● Complete system for the mobile loss analysis and reduction in drinking water systems
● 48-bit three-point correlation
● Integrated receiver to read out wireless data loggers from a moving vehicle
● Reading and analysing pressure data loggers
● GPS-supported mapping software
● FFT and coherence function
● Dissipation function to studiously suppress noise interferences
● Automatic measuring function
● Highly sensitive sound sensor and high-performance radio transmitters for a reach of up to 2,000 metres
- FFT high-performance correlation at up to three measuring spots
- Integrated receiver for the mobile read-out of LD5L wireless data loggers
- Mobile wireless data logger management – analysis and management of noise and pressure logger data
- All with only one device!
Correlation is a computer-aided procedure by use of which very precise leak detections can be performed.
A particular sound emanates from every point of leakage, which spreads over the pipe and to hydrants, fittings or valves.
| The sound is registered at up to three contact measuring spots by the highly sensitive signal pick-ups and transferred to the correlator via the LD radio transmitters. From the time difference of these signals, the LD20PC – in due consideration of material, pipe diameter and length of the measured section – calculates the exact position of the leak.
Whilst leak detection with other electro-acoustic procedures – especially on long pipelines – can hardly be performed owing to interference factors such as weather, the pipe's laying depth or noisy surroundings, such cases often pose no problem for the leak detection by means of correlation. |
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Master data |
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Article number |
3.110.008.210 |
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Sound |
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Amplification [dB] |
— |
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Input impedance [Ω] |
— |
|
Min. measuring range [Hz] |
— |
|
Max. measuring range [Hz] |
— |
|
Output impedance [Ω] |
— |
|
Transmission power [mW] |
— |
|
Transmission frequency [MHz] |
— |
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Measuring principle |
— |
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Power supply |
|
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Internal (battery) |
— |
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External (power supply unit) |
230 V |
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Internal (battery) |
√ |
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Battery type |
— |
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Memory organization |
|
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Memory |
Notebook |
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Recording period |
— |
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Storage type |
Harddisk |
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Type of protection |
|
|
IP68 |
— |
|
IP65 |
— |
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IP54 |
— |
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IPX7 |
— |
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IP44 |
√ |
|
IP66 |
— |
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Operating time |
|
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Approx. 5 years (without battery change) |
— |
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Approx. 10 hours |
— |
|
ca. 8h |
— |
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Interfaces |
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USB |
√ |
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Infrared |
— |
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Radio |
√ |
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Bayonet (microphone) |
√ |
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Bayonet (sensor) |
— |
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6.3 mm audio jack (headphones) |
√ |
|
Bluetooth |
√ |
|
BNC (antenna) |
√ |
|
3.5 mm audio jack (headphones) |
— |
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Banana jack |
— |
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Surrounding conditions |
|
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Operation – min. temperature [°C] |
— |
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Operation – max. temperature [°C] |
— |
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Storage – min. temperature [°C] |
— |
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Storage – max. temperature [°C] |
— |
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Device control |
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Push buttons |
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Membrane keyboard |
— |
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Control knobs |
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Wireless (radio) |
— |
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Wireless (magnetic coupling) |
— |
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Display |
|
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LCD |
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No display |
— |
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Colour |
√ |
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Monochrome |
— |
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10-stage LED bargraph |
— |
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Housing design |
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Plastic |
— |
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Metal |
— |
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Plastic/metal |
√ |
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Other |
— |
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Weight (packing excluded) |
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Weight [kg] |
11 |
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Dimensions (packing excluded) |
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Length [mm] |
540 |
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Width [mm] |
440 |
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Height [mm] |
220 |
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STANDARD SCOPE OF DELIVERY |
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Operating manual |
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Option |
√ |
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Sound-protected headphones |
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Option |
√ |
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Transport case |
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Option |
√ |
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Mini earphones |
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Option |
— |
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USB cable |
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Option |
— |
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Software LogControl |
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Option |
√ |
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Software CorControl |
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Option |
√ |
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Signal pick-up for correlation transmitter |
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Option |
√ |
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Correlation transmitter 1, yellow |
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Option |
√ |
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Correlation transmitter 2, red |
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Option |
√ |
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Notebook for laptop correlator |
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Option |
√ |
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Charger |
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Option |
√ |
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Protective gloves |
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Option |
— |
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Pressure lock with Geka coupling (drinking water certificate) |
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Option |
— |
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Bluetooth transmitter (integrated in reel) |
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Option |
— |
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Bluetooth headset |
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Option |
— |
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Disinfectant (250 ml) |
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Option |
— |
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Geka coupling 1" IG |
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Option |
— |
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Geka coupling 1" AG |
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|
Option |
— |
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Insulated tube |
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Option |
— |
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ASCERTAINABLE MEASURED VALUES AND FUNCTIONS |
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Internal sensors |
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Sound [digits] |
— |
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Ultrasound [Digits] |
— |
|
External sensors |
|
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Sound [digits] |
√ |
|
Gas [H2] |
— |
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Functions and equipment |
|
|
Control via keys |
√ |
|
Notebook |
√ |
|
48-bit three-point correlation |
√ |
|
Integrated receiver to read out wireless data loggers from a moving vehicle |
√ |
|
Analysing wireless data loggers |
√ |
|
Reading pressure data loggers |
— |
|
Analysing pressure data loggers |
— |
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Optional integration of GPS-supported mapping software |
√ |
|
FFT coherence function |
√ |
|
Dissipation function to studiously suppress noise interferences |
— |
|
Automatic measuring function |
√ |
|
Automatic speaker muting |
√ |
|
Transmitter input for optional wireless headphones |
√ |
|
Bluetooth connection for system-segregated, wireless measuring application of the PC correlator over short distances |
√ |
|
Integrated receiver modules for radio sensors and wireless data loggers |
√ |
|
Integrated loudspeaker |
√ |
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Frequency-dependent coherence analysis |
√ |
|
Frequency-dependent correlation analysis |
√ |
|
Individual parameter setting for measured section |
√ |
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Individual parameter setting for measuring filter |
√ |
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Individual parameter setting for amplification |
√ |
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Chebyshev analogue filter |
√ |
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Calibration function |
√ |
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Logging function |
√ |
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GIS-compatible |
√ |
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High-pass filter adjustable |
√ |
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Low-pass filter adjustable |
√ |
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Manual analogous/digital filtering to fade out noises |
√ |
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Automatic analogous/digital filtering to fade out noises |
√ |
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Real-time clock |
— |
|
Record statistic minimum level of the previous night |
— |
|
Record level progress of the past 14 days |
— |
|
Record minimum level (AL) of the last 10 minutes |
— |
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Record maximum level (AH) of the last 10 minutes |
— |
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Record amplification |
— |
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Record measurement quality (rain, wind etc.) |
— |
|
Record logger serial no. |
√ |
|
Record logger location |
√ |
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Permanent data transmission (07:00 - 19:00 = 12/min) |
— |
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Permanent data transmission (19:00 - 07:00 = 1/min) |
— |
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Leak status indication |
— |
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Ultraflexible sensor head with integrated transmitter for pinpoint location |
— |
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Flexible but nevertheless thrust stable Polykat glass fibre |
— |
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Guiding reel made of robust aluminium |
— |
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Integrated mechanical length measuring device |
— |
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Integrated disinfectant tank |
— |
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Integrated pressure lock for connection to pressure water pipe |
— |
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Geka coupling with drinking water certificate |
— |
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Bluetooth transmitter |
— |
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Bluetooth headset |
— |
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Display of the amplification |
√ |
|
Display logger serial no. |
√ |
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Display minimum level (AL) of the last 10 minutes |
√ |
|
Display maximum level (AH) of the last 10 minutes |
√ |
|
Display statistic minimum level of the previous night |
√ |
|
Display level progress of the past 14 days |
√ |
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Display of the time of reading |
√ |
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