Edgetech USBL BROADBAND ACOUSTIC TRACKING SYSTEM, User Hardware Manual, Page: 59 / 102

3-13
3.2.1 4213C-B Suggested MTG for Sealed Shaft Installation
The Model 4213C-B Transducer is 2.875” (7.3cm) diameter X 17.5” (44.53cm) length [does not include 1.85"
(2.16 cm) bulkhead connector] and is calibrated in the 17 to 30kHz frequency band for the receiver and tuned
to 15 to 23kHz for the transmitter.
The Model 4213C Hydrophone can also be installed through a hull mounted gate valve. The hydrophone is first
installed in a mounting staff and the mounting staff is projected through a gate valve. This allows for ease of
deployment, recovery and maintenance of the hydrophone.
F
IGURE
3-10 (0010007) shows the suggested
machining dimensions necessary for mounting the hydrophone to an extension shaft (Flanged). An example of
a gate valve type mounting arrangement for Hydrophone installation is shown in
F
IGURE
3-11 (0020019). A
complete installation is shown in F
IGURE
3-12 .
For information on the Model 4630D Motorized Gate Valve System contact E
DGE
T
ECH
C
USTOMER
S
ERVICE
.
NOTE: The slot opposite the “BOW” alignment mark in the staff is for the
AFT alignment pin.
When designing the hydrophone mount/deployment system keep in mind that the shaft be keyed to allow
a repeatable bearing orientation. This ensures that the bow reference always returns to the same fixed
position when the hydrophone is deployed.
The gate valve/mounting staff assembly should be installed in as close to a vertical position as possible.
The hydrophone mount can be installed offset from the centerline of the vessel. An X and Y offset can be
input to the PC to correct for these offsets. Refer to sub-section
3.3 H
YDROPHONE
O
FFSETS
.
The Deck Cable mates to the Hydrophone by lining up the pins in both connectors and pushing together.
Locking sleeves hold the mated connections together.
See
F
IGURE
3-7
and
F
IGURE
3-9
for the Model 4113C and 4113C-DT cable assemblies.