Unmanned leak scanning
in water distribution systems

Zonescan 400

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Zonescan 400 features:

• Unmanned leak detection saves manpower
• Pinpoints pipe sections for correlation
• Fast and easy installation
• Quick identification of presence or absence of leakage
• Also serves as listening device
• Versatile applications – not only noise logging
• 2 pulse inputs for flow logging
• 2 analogue inputs for pressure logging

Zone scanning improves efficiency of leak detection
Systematic unmanned leak scanning prior to leak location will ensure that leak detection operators are directed only to locations with leak problems. This enhances efficiency of both locating specialists and equipment.

3 in 1: Leak noise, flow and pressure logging
The ZONESCAN 400 is a multifunctional device and offers more than any other leak noise logger. It has 5 different signal inputs, one for a noise sensor, 2 analogue entries e.g. for pressure measurements and 2 pulse inputs for flow logging.

Built-in acoustic listening facility
The ZONESCAN 400 can also be used as an acoustic listening device for leak detection. The operator can evaluate the amplified leak sound through stereo headphones connected to the headphone socket.

Statistical leak noise analysis determines the presence or absence of leaks
The ZONESCAN sensor is attached to the water system and records the water noise during a preset time period. The statistical analysis of the recorded noise determines the presence or absence of a leakage. A number of ZONESCAN units strategically placed throughout a distribution zone will detect all areas of leakage within this zone to be correlated or be verified by ground miking.

Graphical presentation allows easy leak evaluation
The data loggers are downloaded to a PC for analysis. The results are presented statistically and graphically as histograms and frequency distributions to identify the leakage area. A numeric leak indicator simplifies the interpretation of the statistical results.

Flow measurement includes combination and bi-directional meters
The ZONESCAN 400 can accommodate 2 pulse units simultaneously, allowing the flow measurement of either 2 separate meters or of combination and bi-directional meters. For each channel the operator can define starting date and time, logging interval and daily duration of measurement. The actual meter reading can be keyed in. Moreover, a level for minimum consumption can be set, above which a leak is indicated.

Pressure measurement and further analogue data simultaneously
The 2 analogue entries can be individually programmed for separate memorization of 2 pressure sensors or any other analogue measuring device (e.g. temperature). For each input channel the operator can define date and starting time, logging interval and daily duration of the measurement. The physical characteristics and range of signal can also be defined. Furthermore, a level can be set for the maximum reading, above which an alert is indicated.

Simultaneous presentation of 20 loggers for comparison
The AQUASCAN 400 software allows the simultaneous on-screen presentation of up to 20 different leak noise loggers. This permits the identification of the approximate location and where to correlate the leak.

Ease of use
Both programming and interrogation by a PC do not require special skills, nor does the installation of sensors and loggers. They are easily attached to hydrants, gate valves, or meter settings.

Technical Specifications:

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