Operation Manual

Simrad PI54
152
850-165186 / Rev.B
Mounting
The Spread and Remote sensors must be mounted in special
adapters on each trawl door and on the centre clump. These
adapters must be installed aforehand. Detailed information on
how to install the adapters are provided with the i nstallation kit.
Installation principle
The P I Twin Spread sensor is mounted on the port door. One PI
Remote sensor is mounted on the center clump, while the other
Remote sensor is mounted on the starboard door. It is essential
that there is a clear line of sight between the transverse
communication “eyes” (one on each sensor), and between the
top of the PI Twin Spread sensor and the hydrophone on the
vessel.
Top view:
(A) = Port trawl
(B) = Starboard trawl
(C) = Port door with the
PI Twin Spread sensor
mounted in an adapter.
One acoustic
communication link is
directed forward towards
the vessel, while two are
directed towards the two
Remote sensors.
(D) = Center clump with
one Remote sensor
(E) = Starboard door with
the other Remote sensor
(F) = Forward
In a Twin Spread 1 set-up,
the two remote sensors
would need to be Remote
1 and Remote 3.
Sacrificial water switch sensor
If the water switch on your sensor is a sacrificial brass screw,
this screw must be checked every month. Whenever required
due to wear and tear, the screw must be replaced. Refer to the
Operational procedures in the operator manual.