Instruction manual

Introduction
INTRODUCTION
Efficient fishery with trawl and purse seine assumes professional
and adequate instrumentation on the gear. Simrad has provided
professional instruments for fish finding for more than sixty years.
This user manual described installation, use and maintenance of
the PI Remote/Depth sensor when put to use with the PI catch
monitoring systems.
Purpose and applications
The purpose of the PI Remote/Depth sensor is to achieve accurate
measurements of both the water depth and the distance between
the two trawl doors. In order to measure the distance, it must be
installed in a pair with a PI Spread or PI Spread/Depth sensor.
Figure 1 The PI Remote/Depth sensor application
C
(CD012201B)
A
B
D
E
(A) The Spread sensor is mou
nted in a special adapter on the
port trawl door.
(B) The Remote/Depth se
nsor is mounted in a special adapter on
the starboard trawl do
or.
(C) The Spread sensor c
ommunicates the distance between the
trawl doors to the PI s
ystem on the vessel.
(D) The Remote/Dep
th sensor communicates the current depth of
the trawl door to t
he PI system on the vessel.
(E) Using the tran
sverse communication link, the two sensors
measure the phys
ical distance between the trawl doors.
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