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Trawl Explorer | V5 | Servicing and Maintenance

Replacing the Pressure Sensor

Before you begin

Before installing, check on the end cap that there is this pressure-relief symbol. It shows
that your sensor has a pressure-relief spring.

To replace the pressure sensor, you need a replacement kit containing:
• Install tool
• Metal ring (only if pressure-relief spring)
• Pressure sensor
• Small O-ring
• Adapter ring
• Screw
• Pressure-relief spring (if applicable)

You also need the following tools:

Allen keys:

1.5 mm, 1/8"

Flat head

screwdriver,

size 8 to 10

Tweezers

Wire stripper

Crimping tool

O-ring

lubricant

(Molykote 55

o-ring grease)

Loctite 425

About this task

Only qualified Marport technicians can do this task.

Procedure

Remove the retainers around the PCBA to get access to the connectors.

Содержание Trawl Explorer

Страница 1: ...Trawl Explorer Service Manual...

Страница 2: ......

Страница 3: ...rength 21 About Time Variable Gain 22 Configuring Measurement Sending Sequence and True Mode 23 Configuring the Noise Floor 25 Changing the Transducer and End Cap Orientation 26 Changing the Transduce...

Страница 4: ...g the Sensor 62 Maintenance Checklist 63 Replacing Parts 64 Removing and Putting Back the Housing 64 Replacing the Batteries 65 Replacing the Shoulder Bolts 68 Replacing the Pressure Sensor 70 Replaci...

Страница 5: ...roved layout and pictures V3 07 06 18 New topic Troubleshooting Sensor cannot connect in wireless connection on page 80 Improved topic Interference Check on page 55 more information about Spectrum pag...

Страница 6: ...gistered 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...

Страница 7: ...and fish entering the net Also on the echogram the distance between the footrope and seabed to see if the gear touches the bottom Depth data Temperature data Pitch and roll data Distance from the sens...

Страница 8: ...n and Presentation Applications This is an example of data received from a Trawl Explorer sensor and displayed in Scala Scala2 Trawl Explorer display from the trawl headrope 1 Sea bottom 3 Fish 2 Targ...

Страница 9: ...side 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 c...

Страница 10: ...o 80 m V3 5 to 160 m Data update rate Depth 1 8 sec Temp Battery Height Pitch Roll every 6 sec Echogram update rate V1 up to 1 image second V2 V3 up to 3 images second Pitch angle 90 Roll angle V1 90...

Страница 11: ...External View 1 Retainer screw 2 Model serial number 3 Metal strap 4 Transducer 5 Stabilizer board 6 Pressure sensor 7 Temperature sensor 8 Positive charge 9 Negative charge 10 Water switch 11 Should...

Страница 12: ...Batteries 5 Sensors PCBA Connectors 1 Uplink C 2 Uplink LED 3 Down LED 4 Up LED 5 Pressure and temperature 6 Water switch 7 Up B 8 Down A 9 Battery The name of the sounding channel is labeled on its...

Страница 13: ...Trawl Explorer V5 Introduction and Presentation On the transducer up and down sounders are written with the letters A down and B up On older sensors down sounder is marked by a circle 12...

Страница 14: ...LED Charging Charger plug is connected Batteries are charging No light Running Sensor is in water or activated with jumper After an initialization phase echo sounder is operating Flashing red Configur...

Страница 15: ...xplorer 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 t...

Страница 16: ...efault aspx 2 Select Sensors Tools The list of available Mosa2 software versions is displayed The list begins with the latest versions 3 Click Download next to the version you want 4 Click the downloa...

Страница 17: ...ivacy b Click the lock icon and enter the password if applicable c At Allow apps downloaded from select Anywhere then close the dialog box d If you are under macOS Sierra Anywhere option is not displa...

Страница 18: ...sensor is not detected by Mosa2 the issue might come from the short range wireless connection of the computer 1 Close Mosa2 2 Click the short range wireless symbol in the top right corner of the menu...

Страница 19: ...you can see if fish are missing the trawl and passing above the headline This way you can correct the trawl position Fewer pings are sent because they are distributed between the 2 directions As a res...

Страница 20: ...there is a green check mark Procedure Click the tab Trawl Explorer Uplink Procedure From TE Uplink Frequency enter a frequency for the signal toward the vessel Important This parameter must be the sa...

Страница 21: ...change to 20 m when the bottom is closer 20 m Make sure you only use Down 1 sounding mode Enter the height of the trawl opening It must be lower than 20 m This is to make sure the sensor will search...

Страница 22: ...they do not transmit at the same time Important Frequency needs to be between 120 210 kHz Important Ping frequency is an important setting for the calibration of the sensor If you change ping frequenc...

Страница 23: ...nal is too much attenuated echoes target strength received from a target might not be as strong as they should be TVG is here to compensate this effect It uses a lower gain level when signals travel t...

Страница 24: ...t Mode and enter the password copernic 2 Click the tab Trawl Explorer 3 From Option True Mode select a sequence from True Mode Option Select Config1 default this is the more appropriate sequence for a...

Страница 25: ...Trawl Explorer V5 Sensor Configuration 24...

Страница 26: ...ed to Mosa2 About this task It is recommended to measure the noise floor in water Important Configure the noise floor before calibrating the sensor Procedure 1 From Mosa2 click Menu Expert Mode and en...

Страница 27: ...orientation of the transducer and end cap of the sensor to correctly receive pitch and roll data Changing the Transducer Orientation Before you begin For this task you need the following tools Allen k...

Страница 28: ...the retainers that are on the side of PCBA where all the cables are connected 2 Carefully disconnect the up B down A uplink C and uplink LED cable from the PCBA using needle nose pliers 2 Remove the...

Страница 29: ...o the uplink LED connector 2 Connect the up B down A and uplink C cables and add silicone glue 3 Reconnect the batteries Tip If you have a doubt the cable types are written on them and their location...

Страница 30: ...he picture 2 Ensure the slots for the screws in the end cap are facing those in the housing 3 Put back the end cap 1 Put back the end cap and screw with the 1 8 Allen key torque at 15 in lbs 2 N m 2 W...

Страница 31: ...r to check the A1 board orientation It can be checked and configured using Mosa2 About this task The transducer yellow part can be installed in two different positions with a different angle of 90 Whe...

Страница 32: ...iven target Before you begin Make sure you have correctly configured the sensor settings especially the noise floor level TVG mode ping length and ping frequency You can calibrate the sensor with or w...

Страница 33: ...n this example it is 39 dB target strength value of a ping pong ball of 39 mm diameter 6 Check that the pitch and roll of the sensor is between 5 and 5 to be sure that the beam direction of the sensor...

Страница 34: ...or is not correctly placed you may have an error message asking you to correct the pitch and or roll angle The sensor sends a series of 5 pings to calculate if the echo is consistent and constant A ne...

Страница 35: ...er tank Then restart the calibration procedure Troubleshooting If the sensor LED do not seem to work correctly right after the calibration procedure it is normal calibrating influences LED display Act...

Страница 36: ...in front of the Down or Up sounder The sensor is connected to Mosa2 About this task Ringing is an oscillation of the signal coming from the sensor transducer At shallow depth it can be confused with t...

Страница 37: ...low the same curve b The 4th point can be placed at the point where the yellow and gray lines go under the noise floor green line Note Data below the red line will not appear on the echogram and data...

Страница 38: ...ery Life 1000 32 Works for most conditions 60 75 hours Trawl Explorer 1800 58 Sensor is far from vessel e g more than 800 m depending on conditions high depth placed on codend High level of interferen...

Страница 39: ...Copy to clipboard then press Cmd V on a word processor like Pages to paste the contents 6 Marport offices only To add the test on the DealerWeb a Click Copy to clipboard b From the DealerWeb click Sen...

Страница 40: ...number is written on the end cap of the bottle or for some sensors on a plate on the housing The board ID is written on Mosa2 4 From the firmware section a In the first column select Narrow Band Traw...

Страница 41: ...range TVG Before you begin You have finished configuring the sensor The sensor is connected to Mosa2 About this task The configuration file is a list displaying the firmware version the board ID and...

Страница 42: ...right d From the part Configuration Readings right click in the text area next to Config Read and click Paste to add the text that you copied from Mosa2 e Click Save Config Read Exporting Sensor Conf...

Страница 43: ...the contents 5 Change the name of the XML file saved on your computer Note When you export the sensor settings the XML file always has the same name Changing its name will prevent you from overwriting...

Страница 44: ...NBTE V1 FIRM121 all all NBTE V2 FIRM126 03 01 23 or later all NBTE V3 FIRM128 04 02 28 or later 01 02 05 or later Adding the Sensor with a Configuration File You can add the sensor to the receiver wi...

Страница 45: ...node from the list on the left Nodes in green are already used Note Nodes are numbered locations for the sensor on the trawl gear Refer to the picture of the trawl to know the location of the node We...

Страница 46: ...add the sensor to the receiver with an xml configuration file exported from Mosa2 Procedure 1 From Scala Scala2 click Menu Expert Mode and enter the password copernic 2 Click menu again then Receivers...

Страница 47: ...lay 8 Click Add Sensor The sensor is added to the receiver and displayed on the left side of the screen The configuration page is displayed Configuring the Sensor Settings Important Make sure the sett...

Страница 48: ...tting at Synchro 1 4 Enter the same frequency as the one entered for the uplink frequency in Mosa2 Note The Trawl Explorer uses a 400 Hz bandwidth When configuring other sensors there needs to be a 20...

Страница 49: ...in Scala Scala2 For V3 version of the sensor you can also display target strength data that help you identify fish About this task Trawl Explorer measurements are displayed in the control panels under...

Страница 50: ...isplay 3 If using Down only mode and if the trawl opening configured for the sensor is under 20 meters the sounding range automatically changes to 20 meters if the distance to the bottom becomes lower...

Страница 51: ...e Trawl Explorer name and select Display Target Strength b Hover the mouse over the echogram The target strength of the element where you place your mouse is displayed next to the Trawl Explorer name...

Страница 52: ...Trawl Explorer V5 System Configuration and Display 6 Deactivate the Customize mode when you have finished customizing pages click Menu Customize again 51...

Страница 53: ...on the headrope in order to see the trawl opening and fish entering the trawl You can also install it on the trawl tunnel to see fish going toward the codend Headrope To install the sensor on the hea...

Страница 54: ...Buoys ensure that down looking transducer beam 5 is vertical for footrope 6 detection 5 The signal is oriented toward the vessel 7 We recommend you to use a netting bag placed on a suitable location...

Страница 55: ...r V5 Installation Tunnel To install the sensor on the trawl tunnel install it on a location corresponding to nodes 7 8 or 9 on the image below The installation procedure is the same as the one for the...

Страница 56: ...nterference 3 Pulses of the sensors PRP 4 Narrow band HDTE signals 5 Door sounder signals 6 Pause spectrum analyzer 7 Select hydrophone 8 Drag to adjust color scale 9 Reset the Max line 10 Marker disp...

Страница 57: ...date the list 5 From the top left corner of the screen click Start Spectrum The graph at the bottom of the page shows three levels of noise in dBV 1 RealTime white level of noise recorded in real time...

Страница 58: ...Reset Max to reset the dark blue line showing the maximum level of noise 10 To save data recorded by the spectrum in a txt file click Save FFT The FFT file lists for the entire bandwidth used by the h...

Страница 59: ...se floor 3 Max dark blue shows the latest highest level of noise recorded It is useful to see on which frequencies are the sensors The acceptable average level of noise depends on the conditions dista...

Страница 60: ...line showing the maximum level of noise 10 To check the maximum mean and real time measures of noise level at specific frequencies a Right click the FFT plot and click FFT Marker b Click and drag the...

Страница 61: ...scharges and charge the battery whenever possible at any battery level Lithium ion batteries do not have a charge memory so they do not need full discharge cycles Procedure 1 Before charging the senso...

Страница 62: ...when you switch off the charger or vessel s power supply If not the contact of the charger s pins with the shoulder bolts switches on the sensor that will run until discharged Results Once charged th...

Страница 63: ...ater before you charge or store it Regularly check that the sensor is clean If not Remove any marine life with a piece of wood or screwdriver Wash away mud or debris with warm water CAUTION Do not use...

Страница 64: ...that the sensor is clean See Cleaning the Sensor on page 62 for cleaning procedures After use Wash the sensor with fresh water Between uses When the sensor is not in use store in a dry area without hu...

Страница 65: ...m wrench About this task Only qualified Marport technicians can do this task Procedure 1 Remove the housing 1 Remove the shackle holding the metal rod 2 Remove the metal rod blocking the bottle 3 Remo...

Страница 66: ...n the side of the end cap 4 Put back the housing 1 Put the bottle inside the housing 2 Slide the metal rod to block the bottle 3 Put back the shackle on the rod Replacing the Batteries Before you begi...

Страница 67: ...e Mini Trawl Explorer with stubby bottle 1 Connect the new batteries to the battery adaptor board 2 Place the two new batteries one battery for a mini in the internal housing The wires must exit from...

Страница 68: ...Trawl Explorer V5 Servicing and Maintenance A End cap B Transducer 1 Main o ring 2 Backup o ring 67...

Страница 69: ...ys open the bottle to remove the shoulder bolts from the inside Procedure 1 Remove the end cap 1 Disconnect and remove the batteries to get access to the back of the end cap 2 Remove the screws mainta...

Страница 70: ...a flat head screwdriver while tightening the screws White wire water switch Black wire negative charge Red wire positive charge 5 Put back the end cap and reconnect the battery 1 Put back the end cap...

Страница 71: ...eplacement kit containing Install tool Metal ring only if pressure relief spring Pressure sensor Small O ring Adapter ring Screw Pressure relief spring if applicable You also need the following tools...

Страница 72: ...bles 1 red yellow green and 2 black 3 Remove the end cap Remove the screws maintaining the end cap with the 1 8 Allen key You have now access to the pressure sensor connections 4 Remove the old pressu...

Страница 73: ...ents in the same order as on the picture 1 if no pressure relief spring there is no metal ring 3 Insert the install tool into the hole in the end cap and tighten with the flat screwdriver to set the p...

Страница 74: ...B Transducer 1 Main o ring 2 Backup o ring 1 Replace the protective tape 2 Install 2 new main o rings and 2 backup o rings on the end cap and transducer as illustrated cross section Inspect and fully...

Страница 75: ...he tab General click Depth coefficients 9 Click Browse and select the xml file you downloaded Click Apply The pressure coefficients are updated Replacing the Temperature Sensor Before you begin For th...

Страница 76: ...the back of the end cap 2 Disconnect the pressure and temperature connector from the PCBA and remove the temperature sensor cables 2 black and 2 white 3 Remove the end cap Remove the screws maintaini...

Страница 77: ...ure screw thread then tighten back into place the temperature sensor with the wrench torque at 60 in lbs 7 N m 5 Connect the white connector to the PCBA 6 Put back the end cap and reconnect components...

Страница 78: ...icians can do this task Procedure 1 Disconnect components 1 Up cable on Down PCBA connector 2 Uplink 3 Uplink LED 1 Using a 1 5 mm Allen key remove the four screws holding the retainers that are on th...

Страница 79: ...cle on the transducer must be on the same side as the slot for the PCBA For V1 versions the transducer is turned 90 to the right See Changing the Transducer and End Cap Orientation for more details 4...

Страница 80: ...kup o ring 1 Replace the protective tape 2 Install 2 new main o rings and 2 backup o rings on the end cap and transducer as illustrated cross section Inspect and fully clean the o ring grooves 3 Check...

Страница 81: ...t corner of the Security Privacy dialog box click the lock icon and enter your password if applicable 3 At Allow apps downloaded from select Anywhere 4 If the computer is under macOS Sierra Anywhere o...

Страница 82: ...reasons the terminal window will not display anything when you type the password The terminal window displays Process completed when the script is completed Mosa2 is uninstalled from your computer an...

Страница 83: ...ram displayed in Scala Scala2 is completely blue There is no yellow line moving on top of the echogram which means that no sonar data is received Sounder frequency may be outside the correct frequency...

Страница 84: ...details FRANCE Marport France SAS 8 rue Maurice Le L on 56100 Lorient France supportfrance marport com ICELAND Marport EHF Fossaleyni 16 112 Reykjavik Iceland supporticeland marport com SPAIN Marport...

Страница 85: ...you configure boat codes make sure to respect the correct interval between frequencies see table above Codes BC CH Frequency FID Scanmar C 1 CH1 42833 45 C 1 CH2 41548 32 C 1 CH3 41852 35 C 1 CH4 4081...

Страница 86: ...CH2 41690 33 C 5 CH3 41285 30 C 5 CH4 41060 28 C 5 CH5 42900 46 C 5 CH6 43400 51 C 6 CH1 39062 3 C 6 CH2 39375 7 C 6 CH3 39688 11 C 6 CH4 40000 15 C 6 CH5 40312 19 C 6 CH6 40625 23 C 7 CH1 38906 1 C 7...

Страница 87: ...BTE sensors e g Speed Explorer Trawl Explorer Catch Explorer Door Sounder Example If the frequency of the sensor is 40kHz there should be no sensors between 39 8 40kHz and 40 40 6kHz Figure 4 HDTE nar...

Страница 88: ...allocations We recommend to allocate frequencies between 34 and 56 kHz for wideband hydrophones and between 41 kHz and 44 kHz for narrowband hydrophones Echosounders are usually placed around 38 kHz...

Страница 89: ...xample of a system with Spread sensors with positioning Catch sensors Trawl Explorer and Catch Explorer Example of a system for purse seining with a Seine Explorer and depth Seine sensors Bandwidth Ma...

Страница 90: ...Trawl Explorer V5 Appendix Appendix B Examples of Installations for a Target Strength Calibration Support for sensor Figure 6 Example of support Figure 7 Example of support 89...

Страница 91: ...Trawl Explorer V5 Appendix Ping pong ball Figure 8 Fishing line passes through the ball and is fixed with glue Figure 9 Example of installation with counterweights 90...

Страница 92: ...Trawl Explorer V5 Appendix 1 50 cm 2 1 m 3 Counterweight 91...

Страница 93: ...rength 48 Wrong 81 End cap orientation 26 Examples of applications 7 Exporting configuration txt file 40 XML file 41 F FFT Export 56 Firmware Error message 80 Update 38 Frequency 19 Frequency bandwidt...

Страница 94: ...es 65 Pressure sensor 70 Shoulder bolts 68 Temperature sensor 74 Transducer 76 Ringing cancellation 35 S Scala Adding sensor 45 Configuring sensor 45 Displaying in 48 Filters 46 Trawl gear location 45...

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