Used instruments

USED, FACTORY REFURBISHED, CALIBRATED!

The HL 5000-Pro from SebaKMT (Germany) is a factory-refurbished ground microphone - a device for locating water leaks by acoustic method.

Benefits

• Unique combination of ground microphone and tracer gas detector
• Everything included in a set (control unit, ground microphone, H2 sensor)
• Highest location precision due to visualisation of up to nine measuring points (gas concentration / sound)
• Highest sensitivity for tracer gas detection

With the modern series of Hydrolux equipment HL 5000 H2, you can find leaks particularly quickly, easily and reliably. The equipment uses modern digital signal processing technology (DSP) to clearly recognise the leak sound, even when there is a lot of noise in the environment. The sounds are not just perceived audibly, but are also displayed graphically
using ultra-modern dual segment analysis (DSA) technology. For the user this means more reliability when locating water losses.

How does acoustic leak location work?

With a damaged pipe, water streams out of the leak producing two types of noise:
1. The water flowing out of the pipe causes it to vibrate. With the Hydrolux and an attached icrophone, you can hear these leak vibrations even at remote locations where contact with the pipe is possible (valve, hydrant, connection to a building etc.)
2. The water issuing at the leak location creates sounds which are transmitted through the ground to the surface. With the help of a ground microphone, the Hydrolux picks up these sounds and graphically displays the volume and the frequency spectrum.

How does tracer gas / test gas measurement work?

The use of tracer gas for locating leaks in water pipes with electronic gas detection equipment has been tried and tested for several years.
To find a leak, the pipe to be investigated is filled with tracer gas (forming gas - 5% hydrogen and 95% nitrogen) through a hydrant or house connection. This escapes from the leak and is precisely located at the surface. Owing to its low specific density and molecular structure, tracer gas has the particular characteristic of quickly penetrating all materials (concrete, tiles, tarmac etc.) and rising vertically, where it can then be detected using the HL 5000 H2.
Due to its precise and quick reaction, the HL 5000 H2 is ideal for accurately locating even the smallest of leaks.

Specification:
LCD display                                                           x
DSA technology                                                     x
DSP technology, 16 bit audio codec                      x
Histogram                                                              x
Drag display                                                           x
Fixed filter sets                                                       x
Back-light                                                               x
Software updates                                                   x
Sound insulation to VBG121 (< 85 dB)                  x
Weight                                                           1200 g
Dimensions                       (L x B x H) 215 x 95 x 110 mm
Operating time                  ≥ 35 h, Tracer gas operation > 8 h (optional for H2 model)
Power supply                  10 x Mignon 1.5V Alkaline 
Connection options:         PAM W-2, PAM B-2, PAM T-3, H2 Sensor

Equipment:
Data analysis / control unit HL 5000
Ground microphone PAM B-2 with handle
PAM B-2 adapter / tripod
Senheizer headphones
Transport / storage case