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Aanderaa 4330 Operating Manual

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OXYGEN OPTODE
4330, 4835, 4831
TD 269 OPERATING MANUAL
OXYGEN OPTODE 4330, 4831, 4835
June 2017
page 1 of 93

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  • Page 1 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 OXYGEN OPTODE 4330, 4835, 4831 page 1 of 93...

  • Page 2: June

    TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Edition February 2008 PRELIMINARY Edition October 2008 Edition February 2009 Including description of Optode 4835 Edition August 2013, Including general updates in text, list of scientific publications, description of...

  • Page 3: Table Of Contents

    5.7 Sensor Configuration ...................... 33 CHAPTER 6 Maintenance .......................... 35 6.1 Changing the Sensor Foil ....................37 6.1.1 Procedure for Oxygen Optode 4330 and 4831 ............38 6.1.2 Procedure for Oxygen Optode 4835 ................ 39 6.2 Function Test ........................40 ®...
  • Page 4 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Appendix 3 Electronic Design ........................50 Appendix 5 Mechanical Design of Optode 4835 ..................51 Appendix 6 Primer –Oxygen Calculations in the Sensor ................52 Appendix 7 Multipoint Calibration ....................... 56 Appendix 8 Illustrations ..........................

  • Page 5: Introduction

    Purpose and Scope This document is intended to give the reader knowledge of how to operate, calibrate and maintain the Aanderaa Oxygen Optodes 4330, 4835 and 4831. It also aims to give insight on how the Oxygen Optode works. Individually calibrated commercially available optical dissolved oxygen Optodes for ocean and fresh water applications were introduced by Aanderaa Data Instruments in 2002.

  • Page 6: Document Overview

    3 introduced in August 2012. The new firmware also allows an optional high accuracy multipoint calibration. The appendix also include illustrations of all available cables, Frequently Asked Questions, a list of scientific publications in which Aanderaa Optodes have played a central role and the PCN covering the updates following introduction of framework 3.

  • Page 7: Applicable Documents

    Assembly Drawing 4835 V-11294 Assembly Drawing 4831 V-8700 Sensor Cable 3855, Sensor to PC, RS-232, for 4330/4835, laboratory use V-10501 Sensor Cable 4865, Sensor to PC, RS-232, for 4330/4835, field use V-10331 Sensor Cable 4762, Sensor to free end, for 4330/4835...

  • Page 8: Chapter 1 Short Description And Specifications

    Apart from a high quality temperature channel which is almost always included for automatic compensation in all of Aanderaa’s series of smart sensors; Aanderaa produces other smart sensors to measure water Currents, Conductivity, Wave/Tide and Pressure. Features common to these sensors include: •...
  • Page 9 OXYGEN OPTODE 4330, 4831, 4835 June 2017 Sensing Foil Temperature sensor Screws (4) for attaching the Securing Plate Sensor Housing O-rings Sensor foot Figure 1-1 Illustration of the Oxygen Optode 4330. Figure 1-1A Oxygen Optode 4330 Pin Configuration page 9 of 93...
  • Page 10 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Sensing Foil Temperature sensor Screws (4) for attaching the Securing Plate Sensor Housing Wet-mate Connector Subconn MCBH8M Figure 1-2 Illustration of the Oxygen Optode 4831 Figure 1-2A Oxygen Optode 4831 Pin Configuration...

  • Page 11: Pin Configuration

    Figure 1-3A Oxygen Optode 4835 Pin Configuration 1.1 Pin Configuration The Oxygen Optode 4330, 4831 and 4835 pin configuration is given in Figure 1-1A, 1-2A and 1-3A above. A description of the receptacle notation is given in Table 1-1. page 11 of 93...

  • Page 12: User Accessible Sensor Properties

    (flash). One property can contain several data elements of equal type (Boolean, character, integer etc.). The different properties also have different access levels. Table 1-2 lists all user accessible properties for Oxygen Optode 4330, 4831 and 4835. page 12 of 93...
  • Page 13 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Table 1-2 FC = Factory Configuration, UM = User Maintenance, SC = System Configuration, DS = Deployment Setting. ENUM=Enumeration, INT =Integer, BOOL=Boolean(‘yes’/’no’) Property Type Product name Aanderaa Product name...
  • Page 14 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Linearization coefficients for calculating PhaseCoef Float compensated phase FoilID Sensing Foil Identifier String Foil coefficients, general curve fit function, set A FoilCoefA Float FoilCoefB Foil coefficients, general curve fit function, set B...

  • Page 15: Specifications

    ) Note! Baud rates lower than 9600 may limit the sampling frequency. ) Applicable to 4831 only 1.3 Specifications For product specifications refer Datasheet D378 for 4330/4330F, D385 for 4835 and D403 for 4831/4831F on our web site http://www.aaderaa.com or contact aanderaa.info@xyleminc.com...

  • Page 16: Chapter 2 Measurement Principles And Parameters

    June 2017 CHAPTER 2 Measurement Principles and Parameters The AADI Oxygen Optode 4330, 4831 and 4835 are based on the ability of selected substances to act as dynamic fluorescence quenchers. The fluorescent indicator is a special platinum porphyrin complex embedded in a gas permeable foil that is exposed to the surrounding water.

  • Page 17: Sensor Parameters

    TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 All the user configurable properties that can be changed for each individual sensor, i.e. calibration coefficients, are called sensor properties. The properties can be displayed and changed using the Smart Sensor Terminal protocol via an RS232 port, refer CHAPTER 5 for communication with the sensor using a terminal communication program.

  • Page 18: Depth Compensation Of Data

    An Excel spreadsheet containing the equations for post compensation of the measurements is available for download at the document download site at the Aanderaa Global Library, refer www.aanderaa.com. If the...
  • Page 19 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 At normal atmospheric pressure (1013 mbar) the measured O concentration should not be pressure compensated. As the sensor is submerged you must perform pressure compensation of 0.0032% per dbar or for every meter increase of the relative pressure.

  • Page 20: Chapter 3 Seaguard ® Applications

    3.1 Installation on SEAGUARD Platform ® The Oxygen Optode 4330 and 4835 can easily be installed on AADI SEAGUARD data loggers. Power should be turned off before connecting the sensor. We recommend that you install the Oxygen Optode in sensor position 3, 4 or 6, refer Figure 3-1. If mounted in position 6 use patch cable to connect the optode ®...
  • Page 21 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 ® Figure 3-1 Illustration of the SEAGUARD Top-end plate. Important! ® ® Refer SEAGUARD Quick Start, TN301 or the SEAGUARD Platform Operating Manual, TD262a, for an illustrated sensor installation guide.

  • Page 22: Redreference, Calibration Coefficients And Salinity Compensation

    TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Sensor Configuration After installing the sensor turn power on and open the System Configuration from the Menu button. Select the newly installed Oxygen Optode which should appear in the list of sensors, and tap Configure in the lower part of the window.
  • Page 23 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Select the Node Description property, press View/Edit the lower part of the window, and change the setting. Press Save to store the setting when completed. Node Description is a user entered text describing the...
  • Page 24 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 For each calibration property to be set, you must first View/Edit select the property then press and type the correct value. Press Save to store the settings. The foil coefficients must be updated when changing the sensing foil.

  • Page 25: Chapter 4 Sensor Configuration Using Real-Time Collector

    TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 CHAPTER 4 Sensor configuration using Real-Time Collector The sensors that are updated with Sensor Framework version 3 can be configured as stand-alone sensors using AADI Real-Time Collector. Open the sensor connection as described in TD268 AADI Real-Time collector operating manual.
  • Page 26 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Figure 4-3 Sensor system configuration Figure 4-4 Sensor user maintenance page 26 of 93...

  • Page 27: Chapter 5 Connection To Pc

    June 2017 CHAPTER 5 Connection to PC This chapter describes how to connect and communicate with the Oxygen Optode 4330, 4831 and 4835 using the RS232 protocol. Sensor configuration is described in chapter 5.7 Optional Sensor Cables: 3855 (1.5m) for laboratory use or Sensor Cable 4865 are used with 4330/4835 and cable 5335 with the 4831, refer Figure 5-1 for the correct cable to be used for connection to the PC in the office/lab.

  • Page 28: Passkey For Write Protection

    TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 *) Note! The options “Send line ends with line feeds” and “Echo line ends with line feeds” in the HyperTerminal ASCII setup must be selected. Note! If using Tera Terminal Pro, after setting up the com port according to settings above please select “Terminal”...

  • Page 29: Save And Reset

    TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Table 5-1 Access protection levels Output Passkey Description No Passkey needed for changing property The Passkey must be set to 1 prior to changing property The Passkey must be set to 1000 prior to changing property...

  • Page 30: Available Commands For The Oxygen Optodes

    TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 5.5 Available Commands for the Oxygen Optodes Available commands and properties for the Oxygen Optode are given in Table 5-2 and Table 1-2 respectively. Table 5-2 Main RS232 commands available for the Oxygen Optode.

  • Page 31: The Get Command

    TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 5.5.1 The Get Command command is used for reading the value/values of a property and for reading the latest value of a parameter. The command name followed by a...

  • Page 32: Formatting The Output String

    TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 5.5.3 Formatting the Output String The property called Enable Text controls the presentation of measured data. When the property is set to (Yes) the output string includes the descriptive parameter name. When the property is set to (No), output parameters are presented without descriptive parameter names;...

  • Page 33: Sensor Configuration

    20 mA adaptors, or enabling the build in analog output of the 4831 Note! As default the 4330 and 4835 sensors are set to AiCaP communication while 4831 is set to Smart Sensor Terminal (RS232). Please select the correct Output according to which type of logger/interface you plan to use.
  • Page 34 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Set the Enable AirSaturation, Enable Temperature, and Enable Rawdata (Yes) to include these parameters in the output string. Set the Enable Text (Yes) for the optode to output a detailed text string with the measurements, or (No) to output the measured values without the descriptive text.

  • Page 35: Chapter 6 Maintenance

    TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 CHAPTER 6 Maintenance The Oxygen Optode requires very little maintenance. When the membranes on traditional oxygen consuming sensors (based on electrochemical principles), often called Clark sensors, are fouled the water mixing in front of the sensor membrane becomes poorer, which influences the measurement directly.
  • Page 36 2%, change in the response of the Optode. For optimum accuracy the foils should be wetted for 48 hours prior to use. The protecting cap supplied with the 4330 and 4831 style Optodes can be used for keeping the foil both wet and shielded from ambient light.

  • Page 37: Changing The Sensor Foil

    6.1 Changing the Sensor Foil If the sensor foil gets damaged it can easily be changed. For the 4330 and the 4831 models it is possible to change between the standard foil and fast response foil. The Sensor Foil Kit 4733 for Optode 4330, 4831 and 4835 and Semnsor Foil Kit 5551 for Optode 5551 contains 1 standard foils while Sensor Foil Kit 4794 for Optode 4330 and 4831 contains 1 fast response foils.

  • Page 38: Procedure For Oxygen Optode 4330 And 4831

    TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 6.1.1 Procedure for Oxygen Optode 4330 and 4831 Procedure for changing the sensor foil using kit 4733 or 4794: • The sensor foil is changed by unscrewing the 4 torx screws in the securing plate, refer Figure 6-2.

  • Page 39: Procedure For Oxygen Optode 4835

    TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 6.1.2 Procedure for Oxygen Optode 4835 Procedure for changing the sensor foil using kit 5551: • The sensor foil is changed by unscrewing the 2 torx screws in the securing plate, refer Figure 6-4Remove the securing plate and the old foil.

  • Page 40: Function Test

    The measured temperature should also agree with the ambient temperature. ® 6.2.1 SEAGUARD Applications ® Leave the Oxygen Optode 4330/4835 mounted onto the SEAGUARD Platform. Power the instrument; refer TD262a and TD262b for operating instructions. Open Administrative Tools-> Sensor Monitor Sensor Monitor can be used as a direct reading of the sensor;...
  • Page 41 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 The next window shows sensor information like the Node Description, Product name and number, and Serial number, refer Figure 6-7. The number of sensor parameters and the processing time can be viewed in the window.

  • Page 42: Calibration Procedure Using A Terminal Program

    TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Each batch of sensing foils is delivered with calibration data describing the behaviour with respect to oxygen concentration and temperature. When changing the sensing foil the following 28 coefficients must...
  • Page 43 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Note! If using Tera Terminal Pro, after setting up the com port according to settings above please select “Terminal” in the “Set up” menu and click “Local echo” also select “CR+LF” for both “Receive” and “Transmit”...
  • Page 44 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Submerge the Optode in the zero solution. Make sure that the sensing foil is free from air bubbles. Wait until both the temperature and the phase measurements have stabilized.

  • Page 45: Appendix 1 Theory Of Operation

    TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Appendix 1 Theory of Operation The Oxygen Optode is based on a principle called dynamic luminescence quenching. This phenomenon is the ability of certain molecules to influence the fluorescence of other molecules.

  • Page 46: Luminescence Decay Time

    The coating gives optical isolation between the indicator layer and the surroundings. For faster response time foils also exist without the optical isolation layer, transparent foils, through which the blinking blue and red light can be seen. The transparent foils are only available for 4330 and 4831 optodes. Optical Isolation Layer...
  • Page 47 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 The relationship between the O concentration and the luminescence decay time can be described by the Stern-Volmer equation:4 τ   −   τ   where: τ...

  • Page 48: Appendix 2 The Optical Design

    TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Appendix 2 The Optical Design An illustration of the optical design is given in Figure A 4. The sensing foil is mounted outside the optical window and is exposed to the surrounding water. The foil is held in place by a screw fixed plastic plate.
  • Page 49 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Blue-Green LED Blue-Green LED Red LED Red LED Photo Diode Photo Diode Blue Filter Blue Filter Red Filter Red Filter Wavelength (nm) Wavelength (nm) Figure A 5 An example of Spectral Response...

  • Page 50: Appendix 3 Electronic Design

    Appendix 4 Mechanical Design of Optode 4330 and 4831 Figure 1-1 and Figure 1-2 and Figure 1-3 and A8 for illustration of the Oxygen Optode 4330. A cylindrical titanium housing shields the electronics from the surrounding water and high pressure (pressure resistance for standard sensor is 6000 m.

  • Page 51: Appendix 5 Mechanical Design Of Optode 4835

    Screws for securing foil 10-pin receptacle Screws for housing Figure A 7 Oxygen Optode 4330 components. Appendix 5 Mechanical Design of Optode 4835 Refer Figure 1-3 and Figure A 8 for illustration of the Oxygen Optode 4835. A cylindrical polymer housing shields the electronics from the surrounding water (pressure rated to 300 m).

  • Page 52: Appendix 6 Primer -Oxygen Calculations In The Sensor

    TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Electronics Housing Screws Securing plate Sensing foil Figure A 8 Oxygen Optode 4835 components. Appendix 6 Primer –Oxygen Calculations in the Sensor The Optode normally excites the foil with both blue and red light. Since the red light does not produce any fluorescence in the sensing foil the phase obtained in this measurement is used as a reference in the system.
  • Page 53 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 The temperature in °C is calculated from raw data (RawTemp) by use of a polynomial similar to the above with coefficients stored in the TempCoef property. Based on the calibrated phase (CalPhase) and temperature (Temperature) the partial pressure of O calculated by use of a two dimensional polynomial: ∆...
  • Page 54 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 S = Salinity (configurable property, default set to zero) = 2.00856 = -6.24097e-3 = 3.22400 = -6.93498e-3 = 3.99063 = -6.90358e-3 = 4.80299 = -4.29155e-3 = 9.78188e-1 = -3.11680e-7 = 1.71069...
  • Page 55 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Later it has been shown by Craig Neill (CSIRO) that this formula generally performs better with respect to interpolation between calibration points and extrapolation outside the calibration range. Based on this and recommendation from the Argo oxygen meeting in Brest 2011 the above formula has been implemented in the Optode firmware (serial no.

  • Page 56: Appendix 7 Multipoint Calibration

    Note that the multipoint calibration is only available for the 4330 and 4831 Optode and that in order to enable of use of the above formula the property called Enable SVUformula must be set to “yes” (requires firmware version 4.4.8 or higher).

  • Page 57: Appendix 8 Illustrations

    TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Appendix 8 Illustrations Figure no. Description Figure A 9 Drawing Cable 4865 Figure A 10 Drawing Cable 3855 Figure A 11 Drawing Cable 5335 Figure A 12 Drawing Cable 4762...
  • Page 58 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Figure A 9 Drawing Cable 4865. page 58 of 93...
  • Page 59 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 page 59 of 93...
  • Page 60 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Figure A 10 Drawing Cable 3855. Figure A 11 Drawing Cable 5335 page 60 of 93...
  • Page 61 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Figure A 12 Drawing Free end Cable 4762 page 61 of 93...
  • Page 62 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Figure A 13 Drawing Cable 4793 page 62 of 93...
  • Page 63 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Figure A 14 Drawing Cable 5335 page 63 of 93...
  • Page 64 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Figure A 15 Drawing Cable 5336 page 64 of 93...
  • Page 65 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Figure A 16 Drawing Cable 5280 page 65 of 93...

  • Page 66: Appendix 9 Frequently Asked Questions -Faq

    Tera Terminal (ref. Manual of these sensors for detailed instructions) 4. When data from the sensor is registered on an Aanderaa data-logger (e.g. on a RCM 9, a buoy etc.) the old Aanderaa specific SR10 format is used. These readings then need to be post-processed (converted to the desired engineering units) by multiplying with a constant.
  • Page 67 A: After calibration the sensors normally perform better than the given specifications. Aanderaa has a tradition to be conservative when giving sensor specifications so that these reflect the performance in the field not the best specifications you can obtain in the laboratory.
  • Page 68 Q: When calibrating, which substance should I use to remove the oxygen in the water? A: At Aanderaa we use Sodium sulphite for this purpose. Sodium sulphite rapidly removes the oxygen and as long as crystals of the compound can be seen the oxygen level in the water will stay at 0. Sodium sulphite also has the advantage of being inexpensive and the level of toxicity is low.
  • Page 69 0.1ºC. Care should be taken when using the sensor in on-line system applications (e.g. in a ferry box system). The internal temperature sensor is placed in the “foot” of the sensor (except for the 4330 and 4831 Optodes on which the temperature sensor has been moved close to the foil).
  • Page 70 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 If you would like to do spot measurements, where the sensor is out of the water most of the time, we recommend you to keep the sensor in a wet environment (such as a plastic bag with water) in-between measurements.
  • Page 71 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 The two latter parameters are easily compensated for by simple formulas which are common for all sensors. MR 4 Q: What chemical factors/elements will affect the sensor? A: There exists no cross sensitivity for carbon dioxide (CO...
  • Page 72 Note this is normally not necessary as our recording instruments include a separate temperature sensor. Newer optodes e.g. 4330, 4831 and 4835 do not have SR10 output. When connected to data loggers (using AiCaP/CAN and/or RS232 format) all data coming from the sensor can be presented and logged including: O concentration, O saturation, Temperature and Raw data.
  • Page 73 Exposure to direct sunlight will also excite/bleach the foil over time however this effect is minimal with the protection provided by the opaque/optical isolation layer on the standard responding foils. The situation is radically different for the transparent fast response foils (can be used on the 4330 and 4831 sensors) These foils bleach if exposed to sunlight. This will lead to lower readings.
  • Page 74 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 A: Operating 0 to 40°C; Transport -40°C to 70°C, for storage we recommend room temperature or lower. MR 16 Q: After calibration the maximum reading we can get in air at room temperature is 94.1 instead of 100. Do we need to replace the oxygen sensing foil? A: The sensing foil does not need to be replaced.
  • Page 75 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 What can the explanation be to this? A. One possible explanation is that you have trapped air inside your chambers and when you close the lid it dissolves and change concentration in the now sealed chamber.
  • Page 76 Q: Why is salinity compensation needed? A: As other oxygen sensors the Aanderaa Optodes are measuring the level of oxygen saturation (partial pressure) in the water and not the absolute concentrations. To get the absolute concentrations, the salinity has to be measured in parallel/known and compensated for. This can be done either internally by setting the salinity to a fixed value or externally by applying the formulas suggested by Garcia and Gordon (1992).
  • Page 77 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 for salinity and pressure changes, to calculate saturation levels and to convert between different oxygen units. MR 26 Q: What is influencing the O concentration in water? A: In the laboratory how much oxygen that can be dissolved in the water is dependent on the salinity and temperature of the water and on the air pressure in the room.
  • Page 78 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 MR 29 Q: I am going to have a deployment in ocean water with constant salinity (35 ppt). Is it possible to pre-set the internal setting in the sensor, to avoid post calibration? A: Yes, this can be done.
  • Page 79 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 After cleaning the sensor it should be rinsed well in clean tap water before storing or reuse. Do not use any organic solvents such as: Acetone, Chloroform and Toluene since these and others will damage the foil.
  • Page 80 < 25 s) is sufficient but when doing fast profiling (e.g. with a CTD or on a towed vehicle) the response time can be a limiting factor. The 4330 and 4831 Optodes can be fitted with faster responding transparent foils that have approximately a factor 4 faster response.
  • Page 81 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 more or less self-explanatory and provides utilities, graphic & tabular display for set-up, calibration, logging etc. These functions are easily accessed without deeper knowledge about the sensor. SSC 2 Q: Many new PC’s do not have a serial port.
  • Page 82 RCM9? A: No, there will not be any conflict. When the Optode is used with an Aanderaa data logger the power is only applied when the data-logger scans the connected sensors (Control Voltage is active).
  • Page 83 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 hydrodynamic effect of the tube will then force water towards the foil and assures a good circulation both when going up and down. The Optode of course has to be connected to the CTD with a cable.

  • Page 84: Appendix 10 List Of Scientific Papers

    TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Appendix 10 List of scientific papers Examples of scientific papers in which AADI optodes have been used and evaluated (Last updated in January 2012) Commercially available oxygen optodes for oceanographic application were introduced by AADI in 2002. The long-term stability (years) and reliability of these sensors have revolutionized oxygen measurements and several thousand are in use in applications ranging from streams to the deepest ocean trenches (11 000 m), from fish farms to waste water, from polar ice to hydrothermal vents.
  • Page 85 10. Körtzinger, A., J. Schimanski, U. Send, and D.W.R. Wallace (2004). The ocean takes a deep breath. Science, 306: 1337. 11. Martini M., B. Butman and M. Mickelson (2007) Long-Term Performance of Aanderaa Optodes and Sea-Bird SBE-43 Dissolved-Oxygen Sensors Bottom Mounted at 32 m in Massachusetts Bay. Journal of Atmospheric and Oceanic Technology, 24: 1924-1935.

  • Page 86: Appendix 11 Product Change Notification: Framework 3

    TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 14. Pakhomova S., P.O.J. Hall, A. Tengberg, A. Rozanov and A. Vershinin (2007) Fluxes of Iron and Manganese across the sediment-water interface under various redox conditions. Marine Chemistry, 107: 319-331 15.
  • Page 87 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Product Number Product Name From Serial No. 4050 Temperature Sensor 4060 Temperature Sensor 4017 Pressure Sensor 4117 Pressure Sensor 4319(A/B) Conductivity Sensor 4330(F/A) Oxygen Optode 1000 4420 ZPulse® Doppler Current Sensor 4520 ZPulse®...
  • Page 88 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Sensor Terminal protocol. Please refer to the specific Operating Manuals for further details and to Technical Description TD267a for updates in the AADI Real Time protocol. Specific Changes: 1. Input command line termination is changed from line feed (LF) with optional carriage return to line feed and mandatory carriage return (LF+CR).

  • Page 89: Appendix 12 Oxygen Dynamics In Water

    TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Appendix 12 Oxygen Dynamics in Water Seawater and Gases Refer Unisense AS for tabulated physical parameters of interest to those working with micro sensors in marine systems: http://www.unisense.com/Default.aspx?ID=1109 Tables...

  • Page 90: June

    TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 http://www.unisense.com/files/PDF/Diverse/Seawater%20&%20Gases%20table.pdf Copies of Unisense AS tables for solubility of oxygen in seawater are given in Figure A , Figure A , and Figure A . NOTE! Refer Unisens AS for more information about the tables.
  • Page 91 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Figure A 17 Copy of Data Table 6 by Niels Ramsing and Jens Gundersen: 100% Oxygen Solubility @ 1013 mbar pressure page 91 of 93...
  • Page 92 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Figure A 18 Copy of Data Table 7 by Niels Ramsing and Jens Gundersen: 100% Oxygen Solubility @1013 mbar pressure page 92 of 93...
  • Page 93 TD 269 OPERATING MANUAL OXYGEN OPTODE 4330, 4831, 4835 June 2017 Figure A 19 Copy of Data Table 8 by Niels Ramsing and Jens Gundersen: 100% Oxygen Solubility @1013 mbar pressure page 93 of 93...

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