IXSEA OCEANO 2500 S-Universal User manual

USER MANUAL
OCEANO 2500 S-Universal
ACOUSTIC
RELEASE

MU_OCEANO2500S-Universal_UK
Issue 10
30•05•07 1
This document is the property of IXSEA and shall not be reproduced nor transmitted without written approval
TABLE OF CONTENTS
1. GENERAL INFORMATION...........................................................................................................................4
1.1 INTRODUCTION .................................................................................................................................................4
1.2 TECHNICAL SPECIFICATIONS .............................................................................................................................4
2. DESCRIPTION...............................................................................................................................................5
2.1 GENERAL PRESENTATION..................................................................................................................................5
2.2 MECHANICAL SPECIFICATIONS...........................................................................................................................5
2.2.1 Upper equipped partition................................................................................................................................5
2.2.2 Assembled and equipped lower partition.......................................................................................................5
2.2.3 External assembly..........................................................................................................................................6
2.3 TRANSDUCER...................................................................................................................................................6
2.4 ACOUSTIC COMMANDS......................................................................................................................................6
3. POWER SUPPLY ..........................................................................................................................................9
4. AUTONOMY ..................................................................................................................................................9
5. ACCESSORIES...........................................................................................................................................10
6. OPERATION................................................................................................................................................11
6.1 PRE-DEPLOYMENT CHECKING.........................................................................................................................11
6.1.1 Preliminary ...................................................................................................................................................11
6.1.2 Sending a Command with the TT801 ..........................................................................................................11
6.1.3 Testing the Release Operation ....................................................................................................................12
6.1.4 Testing the Pinger Mode..............................................................................................................................13
6.1.5 Testing the Simple Ranging Operation........................................................................................................13
6.1.6 Testing the Telemetry mode ........................................................................................................................13
6.2 DEPLOYMENT.................................................................................................................................................14
6.2.1 Attaching the Load to the Acoustic Shackle Assembly................................................................................15
6.2.2 Arming the B2S Releasing System..............................................................................................................15
6.2.3 Checking the Acoustic Link..........................................................................................................................19
6.3 RECOVERY.....................................................................................................................................................20
6.4 AFTER RECOVERY..........................................................................................................................................21
7. MAINTENANCE...........................................................................................................................................22
7.1 OPENING THE ACOUSTIC RELEASE...................................................................................................................22
7.2 OPERATIONAL TESTS......................................................................................................................................27
7.3 PREVENTIVE MAINTENANCE.............................................................................................................................27
7.3.1 Transducer cap ............................................................................................................................................28
7.3.2 O-ring seals..................................................................................................................................................28
7.4 STORAGE.......................................................................................................................................................28
7.5 TROUBLESHOOTING ........................................................................................................................................28
8. CUSTOMER SUPPORT..............................................................................................................................28
9. CONTACT....................................................................................................................................................29

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This document is the property of IXSEA and shall not be reproduced nor transmitted without written approval
IXSEA provides a warranty covering this product against any defect in materials or manufacture for a period of
one (1) year from the date of shipment. In the event that such a defect becomes manifest during the stipulated
warranty period, IXSEA undertakes, at its sole discretion, either to repair the defective product, bearing the cost
of all parts and labor, or to replace it with an identical product.
In order to avail itself of the present warranty, Customer must notify IXSEA of the defect before expiry of the
warranty period and take all steps necessary to enable IXSEA to take the required action. Customer shall be
responsible for the packaging and shipment of the defective product for delivery to the repair center notified by
IXSEA, the cost of such shipment being borne by Customer. IXSEA agrees to bear the cost of return shipment
of product to Customer, who undertakes to pay all taxes, dues and expenses arising from such shipment.
This warranty shall not be construed as covering defects, malfunctions or damage caused by improper use or
inadequate maintenance of the product. Under no circumstances shall IXSEA be obligated to provide repair or
replacement under this warranty in order a) to repair damage caused by work done by any person not
representing IXSEA for the installation, repair or maintenance of the product ; b) to repair damage caused by
improper use or connection to incompatible equipment, and specifically, the opening of the housing of the
equipment under warranty shall cause the warranty to be automatically cancelled ; c) to maintain any product
that has been modified or integrated into a larger configuration, if such modification or integration increases the
duration or difficulty of the maintenance of said product.
This warranty covers the product hereunder and is provided by IXSEA in place of all and any other warranty
whether explicit or implicit. IXSEA does not guarantee the suitability of the product under warranty for sale or
any specific use. IXSEA’s liability is limited to the repair or replacement of defective products, this being the
sole remedy open to Customer in the event the warranty becomes applicable. IXSEA cannot be held liable for
indirect, special, subsequent or consequential damage, irrespective of whether IXSEA has or has not received
prior notification of the risk of occurrence of such damage.

MU_OCEANO2500S-Universal_UK
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This document is the property of IXSEA and shall not be reproduced nor transmitted without written approval
1. GENERAL INFORMATION
1.1 INTRODUCTION
This manual must be carefully read and understood prior to using an OCEANO 2500 S-Universal Acoustic
Release (ref. AR861B2S).
The manufacturer shall in no case be held liable for any application or use that does not comply with the
stipulations in this manual.
1.2 TECHNICAL SPECIFICATIONS
•Pressure : 624 bar maxi
•Operating temperature : from - 5 °C to + 40 °C
•Storage temperature : from - 20 °C to +70 °C
•Material : Super Duplex stainless steel URANUS 52N (UNS32550)
with high mechanical strength and high sea corrosion resistance
•Length (without ring) : 829 mm
•External diameter : 130 mm
•Weight in air : 30 kg
•Weight in water : 22 kg
•Safe Working Load (SWL) : 2,500 kg
•Release Load (RL) : 2,500 kg
•Test Load (TL) : 5,000 kg
Marking:
Engraving: Serial number
Adhesive label:
-Equipment reference
-Serial number
-Telecommand codes
-SWL
-RL
"IXSEA" logo: Adhesive plastic label.
"Immersion" option:
Thick tube for version with integrity test at 750 bar.

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This document is the property of IXSEA and shall not be reproduced nor transmitted without written approval
2. DESCRIPTION
2.1 GENERAL PRESENTATION
The acoustic release model OCEANO 2500 S-Universal operates in the low frequency range (from 8 to 17.5
kHz).
It is mainly made of:
•An acoustic reception, check and transmission electronical assembly.
•An internal battery power supply.
•An acoustic interface made of a low frequency transducer in equal pressure integral with the body of
the acoustic release and fitted with a cage for mechanical protection.
•An UNS 32550 stainless steel type mechanical assembly with high mechanical strength and high
corrosion resistance for Deep Sea applications consisting of a tight housing comprising:
•A tight 624 bar cylindrical tube,
•An upper partition that supports the transducer, with protection cage,
•An internal structure that supports the electronic assembly,
•A lower partition with the release mechanism and a screw opening system.
The following options are available:
•Titanium body (model OCEANO 2500 Ti-Universal, ref. AR861B2T)
•A remote transducer, by separation of the built-in transducer from the acoustic release body
(model OCEANO 2500 S-Universal with Remote Transducer, ref. AR861B2S-HD).
The acoustic actuator may be inserted in a chassis to make a Heavy Duty Acoustic Release for applications
with loads superior to 5 T.
2.2 MECHANICAL SPECIFICATIONS
2.2.1 Upper equipped partition
The upper partition is fitted with a protection cage. A yoke is fitted at the end of this protection cage.
Transducer mechanical interface:
The transducer is fitted directly on the device's upper partition (integral version). The ceramic piezoelectric
sensor is covered by a neoprene hood.
This transducer (Transmitter and Receiver), oil-mounted under equal pressure, features:
•A metallic reflector
•A CE-000192 ceramic ring
•A neoprene hood
2.2.2 Assembled and equipped lower partition
The lower partition is integral with the internal structure that supports the electronic assembly.
It is fitted with a releasing system and a screw opening system.

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This document is the property of IXSEA and shall not be reproduced nor transmitted without written approval
2.2.3 External assembly
All standard mechanical sub-assemblies (tube, end plates, cage, yoke, hook) are made from URANUS 52N
Super Duplex stainless steel.
2.3 TRANSDUCER
The acoustic release model OCEANO 2500 S-Universal is fitted with a standard low frequency (8 to 20 kHz)
piezoelectric transducer with hemispherical directivity pattern.
The main acoustic features are as follows:
•Reception bandwidth : 8.5 to 16 kHz
•Transmission bandwidth : 7.5 to 18 kHz
•Directivity diagram : Hemispheric at ± 3 dB
•Response at reception (Sh) : -185 dB ± 5 dB ref. 1V/µPa
•Response at transmission (Sv) : 131.5 dB ± 5 dB ref. 1µPa/V at 1 m.
•Static Capacity : 14 ± 1.5 nF
2.4 ACOUSTIC COMMANDS
The equipment must not execute a command on any parasitic noise. That is why every command must be
preceded by a "ARM" command.
Each "ARM" command corresponds to a "Customer code" specific to each customer.
Command implementation principle:
Note: a new "ARM" code interpreted in this receiving window will reset the time-out T.
On receipt of its ARM code, the acoustic release transmits a CAF pulse received by the remote control unit on
the surface. The elapsed time (T) between the transmission of the ARM code and the reception of CAF
acoustic reply allows the remote control unit to measure the RANGING (D) between the surface and the
acoustic release: D = c ×T / 2 (c = 1500 m/s).
Acoustic release deaf for
a set time (4 s. by
default)
Command
activation
"Customer
code" reception
Window opened for a fixed time T
(20 s by default), during which
reception of a command will be
accepted.
Code reception
If the code is known
=> Command execution Code reception time-out
=> Rejection

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This document is the property of IXSEA and shall not be reproduced nor transmitted without written approval
The acoustic commands available under “ARM” command are:
•RELEASE
•RELEASE with PINGER
•PINGER ON
•PINGER OFF
•DIAGNOSTIC
On telecommand reception, the acoustic release transmits a CAF acknowledgement of reception (CAF:
Common Acknowledgement Frequency). The CAF is factory-selected to 8 kHz or 12 kHz as expected by the
user.
After a release operation, a second CAF is transmitted.
The DIAGNOSTIC function gives two information by the acoustic channel:
•Battery voltage
•Acoustic release verticality
On reception of a "Diagnostic" command, the acoustic release transmits two CAF separated by a delay ΔT.
Used in "Time" mode, the TT 301B telecommand unit receives and displays this delay expressed in ms. If the
acoustic release falls in a cone of verticality whose aperture is 45°, the delay is displayed as follows: 5195. If
the equipment is not in this cone of verticality the delay between the two CAF is increased by 10 seconds and it
is displayed as: 5.1.9.5.
In order to deduce the battery voltage (expressed in mV), simply carry out the following calculation:
V_batteries = (ΔT – 3000) ×4.1
E.g.: ΔT = 5195 ms ⇒V_batteries = 9V and the acoustic release is vertical
ΔT = 15195 ms ⇒V_batteries = 9V and the acoustic release is not vertical
Used in « Telemetry » mode, the TT801 remote control unit receives and displays these information.

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This document is the property of IXSEA and shall not be reproduced nor transmitted without written approval
Release option by acoustic telecommand
PFR = Pinger Frequency.
In the case of a release with Pinger, the operating duration is set at 3 minutes. Use the PINGER ON command
to transmit PFR for an unlimited duration. Only the PINGER OFF command allows these transmissions to be
stopped.
The following parameters are factory-selected and cannot be changed by the user :
•PFR = 8 kHz or 12 kHz (as expected by the user)
•Pinger rate = 5 seconds.
Motor
rotation
AR
transmission
20 ms
Standard
CAF
acknowledgment CAF execution
Standard release
AR reception
3 sec # 2 sec
Motor
rotation
AR
transmission
20 ms
Standard
CAF
acknowledgment CAF execution
Release with Pinger
AR reception
3 sec
Pinger
transmission
duration
Pinger
rate
# 2 sec
PFR PFR
3 sec