1. Product Overview
The WQM-369 is a versatile 6-in-1 Bluetooth Floating Water Quality Monitor designed for comprehensive water analysis. It accurately measures pH, Electrical Conductivity (EC), Oxidation-Reduction Potential (ORP), Free Chlorine, Salinity, and Temperature. This device is ideal for monitoring water quality in various applications including swimming pools, aquariums, fishponds, hot springs, and drinking water.
Figure 1: WQM-369 6-in-1 Smart Water Quality Meter with key features highlighted.
Key Features:
- Connects via Bluetooth to iOS or Android devices using the 'YINMIK' mobile application.
- Floating Monitor design for easy placement in water.
- 24-hour monitoring with standby mode.
- Data HOLD function to freeze readings on the display.
- Data memory storage for up to 1000 records.
- Data export function (e.g., to Excel files) for analysis, printing, and sharing.
- Selectable temperature unit (°C / °F).
- Buzzer function for alerts.
- Easy calibration process.
- Ability to set Max and Min Limit values for pH, EC, ORP, and Free Chlorine via the app.
- Backlight function, controllable via the mobile application.
2. Package Contents
- 1 × WQM-369 6-in-1 Floating Monitor
- 5 x pH Buffer Powders (4.00, 6.86, 7.00, 9.18, 10.01)
- 1 x Instruction Manual (English)
Figure 2: Contents of the WQM-369 product package.
3. Setup and Installation
3.1 Battery Installation
- Locate the battery compartment on the device.
- Open the battery cover.
- Insert 3x AAA batteries, ensuring correct polarity.
- Close and securely tighten the battery cover to maintain the device's IP67 waterproof rating.
Figure 3: Battery replacement steps for the WQM-369.
3.2 Mobile Application Download
Scan the QR code provided in the manual or on the product packaging to download the 'YINMIK' application for your iOS or Android device.
Figure 4: QR codes for YINMIK app download (iOS and Android).
3.3 Bluetooth Connection
- Enable Bluetooth on your phone: Swipe down from the top of your phone screen to access the quick settings menu. Look for the Bluetooth icon and tap it to turn it on.
- Enable Bluetooth on the device: Press and hold the ON/OFF button on the WQM-369 for approximately 3-4 seconds until the Bluetooth icon appears on its display.
- Connect via the app: Open the 'YINMIK' application. The device name "BLE-YC01" should automatically appear on the screen after a few seconds. The app will establish an automatic connection.
Video 1: Bluetooth Connection Setup Guide for the WQM-369.
4. Operating Instructions
4.1 Device Controls
Figure 5: WQM-369 device controls and LCD screen.
- ON/OFF Button: Press to turn the device on or off. Long press for 3-4 seconds to enable/disable Bluetooth.
- HOLD/TEMP Button: Press to hold the current reading on the display. Long press to switch between Celsius (°C) and Fahrenheit (°F) temperature units.
- MODE/CAL Button: Press to cycle through different measurement modes (pH, EC, ORP, Salinity, Chlorine). Long press to enter calibration mode.
4.2 Taking Measurements
- Ensure the device is clean and calibrated (see Section 5.1).
- Turn on the device and ensure Bluetooth is connected to the 'YINMIK' app.
- Place the meter into the water you wish to test. The device is designed to float.
- The LCD screen will display readings. For detailed monitoring and data logging, refer to the mobile application.
4.3 Mobile Application Interface
The 'YINMIK' app provides a comprehensive interface for viewing measurements, managing saved data, and configuring settings.
Figure 6: YINMIK mobile application interface.
- Measurement Display: View real-time readings for all 6 parameters.
- Backlight Control: Toggle the backlight on/off directly from the app.
- Hold/Save Reading: Use the app buttons to hold or save current readings.
- Saved Data: Access up to 1000 stored records. Data can be exported in Excel format for further analysis and sharing.
- Settings: Configure auto-save intervals, set Max/Min limits for parameters, and manage calibration records.
Figure 7: 24-hour online monitoring and data export via the mobile application.
Figure 8: Automatic data storage and sharing features.
5. Maintenance and Calibration
5.1 Calibration
Regular calibration ensures accurate readings. The device supports optional 2 sets of calibration modes for pH (6.8 / 4.0 / 9.1 or 7.0 / 4.0 / 10.0) and specific values for ORP (256mV) and EC/Salt (1413µS/cm; 12.88mS/cm).
- Prepare the appropriate pH buffer solutions using the provided powders and distilled water.
- Long press the MODE/CAL button to enter calibration mode.
- Follow the on-screen prompts on the device or in the 'YINMIK' app to perform the calibration for each parameter.
- Rinse the probe with distilled water between each buffer solution.
Figure 9: Calibration record and setting max/min limits via the mobile app.
5.2 Cleaning and Storage
- After each use, rinse the sensor probes thoroughly with distilled water to prevent contamination and residue buildup.
- Do not use abrasive materials or harsh chemicals to clean the device.
- Store the device in a cool, dry place, away from direct sunlight and extreme temperatures. Ensure the sensor is kept moist if recommended by the manufacturer (refer to specific probe care instructions).
6. Specifications
| Parameter | Range | Resolution | Accuracy |
|---|---|---|---|
| pH | 0.00~14.00pH | 0.1pH | ±0.1pH |
| ORP | -1200mV~+1200mV | 1mV | ±15mV |
| Conductive (EC) | 0~1999 µS/cm; 2000~10000µS/cm; 10.01~20.00 mS/cm | 1µS/cm; 10µS/cm; 0.01mS/cm | ±2% F.S |
| Salinity | 0~999ppm; 1000~9990ppm | 1ppm; 10ppm | ±2% F.S |
| Chlorine | 0.1-4.0 mg/L | 0.1mg/L | ±0.5°C |
| Temperature | 0.0~60.0°C; 32.0~140.0°F | 0.1°C; 0.1°F | ±0.5°C |
Figure 10: Detailed measuring parameters and calibration values.
Additional Specifications:
- Model Number: WQM-369
- Battery Included: Yes
- Is Smart Device: Yes
- With Backlight Or Not: Yes
- Origin: Mainland China
- Certification: CE
- Type: Floating pH Monitor
- ATC Temp: 0.1~60°C
- Data storage: Can store 1000 records data
- Environment temp: 0.1~60.0°C; RH max 90%
- Waterproof: IP67
- Bluetooth: Supports 5.2 version
- Dimensions: 155mm (6.10") height, 85mm (3.34") width
- Weight: 210g
Figure 11: WQM-369 product dimensions and weight.
7. Troubleshooting
- Device not turning on: Check battery installation and ensure batteries are not depleted. Replace if necessary.
- Bluetooth connection issues: Ensure Bluetooth is enabled on both the device and your phone. Restart both devices and the 'YINMIK' app. Make sure the device is within range of your phone.
- Inaccurate readings: Perform a calibration for the affected parameter. Ensure the sensor probes are clean and free from debris. Check if the probes are damaged.
- App not displaying data: Verify Bluetooth connection. Ensure the app has necessary permissions on your phone. Try restarting the app.
- Backlight not working: Check the backlight setting within the 'YINMIK' mobile application.
8. User Tips
- Regular Calibration: Calibrate your device frequently, especially for pH, to ensure the most accurate readings. Environmental factors and usage can affect sensor performance over time.
- Cleanliness is Key: Always rinse the probes with distilled or deionized water after each use to prevent cross-contamination and buildup of residues, which can impact accuracy.
- Optimal Storage: Store the device in its original packaging or a protective case. Ensure the pH probe is stored in a suitable storage solution (not dry) if specified by the manufacturer to prolong its lifespan.
- Battery Life: To conserve battery life, turn off the device and Bluetooth when not in use.
- Data Logging: Utilize the app's data logging and export features to track trends in your water quality over time, which can be invaluable for maintaining optimal conditions.
9. Warranty and Support
This product is covered by a standard manufacturer's warranty. For specific warranty details, technical support, or service inquiries, please refer to the contact information provided by your retailer or the manufacturer's official website.
The product offers free returns within 90 days. Additionally, a service commitment includes a $1.00 coupon code if delivery is delayed, and refunds if the package is lost or items are damaged.
