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idronaut Ocean Seven 303Plus Operator's Manual

Ctd multiparameter probe
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OCEAN SEVEN 303Plus CTD
MULTIPARAMETER PROBE

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Summary of Contents for idronaut Ocean Seven 303Plus

  • Page 1 OCEAN SEVEN 303Plus CTD MULTIPARAMETER PROBE...
  • Page 2 This document may contain technical inaccuracies or typographical errors. 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 The pH sensor cap should be filled with the pH7 Buffer Solution (or simply with clean water). The reference sensor cap should be filled with the Idronaut Reference Sensor Storage Solution (or even with KCl saturated solution).
  • Page 4 LIFETIME AND HOW TO REPLACE THE IDRONAUT SENSORS The Idronaut sensors are all pressure compensated and, in particular, the physical sensors (pressure, temperature and conductivity) can last many years, if properly used. They are high-quality sensors, as they are well known by oceanographers to measure salinity with great accuracy.

  • Page 5: Table Of Contents

    THE SENSORS ..........................10 1.10.1 Pressure transducer ..........................10 1.10.2 Temperature sensor ..........................10 1.10.3 The Idronaut seven-ring conductivity sensor ..................11 1.10.4 The Oxygen Sensor ..........................12 1.10.5 pH and Reference sensors ........................ 14 1.10.6 The redox sensor ..........................15 INSTALLATION AND START-UP .......................
  • Page 6 Final checkout with the shipboard sea cable ..................47 FSK - TELEMETRY FINE TUNING ....................48 APPENDIX A – HIGHLY PRECISE PRESSURE TRANSDUCER..............50 APPENDIX B - STANDARD SEA WATER TABLE……………………………………………………………..52 IDRONAUT – Brugherio (MB) OCEAN SEVEN 303Plus PROBE 02-2019...

  • Page 7: Introduction

    Those customers who plan to make use of the computer-oriented interface will find it helpful to look at the REDAS programme which can be supplied with the OCEAN SEVEN 303Plus PROBE. The programme allows the user to collect and save data in real-time.

  • Page 8: Fsk Telemetry - Portable Deck Unit

    SEVEN 303Plus probe through a built-in RS232-C interface and a dedicated terminal emulation programme, specifically developed for the Windows Pocket PC operating system. This programme interfaces the OCEAN SEVEN 303Plus probe and allows the operator to dialogue with the probes directly thus performing: sensor calibration, data acquisition, probe configuration, etc. All these operations are possible thanks to the OCEAN SEVEN 303Plus probe smartness included in the management firmware.
  • Page 9 SALINITY, SOUND SPEED, SIGMA-T (according to UNESCO 1978 formula); ▪ FRESH WATER CONDUCTIVITY corrected at 20°C and at 25°C; ▪ OXYGEN % SATURATION to OXYGEN ppm CONVERSION (according to UNESCO 1986 formula - Millero). IDRONAUT – Brugherio (MB) OCEAN SEVEN 303Plus PROBE 02-2019...

  • Page 10: Optional Sensors

    SECTION ONE - INTRODUCTION OPTIONAL SENSORS The OCEAN SEVEN 303Plus CTD can be optionally equipped with the Highly Precise (0.01%) Pressure Sensor and the ION selective electrodes: ammonia, nitrate and chloride. Parameter Range Accuracy Resolution Time Constant Pressure 0..4000 dbar 0.01% F.S.

  • Page 11: Density

    C; Sal is expressed in ppt. 1.9.3 Oxygen Calculation of the oxygen content in parts per million (ppm) is carried out in three steps. IDRONAUT – Brugherio (MB) OCEAN SEVEN 303Plus PROBE 02-2019...
  • Page 12 (r1 + r2) 1.9.3.2 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. Saturation % = Coeff. x O...

  • Page 13: Ph Calculation And Ph Correction In Relation To The Sample Temperature

    (ADC output) sensor offset 7.0 buffer value in counts (ADC output) read during the calibration procedure pH transfer coefficient = 58.168 / counts per pH unit IDRONAUT – Brugherio (MB) OCEAN SEVEN 303Plus PROBE 02-2019...

  • Page 14: Conductivity Compensated At 20 O C

    To obtain the sound speed, proceed to configure a new parameter in the acquirable parameter list (CNAP command from the configuration submenu) whose logical code is 16. Abbreviation is IDRONAUT – Brugherio (MB) OCEAN SEVEN 303Plus PROBE 02-2019...
  • Page 15 SOUNDV. Mux channel is 255. Memorize and show set to Yes. Number of digit is 9. Number of digit after the decimal point is 3. The data processing function is 2 (proprietary). IDRONAUT – Brugherio (MB) OCEAN SEVEN 303Plus PROBE 02-2019...

  • Page 16: Pressure To Depth Conversion

    A short presentation of the standard IDRONAUT OCEAN SEVEN 303Plus sensors follows. When the OCEAN SEVEN 303Plus probe is housed in the AISI 316L metallic housing, the special combined sensors: Temperature + Conductivity or Temperature + Dissolved Oxygen + Conductivity are installed. Apart from their mechanically shape, the performance of the single or combined sensor is below described.

  • Page 17: The Idronaut Seven-Ring Conductivity Sensor

    (this construction is for the 7000 dbar conductivity sensor version only). Both the Idronaut conductivity sensor and its associated electronics are designed to work both with plain and black platinised platinum electrodes. These electrodes have the advantage that, they can be used in both clean and dirty water without the fear of contamination.

  • Page 18: The Oxygen Sensor

    2 years if intensively used to perform continuous monitoring, up to 4 years if used weekly to perform daily profiling or monitoring. Calibration frequency: weekly. Maintenance: measuring membrane replacement, electrolyte replacement. IDRONAUT – Brugherio (MB) OCEAN SEVEN 303Plus PROBE 02-2019...
  • Page 19 1.10.4.2 Oxygen measurement priming The OCEAN SEVEN 303Plus probe 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 section 1.5.2).

  • Page 20: Ph And Reference Sensors

    The IDRONAUT reference sensor is in contact with the unknown solution by means of a small hole in the glass tip. This minimizes and stabilizes the junction potential between the inner gel electrolyte and the liquid to be measured.

  • Page 21: The Redox Sensor

    1 mV. Resolution: 0.1 mV. Max Pressure: 700 bar. Response time Sensor Body: titanium. Compensation: none. Life: unlimited. Calibration frequency: not availabe. Maintenance: cleaning of the glass/Pt surface with special sandpaper. IDRONAUT – Brugherio (MB) OCEAN SEVEN 303Plus PROBE 02-2019...
  • Page 22 SECTION ONE - INTRODUCTION SENSOR VIEW IDRONAUT – Brugherio (MB) OCEAN SEVEN 303Plus PROBE 02-2019...
  • Page 23 SECTION ONE - INTRODUCTION PROBE SENSOR VIEW Removable titanium sensor protection IDRONAUT – Brugherio (MB) OCEAN SEVEN 303Plus PROBE 02-2019...
  • Page 24 SECTION ONE - INTRODUCTION DISMOUNTING OF THE SENSOR PROTECTION TO ACCESS THE SENSORS AND REMOVE THE pH AND REFERENCE SENSOR CAPS IDRONAUT – Brugherio (MB) OCEAN SEVEN 303Plus PROBE 02-2019...

  • Page 25: Installation And Start-Up

    Start-up procedure. See below. HOW TO OPERATE THE PROBE The probe can be operated through the IDRONAUT TERMINAL emulation software per Windows (for brevity’s sake, hereafter referred to as “ITERM”). The “ITERM” software is described in a dedicated section of this Operator’s Manual.

  • Page 26: Probe Start-Up Non-Verbose Operating Mode

    A. Voltage can be read between pin “1” and pin “gnd” of connector marked with PROBE. Example: voltage necessary for 750 metres of IDRONAUT cable is: 12 + (0.115 x 750 x 0.05) = 16.3 V IDRONAUT –...

  • Page 27: The Probe Main Menu

    SECTION TWO – INSTALLATION AND START-UP THE PROBE MAIN MENU When the initialization process is completed, the OCEAN SEVEN 303Plus MAIN MENU is shown on the user’s screen: Main menu [0]ShutDown [1]Acquisition [2]Memory [3]Calibration [4]Service [5]Op.mode The Probe menu accepts the following keys in input, detailed as follows:...
  • Page 28 PTP communication protocol can be found in section 9. 2.5.1.3 Verbose and non-verbose special characters Some special characters are used by the OCEAN SEVEN 303Plus communication protocol and operator interface which are associated to special functions: CTRL-C Interrupts any data acquisition cycle in progress, attended or unattended.

  • Page 29: Commands

    The below screen shows the CALIBRATION MENU, as it is presented on the screen, whose access can be gained by activating key <3> from the MAIN MENU. OCEAN SEVEN 303-ID:905100{USR}[7.1_00-09/2005]13:51:52.22 23-09-2005 Calibration Calibration Idx - Sensor - Lock 255- Quit 001- Press IDRONAUT – Brugherio (MB) OCEAN SEVEN 303Plus PROBE 02-2019...

  • Page 30: Temperature Sensor Calibration

    OCEAN SEVEN 303Plus Probe administrator can lock the calibration on each sensor, avoiding un-skilled customers to perform sensors calibration. Lock of calibration can be done on single sensor.

  • Page 31: Conductivity Sensor Calibration

    Note Conductivity is calculated by means of a polynomial interpolation against a calibration curve. Cond mScm-1 = a + bx + cx2 Where: = Conductivity sensor reading in ADC counts IDRONAUT – Brugherio (MB) OCEAN SEVEN 303Plus PROBE 02-2019...

  • Page 32: Oxygen Sensor Calibration

    SECTION THREE – PROBE COMMANDS The OCEAN SEVEN 303Plus probe is capable to manage two different conductivity scales: one dedicated to the salt water environment and another one dedicated to the fresh water environment. The conductivity sensor is usually very stable and precise. A check of any drift with time or calibration can be performed by using a Standard Solution.

  • Page 33: Ph Sensor Calibration

    After the operator has entered the pH BUFFER value, the calibration procedure continues and the following message appears: Immerse pH and REF sensors Pull out the calibration buffer cup from the accessory kit and fill it with the pH buffer solution. IDRONAUT – Brugherio (MB) OCEAN SEVEN 303Plus PROBE 02-2019...

  • Page 34: Memory Management

    In fact, a wrong modification of one of these protected operating parameters could cause malfunction of the OCEAN SEVEN 303Plus. Details on how to gain access to the advanced set-up are discussed in the section dedicated to the “probe Rights”.
  • Page 35 SECTION THREE – PROBE COMMANDS A time-out to be spent at the probe start-up can be configured. An OCEAN SEVEN 303Plus probe equipped with chemical sensors, like: pH, DO , redox, etc. cannot get a warm-up fewer than 5 seconds. In case of long-term deployment, a time-out of 10/15 seconds should be foreseen.

  • Page 36: Advanced Set-Up

    “Administrative” rights. A detailed description of each parameter follows. As mentioned in the introduction, the OCEAN SEVEN 303Plus PROBE does not usually perform spot measurements but a certain number of sensor scans are carried out and the single values are averaged and stored in memory or shown on the user's screen.

  • Page 37: Real-Time Clock Set-Up

    1113.6 852.1 1347.1 1382.2 29.3 1113.5 852.1 1347.1 1386.5 In case an optical sensor has been installed, by means of the “O” command, it is possible to modify the measurement scale. IDRONAUT – Brugherio (MB) OCEAN SEVEN 303Plus PROBE 02-2019...

  • Page 38: Rights

    Answer 3.4.7 Firmware upgrading The OCEAN SEVEN 303Plus probe management firmware can be updated in field. To perform this procedure special tools: cable to connect to the probe internal circuits) and instructions are needed. Contact IDRONAUT to receive the relevant information and help.

  • Page 39: Probe Maintenance

    Most polarographic oxygen sensors take 5 to 10 minutes after they have been switched on to polarize and become stable. To overcome this limitation, the Idronaut OS303Plus has been fitted with a small internal rechargeable battery, to maintain polarization of the oxygen sensor continuously. However, if the probe is not used for several months, the polarizing battery may become completely discharged resulting in damage to the battery.

  • Page 40: Refilling Oxygen Sensor Cap With Electrolyte

    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 41 Cut away the excessive membrane, with fine scissors, far from the o-ring to avoid damaging the membrane. Finally, recap the protective plastic ring. IDRONAUT – Brugherio (MB) OCEAN SEVEN 303Plus PROBE 02-2019...

  • Page 42: Oxygen Sensor Cleaning

    REFERENCE SENSOR ❖ During all periods of inactivity, the reference sensor must be always hydrated with the IDRONAUT REFERENCE SENSOR STORAGE SOLUTION or, if not available, even with KCl saturated solution, using the plastic hydrating cap.

  • Page 43: Ph Sensor

    If the probe remains unused for periods longer than one day, always place the hydrating caps on both sensors. IDRONAUT – Brugherio (MB) OCEAN SEVEN 303Plus PROBE 02-2019...

  • Page 44: Conductivity Sensor

    SECTION FOUR – PROBE MAINTENANCE The pH sensor cap should be filled with the pH7 Buffer Solution (or simply with clean water). The reference sensor cap should be filled with the Idronaut Reference Sensor Storage Solution (or even with KCl saturated solution).

  • Page 45: Temperature Sensor

    Replacement of the pressure transducer could however become necessary if an extension of the operating range (depth) is required. In that case, the whole Probe must be returned to Idronaut to allow replacement, calibration and performance check of the sensor.

  • Page 46: Iterm - Windows Terminal Emulation Programme

    SECTION FIVE – ITERM, IDRONAUT TERMINAL EMULATION SOFTWARE 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 probes. ITERM does not need any special installation procedure and, if needed - due to its small dimensions - it can be used from a floppy disk too.
  • Page 47 This function must be performed before running the: Upgrade, Unattended and Upload cast functions. Probe->Upgrade This function is not available on the OCEAN SEVEN 303Plus probe. Do not use this function with the OCEAN SEVEN 303Plus. Probe->Set Time Sets up probe time and date.
  • Page 48 SECTION FIVE – ITERM, IDRONAUT TERMINAL EMULATION SOFTWARE Different unattended cycles can be configured by selecting the different dialog windows embedded in the “Remote Cast” window. Probe->StopCast This command concludes an “unattended” data acquisition cycle, which was previously started using the “Probe->Unattended Cast”...

  • Page 49: Toolbar

    SECTION FIVE – ITERM, IDRONAUT TERMINAL EMULATION SOFTWARE More than one cast can be selected by using the mouse and the CTRL or SHIFT keyboard key. “Target directory” must be configured before starting the upload. After the target directory has been configured and the desired cast has been selected from the cast list window, the upload button can be pressed.

  • Page 50: Troubleshooting

    PTP COMMUNICATION PROTOCOL The OCEAN SEVEN 303Plus probe is operated according to a series of rules and message formats commonly indicated with the term “communication protocol”. The OCEAN SEVEN 303Plus supports a very simple communication protocol, with function selections (incoming data) and sensor readings (outgoing data) assembled in ”messages”...

  • Page 51: Packet Description

    <LF> terminator has been seen yet. PACKET DESCRIPTION Details of the protocol are described in the “Data Transmission Protocol” Manual that can be requested to IDRONAUT Srl or uploaded from the Download area of the IDRONAUT web site “www.idronaut.it” IDRONAUT – Brugherio (MB)

  • Page 52: Fsk - Portable Deck Unit

    1 = Telemetry signal; GND = Telemetry ground. RS232C This connector allows the connection with a personal computer. IDRONAUT supplies a 3-m cable terminating with a DB/9 connector. The 7-pin female connector for the PC cable has the following active pins: pin 1 = RXDATA (PC);...

  • Page 53: Probe Checkout With The Portable Deck Unit

    Connect the Portable Deck Unit “RS232C” connector to a PC serial port by means of the IDRONAUT cable. Check that the “BATTERY MONITOR” green LED is ON or connect the external battery charger.

  • Page 54: Fsk - Telemetry Fine Tuning

    Therefore, only the DECK UNIT telemetry must be tuned. The following step-by-step instructions describe how to act. 1. If not already done, run the ITERM Idronaut “Terminal emulation” software. 2. Connect the Deck unit to the PC communication port. 3. Switch the probe ON by means of the Deck unit switch.
  • Page 55 OCEAN SEVEN 305 probe which interfaces the Highly Precise Pressure Sensor. The OCEAN SEVEN 303Plus probe behavior and performance are the same as described in the manual with only one exception, which regards the kind of battery that can be used when the probe performs unattended (self-recording) data acquisition.

  • Page 56: Appendix A - Highly Precise Pressure Transducer

    Calculations and conversions are performed at least 400 times per second. CONFIGURATION Through the probe set-up, it is possible to configure the Highly Precise Sensor. OCEAN SEVEN 303 - IDRONAUT srl [7.1_00-09/2005] 10:22:31 10-09-2005 Name Code Mux Digits Press...
  • Page 57 57.01 15.50 43.40 22.25 50.20 29.00 57.27 15.75 43.65 22.50 50.46 29.25 57.54 16.00 43.89 22.75 50.72 29.50 57.80 16.25 44.14 23.00 50.98 29.75 58.07 16.50 44.39 23.25 51.24 30.00 58.34 IDRONAUT – Brugherio (MB) OCEAN SEVEN 303Plus PROBE 02-2019...

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