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The World’s first and smallest PDA Correlator converts a standard Palm Handheld into the most powerful Digital Multi-Point Correlator
Advanced Features:
· First Palm hand-held operated correlator · Ultra compact sensors with built-in radio transceiver · Fully digital · Highest precision on all pipe materials · Multi point correlation with 3 or more radio sensors · Automatic velocity check · Fully automatic filter and parameter setting · Enter pipe details at site, or later · Powerful transceiver for interactive communication · Remote listen to any sensor via Palm PDA |
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AQUASCAN 900 — Digital Multi-point Correlator |
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The AQUASCAN 900 PDA correlator converts a Personal Digital Assistant (PDA) into a flexible, powerful and extremely portable high-precision leak detection and pinpointing instrument. |
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PDA based correlator |
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An innovative feature allows automatic velocity check where pipe material and diameter may be unknown. |
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Automatic velocity check |
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Using the latest, state-of-the-art technology, the size and weight has been reduced to a minimum. The sensor/accelerometer and transmitter/receiver are combined into a single, very compact sensor with built-in transceiver, meaning no separate transmitter, cable, or sensor/accelerometer is required – simply place the combined transmitting sensor directly onto the valve spindle or chosen point of connection with the pipeline. |
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Ultra compact sensors with built-in transceiver |
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Alstern Technologies Group |
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AQUASCAN 900 |
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The AQUASCAN 900 is available as a dual, triple or multi sensor system, providing correlation between any number of sensors. |
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Multi point system allows correlation between any number of sensors |
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3 x Sensors with built-in transceiver |
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System configuration |
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AQUASCAN 900 — Technical Specifications |
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The AQUASCAN 900 is fully digital and offers the highest performance and precision on all pipe materials without the known disadvantages of analogue radio transmission. |
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Fully digital system offers highest performance and precision on all pipe materials |
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The AQUASCAN 900 Palm OS based operating software allows easy entry of pipe data and displays correlation results in a very user-friendly format. |
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User friendly Palm OS based operating software |
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The AQUASCAN 900 offers another innovation in correlation technology: For the first time, the sensors are equipped with a transceiver allowing the user interactive communication with the sensor for optimising the adjustment of the measurement settings in the sensor. |
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Powerful transceiver for interactive communication |
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With AQUASCAN 900 the operator can also perform vital leak ‘sounding’ by simply selecting any sensor via the PDA. The operator can then listen to all noise activity picked up by each sensor entirely remotely and in true wireless digital sound quality. |
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Remote listening to any sensor |
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Additional transmitting sensors (unlimited number) |
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Optional Accessories |


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Additionally, pipe details can be entered at site or entered/corrected later for a fully revised leak position. |
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User friendly Palm OS based operating software |
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All correlation files and leak positions can be printed out directly from the PDA, or can easily be stored and/or transferred to a PC using widely available Memory Expansion Cards inserted into the PDA. |
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Large memory of correlation files and direct printout from PDA |

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Pipe material: |
All common pipe materials; mixed material mode |
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Sound velocity: |
Sound velocity table and automatic on-site velocity check and adjustment (tri-correlation) |
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Correlation resolution: |
16,000 points |
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Correlation accuracy: |
1 cm for 100 m (1” for 1,000 ft) |
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Correlation method: |
18-bit amplitude correlation |
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Filter: |
Automatically adjusted via transceiver |
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Frequency analysis: |
FFT and coherence |
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Frequency response: |
1-5000Hz |
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Peak suppression: |
Unlimited, user selectable |
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Sensors: |
Extremely sensitive piezo-ceramic sensors with built-in transceiver and magnet fixing |
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Sensitivity: |
15V/g |
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Power: |
Sensor: Rechargeable Lithium polymer battery; System Communication Link: 4 1.5 V Alkaline batteries |
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Memory: |
140 correlations, including FFT and coherence data for off-site re-correlation with altered parameters |
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Battery charging: |
Vehicle or indoor |
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Battery charge life: |
18 hours |
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Dimensions: |
Transmitting sensors: Ø 58 mm x 128 mm (Ø 2.3 x 5”) |
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System Communication Link: 150 x 100 x 35 mm (5.9 x 3.9 x 1.4”) |
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Weight: |
Transmitting sensors: 0.5 kg (1.1 lb.) |