Marport Trawl Speed User manual

Speed Sensors
Service Manual

Contents | ii
Contents
Legal.................................................................................................4
History...........................................................................................................................................................................4
Copyright......................................................................................................................................................................5
Disclaimer.................................................................................................................................................................... 5
Introduction and Presentation..........................................................6
Introduction................................................................................................................................................................6
Applications.................................................................................................................................................................7
Safety Guidelines......................................................................................................................................................9
About Water Speed and Trawl Geometry......................................................................................................10
Description.................................................................................................................................................................13
Firmware........................................................................................................................................................ 13
Technical Specifications...........................................................................................................................13
Main Parts..................................................................................................................................................... 17
Installation Steps....................................................................................................................................................19
Sensor Configuration......................................................................20
Installing Mosa2.....................................................................................................................................................20
Connecting the Sensor to Mosa2......................................................................................................................21
Speed Explorer Specific Settings......................................................................................................................23
Sounding Modes......................................................................................................................................... 23
Configuring the Uplink, Up and Down Settings...........................................................................23
Uplink................................................................................................................................................. 24
Up/Down Soundings.....................................................................................................................24
Target Strength..............................................................................................................................26
About Time Variable Gain...................................................................................................................... 27
Configuring Measurement Sending Sequence and True Mode................................................ 27
Configuring the Noise Floor..................................................................................................................29
Calibrating the Sensor for Target Strength Value.........................................................................30
Canceling the Ringing.............................................................................................................................. 33
Configuring Flow Sensor Telegrams.............................................................................................................. 36
Pitch & Roll..................................................................................................................................................36
Calibrating the Speed............................................................................................................................................37
Checking Speed Measures with EM Log Tester.........................................................................................39
Configuring the Uplink Power...........................................................................................................................41
Testing Measures....................................................................................................................................................41
Updating the Sensor............................................................................................................................................. 43
Downloading the Firmware................................................................................................................... 43
Updating the Sensor................................................................................................................................. 43
Exporting Sensor Configuration Settings for Record Keeping.............................................................44
Exporting Sensor Configuration Settings for the Receiver....................................................................45

Contents | iii
System Configuration and Display..................................................47
Adding the Sensor to the Receiver................................................................................................................. 47
Adding the Sensor with a Configuration File................................................................................. 47
Adding the Sensor Manually.................................................................................................................49
Adding the Sensor to the Receiver.........................................................................................49
Configuring the Sensor Settings.............................................................................................. 51
Configuring Sensor Display on Scala/Scala2...............................................................................................53
Outputting Scala/Scala2 Symmetry Data to Scantrol.............................................................................. 57
Installation..................................................................................... 60
Installing Speed Sensors on the Trawl.........................................................................................................60
Servicing and Maintenance.............................................................63
Interference Check.................................................................................................................................................63
Spectrum Analyzer Display....................................................................................................63
Checking Noise Interference.................................................................................................64
Checking Noise Interference.................................................................................................65
Charging the Sensor............................................................................................................................................. 68
Maintenance.............................................................................................................................................................69
Cleaning the Sensor..................................................................................................................................70
Maintenance Checklist..............................................................................................................................71
Replacing Parts........................................................................................................................................... 72
Removing and Putting Back the Housing............................................................................72
Replacing the Batteries................................................................................................................73
Replacing the Shoulder Bolts....................................................................................................75
Replacing the Pressure Sensor.................................................................................................77
Replacing the Pressure-Relief Spring....................................................................................81
Replacing the Temperature Sensor........................................................................................84
Troubleshooting......................................................................................................................................................87
Firmware downloaded on DealerWeb cannot be read by Mosa2.............................................87
Mosa2 does not open due to error message...................................................................................87
Sensor has difficulty connecting to Mosa2..................................................................................... 87
Sensor cannot connect in wireless connection..............................................................................87
Data in Scala/Scala2 is wrong..............................................................................................................88
Echogram is fixed and blue.................................................................................................................. 89
Speed data is wrong.................................................................................................................................89
Support Contact.......................................................................................................................................................91
Appendix.........................................................................................92
Frequency Plan........................................................................................................................................................92
Appendix B: Examples of Installations for a Target Strength Calibration...................................... 97
Appendix C: Technical Drawing of Protective Cage.................................................................................99
Index................................................................................................................101

Speed Sensors | V5 | Legal
Legal
History
V1 07/12/17 First release
V2 03/09/18
New topic:
•About Time Variable Gain on page 27
Improved topic:
•Replacing Parts on page 72: improved layout and
pictures.
V3 07/06/18
New topic:
• Troubleshooting: Sensor cannot connect in wireless
connection on page 87
Improved topic:
•Interference Check on page 63: more detailed
information about Spectrum page.
V4 11/30/18
Improved topic:
•Frequency Plan on page 92: drawings have been
changed, frequencies are now allocated between 34 kHz
and 36 kHz and frequency ranges of narrowband and
wideband hydrophones are indicated.
V5 07/16/20 Now documents Mosa2 version 02.03, Scala version
01.06.34 and Scala2 version 02.02.
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Speed Sensors | V5 | Legal
Copyright
© 2020 Marport. All Rights reserved.
No part of this document may be reproduced, stored in a retrieval system or transmitted in any
form by any means; electronic, mechanical, photocopying or otherwise, without the express
written permission from Marport. “Marport ”, the Marport logo and Software Defined Sonar are
registered trademarks of Marport. All other brands, products and company names mentioned
are the trademark and property of its respective owners only. Marport is a division of Airmar
Technology Corporation.
Disclaimer
Marport endeavors to ensure that all information in this document is correct and fairly stated, but
does not accept liability for any errors or omissions.
The present user guide is applicable for the following versions:
• Scala: 01.06.06-01.06.34 / Scala2: 02.02
• Mosa2: 02.03
Patents apply to products. U.S. Patents 9,772,416; 9,772,417
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Speed Sensors | V5 | Introduction and Presentation
Introduction and Presentation
Read this section to get a basic knowledge of your Speed sensor.
Tip: Click Marport logo at the bottom of pages to come back to the table of contents.
Introduction
Marport’s speed sensor family includes two categories of sensors:
•The Flow sensors, that include the Trawl Speed sensor, Grid sensor and Symmetry sensor.
•The Speed Explorer
They all track pitch and roll data. Each of them has different functions and purposes.
The Grid sensor is placed on the grid of a trawl. It tells you if the grid does its job: selecting out the
unwanted catch while target species enter the codend. It monitors the angle of the grid and the
flow of water passing through it. This way, you know if the grid is twisted or blocked and you can
fix the problem before losing significant catches.
The Trawl Speed sensor can be placed on the headline. It measures water flow in two axis: the flow
along the direction of the trawl and across it. You can control if the trawl is moving at the right
speed and with the right geometry. It measures along speed up to 6 knots and cross currents speed
up to 3 knots.
The Symmetry sensor is placed on the headrope. It measures the across speed, so that you can
control if the trawl is perpendicular to the current.
Finally, the Speed Explorer has the functions of a Trawl Speed sensor and a Trawl Explorer sensor
combined. Placed on the headrope or tunnel, it measures water flow along the direction of the
trawl (up to 10 knots) and across it (up to 3 knots) and displays an echogram. This way, you can
see fish passing through the trawl and have an overview of the trawl’s opening and the effects of
the currents around it. It also track pitch & roll, depth and temperature data. Data is received more
often than with the other speed sensors.
Speed sensors are compatible with Scantrol software.
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Speed Sensors | V5 | Introduction and Presentation
Note:
These labels tag topics or actions that are specific to Scala and/or Scala2.
Depending on the version you have, you may follow either one of these labels.
Applications
Here are some examples of data received from Grid, Trawl Speed and Speed Explorer sensors and
displayed in Scala/Scala2.
Grid sensor display
1. Control the angle of the grid (45°) / 2. Check the water flow to know if the grid is blocked
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Speed Sensors | V5 | Introduction and Presentation
Speed Explorer display
1. Seabed / 2. Target strength (only for V3 version of sensors) / 3. Haddocks / 4. Trawl opening / 5.
Trawl Speed dial: displays water across and along speeds.
Trawl Speed 3D view
1. Control if the trawl opening has the correct angle. Across speed needs to be around 0.
2. Control the speed of the water along the trawl, and adjust your speed according to the currents.
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Speed Sensors | V5 | Introduction and Presentation
Safety Guidelines
Important: To ensure proper and safe use of this equipment, carefully read and follow the
instructions in this manual.
Basic good practices
When using the product, be careful: impacts can cause damage to the electronic components inside.
Never place the product in a hazardous and/or flammable atmosphere.
Product installation and use
Install and use this product in accordance with this user manual. Incorrect use of the product may
cause damage to the components or void the warranty.
Only qualified Marport dealers can do maintenance and repairs on internal components of the
sensors.
Precautions
Warning: In case of water ingress in the product, do not charge it: battery may vent or
rupture, causing product or physical damage.
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Speed Sensors | V5 | Introduction and Presentation
About Water Speed and Trawl Geometry
Along Water Speed
The along water speed is the trawl longitudinal speed through water (relative to the water). It is
different from the GPS speed. The GPS speed of the vessel is the speed of the vessel relative to
the ground. The along water speed depends on the current, bearing, pitch and roll of the trawl or
vessel.
The trawl and fish are in the same frame of reference: water. Therefore, it is important to know the
speed of the trawl through water. Each type of fish has his own speed and behaviour. If you know
the water speed in the trawl, you will be able to adapt the speed for the fish you are looking for.
For example, you want the trawl speed to be at 5 knots relative to the water, and you have a GPS
speed of 5 knots:
• If the along water speed is inferior to the GPS speed, it means there is a co-current. If the trawl
does not go fast enough, fish could go faster and escape the trawl. So, for example, if the along
water speed is at 4 knots, it means there is a co-current of 1 knot. You need to increase the GPS
speed of at least 1 knot to make the trawl go faster.
• If the along water speed is superior to the GPS speed, it means there is a counter-current. If the
trawl goes too fast against the current, there will be pressure inside the trawl and fish may get
damaged or ejected. You will also increase your fuel consumption. So, for example, if the along
water speed is at 7 knots, it means there is a counter-current of 2 knots. You need to decrease
the GPS speed of 2 knots, to be at 5 knots through water.
A. The along water speed is 4 knots (1) and the GPS speed of the vessel is 5 knots (3). It means there
is a co-current of 1 knot (2). You need to increase the GPS speed of 1 knot.
B. The along water speed is 7 knots (1) and the GPS speed of the vessel is 5 knots (3). It means there
is a counter-current of 2 knots (2). You need to reduce the GPS speed of 2 knots.
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Speed Sensors | V5 | Introduction and Presentation
Across Water Speed
Your trawl opening must be perpendicular to the current in order to catch more fish. The sensors
measure the across water speed, that allows you to know if the trawl opening is perpendicular or
not.
If the trawl is not perpendicular to the current, it can impact its geometry and create non-
uniformity in the mesh size. As a result, you could catch non-targeted species.
When the across speed displayed on Scala/Scala2 is 0, it means the trawl is perpendicular. If it is
superior, it means the trawl is not well positioned and you may loose fish. You need to adjust the
warp length to make the trawl face the current.
Single Trawl
Twin Trawl
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Speed Sensors | V5 | Introduction and Presentation
To see the water speeds and identify the trawl position, from Scala/Scala2, look at the Trawl Speed
3D view or Trawl Speed dial.
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Speed Sensors | V5 | Introduction and Presentation
Description
Firmware
Each category of sensors have different options.
Product
Category
Product Name Specific Options Firmware Name Firmware
Number
Trawl Speed Along and across
speeds
Symmetry Across speed onlyFlow sensors*
Grid Along speed and grid
angle
3N1 V2 with pitch
and roll
FIRM058
TE/TS V2 Echogram with
autorange, depth,
temperature, along &
across speeds.
TE/TS FIRM056
Speed Explorer
TE/TS V3
Echogram with
autorange, target
strength values, depth,
temperature, along &
across speeds.
TE/TS V3
FIRM059
*Firmware for Flow sensors is the same for the 3 types of products. The type of product needs to be
configured on Mosa2. You can also activate/deactivate the pitch and roll option on Mosa2.
Technical Specifications
Flow sensors
Uplink frequency 30 to 60 kHz
Range to vessel up to 2500 m*
Data update rate Along/across speed: trawl speed and grid max.
every 14 sec. - Symmetry: max. every 28 sec. -
Pitch&Roll: 8 to 15 sec. (depends on settings)
Depth range up to 1600 m
Depth resolution 0.1m with 0.1% accuracy
Pitch angle ±90°
Roll angle ±180°
Pitch & roll accuracy ±0.1°
Temp measurement range -5° C to +25° C
Temp accuracy ±0.1° C
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Speed Sensors | V5 | Introduction and Presentation
Across speed range Up to ± 3 knots
Along speed range Up to ± 6 knots
Speed resolution 0.1 knot
Across and along speed accuracy ±0.1 knot
Typical battery life Up to 80 hours**
Standard: 8-12 hours †Charging time
Fast charge: 4 hours
Battery type Lithium-Ion
Weight of Trawl Speed and Symmetry
sensors (sensor + protection cage) in air
22.4 kg
Weight of Trawl Speed and Symmetry
sensors (sensor + protection cage) in water
13 kg
Weight of Grid sensor and protection cage in
air
19 kg
Weight of Grid sensor and protection cage in
water
11.3 kg
Warranty 2 years (Sensor & Battery) ‡
Speed Explorer
Uplink frequency 30 to 60 kHz
Range to vessel up to 2500 m*
Sounder broadband frequency Configurable between 120-210 kHz
Sounder range 5 to 160 m
Data update rate Depth: 1-8 sec. - Temp/Battery/Altitude/
Pitch&Roll: every 6 sec. - Along/Across speed: every
7 sec.
Echogram update rate Up to 3 images per second
Pitch angle ±90°
Roll angle ±180°
Pitch & roll accuracy ±0.1°
Depth resolution 0.1m with 0.1% accuracy
Temp measurement range -5° C to +25° C
Temp accuracy ±0.1° C
Across speed range Up to ± 3 knots
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Speed Sensors | V5 | Introduction and Presentation
Along speed range Up to ± 10 knots
Speed resolution 0.1 knot
Across and along speed accuracy ±0.1 knot
Typical battery life Up to 50 hours**
Standard: 8-12 hours †Charging time
Fast charge: 4 hours
Battery type Lithium-Ion
Weight of sensor + protection cage in air 22.4 kg
Weight of sensor + protection cage in water 13 kg
Warranty 2 years (Sensor & Battery) ‡
*Reference only. Depends on functions enabled. / †Based on average charging time. / ‡Marport
Standard Marine Limited Warranty / **Depends on sensor uplink power.
Speed Explorer Beamwidths
Beamwidths for Uplink pings:
Beamwidth @ 35 kHz @ 50 kHz @ 60 kHz
-3dB 46° 40° 30°
Beamwidths for Up and Down pings:
Beamwidth @ 125 kHz @ 160 kHz @ 200 kHz
-3dB 26° 24° 22°
Outline Dimensions
Trawl Speed, Symmetry and Speed Explorer sensors
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Speed Sensors | V5 | Introduction and Presentation
Grid sensor
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Speed Sensors | V5 | Introduction and Presentation
Main Parts
External View
1. Temperature
sensor
2. Negative charge
3. Water switch
4. Positive charge
5. Shoulder bolts
6. Pressure-relief
spring
7. Pressure sensor
8. EM log pins
9. Latch
CAUTION:
• Do not put foreign objects into pressure sensor opening or try to open it.
• Do not remove the shoulder bolts from the outside of the sensor.
It may damage the components.
Exploded View
1. Transducer
2. Sarah Connor PCBA
3. Battery
4. End cap
5. Sensors
6. EM log
7. A1 PCBA
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Speed Sensors | V5 | Introduction and Presentation
PCBA Connectors
1. Sarah Connor PCBA
2. A1 PCBA
3. EM log
Sarah Connor PCBA A1 PCBA
1. Connection to A1 PCBA
2. Electromagnetic coil
3. EM log pins
1. Battery connector
2. Down connector
(A)
3. Up connector (B)
4. Water switch
5. Uplink (C)
6. Connection to
Sarah Connor PCBA
7. Pressure and
temperature
connector
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Speed Sensors | V5 | Introduction and Presentation
Installation Steps
Click an installation step to jump directly to the corresponding section.
Note: You can customize the display of data on Scala/Scala2 at any time.
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