Aquarian Audio Products H3 Benutzerhandbuch - Seite 2
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The H3 hydrophone can be optionally assembled with our WT150g sliding stainless steel weight assembly for
sinking the hydrophone. There are several advantages to placing the weight on the cable, rather than building it
into the hydrophone. When the hydrophone is dropped, the cable flexes and deflects that impact away from the
hydrophone. The weight can be moved if needed to allow insertion into a pipe. Both of these attributes are
especially useful to the leak detection specialist. Moving the weight away from the hydrophone dampens
acceleration noise that is transmitted down the cable from handling and it also minimizes response irregularities
caused by material resonances and sound reflections. To move the WT150g weight, turn the black plastic
thumbscrew counter-clockwise to loosen the the internal rubber compression sleeve and slide the weight where
needed. Wet the cable if this is difficult. Secure again by turning the thumbscrew clockwise. Be Advised: Finger-
tighten thumbscrew only and always leave a minimum spacing of 5cm (2 in.) between hydrophone and weight!
Hydrophone care
No special care is required for the H3. It is designed to withstand corrosion and the impact of accidental
drops, but making an attempt to keep the output plug clean and dry and avoiding unnecessarily rough handling will
help to ensure the long-term stability of the product. It is best not to store the hydrophone in a waterproof
enclosure. Doing so will trap moisture, salts and minerals that are left on the hydrophone and cable after
deployment and increase corrosion problems with the output plug. Making an extra effort to coil the cable nicely
when retrieving the hydrophone will help avoid problems with tangles as the cable ages. Most importantly, protect
the cable from cuts and abrasions! The H3 uses a custom-made cable with a very durable urethane jacket.
However, it is also designed to be compact and flexible. Kinking the cable, walking on it, or dragging it over a
sharp or abrasive surface may damage the cable sheath and eventually cause the hydrophone to fail. Both aquatic
and terrestrial animals may attack the cable in an unattended application. Using some kind of cable shroud, such
as plastic tubing, can help protect the hydrophone in long-term installations.
Specifications
Sensitivity:
Useful range:
Polar Response:
Operating depth:
Operating temperature: -10 to 65 Celcius
Nominal Capacitance:
Output impedance:
Power:
Physical:
Dimensions:
Mass:
Specific Gravity:
Warranty Statement
Aquarian Audio Products warrants the H3 Hydrophone from electrical failure or defects in workmanship for a
period of one year following the date of purchase. Warranty claims or repairs can be made directly through
Aquarian Audio Products. Corroded output plugs are not covered under warranty. Additional terms and conditions
apply. For full details please view our general warranty statement at
-192dB re: 1V/Pa
<10 Hz to >100KHz
Omnidirectional
<80 meters
15nF
2.2 K
0.6 mA
17mm x 32mm
10 grams
1.3
5677 Patricia Lane Anacortes, WA 98221
(360) 299-0372
www.AquarianAudio.com
(+/- 5dB 20Hz-10KHz)
H3m and H3x versions may have improved sensitivity, dependent on the bias
voltage and input impedance of the preamp with which they are used.
(not measured above 100KHz, approximate sensitivity
@100KHz = -230dB re: 1V/Pa)
<10KHz
H3 and H3b configurations
depends on mic preamp
depends on mic preamp
(cable and output plug excluded)
http://www.aquarianaudio.com/warranty.html
Aquarian Audio & Scientific
A division of AFAB Enterprises
USA