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wtw Oxi 3310 Operating Manual

Dissolved oxygen (d.o.) meter
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Operating manual
Oxi 3310
Dissolved oxygen (D.O.) meter
For Sales & Service Contact
2650 E. 40th Ave. • Denver, CO 80205
Phone 303-320-4764 • Fax 303-322-7242
1-800-833-7958
www.geotechenv.com
ba75804e06
03/2012

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  • Page 1 Operating manual Oxi 3310 Dissolved oxygen (D.O.) meter For Sales & Service Contact 2650 E. 40th Ave. • Denver, CO 80205 Phone 303-320-4764 • Fax 303-322-7242 1-800-833-7958 www.geotechenv.com ba75804e06 03/2012...
  • Page 2 © Copyright Weilheim 2009, WTW GmbH Reproduction in whole - or even in part - is prohibited without the express written permission of WTW GmbH, Weilheim. Printed in Germany. ba75804e06 03/2012...

  • Page 3: Table Of Contents

    Contents Oxi 3310 - Contents Overview ........5 Keypad .
  • Page 4 Contents Oxi 3310 4.6.1 Options for data transmission ....42 4.6.2 Connecting a PC ......43 4.6.3...

  • Page 5: Overview

    The Oxi 3310 compact precision dissolved oxygen (D.O.) meter enables you to perform D.O. measurements quickly and reliably. The Oxi 3310 provides the maximum degree of operating comfort, reliability and measuring certainty for all applications. The proven OxiCal calibration procedure supports you in your work with the D.O.

  • Page 6: Keypad

    Overview Oxi 3310 Keypad ENTER Oxi 3310 In this operating manual, keys are indicated by brackets <..> . The key symbol (e.g. <ENTER>) generally indicates a short keystroke (under 2 sec) in this operating manual. A long keystroke (approx. 2 sec) is indicated by the underscore behind the key symbol (e.g.

  • Page 7: Display

    Oxi 3310 Overview <ENTER>: Opens the menu for measurement settings / confirms E N T E R entries <ENTER >: Opens the menu for system settings <AR> Freezes the measured value (HOLD function) Switches the AutoRead measurement on or off Display 7.92...

  • Page 8: Socket Field

    Overview Oxi 3310 Socket field Connectors: D.O. sensor USB B (device) interface Service interface Caution Only connect D.O. sensors to the meter that cannot return any voltages or currents that are not allowed (> SELV and > current circuit with current limiting).

  • Page 9: Safety

    Oxi 3310 Safety Safety This operating manual contains basic instructions that you must follow during the commissioning, operation and maintenance of the meter. Consequently, all responsible personnel must read this operating manual before working with the meter. The operating manual must always be available within the vicinity of the meter.

  • Page 10: Authorized Use

    Safety Oxi 3310 Authorized use The authorized use of the meter consists exclusively of the measurement of dissolved oxygen and temperature of liquid media in a field and laboratory environment. The technical specifications as given in chapter 7 T must ECHNICAL DATA be observed.
  • Page 11  Safety datasheets of the chemical manufacturers. Caution In addition to the safety instructions mentioned here, also follow the safety instructions of the sensors used. The operating manuals of the sensors are available on the supplied CD and on the Internet under www.WTW.com. ba75804e06 03/2012...
  • Page 12 Safety Oxi 3310 ba75804e06 03/2012...

  • Page 13: Commissioning

    Oxi 3310 Commissioning Commissioning Scope of delivery  D.O. meter Oxi 3310  4 batteries 1.5 V Mignon type AA  USB cable  Short instructions  CD-ROM with detailed operating manual Initial commissioning Perform the following activities:  Insert the supplied batteries ...

  • Page 14: Switching On The Meter

    Commissioning Oxi 3310 Place four batteries (type Mignon AA) in the battery compartment. Note Alternatively, you can also use Ni-MH rechargeable batteries (type Mignon AA). In order to charge the batteries, an external charging device is required. Caution Make sure that the poles of the batteries are positioned correctly.

  • Page 15: Operation

    Oxi 3310 Operation Operation Switching on the meter Switching on Press the <On/Off> key. The meter performs a self-test. The display shows the manufacturer's logo while the self-test is being performed. The measured value display appears. 7.92 mg/l 25.1 °C 22.09.2008...

  • Page 16: General Operating Principles

    An overview of the operating elements and the display is given in display section 1.1 and section 1.2. Operating modes, An overview of the operating modes and navigation of the Oxi 3310 is navigation given in section 4.2.1 and section 4.2.2. 4.2.1 Operating modes The meter has the following operating modes: ...

  • Page 17: Navigation

    Oxi 3310 Operation 4.2.2 Navigation Measured value display In the measured value display, you can  Open the menu for calibration and measurement settings with <F1> (short keystroke)  Open the Storage & config menu with the sensor-independent settings with <F1 >...
  • Page 18 Operation Oxi 3310  Functions Functions are designated by the name of the function. They are immediately carried out by confirming with <ENTER>. Example: Display the Calibration record function. Calibration record Calibration data storage Calibration interval 150 d Comparison meas.

  • Page 19: Example 1 On Navigation: Setting The Language

    Oxi 3310 Operation 4.2.3 Example 1 on navigation: Setting the language Press the <On/Off> key. The measured value display appears. The instrument is in the measuring mode. 7.92 mg/l 25.1 °C 22.09.2008 Menu USB output 08:00 Using <F1 >/[Menu] open the Storage & config menu.
  • Page 20 Operation Oxi 3310 System General Interface Clock Service information Reset 22.09.2008 Back 08:00 Select the General submenu with <▲><▼>. The current selection is displayed with a frame. Open the General submenu with <ENTER>. General Language: English Beep Illumination Contrast 48 %...

  • Page 21: Example 2 On Navigation: Setting The Date And Time

    Oxi 3310 Operation Confirm the setting with <ENTER>. The meter switches to the measuring mode. The selected language is active. 4.2.4 Example 2 on navigation: Setting the date and time The measuring instrument has a clock with a date function. The date and time are indicated in the status line of the measured value display.
  • Page 22 Operation Oxi 3310 Clock Date format dd.mm.yyyy Date 30.10.2008 Time 14:53:40 22.09.2008 Back 08:00 Change and confirm the setting with <▲><▼> and <ENTER>. The minutes are highlighted. Change and confirm the setting with <▲><▼> and <ENTER>. The seconds are highlighted.

  • Page 23: Sensor-Independent Settings

    Oxi 3310 Operation Sensor-independent settings The Storage & config menu comprises the following settings:  System (see section 4.3.1).  Data storage (see section 4.3.2) 4.3.1 System Overview The following sensor-independent meter characteristics can be adjusted in the Storage & config/System menu: ...

  • Page 24: Data Storage

    This menu contains all functions to display, edit and erase stored measured values and calibration records. Note Detailed information on the storage functions of the Oxi 3310 is given in section 4.5. 4.3.3 Automatic Stability control The function, automatic Stability control (AutoRead) continually checks the stability of the measurement signal.

  • Page 25: Dissolved Oxygen

     D.O. concentration  D.O. saturation index ("D.O. saturation")  D.O. partial pressure D.O. measurements with the Oxi 3310 can be carried out with the CellOx 325 or DurOx 325 D.O. sensor. The measuring instrument automatically recognizes the type of the connected D.O.

  • Page 26: Measuring

    Operation Oxi 3310 4.4.2 Measuring You can carry out D.O. measurements as follows: Perform the preparatory activities according to section 4.4.1. Immerse the D.O. sensor in the test sample. 7.92 mg/l 25.1 °C [Sal] 22.09.2008 Menu USB output 08:00 Selecting the You can switch between the following displays with <M>:...
  • Page 27 Oxi 3310 Operation Release the frozen measured value again with <AR>. The HOLD function is switched off. The [HOLD] status display disappears. Stability control The stability control function (AutoRead) continually checks the stability (AutoRead ) of the measurement signal. The stability has a considerable impact on the reproducibility of measured values.

  • Page 28: Settings For D.o. Sensors (Menu Or Measurement And Calibration Settings)

    Operation Oxi 3310 Measured parameter Time interval Stability in the time interval Δ : better than 0.05 mg/l D.O. concentration 20 seconds Δ : better than 0.6 % D.O. saturation 20 seconds Δ : Better than 1.2 mbar D.O. partial pressure...
  • Page 29 Oxi 3310 Operation Menu item Possible Description setting Calibration / Enables to adjust the Comparison meas. measured value with the aid of a comparison measurement, e.g. Winkler titration. For details, see section 4.4.4. Sal correction Manual salt content correction for concentration measurements.

  • Page 30: Calibration

    Sensors of different types can be calibrated separately from each other. When one sensor type is calibrated, the calibration data of the other type remains stored. The Oxi 3310 recognizes the type of the connected sensor and automatically uses the correct calibration data.
  • Page 31 Oxi 3310 Operation Sample record: 31.10.2008 16:55:12 Oxi 3310 Ser. no. 08502113 CALIBRATION O2 31.10.2008 16:13:33 S = 0.88 25.0 °C Sensor +++ Calibration evaluation After the calibration, the measuring instrument automatically evaluates the current status of the calibration. The evaluation appears on the display and in the calibration record.
  • Page 32 Operation Oxi 3310 Start the calibration with <CAL>. The last calibration data (relative slope) is displayed. 0.88 25.1 °C OxiCal 22.09.2008 08:00 Start the measurement with <ENTER>. The measured value is checked for stability (stability control). The [AR] status indicator is displayed. The measured parameter flashes.

  • Page 33: Displaying Calibration Records

    Oxi 3310 Operation 7.92 mg/l 25.1 °C OxiComp 22.09.2008 08:00 Start the measurement with <ENTER>. The measured value is checked for stability (stability control). The [AR] status indicator is displayed. The measured parameter flashes. Wait for the end of the AutoRead measurement or accept the calibration value with <ENTER>.
  • Page 34 Operation Oxi 3310 The calibration records of the last calibrations (up to 10) are available in the menu, <F1>/[Menu] / Calibration / Calibration data storage and in the menu, <F1 >/[Menu] / Storage & config/Data storage / Calibra- tion data storage.

  • Page 35: Data Storage

    Otherwise, the AR display is missing.  Calibration evaluation: +++, ++, +, -, or no evaluation Storage locations The Oxi 3310 meter has two measurement data memories. The measured values recorded either manually or automatic are stored separately in individual measurement data memories.

  • Page 36: Manual Storage

    Operation Oxi 3310 4.5.1 Manual storage You can transmit a measurement dataset to the data storage as follows. The dataset is at the same time output to the interface: Press the <STO> key shortly. The menu for manual storage appears.

  • Page 37: Automatic Storage At Intervals

    Oxi 3310 Operation 4.5.2 Automatic storage at intervals The storage interval (Interval) determines the time interval between automatic storage processes. Each storage process transmits the current dataset to the interface at the same time. Configuring the Press the <STO_> key.
  • Page 38 Operation Oxi 3310 Menu item Possible Description setting Duration 1 min ... x min Storage duration. Specifies after which time the automatic storage should be terminated. The lower limit of the storage duration is restricted by the storage interval. The upper limit is restricted by the number of free storage locations.

  • Page 39: Storage

    Oxi 3310 Operation Terminating the Proceed as follows to switch off the automatic storage function before automatic storage the adjusted storage duration has expired: function prematurely Press the <STO_> key. The following window appears. Warning Stop automatic storage? 22.09.2008 Back 08:00 Using <▲><▼>, select Yes and confirm with <ENTER>.
  • Page 40 Operation Oxi 3310 Settings Menu item Setting/ Description function Data storage / Displays all measurement Manual data storage / datasets page by page. Display Further options:  Scroll through the datasets with <▲><▼>.  Output the displayed dataset to the interface with <F2>/[USB output].

  • Page 41: Displaying And Editing The Measurement Data

    Oxi 3310 Operation Sample 31.10.2008 09:27:20 Oxi 3310 Ser. No. 12345678 ID number 1 O2 = 7.92 mg/l 25.0 °C Sal = 6.5 ________________________________________ 31.10.2008 09:56:24 Oxi 3310 Ser. No. 12345678 ID number 1 O2 8.14 mg/l 25.0 °C Quitting the display...

  • Page 42: Transmitting Data (Usb Interface)

    Operation Oxi 3310 Transmitting data (USB interface) 4.6.1 Options for data transmission Via the USB interface you can transmit data to a PC. The following table shows which data are transmitted to the interface in which way: Data Control Operation / description ...

  • Page 43: Connecting A Pc

    To display the measurement data of the Oxi 3310 correctly on the PC, the Oxi 3310 has to be set up for communication with the MultiLab pilot. To do so, set the Send ID option to No in the menu for automatic storage (<F2...

  • Page 44: Reset

    Operation Oxi 3310 Reset You can reset (initialize) all sensor settings and sensor-independent settings separately from each other. 4.7.1 Resetting the measurement settings Note The calibration data are reset to the default settings together with the measuring parameters. Recalibrate after performing a reset.

  • Page 45: Resetting The System Settings

    Oxi 3310 Operation 4.7.2 Resetting the system settings The following system settings can be reset to the delivery status: Setting Default settings Language English Beep Baud rate 4800 Baud Output format ASCII Contrast 50 % Illumination Auto Switchoff time The system settings are reset in the menu, Storage & config / System / Reset.
  • Page 46 Operation Oxi 3310 ba75804e06 03/2012...

  • Page 47: Maintenance, Cleaning, Disposal

    Oxi 3310 Maintenance, cleaning, disposal Maintenance, cleaning, disposal Maintenance The only maintenance activity required is replacing the batteries. Note See the relevant operating manuals of the D.O. sensors for instructions on maintenance. 5.1.1 Replacing the batteries Unscrew the two screws (1) on the underside of the meter.

  • Page 48: Cleaning

    Maintenance, cleaning, disposal Oxi 3310 Close the battery compartment (2) and tighten the screws (1). Cleaning Occasionally wipe the outside of the measuring instrument with a damp, lint-free cloth. Disinfect the housing with isopropanol as required. Caution The housing is made of synthetic material (ABS). Thus, avoid contact with acetone or similar detergents that contain solvents.

  • Page 49: What To Do If

    Oxi 3310 What to do if... What to do if... Error message, Cause Remedy – Measured value outside the – Use a suitable D.O. sensor measuring range Error message, Cause Remedy Error – D.O. sensor contaminated – Clean D.O. sensor and...
  • Page 50 What to do if... Oxi 3310 ba75804e06 03/2012...

  • Page 51: Technical Data

    Oxi 3310 Technical data Technical data General data Dimensions approx. 180 x 80 x 55 mm Weight approx. 0.4 kg Mechanical structure Type of protection IP 67 Electrical safety Protective class Test certificates CE, cETLus Ambient Storage - 25 °C ... + 65 °C...

  • Page 52: Measuring Ranges, Resolution, Accuracy

    Technical data Oxi 3310 Measuring ranges, resolution, accuracy Measuring ranges, Note: The values quoted in brackets apply especially for the resolution DurOx 325 sensor. Parameter Measuring range Resolution D.O. concentration 0 ... 20.00 (0 ... 20.0) 0.01 (0.1) [mg/l] 0 ... 90.0 (0 ... 90) 0.1 (1)
  • Page 53 Oxi 3310 Technical data FCC Class A Equipment Statement Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
  • Page 54 Technical data Oxi 3310 ba75804e06 03/2012...

  • Page 55: Lists

    (e. g. 3 m; 0.5 s; 5.2 A; 373.15 K). ® OxiCal WTW name for a procedure to calibrate D.O. measuring systems in water vapor saturated air. Reset Restoring the original condition of all settings of a measuring system.
  • Page 56 General designation for the quantity of salt dissolved in water. Slope (relative) Designation used by WTW in the D.O. measuring technique. It expresses the relation of the slope value to the value of a theoretical reference sensor of the same construction type.
  • Page 57 Oxi 3310 Lists Index Measuring ......26 Menu for calibration and measurement Air calibration beaker ....30 settings .
  • Page 58 Lists Oxi 3310 ba75804e06 03/2012...

  • Page 59: Appendix: Firmware Update

     a free USB interface (virtual COM port) on the PC  the driver for the USB interface (on the enclosed CD-ROM)  the USB cable (included in the scope of delivery of the Oxi 3310). Program installation Install the downloaded firmware update on a PC.
  • Page 60 Appendix: Firmware update Oxi 3310 ba75804e06 03/2012...
  • Page 62 Wissenschaftlich-Technische Werkstätten GmbH Dr.-Karl-Slevogt-Straße 1 D-82362 Weilheim Germany Tel: +49 (0) 881 183-0 +49 (0) 881 183-100 Fax: +49 (0) 881 183-420 E-Mail: Info@WTW.com Internet: http://www.WTW.com...

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