Gutermann Aquascope3

Gutermann Aquascope 3 Leak Locator Training Video

These systems listen for the sound of a leak. They have a digital signal processing designed to remove electrical noise and provide the operator with only the sound of the leak. The system includes both ground microphones and hand probe microphones. The display indicates the level of the noise from the leak, that way you can determine when you are nearest to the leak i.e. when the level is at its highest.

The handling of the instrument is very easy and to a great extent, self-explanatory. However, should you have any problems or questions, please contact your nearest Gutermann office or local customer service centre for assistance.

The system components
Depending on which system has been ordered, the AQUASCOPE-3 is supplied in 3 different configurations:
• 1 Amplifier with waist belt
• 1 Stereo headphones
• 1 Connecting cable
• 1 Ground microphone
• 1 Ground-mike rod
• 1 Hand-probe microphone
• 3 Probe rods
• 1 Tripod foot

Using the ground microphone:
Screw the ground mike rod with the black handle into the ground microphone and connect the cable both to the black handle and to the bottom side-connector of the amplifier.

Using the hand-probe microphone as a listening stick:
Screw as many of the probe rods together as appropriate, and screw the rod into the hand-probe sensor. The hand-probe is used for direct sounding on pipes and fittings. For direct sounding we recommend to normally use the “filter off” mode.

Using the hand-probe with tripod foot for surface sounding on soft ground: On soft ground such as lawn, the contact of the ground microphone sensor with the ground surface is often insufficient. Screw the magnet into the sensor and attach the sensor to the tripod foot. The connecting cable can be used to place, lift or move the hand-probe.

How to switch on the amplifier:
The amplifier has no on/off switch. As soon as the connecting cable is plugged into the amplifier, the amplifier is switched on and will remain in stand-by mode until the cable is unplugged. When switched on (stand-by mode), the display will show the battery charge, filter setting, volume setting, and the signal strength. Caution: In order to save battery consumption, please ensure that the cable is disconnected from the amplifier after using the AQUASCOPE-3.

How to listen to the leak noise:
On the upper side of the amplifier, on the left-hand side of the display, is the “listen” button. When pressing this button, the operator can listen to the leak noise. When releasing the button, the amplifier will return to the mute mode.

How to read the display:
The following information is found on the display:

  1. Filter setting: On the upper left-hand corner the filter setting is shown. Either “Filter off” or “Filter on” plus the centre value of the selected band-pass (e.g. 700 Hz).
  2. Battery charge: On the upper right-hand corner is a battery symbol indicating the actual battery charge.
  3. Volume: In the upper part of the display from left to right is a bar showing the selected volume level.
  4. Signal strength: In the lower part of the display, starting from the left-hand side, the actual signal strength is indicated in the signal strength bar.
  5. Minimum noise level: On the lower right-hand corner, the lowest noise level (value between 00 and 99) is indicated during a listening session. From the moment the “listen” button is pressed (until released), the AQUASCOPE-3 automatically samples and records the lowest noise level, indicating the true leak noise without ambient interference. When the “listen” button is released, this value will automatically be saved in the memory. The last 8 leak values can be recalled on your display.

How to select and change your filter setting:
On the front label you will find 5 keys which allow selection and change of the settings at any given moment. After a few minutes of familiarisation with the amplifier it should be possible for the operator to change all the settings without even looking at the instrument. When looking at the amplifier from above while comfortably wearing it with the waist belt, on the left hand side of the label are 2 keys serving the filter setting/selection. When pressing both filter keys simultaneously, the filter mode can be switched on or off. The state of the actual filter mode is indicated on the display. The instrument will always return to the last setting.

When in “filter off” mode, the operator can listen to the leak noise in all bands. This mode is recommended when using the hand-probe as a listening stick.

When ambient noises and background interference disturb the leak sounding survey, the operator can switch to the “filter on” mode. This will activate a narrow band pass filter which can be infinitely adjusted using the upper key to increase or the lower key to reduce the frequency level in order to suppress any unwanted interference and background noise, and to reduce the audible range to the exact leak noise frequency. On the display the selected setting is indicated by “filter on” plus the centre value of the actual band pass currently being used.

How to select and change the volume:
When looking at the amplifier from above while wearing it with the waist belt, on the right-hand side of the label are the 2 keys to adjust the volume in the headphones. The lower key is used for reducing the volume, the upper key for increasing the volume.

How to switch on and off the backlight:
By pressing both “volume keys” simultaneously (on the right-hand side of the label while looking from above) the backlight can be switched on or off as desired.

Caution: When the backlight is switched on, the battery consumption will triple and thus reduce the battery life. In order to save battery consumption: If for a period exceeding 10 seconds none of the keys including the “listen” button is pressed, the backlight will automatically be switched off. As soon as any of the keys are pressed, the backlight will automatically switch on again.

How to display the memorised leak noise levels:
The true leak noise level is always indicated as a digital value between 00 and 99 on the lower right-hand corner of your display. When releasing the “listen” button, this value will automatically be stored in the amplifier memory. When pressing the “m” key in the centre of the label the last 8 leak noise levels can be compared, showing the oldest level on the left-hand side and the most recent measurement value on the right-hand side.

How to change batteries:
At the back of the amplifier is the battery compartment. Please lift the battery compartment cover. There are 4 LR6 size alkaline batteries. When the battery charge indicator on the display suggests replacing the batteries, please make sure that all 4 batteries are replaced at the same time. When inserting the batteries please observe the correct direction (+ and – according to the indicated position).

Additional Resources

Datasheet (pdf)