PQWT-L4000 Multi-Sensor Water Pipe Leak Detector
- (Â¥) CNY
- (UShs) UGX
- ($) USD
Find and pinpoint leaks in indoor and outdoor pressure pipelines with the PQWT-L4000. Designed for water utilities, plumbing and maintenance teams, and leak detection professionals, it helps investigate suspected leaks in underground water pipes, indoor pipework, fire lines, and heating systems.
The L4000 uses acoustic sensors to collect leak noise. Its host processes the signal and displays visual spectrum and signal bar readings, while headphones let the operator listen to the sound. Use general detection mode to survey a wider area, then use locating mode to investigate suspected leak points. Results support field assessment; actual detection depends on site and pipe conditions.
Product Features
- Two sensors for different survey conditions: a middle sensor and a triangular sensor
- Suitable for indoor and outdoor pipeline surveys
- Acoustic signal analysis with visual spectrum and signal bar display
- General detection and leak-locating modes
- Adjustable gain and volume
- 7-inch HD touch display
- Noise-reduction headphones for listening to leak signals
- Portable host unit weighing approximately 0.7 kg
Key Specifications:
| Application | Indoor and Outdoor pipelines |
| Sensors | Medium and triangular sensors |
| Detection Depth | Up to 5 m with the medium sensor; up to 50 cm with the square and triangular sensors |
| Frequency Range | 1–10,000 Hz |
| Display | 7-inch digital touch screen |
| Operating Modes | General detection and locating |
| Working Temperature | −20°C to +50°C |
| Charting Hours | 7-8 Hours |
| Working Hours | 15 Hours |
| Charger | 5V 2A USB |
| Input Power | Around 2W |
| Languages | English, Spanish, Turkish, Arabic, French, Italian |
| Host Weight | Approximately 0.7 kg |
| Series | L50, 125A, 125B, 125C, 125D, L2000, L3000, L4000, L5000, L6000, L7000 |
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Related Products
Locate leaks in indoor and outdoor pressure pipelines with the PQWT-L5000. This portable detector collects and analyzes leak sounds to help operators identify suspected leak areas and narrow down the location before excavation or repair.
The L5000 is designed for water supply pipes, fire pipes, heating systems, indoor plumbing, and underground heating pipes.
Its three sensors suit different inspection settings: the medium sensor for general outdoor checks, the triangular sensor for floor surfaces, and the square sensor for restricted spaces such as walls and areas beneath cabinets.
Product features
- Routine inspection and locating modes for checking larger pipe areas and investigating suspected leak points.
- Three interchangeable sensors for different surfaces and access conditions.
- Visual spectrum and signal bars, plus headphone audio, help you assess collected leak signals.
- Noise-reduction headphones for listening during field checks.
- Portable host unit for indoor and outdoor use.
Product features
- For leak detection on indoor and outdoor water pipelines
- Acoustic signal collection with visual spectrum and signal-bar display
- General Detection and Locating operating modes
- Four sensors for different surfaces and access conditions
- 7-inch HD touchscreen
- Adjustable gain and volume, with 10 levels each
- Frequency range: 1–10,000 Hz
- Up to 15 hours of stated working time
- 5V, 2A USB charging
- Operating temperature: −20°C to +50°C
- Main unit weight: approximately 0.7 kg
The PQWT-L7000 is a portable investigation tool to help narrow down suspected leak locations. Actual detection performance varies with the pipework, ground or building materials, ambient noise, and site conditions.
Request a quotation from Africa Drill Mart for current pricing, availability, and product guidance for your application.
Use the PQWT-L2000 to locate suspected leaks in pressurized water pipelines. Designed for field use, this portable detector listens for leak-related sound signals and displays them on a 7-inch touchscreen, helping operators identify areas that need closer investigation.
Use General Detection to survey a wider area, then Locating Mode to compare readings and narrow down the suspected leak position. Adjustable gain and volume help users assess signals in different site conditions.
- Detects pipeline leaks at depths of up to 5 m, subject to site and ground conditions
- Suitable for outdoor pipeline surveys and indoor or underground pipe leak investigations
- Uses a middle sensor to collect leak-related sound signals
- 7-inch HD digital touchscreen displays signal information
- Two operating modes: General Detection and Locating
- Adjustable gain and volume, each with 10 levels
- Frequency range: 1–10,000 Hz
- Rechargeable operation: approximately 15 hours per charge
- USB charging: 5 V, 2 A
- Portable design for field deployment
Use the PQWT-L3000 to locate suspected leaks in indoor and outdoor water pipelines. It detects and analyses leak-related sound signals, displaying visual signal bars and a spectrum on its 7-inch touchscreen while also transmitting audio through the supplied headphones.
The L3000 includes a middle sensor for general detection and a square sensor for narrow spaces such as walls and cabinets. Use General Detection to survey a pipeline area, then Locating Mode to investigate suspected leak points. It is designed for applications including water pipes, fire pipes, heating systems, and underground floor pipes.( PQWT product details, operating manual)
Product features
- Indoor and outdoor pipeline leak detection
- Middle and square sensors for different survey locations
- General Detection and locating operating modes
- 7-inch HD digital touchscreen
- Adjustable gain and volume, each with 10 levels
- Frequency range: 1–10,000 Hz
- Noise-reduction headphones for listening to leak signals
- Portable host weighing approximately 0.7 kg
- USB charging
The PQ 128 Series is intended to help water utility teams, contractors, and maintenance professionals investigate suspected leaks in water pipelines. Model specifications and included sensors vary; refer to the product listing and user manual for the configuration supplied.
Series highlights
- Acoustic vibration analysis with multi-band filtering
- Indoor and outdoor detection options, depending on model
- General Detection and Location modes
- Adjustable gain and volume
- Audio recording and data transfer to a computer
- 7-inch LCD screen
- Rechargeable 3.7 V, 7000 mAh battery; manual specifies up to 8 hours of working time
- Model options PQ128A, PQ128B, PQ128C, PQ128D, and PQ128E
Detection results depend on site conditions, sensor selection, and operating method. Use the manual for setup and operating guidance.
