Simrad PI DEPTH, Инструкция по эксплуатации

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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 Spread/Depth sensor when put to use with the PI catch
monitoring systems.
Purpose and applications
The purpose of the PI Spread/Depth sensor is to achieve accurate
measurements of both the water depth and the distance between
the two trawl doors. The PI Spread/Depth thus contains both
a pressure sensor to measure the water depth, and a sensor to
measure the distance to the Remote sensor on the other trawl
door. The results from these measurements are transmitted by
acoustic signals to the PI catch monitoring system mounted on
the vessel.
Figure 1 The PI Spread/Depth sensor application
C
(CD012200L)
A
B
E
(A) The Spread/Depth sensor is mounted in a special adapter
on the port trawl door.
(B) The Remote sensor is mounted in a special adapter on the
starboard trawl door.
(C) The Spread/Depth sensor communicates with the PI system
on the vessel.
(E) Using the transverse communication link, the two sensors
measure the physical distance between the trawl doors.
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