Simrad PI SPREAD, PI REMOTE Installation Manual

Installation manual

Simrad PI
Adapters for PI Spread and PI Remote

www.simrad.com

M A X I M I Z I N G Y O U R P E R F O R M A N C E A T S E A

Document information

Rev Date Written by Checked by Approved by

Rev.B

18.02.05 RBr BØJ KR

Additional drawings and explanations added.

© 2005 Simrad AS.
ISBN 82-8066-043-7
All rights reserved. No part of this work covered by the copyright hereon may be

reproduced or otherwise copied without prior permission from Simrad AS.
The information contained in this document is subject to change without prior notice.

Simrad AS shall not be liable for errors contained herein, or for incidental or
consequential damages in connection with the furnishing, performance, or use of this
document.

The equipment to which this manual applies must only be used for the purpose for which
itwasdesigned.Improperuseormaintenancemay causedamagetotheequipment or injury
topersonnel. The usermustbefamiliar with the contents of the appropriate manualsbefore
attempting to operate or work on the equipment. Simrad AS disclaims any responsibility
fordamageorinjurycausedbyimproperinstallation,useormaintenanceof theequipment.

If you require maintenance on your Simrad equipment, contact your local dealer. You can
also contact Simrad using the following e-mail address: [e-mail]

Simrad AS
Strandpromenaden 50
Box 111
N-3191 Horten

Telephone: [phone]
Facsim il e: [phone]

M A X I M I Z I N G Y O U R P E R F O R M A N C E A T S E A

INSTALLING SENSOR ADAPTORS

Introduction

The PI Spread and PI Remote sensor adaptors must be
properly installed, and their protective cages fabricated correctly
for the system to operate as designed. Misaligned sensors or
cages that interfere with the sensors’ communication signals will
negatively effect system performance. It is therefore highly
recommended that the installation of the PI Spread and PI
Remote sensor adapters not be hastily undertaken, but rather
carefully planed and then executed.

Installation manual

857-164919 / Rev.B

1

Simrad PI Sensor adapter installation

Installation keypoints

The PI Spread sensor must be mounted on the port door.
The PI Remote sensor must be mounted on the starboard door.
The installation of the adapters must ensure that there is an

unobstructed line of sight between the sensor “eyes” for the
transverse communication link. Also, there must be a free line
of sight between the spherical head of the PI Spread sensor and
the vessel to ensure an operational communication link.

For bottom trawling, the sensor adapter should be mounted to
the upper part of the trawl door, and preferably at a place with
minor influence on the centre of gravity. Consult the trawl door
manufacturer or supplier if in doubt.

Adjust the tilt angle of the adapters according to your needs. 20
degrees is common for normal operation.

The adapter is designed to compensate for an angle of attack of
approximately 40 degrees. The templates also provide lower
angles.

Note The two rubber inserts provided must not be replaced with any

other types or designs. It is essential that these inserts provide a
secure cradle for the sensors, but they must also allow for free
water circulation to allow the sensor’s water switch to engage.
Also, the design of the inserts allows sand and mud to flow out
when the trawl doors are pulled up from the water.

The sensor adapters are manufactured from carbon steel, and
must be welded to the trawl doors. For mounting on wooden
trawl doors, dedicated mounting plates are available. The
adapters must be surface treated to withstand the wear and tear.

Weight

PI Spread adapter, weight in water without sensor: 9.8 kg
PI Spread adapter, weight in water with sensor: 12.5 kg
PI Remote adapter, weight in water without sensor: 8.8 kg
PI Remote adapter, weight in water with sensor: 10.1 kg

Optional supply

Mounting plate for PI Spread adapter for wooden door, use
order no. 599-207541.

Mounting plate for PI Remote adapter for wooden door, use
order no. 599-207551.

2

857-164919 / Rev.B

Installation manual

The PI Spread and PI Remote
sensors:

(A) = Negative charging and
fastening lug

(B) = Positive charging and fastening
lug

(C) = Communication link to vessel’s
hydrophone. Free line of sight must
be provided.

(D) = Location of sensor lamp (rear
side on PI Spread)

(E) = Water switch sensor, must have
free access to the water once the door
and sensor is deployed.

(F) = Transverse communication link,
you must have free line of sight
between the Spread and Remote
sensors.

Trawl doors seen from the vessel:

(A) = Port door, (B) = Starboard door, (C) = PI Spread sensor, (D) = PI Remote sensor
(E) = Transverse communication link, must have free line of sight between the Spread

and Remote sensors.

857-164919 / Rev.B

3

Simrad PI Sensor adapter installation

Location of sensor
adapters:

(A) = Starboard door
(B) = Port door
(C) = PI Remote sensor

adapter (499-207615)
(D) = PI Spread sensor

adapter (499-207613)
(E) = A protection cage is

highly recommended for
both adapters. It can be
manufactured from ø20
mm bars. Consider easy
access to release
mechanism and security
wire.

(F) = Angle of attack
(G) = 20 degrees tilt

angle
(H) = Communication

link to vessel’s
hydrophone

(I) = Transverse
communication link

(J) = Direction of tow

4

857-164919 / Rev.B