Simrad PI SPREAD, PI REMOTE Installation Manual

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Installation manual

Simrad PI Adapters for PI Spread and PI Remote

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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.

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: fish-support@simrad.com

Simrad AS Strandpromenaden 50 Box 111 N-3191 Horten

Telephone: +47 33 03 40 00 Facsim il e: +47 33 04 29 87

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

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.

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

(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

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

857-164919 / Rev.B

Installation manual

Before work begins

Proper preparation involves becoming familiar with all related documentation including:

• Drawings 830-208247 and 830-208246 in full size (1:1) printout.

With the proceeding information in mind:

• Determine the optimal sensor placement and orientation with regard to the intended operation of the vessel.

• Use the following procedures as a guide to create a specific work plan for the doors in question.

• Discuss and clarify all phases of the operation with the metalworker(s) performing the installation before beginning.

Procedure

Observe the procedure on the next pages.

Note The information contained in this procedure is to be used as a

guide. Deviations from the procedures listed may be necessary to accommodate a specific installation.

857-164919 / Rev.B

Simrad PI Sensor adapter installation

STEP 1: Cut openings in the doors for the sensor adapters

Using drawing 830-208247 as a guide, and mark off the areas to be cut out. Note that you need to have the drawing available in size 1:1.

Cut openings in the doors using an acetylene torch, check their accuracy against the full scale drawings when finished.

857-164919 / Rev.B

Installation manual

2) Orient the sensor adapters

Position the sensor adapters (port and starboard respectively) with the bottom portion just protruding through the back side of the door.

Carefully check that the adapters’ angle and orientation are as close to those described in the drawings.

857-164919 / Rev.B

Simrad PI Sensor adapter installation

STEP 3: Mark the desired position of the sensor adapters

With the senor adapter held firmly in the correct position, trace a line around it using the inside surface of the door as a reference point.

Remove the sensor adapter. Using a centre punch and hammer, score the the adapter so that this reference line will not be lost when the primer is removed.

857-164919 / Rev.B

Installation manual

STEP 4: Dismantle the sensor adapters

Remove the sensor adapters’ rubber inserts (two) before performing any hot work. Locking devices and internal plastic spacers may remain attached.

Note Over heating of either the sensor adapters or doors must be

avoided though out the installation procedure.

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

857-164919 / Rev.B

Simrad PI Sensor adapter installation

STEP 5: Weld the sensor adapters to the doors

Tack weld sensor adapters in position using the reference line created in step 3 as a guide. Check that both angle and orientation are in agreement with the drawings.

Permanently weld the sensor adapters to the doors using 7 to 10 cm long beads, it is not necessary to use a continuous weld.

857-164919 / Rev.B

Installation manual

STEP 6: Measure the dimensions of the protective cage legs

Using a yardstick bent at a ninety degree angle, measure the length of standard 20 mm diameter bar stock necessary for the apex of the protective cage to rise approximately 10 to 20 mm over the sensor adapters.

Note Mark the locations (on the doors) where the outboard protective

cage legs will be welded.

Cut and bent the bar stock accordingly.

857-164919 / Rev.B

Simrad PI Sensor adapter installation

STEP 7: Attaching the doubling plates

Place the appropriately sized doubling plates on the locations marked in step 6.

Temporarily holding the protective cage leg in place, check that the release mechanism operates freely.

Note There must always be enough space between a protective cage

and its respective sensor adapter so that in the event it becomes bent, the sensor may still be removed.

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Installation manual

STEP 8: Attach the outboard protective cage legs

Tack weld the protective cage legs to the doubling plates. Check the alignment in relationship to the sensor adapter and its release mechanism, adjust as necessary.

Weld the protective cage legs permanently in place.

857-164919 / Rev.B