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idronaut Ocean Seven 304Plus Operator's Manual

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Summary of Contents for idronaut Ocean Seven 304Plus

  • Page 2 Idronaut S.r.l. waives responsibility of any labour, materials, or costs incurred by any person or party as a result of using this document. Idronaut S.r.l. shall not be liable for any damages (including, but not limited to, consequential, indirect or incidental, special damages, or loss of profits or data) even if they were foreseeable and Idronaut S.r.l.
  • Page 3 OCEAN SEVEN 304Plus CTD IMPORTANT REMARKS BATTERY REPLACEMENT/RECHARGING  To gain access to the internal batteries, loosen the closing screws on the CTD top cover with a proper screwdriver. Remove all water droplets around the top cover to prevent the penetration of moisture inside the housing.
  • Page 4 IDRONAUT. INTERFACING THE OCEAN SEVEN 304Plus The OCEAN SEVEN 304Plus CTD can be interfaced in different ways, depending on the type of action to be performed. The below solutions must be adopted to guarantee that the OCEAN SEVEN 304Plus CTD satisfies the stated performance.

  • Page 5: Table Of Contents

    THE SENSORS ............................. 9 1.14.1. The pressure sensor ............................. 9 1.14.2. The temperature sensor ..........................10 1.14.3. The conductivity sensor equipped with the “IDRONAUT seven-ring cell” ........10 1.15. ELECTRONIC SPECIFICATIONS ......................11 1.16. PHYSICAL CHARACTERISTICS ......................11 INSTALLATION AND START-UP ......................15 2.1.
  • Page 6 Probe autonomy ............................40 ITERM – WINDOWS TERMINAL EMULATION PROGRAMME ............. 41 5.1. DISTRIBUTED FILES..........................41 5.2. INSTALLATION ............................41 5.3. PROGRAMME MENUS AND FUNCTIONS ..................41 5.4. TOOLBAR ..............................44 IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...
  • Page 7 Warranty The OCEAN SEVEN 304Plus CTD is covered by a one-year limited warranty that extends to all parts and labour and covers any malfunction that is due to poor workmanship or due to errors in the manufacturing process. The warranty does not cover shortcomings that are due to the design, nor does it cover any form of consequential damage because of errors in the measurements.
  • Page 8 IDRONAUT, the following steps must be taken to insure the safety of our service personnel.

  • Page 9: Probe Description

    1.2. REAL TIME COMMUNICATION The OCEAN SEVEN 304Plus CTD communicates with a computer via a standard RS232C interface. Real-time data can be acquired by means of the REDAS-5, µREDAS or ITERM Windows IDRONAUT software. The optional RS485 interface overcomes the limitation of the RS232C cable maximum length (200 m) and allows the CTD to transmit data through distances up to 1000 m.

  • Page 10: Laboratory Standard Rs232C Interface

    CTD. RS232 cable, up to 200m long, can be prepared upon request. Two different connectors, cable combinations are possible depending on the type of the CTD housing. The below pictures and wiring diagrams show both standard laboratory cables. IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...

  • Page 11: Optional Usb Communication Cable

    “RS232C” interface. Note When the USB cable is used to communicate with the OCEAN SEVEN 304Plus, the internal battery status is updated only by powering ON the CTD without the cable connected. Therefore, to update the battery status after the recharging, switch ON the CTD without the USB laboratory cable connected.

  • Page 12: Internal Battery Pack

    CTD to prevent the internal batteries from damaging the CTD due to battery acid leakage. This is why the OCEAN SEVEN 304Plus CTD is shipped without batteries installed. The status of the internal battery pack can be derived from the battery diagnostic reading on the CTD start-up message.

  • Page 13: Ctd Power On/Off Switch

    1.8. CTD POWER ON/OFF SWITCH The OCEAN SEVEN 304Plus CTD is equipped with a rotary magnetic switch which acts as an ON/OFF switch. This switch allows the operator to easily deploy a pre-configured CTD which, when it is on the sampling site, will start to acquire data according to the pre-configured cycle.

  • Page 14: Probe Access Rights

    Service access to allow the operator to carry out advanced set-up and advanced diagnostic functions. Administrative access to allow full control of the OCEAN SEVEN 304Plus. This access is reserved to IDRONAUT technicians or to trained operators. Upon request and under IDRONAUT supervision, administrative access can be granted to the operator to carry out dedicated functions or configurations.

  • Page 15: Menu Header Structure

    Like most up-to-date high technology products, the OS304Plus CTD is equipped with "FLASH" memories. A special function of the management firmware allows the user to upgrade the firmware to the last release flawlessly and without opening the CTD. Please contact IDRONAUT to obtain the relevant information and dedicated instructions.

  • Page 16: Menu & Submenu Structure

    20 o C = cond x K Where: cond = conductivity sensor output a = 1.721183 c = 0.0011484224 temp = temperature sensor output b = 0.05413696 d = 0.00001226563 IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...

  • Page 17: Sensor Specification

    (*) By reducing the range to 0..70 mS/cm, the resolution becomes 0.0002 mS/cm. 1.13. OPTIONAL SENSOR SPECIFICATIONS The OCEAN SEVEN 304Plus CTD can be optionally equipped with the IDRONAUT Highly Accurate Precise (0.01%) pressure transducer, the IDRONAUT OEM Turbidity Meter and the IDRONAUT dissolved oxygen sensor.

  • Page 18: The Temperature Sensor

    Maintenance: none. 1.14.3. The conductivity sensor equipped with the “IDRONAUT seven-ring cell” The conductivity sensor is a unique flow-through self-flushed cell with seven platinum ring electrodes. The central ring is excited with alternate current flowing to both the outermost rings. The two adjacent pairs of rings sense the relative drop in voltage due to the electrical conductivity of the measured water.

  • Page 19: Electronic Specifications

    Special MI version: 4000 dbar Dimensions Housing diameter 100 mm Total length(with hanging rod) 560 mm Weight In air (without battery) 4.6 Kg In water (without battery) 1.0 Kg Material Titanium/POM IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...
  • Page 20 SECTION ONE – SYSTEM DESCRIPTION OCEAN SEVEN 304Plus MI - 4000 dbar - COMPOSITE TITANIUM/POM HOUSING IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...
  • Page 21 SECTION ONE – SYSTEM DESCRIPTION OCEAN SEVEN 304Plus - 1000 dbar AISI316/POM HOUSING Note A Titanium gr 2 housing is also available, rated to 7000 dbar, whose diameter is 48 mm. IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...
  • Page 22 SECTION ONE – SYSTEM DESCRIPTION OCEAN SEVEN 304Plus - 2000 dbar Titanium/POM HOUSING IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...

  • Page 23: Installation And Start-Up

    Windows operating system to communicate with the Ocean Seven 304Plus through a simulated “communication port”. The simulated communication port is used by ITERM and other IDRONAUT programs to communicate with the CTD. 2.3.

  • Page 24: Ctd Start-Up Non-Verbose Operating Mode

    VT<LF> must be typed in order to return to the “verbose operating mode”. 2.5. THE MAIN MENU When the initialization process is completed, the OCEAN SEVEN 304Plus Main Menu is shown on the user’s screen: Main menu...

  • Page 25: Commands

    Data acquisition group of commands allows the operator to see data acquired and store it in the CTD memory by using different techniques. Data acquisition commands are accessed through the “Data Acquisition” sub-menu: OCEAN SEVEN 304Plus - ID:304-0010101 {ADM}[9.0_00-02/2012] 14:35:25.24 11-07-2012 Acquire [0]MainMenu...

  • Page 26: Timed Profile

    A profile is considered completed when more than 5 measurements (i.e. 5 pressure intervals) are stored. The following message shows the CTD set-up and the “Linear” acquisition cycle. OCEAN SEVEN 304Plus - ID:304-0010101 {USR}[9.0_00-02/2012] 15:19:28.93 11-07-2012 Pressure acquisitions Pressure acquisition step [dbar]:0.100000 <...

  • Page 27: Continuous Sampling

    OS304Plus Shutdown The timed profile parameters are described in section 4.0. Here is an example of messages sent by the CTD once it carries out a time cycle. OCEAN SEVEN 304Plus - ID:304-0010101 {USR}[9.0_00-02/2012] 15:37:37.01 11-07-2012 Work.Mem:Cnf[oK].Calb[oK].Stat[oK]..WakeUp[9F] Data memory...[1 GByte] WarmUp- Battery..3.60 VDC..CTD..Ok Analogue:.Ok...

  • Page 28: Conditional Sampling

    SECTION THREE – COMMANDS The continuous cycle configuration parameters are described in section 4.0. OCEAN SEVEN 304Plus - ID:304-0010101 {USR}[9.0_00-02/2012] 16:15:59.01 11-07-2012 Work.Mem:Cnf[oK].Calb[oK].Stat[oK].WakeUp[9F] Data memory...[1 GByte] WarmUp- Battery..3.59 VDC..CTD..Ok Analogue:.Ok OperatingMode...Continuous OpenLOG(4)..oK Acquisition: <^C>Stop Press Temp Cond Sal 0.24 26.2479 1.3653 1.2340 16:16:02.75M 0.24 26.2479 1.3653 1.2340 16:16:03.04M...

  • Page 29: Burst Sampling

    OFF and ON by itself between bursts. Burst sampling is somehow complementary to “time” acquisitions. An example of a burst sampling cycle configuration follows: OCEAN SEVEN 304Plus - ID:304-0010101 {USR}[9.0_00-02/2012] 16:43:44.77 11-07-2012 Burst measurements Whole number of burst:5 <...

  • Page 30: Calibration

    CTD sensor, we strongly suggest uploading data from the CTD memory.  IDRONAUT suggests a complete check and CTD sensor re-calibration once per year. 3.3.1. Pressure sensor calibration To avoid that a minimum drift occurs in the pressure sensor, it is preferable to immerse the CTD in water, up to about 10 cm from the CTD housing and wait a few seconds before starting the calibration.

  • Page 31: Temperature Sensor Calibration

    Cond mScm -1 = a + bx + cx 2 Where: X = Conductivity sensor reading in ADC counts Message from CTD Conductivity Enter coeff.. x=a+bx+cx2 a = 0.0000987 b = 0.0011187 c = 1.659832e-13 IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...

  • Page 32: Memory Management

    3.4.1. Memory priming The non-volatile data memory installed in the OCEAN SEVEN 304Plus CTD allows the storing of up to about 60,000,000 data sets, each one being composed of the reading of: Conductivity, Temperature and Pressure sensors plus the acquisition date and time. Data sets are automatically associated with the header “cast”...

  • Page 33: Show Stored Data

    A single cast can be “marked” as deleted using this command. Deleted cast will not be uploaded from the PC using the IDRONAUT REDAS-5 and ITERM software. The cast header and the associated data is not effectively deleted. A deleted cast can be undeleted, if needed, using the same command.

  • Page 34: Set-Up

    Details about these parameters are out of the scope of this Operator’s Manual. The improper modification of these parameters could cause malfunction of the CTD. Contact IDRONAUT to obtain detailed information. Now the CTD shows the list of acquirable sensors and associated derived parameters. This list is used by the CTD to acquire, store and show real-time data.
  • Page 35 = Derived parameter does not belong to a single sensor. Mux channel 254/3 = Special CTD preamplifier. The present firmware release includes the following processed/derived parameters: SALINITY, SOUND SPEED, DENSITY, CONDUCTIVITY@ 20°C, CONDUCTIVITY@ 25°C and TOTAL IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...

  • Page 36: Real-Time Clock Set-Up

    Description of the firmware news. Os304Plus_xxxx.txt OS304Plus firmware upgrading file (xxxx indicates the firmware release). ITERM.exe The IDRONAUT Terminal Emulation Programme. ITERM.rtf Help document of the Terminal Emulation Programme. Copy the OS304Plus firmware upgrading file into the ITERM folder on the computer hard disk.
  • Page 37 SECTION THREE – COMMANDS Windows Personal Computer Preparation The firmware is shipped together with the ITERM (IDRONAUT Terminal Emulation Programme). The installation of ITERM is simple and does not require running any set-up. Proceed as follows:  Copy the OS304Plus firmware upgrading package to a dedicated folder on the computer hard disk.
  • Page 38  During the firmware upgrading, the Xon/Xoff RS232C protocol is used by the CTD to communicate with the ITERM programme. Therefore, before proceeding, the Xon/Xoff must be enabled in the ITERM programme by accessing the serial port set-up and enabling the “Software transmit” and “Software receive”. IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...
  • Page 39 The ITERM programme will automatically start to transfer the OceanSeven304Plus_xxx.txt file contents to the OS304Plus CTD, row by row. In the meantime, a row is sent to the OCEAN SEVEN 304Plus a “:” character is shown repeatedly on the ITERM window. This character is transmitted by the OCEAN SEVEN IDRONAUT –...

  • Page 40: Diagnostics

     The firmware upgrading procedure should take about 10 minutes at the maximum. In case the firmware upgrading procedure is not well performed and after switching on/off the CTD, the main menu does not appear, nor is the above message in point (2) shown, contact Idronaut to receive the further instructions.

  • Page 41: Self Recording

     Type the <CTRL-C> key until the Main menu appear.  The unattended linear profile is ended and the CTD is working in the default verbose mode, waiting for the operator’s commands. IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...

  • Page 42: Unattended Acquisition In Function Of Time Increments

    When the CTD returns to the surface, you can switch it OFF by rotating back to OFF position the magnetic switch. The timed data acquisition cycle is temporarily suspended. IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...

  • Page 43: Ending The Unattended Data Acquisitions

    1) Each time a data acquisition is performed, a new data header is automatically generated. 2) The data acquisition ends whenever: i)The battery has run down. ii) The data memory is full. iii)The operator decides to stop it. IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...

  • Page 44: Ending The Unattended Data Acquisitions

    The minimum value is 125 ms and can be increased in step of 125 ms. Sampling Rate Set-up parameter 8 Hz 125 ms 6 Hz 166 ms 4 Hz 250 ms 2 Hz 500 ms 1 Hz 1000 ms 0.1 Hz 10000 ms IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...

  • Page 45: Field Operations

    Data sets per single burst: 10 < 10 Number of data sets for single measurement cycle or “burst”. Time between consecutive bursts: 00:01:00[hh:mm:ss]< Time interval between consecutive burst cycles. The minimum interval time is 10 s. IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...

  • Page 46: Field Operations

     Type the <CTRL-C> key until the Main Menu appears.  The unattended burst sampling cycle is ended and the CTD is working in the standard mode, waiting for the operator’s commands. IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...

  • Page 47: Uploading The Data Stored In The Probe Memory

    UPLOADING THE DATA STORED IN THE PROBE MEMORY At the end of any unattended acquisition, data stored in the CTD memory can be retrieved. The following instructions explain how to do that by using the IDRONAUT Windows Terminal and REDAS-5 programs. 4.6.1. WINDOWS “ITERM”...

  • Page 48: Probe Autonomy

    SECTION FOUR – SELF RECORDING 4.7.5. Probe autonomy A programme distributed with the ITERM software allows the user to calculate memory and power autonomy. IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...

  • Page 49: Iterm - Windows Terminal Emulation Programme

    SECTION FIVE - ITERM – WINDOWS TERMINAL EMULATION PROGRAMME ITERM – WINDOWS TERMINAL EMULATION PROGRAMME The aim of the ITERM programme is to provide a simple and reliable tool that IDRONAUT customers can freely use to communicate with their products, like the OCEAN SEVEN 3xx CTDss. ITERM does not need any Windows installation procedure.
  • Page 50 Port->Set parameters This function allows the operator to set and define the communication port parameters. Default values for the OCEAN SEVEN 304Plus CTD are: 38k4bps, 8bit data, 1stop bit, No parity, hardware hand- checking (CTS/RTS, DTR/DSR) and software hand-checking (XON/XOFF).
  • Page 51 Invoking this function, once ITERM is capturing, the character stops capturing and returns to the standard operations. Help->Contents It shows this help file. Help->About It shows notice about the ITERM programme release. IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...

  • Page 52: Toolbar

    CTD concerning the operations of CTD detection and CTD upgrading. In case of trouble, please send us the above files together with a short description of the problem. 5.6.1. Tools Together with ITERM, IDRONAUT distributes the following utility programs under the “tools” folder of ITERM: Swpc Sea water properties calculator.

  • Page 53: Oceansevencalibration

    SECTION FIVE - ITERM – WINDOWS TERMINAL EMULATION PROGRAMME 5.6.2. OceanSevenCalibration This programme, distributed with ITERM, allows the operator to properly acquire and store data in a text file during the OS304Plus verification in a calibration laboratory. IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...

  • Page 54: Internal Batteries

    SECTION SIX - BATTERIES INTERNAL BATTERIES The OCEAN SEVEN 304Plus CTD housing has in its upper part enough space to accommodate an internal battery pack. The OS304Plus is powered by a single 3.6V battery; different types of battery can be installed in the CTD housing.

  • Page 55: Pom Housing - Battery Replacement Procedure

     Gently push the wires and connectors to the side of the battery pack.  Gently reassemble the CTD top cover. Close the CTD with the two closing screws and gradually tighten them in sequence so as to close the cover uniformly. IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...

  • Page 56: Os304Plus-Mi - Titanium/Pom Housing - Battery Replacement Procedure

     Gently reassemble the CTD top cover. Close the CTD with the three closing hexagonal screws and gradually tighten them in sequence so as to close the cover uniformly. IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...

  • Page 57: Battery Endurance

    The internal real-time clock is kept by means of the CTD main battery pack. Therefore, when the battery pack is removed or it is fully flat, the RTC loses the date & time. At the successive start-up, the CTD date and time must be configured. IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...

  • Page 58: Ptp Communication Protocol

    SECTION SEVEN – PTP COMMUNICATION PROTOCOL PTP COMMUNICATION PROTOCOL The OCEAN SEVEN 304Plus CTD is operated according to a series of rules and message formats commonly indicated with the term ”communication protocol”. The OCEAN SEVEN 304Plus supports a very simple communication protocol, with function selections (incoming data) and sensor readings (outgoing data) assembled in ”messages”...

  • Page 59: Appendix A - Dissolved Oxygen Sensor

    APPENDIX A – DISSOLVED OXYGEN SENSOR INTRODUCTION The OCEAN SEVEN 304Plus CTD interfaces an IDRONAUT Dissolved Oxygen sensor through dedicated interface and software. This appendix contains all the information needed to operate the CTD in the laboratory and in the field with the Dissolved Oxygen sensor. It should be mentioned that,...
  • Page 60 A.3.1 Oxygen measurement priming The OCEAN SEVEN 304Plus CTD allows the operator to obtain the oxygen data either expressed in ppm or % Saturation. The formula which connects these two functions is given as by: ppm = Saturation x Solubility / 100 The relevant formulae for the computation of saturation and solubility can be found in the below section.
  • Page 61 Solubility (mg/l)= cnv x exp (r1 + r2) A.4.2 Calculation of % saturation The following proprietary coefficients are required for the calculation of % saturation to compensate the IDRONAUT membrane permeability to oxygen due to the temperature and pressure variation respectively. C 1 = - 0.029 C 2 = 0.000115...
  • Page 62 For this reason, the calibration is usually carried out in air. A.6.1 Oxygen sensor calibration in air After the”Oxygen Sensor” has been selected, typing its index code at the sensor selection prompt, the CTD displays: IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...
  • Page 63 3)If both of the above coefficients 1) and 2) are simultaneously requested, then the two relevant correction coefficients must be multiplied together to obtain the correction coefficient to be entered. 4)To expand the scale of the oxygen sensor readings. IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...
  • Page 64  It is recommended that only the IDRONAUT electrolyte be used, since its composition and pH guarantee the best performance and minimize the formation and growing of silver chloride on the anode.
  • Page 65 A.7.5 Oxygen sensor cleaning During the calibration procedure, the oxygen sensor current is shown: Checking oxygen sensor: Current: XXX nA. % of last calibration. XXX.X% The acceptable current is 30-90 nA. IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...
  • Page 66 Should the inconvenience persist, replace the membrane cap and/or the electrolyte. Due to the high quality construction of this oxygen sensor, which reduces to insignificant the background current, no electronic zero calibration is necessary and possible. IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...

  • Page 67: Appendix B - Conductivity With Integrated Uv-Led Antifouling

    The following parameters can be configured by means of the “Modify” command by selecting the CONDUCTIVITY sensor from the above list: Sensor code[0..24,255=NU]< 2 Sensor mux.[0..3,255=NU]< 1 Sensor precision [0..6]< 3 UV disinfection time [0.255]< 5 IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...
  • Page 68 2 seconds spent during the wake-up and shutdown functions, it is possible to calculate the following battery endurance with a 3.6V “C” type, 8.4 Ah battery: Measurement interval Endurance in days 15’ 30’ 60’ 1615 IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...

  • Page 69: Appendix C - Highly Precise Pressure Transducer

    APPENDIX C – HIGHLY PRECISE PRESSURE TRANSDUCER INTRODUCTION The OCEAN SEVEN 304Plus CTD CTD can interface the Highly Precise Pressure Transducer through a dedicated hardware and software interface. The below section contains all the information needed to operate an OS304Plus CTD which interfaces the Highly Precise Pressure Transducer.
  • Page 70 Calibration is carried out as described in the Operator’s Manual for the standard pressure sensor. However, the following calibration coefficients must be configured: Coefficient (a) = 0.0 Coefficient (b) = 10.0 Coefficient (c) = 0.0 IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...

  • Page 71: Appendix D - Seapoint Turbidity Meter

    0.03 ...<750 ** 0.03…<4000 *** ** output is non-linear above 750 FTU/NTU *** output is non-linear above 1250 FTU/NTU Please contact Idronaut to get the correct range. Temperature Coefficient: < 0.05% / °C. Operating Temperature: 0°C to 65°C (32° F to 149° F).
  • Page 72 TURBIDITY METER- y=a+bx (a)=0.000000 (b)=0.000000 B. Automatic scale management enabled The STM sensor is calibrated by entering an offset and slope for each measuring range. introduction starts from the >750 FTU. IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...
  • Page 73 Wilde, R.F., and Gibs, Jacob, 1998, Turbidity, in Wilde, F.D., and Radtke, D.B., eds., 1998, Field measurements, in National field manual for the collection of water-quality data: U.S. Geological Survey Techniques of Water- Resources Investigations, book 9, chap. A6.7, 30 p. IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...

  • Page 74: Appendix E - "Bluetooth" Wireless Module

    Module. Afterwards, communication continues using the wireless module until the communication session drops or the OCEAN SEVEN 304Plus CTD is switched off. The only limitation is that the CTD cannot be used with both interfaces (wire and wireless) at the same time.

  • Page 75: Appendix F - Auv Version

    Select the sampling rate or/and data transmission rate. BLUEFIN data format The OS304Plus acquires and transmits in real time: Conductivity (mS/cm), Temperature (°C IPTS-68), Depth (dbar). OCEAN SEVEN 304Plus - ID:304-0513514 {IDR}[9.0_10-04/2014] 07:58:42.06 06-05-2014 Work.Mem:Cnf[oK].Calb[oK].Stat[oK] BlueTooth..[Not-installed] Data memory...[2.0 GByte] Analogue..CTD!.Ok.ADC..Ok Battery..3.05 VDC...

  • Page 76: Appendix G - Submersible Connectors And Cable Care

    This appendix describes the proper care of submersible connectors and cables installed in the IDRONAUT OCEAN SEVEN 3xx series CTDs. The text refers to the IE55-12-CCP and to the MCBH/MCIL one (detailed characteristics of these connectors can be found on www.impulse-...
  • Page 77  Elastomers can be seriously degraded if exposed to direct sunlight or high ozone levels for extended periods of time.  Grip main body of connector during mating and un-mating Do not pull on cable to disconnect.  Avoid sharp bends at cable entry to connector. IDRONAUT – Brugherio (MB) OCEAN SEVEN 304Plus CTD 12-2015...

  • Page 78: Appendix H - Ctd Maintenance

    The aim of this appendix is to make recommendations, based on our experience, on cleaning, care and storage of the IDRONAUT chemical and physical sensors installed in the OCEAN SEVEN 3xx CTDs. Most of the recommendations below reported are taken from the OCEAN SEVEN 3xx Operator’s Manuals.
  • Page 79 H.3.3 Conductivity Cell The IDRONAUT conductivity cell has the advantage that it can be used both in clean and unclean water without fear of contamination. When the conductivity cell is not in use, it is kept dry.

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