODE/CAL: Function conversion and calibration key.
  • ON/OFF: Power on/off button.
• Battery Compartment: Holds 3 x 1.5V button batteries.
• Protective Cap: Covers the electrode for protection and storage.
• Immersion Line: Indicates the minimum immersion depth for accurate readings.
• High-precision Probe: Contains the sensors for measurement.

Figure 3: Detailed view of the BLE-9908 electrodes, including the Glass pH Sensor, Temperature Sensor, and TDS/EC/Salinity sensor.

4. Setup

4.1 Battery Installation

1. Unscrew the top cap of the tester to access the battery compartment.
2. Insert 3 x 1.5V button batteries, ensuring correct polarity.
3. Securely screw the cap back on.

4.2 YINMIK Mobile App Download and Connection

1. Search for "YINMIK" in your mobile app store (iOS App Store or Google Play Store) and download the application.
2. Ensure Bluetooth is enabled on your mobile device.
3. Turn on the BLE-9908 tester by pressing the ON/OFF button.
4. Open the YINMIK app. The app will automatically search for and connect to the tester via Bluetooth. A Bluetooth icon on the tester's display will indicate a successful connection.

Figure 4: YINMIK Mobile App interface demonstrating intelligent control, data display, and settings.

5. Operation

5.1 Basic Measurement Steps

1. Remove the protective cap from the electrode.
2. Rinse the electrode with distilled water and gently blot dry with a clean tissue.
3. Immerse the electrode into the solution to be tested, ensuring the immersion line is covered.
4. Gently stir the solution and wait for the reading to stabilize on the LCD display.
5. The display will show pH, TDS/EC, and Temperature readings simultaneously.
6. After measurement, rinse the electrode with distilled water and replace the protective cap.

5.2 Button Functions

• ON/OFF: Press to turn the device on or off.
• HOLD/TEMP:
  • Short press: Hold the current reading on the display. Press again to release.
  • Long press: Switch between Celsius (°C) and Fahrenheit (°F) for temperature display.
• MODE/CAL:
  • Short press: Cycle through different measurement modes (e.g., pH, TDS, EC).
  • Long press: Enter calibration mode (refer to Section 6 for detailed calibration instructions).

5.3 YINMIK App Features

The YINMIK app provides enhanced control and data management capabilities.

• Real-time Data Display: View all parameters (pH, TDS, EC, Temp) simultaneously on your phone.
• Data Synchronization: Measured data is synchronized to the app, allowing for convenient viewing and analysis without frequent operation of the meter itself.
• Data Hold and Save: Use the "Hold Reading" and "Save Reading" functions within the app to capture and store data.
• Cloud-Based Data Management: Easily save, manage, and share test data, preventing data loss.
• Customizable Settings:
  • Backlight Control: Control the backlight of the tester's display via the app.
  • Parameter Limits: Set upper and lower limits for pH and EC. If a measurement exceeds these limits, the value will display in red on the app interface, alerting you to abnormal readings.
  • Auto-Save Interval: Configure the interval for automatic data saving.

Figure 5: Data synchronization and backlight control via the YINMIK app.

Figure 6: Setting custom maximum and minimum measurement limits within the YINMIK app.

6. Calibration

Regular calibration ensures the accuracy of your measurements. The BLE-9908 supports a 5-point pH calibration method and comes with calibration powders for both Asia Standard (pH 4.00, 6.86, 9.18) and EU Standard (pH 7.00, 10.01).

6.1 pH Calibration

1. Prepare the calibration buffer solutions (e.g., pH 4.00, pH 6.86, pH 9.18 for Asia Standard). Ensure the buffer solutions are at room temperature.
2. Turn on the tester and rinse the electrode with distilled water.
3. Long press the MODE/CAL button to enter calibration mode. The display will show "CAL".
4. Immerse the electrode into the first buffer solution (e.g., pH 6.86). The tester will automatically recognize the buffer and begin calibration. Wait for the reading to stabilize and confirm.
5. Rinse the electrode with distilled water.
6. Immerse the electrode into the second buffer solution (e.g., pH 4.00). The tester will again recognize and calibrate.
7. Rinse the electrode with distilled water.
8. Immerse the electrode into the third buffer solution (e.g., pH 9.18).
9. Repeat for any additional calibration points as needed. The app can guide you through the 5-point calibration process.
10. Once all desired points are calibrated, the tester will automatically exit calibration mode, or you can short press MODE/CAL to exit.

Note: Always calibrate with fresh buffer solutions. Discard used buffer solutions after calibration.

6.2 EC/TDS Calibration

EC/TDS calibration typically uses a single point standard solution (e.g., 1413 µS/cm).

1. Prepare the EC standard solution (e.g., 1413 µS/cm).
2. Turn on the tester and rinse the electrode with distilled water.
3. Long press the MODE/CAL button to enter calibration mode.
4. Short press MODE/CAL to cycle to the EC calibration option.
5. Immerse the electrode into the EC standard solution. The tester will automatically recognize the buffer and begin calibration.
6. Wait for the reading to stabilize and confirm the calibration.
7. Rinse the electrode with distilled water and exit calibration mode.

7. Maintenance

7.1 Electrode Cleaning

• After each use, rinse the electrode thoroughly with distilled or deionized water to remove any residue.
• For stubborn contaminants, soak the electrode in a mild cleaning solution (e.g., electrode cleaning solution or a dilute detergent solution) for 10-15 minutes, then rinse thoroughly.
• Never scrub the glass bulb of the pH electrode, as this can damage it.

7.2 Storage

• Always replace the protective cap after use.
• For optimal performance and longevity of the pH electrode, keep the electrode moist. Add a few drops of KCL storage solution or pH 4.00 buffer solution to the protective cap before replacing it. Never store in distilled water.
• Store the device in a cool, dry place, away from direct sunlight and extreme temperatures.

7.3 Battery Replacement

• When the battery indicator on the display shows low power, replace the batteries promptly.
• Refer to Section 4.1 for battery installation instructions.

8. Troubleshooting

9. Specifications

10. Warranty and Support

For warranty information and technical support, please refer to the product packaging or contact RCYAGO customer service directly. Contact details are typically available on the manufacturer's official website or through your point of purchase.

Please visit the official product page for the latest information and support resources.