PQWT CL200 Underground Water Pipe Leak Detector Instruction Manual

1. Introduction

The PQWT-CL series pipe leak detector is a professional water leakage detecting device designed for water supply companies, heating companies, municipal construction companies, and property companies. The PQWT-CL series is primarily used to find and determine the location of leakage points in water supply pipelines. It can also be used to detect leakage in other pressure piping systems. When fluid in a pipeline erupts through a leakage source due to pressure, the noise produced by the impact on the internal wall will spread along the pipeline or through the buried layer medium to the ground. This device determines the leakage source by amplifying the leakage noise and analyzing the spectrum signal.

The PQWT-CL200 model is specifically designed for detecting leaks up to 2 meters deep.

2. Package Contents

Please check the package contents upon receipt to ensure all items are present and undamaged.

Image: PQWT CL200 main unit and all included accessories.

• PQWT-CL200 Main Unit
• Headphones
• Sensor
• Listening Rods (3 pieces)
• Connector Cable
• Power Adapter
• USB Drive
• Universal Travel Adapter
• Shoulder Strap

3. Product Features

• Combines dual-mode acoustic vibration with spectrum technology for accurate leakage determination.
• Equipped with a windproof sensor and super anti-jamming filtering for environmental noise.
• Active noise reduction function to exclude external interference and precisely locate the position.
• Applicable to various pipeline materials and ground types.
• Features rough measurement and accurate measurement functions to quickly lock the leaking point.
• Simple operation, allowing non-professionals to learn operation within 5 minutes.
• Advanced Sensitivity: Detects even small, unseen leaks.
• Easy-to-Use Interface: User-friendly and intuitive controls.
• Portable and Convenient: Compact design for easy transport.
• Prevents Further Damage: Early leak detection helps prevent extensive damage.
• Professional-Grade Performance: Trusted by plumbing professionals.

4. Component Identification

Familiarize yourself with the main unit's ports and accessories for proper connection and operation.

Image: Main unit ports and controls.

• ON/OFF: Power button.
• LED: Indicator light.
• RST: System Reset Button.
• SD: SD Memory Card Port.
• USB: USB Port for data transfer.
• Microphone: Internal microphone for ambient sound.
• Power Light: Indicates power status.
• Connector Port: For connecting the sensor.
• Headset Port: For connecting headphones.
• Main Switch: Main power control.
• LCD Touch Screen: 7-inch high-definition digital touch color crystal screen for operation and display.

Image: Detailed view of instrument accessories.

• Listening Rod: Used for direct contact with surfaces to detect leak sounds.
• Connector: Cable to connect the sensor to the main unit.
• Earphones: For clear audio monitoring of leak sounds.
• Sensor Port: The base of the sensor unit.

5. Setup

Follow these steps to set up your PQWT-CL200 device:

1. Charge the Device: Ensure the main unit's rechargeable lithium batteries are fully charged using the provided 8.4V Direct Charge Smart Charger.
2. Connect the Sensor: Plug the connector cable into the 'Connector Port' on the main unit and attach the other end to the sensor.
3. Connect Headphones: Plug the headphones into the 'Headset Port' on the main unit.
4. Power On: Press the ON/OFF button to power on the device. The Power Light should illuminate.
5. Initial Check: The device will boot to the main menu on the LCD Touch Screen.

Video: Product overview and demonstration of component assembly.

6. Operating Instructions

The PQWT-CL200 features a user-friendly touch screen interface for selecting different operating modes.

Image: Main menu of the PQWT-CL200 device.

6.1. Mode Selection

From the main menu, tap on the desired mode to begin detection:

• Spectrum Analysis: Provides a real-time display of noise signals within the 1-5000 Hz range. This dual-mode functionality combines acoustic vibration with spectrum technology for precise leak detection.
• Filtering Analysis: Offers a real-time display of noise signals in the Gore band. This mode helps filter ambient noise for a clearer visual comparison of potential leak sounds.
• Live Recording: Allows you to record and store audio data for later analysis.
• File Explorer: Access and manage previously recorded data.
• Settings: Configure various device parameters.
• Services: Access support or additional features.

6.2. Leakage Positioning

For precise positioning, the device utilizes spectral analysis and filtering analysis modes. In addition to listening through headphones, you can observe the visual representation of the signal strength.

Image: Visualisation of the spectrum for precise positioning.

• Fine Measurement Mode: Filters ambient noise and provides a columnar bar display for visual comparison of leaks and background noise.
• Point Measurement Mode: Offers multi-monitoring for detailed analysis and judgment of suspicious water leakage points. This mode displays the instantaneous value (ambient noise), minimum (leakage noise), and suspected water leak levels.

Move the sensor along the suspected pipeline path. Observe both the audio feedback through the headphones and the visual indicators on the screen. A significant increase in noise level or a distinct pattern in the spectrum analysis indicates a potential leak location.

Image: User operating the PQWT CL200 device outdoors.

7. Maintenance

• Cleaning: Keep the main unit, sensor, and accessories clean and free from dust and debris. Use a soft, dry cloth for cleaning.
• Storage: Store the device in a dry place within the recommended preservation temperature range of -10°C to +50°C.
• Battery Care: Charge the device regularly, even when not in use, to maintain battery health. Avoid fully discharging the batteries for extended periods.
• Data Management: The device supports long-term recording and storage. Regularly transfer important data to an external storage device via the USB port or SD card. You can delete and repeat recordings as needed.
• Avoid Impact: Handle the device with care to prevent physical damage.

8. Troubleshooting

• No Sound/Weak Signal: Ensure all cables (sensor, headphones) are securely connected. Check battery level. Adjust audio amplification gain in settings. Ensure the sensor is in good contact with the surface above the pipeline.
• Difficulty Pinpointing Leak: Utilize both Spectrum Analysis and Filtering Analysis modes. Use the Fine Measurement and Point Measurement modes for more detailed analysis. Environmental noise can interfere; try to minimize external sounds or use the active noise reduction feature.
• Device Not Powering On: Ensure the battery is charged. Check the main switch and ON/OFF button. If unresponsive, try pressing the System Reset Button.
• Inaccurate Depth Reading: The PQWT-CL200 is designed for a detection depth of up to 2 meters. For deeper pipelines, a different model might be required.
• What pipe materials can it detect leaks in? The device detects acoustic vibrations caused by leaks, making it effective for various pipe materials including iron, copper, aluminum, and plastic.

9. Specifications (Model: CL200)

Image: Product Parameter table for PQWT-CL series.

10. User Tips

• Versatile Detection: The PQWT-CL200 is effective for detecting leaks in various pipe materials, including iron, copper, aluminum, and plastic, by analyzing the acoustic vibrations.
• Depth Awareness: For optimal results, remember that the CL200 model has a specified detection depth of 2 meters. Consider this limitation when assessing potential leak locations.
• Quick Learning Curve: The device is designed for ease of use, allowing even non-professionals to quickly learn and operate it effectively within minutes.
• Minimize Noise: When performing detection, try to reduce ambient noise as much as possible to improve the clarity of leak sounds and the accuracy of spectral analysis.
• Regular Data Review: Utilize the live recording and file explorer functions to capture and review data, which can be helpful for confirming leak locations or for training purposes.

11. Warranty and Support

The PQWT-CL200 comes with a standard manufacturer's warranty. For specific warranty details, technical support, or service inquiries, please contact the PQWT Manufacturer Store directly. Ensure you have your product model and purchase information ready when contacting support.