31 May - 2 June 2023
28th International Caspian Oil & Gas Exhibition
Azerbaijan, Baku, Baku Expo Center, stand 3C116

Success AT-407N - acoustic water leak detector

Water leak from pipelineWater

Success AT-407N - acoustic water leak detector

The portable acoustic water leak detector with protection of surrounding noises.

Key features

  • Audio signal spectrum visualization.
  • Sensitive acoustic pick-up with replaceable contact rod and removable composite handle for operation in the soft soil.
  • Digital signal filtration for accurate leak detection.
LCD screenLCD
Utility detection depthLeak

Application of water leak detector Success AT-407N

Advanced acoustic water leak detector for metal and non-metal underground pipelines laying under paved and unpaved surfaces.

Portable acoustic water leak detector Success AT-407N is designed to locate leaks from underground pipelines of heat, water, gas, oil supply systems located at a depth of up to 3 m with or without pipe trench.

High-sensitive ground microphone ensures detection of leakage noise in pipes with pressure starting from 2 bar.

Acoustic method of water leak detection.

  • Leakage noise level measurement.
  • Inspection of any pipes (metal, PVC etc.).
  • Easy to understand indication.
  • Filtering of the noise for easy location.
  • Water leak detection inside the house in wall pipes.

Benefits of water leak detector Success AT-407N

  • AT-407N saves your money for digging and prevents waste of water (up to 2000 US dollars per month can be saved).
  • AT-407N saves your time. Remote survey of the pipes, pressure measurement and flow meter installation or false digging may take a lot of time. Pin-pointing of leakage with acoustic sensor can save up to 5 hours per day.
  • Effective leak detection in underground and wall pipes.

Features of AP-027 receiver

  • Advanced digital location receiver.
  • Large LCD display with switchable modes.
  • Sound output to the built-in speaker and the operator's headphones.
  • Vast range of supported frequencies (50 / 100 / 512 / 1024/ 8192 / 32768 Hz, WideBand 50…8600Hz).
  • Ability to connect an acoustic sensor (water leak detector / cable flaw detector functions).
  • Enclosure protection class IP54 against external influences.

Acoustic sensor AD-227 allows to find the leak

  • Under paved and unpaved surfaces.
  • By direct contact to the pipeline.
  • By placing the sensor against the wall.

Acoustic sensor AD-227 operation for water leaks detection

Move along the pipe to the supposed place of water leakage. During the operation there will be the following indication on the screen:

Acoustic sensor AD-227 operation for water leaks detection

  1. The signal is low on the screen and in the headphones, there is no signifi cant noise.
  2. The closer to the place of leakage the higher is the signal on the screen and the louder is the sound in the headphones.
  3. The operator is above the place of leakage, the signal is maximum.
  4. The signal is less, it means the leakage was behind.

Water leak detector Success AT-407N is recommended for application in the following industries

  • Public utilities.
  • Heat and water supply.

Specifications of AP-027 receiver

Parameter Tracing Leak detection
Type of accepted signal Uninterrupted /pulse Uninterrupted signal
Frequencies of the receiver’s filter Central frequency of quasi-resonant filter 50…60 Hz, 100…450 Hz through 50 Hz, 120…540 Hz through 60 Hz, 512 Hz / 1024 Hz / 8192 Hz / 33 kHz - Range limitation "below" 0,1 / 0,15 / 0,21 / 0,31 / 0,45 / 0,65 / 0,95 / 1, 38 kHz;
- Range limitation "above" 2,00 / 1,38 / 0,95 / 0,65 / 0,45 / 0,31 / 0,21 / 0, 15 kHz
"Broadband" (operating mode) 0,05…8,6 kHz 0,09…2,20 kHz
Gain factor 100 dB
Visual indication Liquid-crystal display-symbols and meaning of the chosen modes and parameters:
- animated (moving) scale of the output signal level;
- digital value and animated (moving) scale of the output signal level;
- graphic (moving diagram) of the output signal level;
- frequency content of the output signal level;
- digital and graphic display of output signal levels kept in the "memory"
Sound indication - Headphones natural broadband or filtered signal
- Headphones-synthesized sound. Frequency modulation;
- Built-in emitter - synthesized sound. Frequency modulation
Supply - voltage 4...7 V;
- alkaline batteries АА type 1,5 V (4 pcs.)
Time of continuous operation not less than 20 hours
Automatic shutdown when the device is not active After 30 minutes of inactivity
Ambient temperature -20...+50°С
Ingress protection rating IP54
Weight of the electronic unit 0,46 kg
Receiver AP-027 dimensions 220x102x42 mm

Basic set

Name Quantity
1 Receiver AP-027 1 pcs.
2 Acoustic sensor AD-227 1 pcs.
3 Headphones 1 pcs.
4 Operation manual 1 pcs.


Used for pipeline leak detection in hard-to-reach places and for isolation valves diagnostics.

Set of type AA rechargeable accumulators and chargers for AP-027.

Download full product catalogue