Operating manual Oxi 3205 O2 [Sal] 7.92 25.0 32 0 mg/l °C 5 Dissolved oxygen (D.O.
Oxi 3205 Accuracy when going to press Copyright The use of advanced technology and the high quality standard of our instruments are the result of a continuous development. This may result in differences between this operating manual and your meter. Also, we cannot guarantee that there are absolutely no errors in this manual. Therefore, we are sure you will understand that we cannot accept any legal claims resulting from the data, figures or descriptions.
Oxi 3205 Contents Oxi 3205 - Contents 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1 1.2 1.3 2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.1 2.2 3 4.3 4.4 4.5 5.2 5.3 5.4 03/2009 Switching on the meter . . . . . . . . . . . . . . . . . . . . . . . . . . General operating principles . . . . . . . . . . . . . . . . . . . . . . 4.2.1 Operating modes . . . . . . . . . . . . . . . . . . . . . . . . 4.2.
Contents Oxi 3205 6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 7 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 7.1 7.2 8 4 General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Measuring ranges, resolution, accuracy . . . . . . . . . . . . . 36 Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oxi 3205 Overview 1 Overview The Oxi 3205 compact precision dissolved oxygen (D.O.) meter enables you to perform D.O. measurements quickly and reliably. The Oxi 3205 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. meter. 3 O2 [Sal] 7.92 25.
Overview Oxi 3205 1.1 Keypad Oxi 3205 In this operating manual, keys are indicated by brackets <..> . The key symbol (e.g. ) 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. ).
Oxi 3205 Overview 1.2 Display 3 O2 2 7.92 mg/l 25.
Overview Oxi 3205 1.3 Socket field 1 2 Connectors: 1 D.O. sensor 2 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). Almost all customary D.O. sensors fulfill these conditions.
Oxi 3205 Safety 2 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. Target group Safety instructions The meter was developed for work in the field and in the laboratory.
Safety Oxi 3205 2.1 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 TECHNICAL DATA must be observed. Only the operation and running of the meter according to the instructions given in this operating manual is authorized. Any other use is considered unauthorized. 2.
Oxi 3205 Safety Safe operation If safe operation is no longer possible, the meter must be taken out of service and secured against inadvertent operation! Safe operation is no longer possible if the meter: z has been damaged in transport z has been stored under adverse conditions for a lengthy period of time z is visibly damaged z no longer operates as described in this manual. If you are in any doubt, please contact the supplier of the meter.
Safety 12 Oxi 3205 ba75797e01 03/2009
Oxi 3205 Commissioning 3 Commissioning 3.1 Scope of delivery z D.O. meter Oxi 3205 z 4 batteries 1.5 V Mignon type AA z Short instructions z CD-ROM with detailed operating manual 3.2 Inserting the batteries Initial commissioning 1 Unscrew the two screws (1) on the underside of the meter. 2 Open the battery compartment (2) on the underside of the meter. 1 2 3 Place four batteries (type Mignon AA) in the battery compartment.
Commissioning Switching on the meter Oxi 3205 4 Close the battery compartment (2) and tighten the screws (1). 1 Press the key. The meter performs a self-test. The display shows the manufacturer's logo while the self-test is being performed. Subsequently, the meter switches to the measuring mode (measured value display). Note The meter has an energy saving feature to avoid unnecessary battery depletion.
Oxi 3205 Operation Switching on 4 Operation 4.1 Switching on the meter Press the 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. O2 7.92 mg/l 25.1 °C Menu Switching off 22.09.2008 08:00 Press the key. Automatic switch-off function The instrument has an automatic switch-off function in order to save the batteries (see section 4.3).
Operation Oxi 3205 4.2 General operating principles This section contains basic information on the operation of the Oxi 3205. Operating elements, display Operating modes, navigation An overview of the operating elements and the display is given in section 1.1 and section 1.2. An overview of the operating modes and navigation of the Oxi 3205 is given in section 4.2.1 and section 4.2.2. 4.2.
Oxi 3205 Operation 4.2.2 Measured value display Navigation In the measured value display, you can z Open the menu for calibration and measurement settings with (short keystroke) z Open the Configuration menu with the sensor-independent settings with (long keystroke (approx. 2 s). _ z Change the display in the measurement window by pressing (e.g. D.O. concentration −> D.O. saturation index −> D.O. partial pressure −>).
Operation Oxi 3205 Messages Information is marked by the i symbol. It cannot be selected. Example: O2 Calibration record Calibration interval: Temperature unit Sal correction Reset 14 d °C Off i Air pressure = 941 mbar Note The principles of navigation are explained in the section "Setting the language" by reference of an example (see section 4.2.3).
Oxi 3205 Operation 4.2.3 1 Example on navigation: Setting the language Press the key. The measured value display appears. The instrument is in the measuring mode. O2 7.92 mg/l 25.1 °C 2 _ Using open the Configuration menu. The instrument is in the setting mode. Configuration Language: Beep: Illumination: Contrast: Switchoff time: Service information Reset ba75797e01 03/2009 English Off On 48 % 30 min 3 Select the Language submenu with <▲><▼>.
Operation Oxi 3205 Configuration Language: Illumination: Contrast: Switchoff time: Service information Reset 20 Deutsch On 48 % 30 min 5 Select the required language with <▲><▼>. 6 Confirm the setting with . The meter switches to the measuring mode. The selected language is active.
Oxi 3205 Operation 4.3 Sensor-independent settings 4.3.1 Setting in the Configuration menu _ To open the Configuration menu, press the key in the measured value display. After completing the settings, switch to the measured value display with . Menu item Setting Description Language Deutsch English (further) Select the menu language Illumination Auto On Off Switching the display illumination on/off Contrast 0 ... 100 % Changing the display contrast Switchoff time 10 min ...
Operation Oxi 3205 4.4 Dissolved oxygen 4.4.1 General information You can measure the following parameters: z D.O. concentration z D.O. saturation index ("D.O. saturation") z D.O. partial pressure D.O. measurements with the Oxi 3205 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. sensor. Temperature measurement Preparatory activities The CellOx 325 and DurOx 325 D.O.
Oxi 3205 Operation 4.4.2 Measuring You can carry out D.O. measurements as follows: 1 Perform the preparatory activities according to section 4.4.1. 2 Immerse the D.O. sensor in the test sample. O2 7.92 mg/l 25.1 °C Selecting the displayed measured parameter You can switch between the following displays with : z D.O. concentration [mg/l] z D.O. saturation [%] z D.O. partial pressure [mbar]. Salinity correction When measuring the concentration of see water, a salinity correction is required.
Operation Oxi 3205 4.4.3 Settings for D.O. sensors (menu or measurement and calibration settings) The settings are available in the menu for measurement and calibration settings. To open the settings, display the required parameter in the measured value display and press the or key. After completing the settings, switch to the measured value display with . 24 Menu item Possible setting Description Calibration record - Displays the calibration record of the last calibration.
Oxi 3205 Operation 4.4.4 Why calibrate? When to calibrate? D.O. calibration D.O. sensors age. This changes the slope of the D.O. sensor. Calibration determines the current slope of the sensor and stores this value in the instrument. z After connecting another D.O. sensor z When the sensor symbol flashes (after the calibration interval has expired).
Operation Calibration evaluation Oxi 3205 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. Display Error Calibration record Relative slope +++ S = 0.8 ... 1.25 ++ S = 0.7 ... 0.8 + S = 0.6 ... 0.7 Error S < 0.6 or S > 1.25 Eliminate the error according to chapter 6 WHAT TO DO IF...
Oxi 3205 Operation O2 0.88 25.1 °C OxiCal 4 Start the measurement with . The measured value is checked for stability (stability control). The [AR] status indicator is displayed. The measured parameter flashes. 5 Wait for the end of the AutoRead measurement or accept the calibration value with . The calibration record is displayed. 6 Using , switch to the measured value display. 4.4.
Operation Oxi 3205 4.5 Reset You can reset (initialize) all sensor settings and sensor-independent settings separately from each other. 4.5.1 Resetting the measurement settings Note The calibration data are reset to the default settings together with the measuring parameters. Recalibrate after performing a reset. The following settings for D.O. measurements are reset to the default settings with the Reset function: Setting Default settings Cal. interval 14 d Comparison meas.
Oxi 3205 Operation 4.5.2 Resetting the system settings The following system settings can be reset to the delivery status: Setting Default settings Language English Contrast 50 % Illumination Auto Switchoff time 1h The system settings are reset in the menu, Configuration / System / Reset. To open the Configuration menu, press the key in the measured value display.
Operation 30 Oxi 3205 ba75797e01 03/2009
Oxi 3205 Maintenance, cleaning, disposal 5 Maintenance, cleaning, disposal 5.1 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 1 Unscrew the two screws (1) on the underside of the meter. 2 Open the battery compartment (2) on the underside of the meter. 1 2 3 Remove the four batteries from the battery compartment.
Maintenance, cleaning, disposal Oxi 3205 5 5.2 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. Remove any splashes immediately. 5.3 Packing This meter is sent out in a protective transport packing.
Oxi 3205 What to do if... 6 Error message, OFL Cause Error message, Error Cause What to do if... – Measured value outside the measuring range – D.O. sensor contaminated Remedy – Use a suitable D.O. sensor Remedy – Clean D.O.
What to do if...
Oxi 3205 Technical data Dimensions Weight Mechanical structure 7 Technical data 7.1 General data approx. 180 x 80 x 55 mm approx. 0.4 kg Type of protection IP 67 Electrical safety Protective class III Test certificates CE Ambient conditions Power supply Guidelines and norms used ba75797e01 03/2009 Storage - 25 °C ... + 65 °C Operation -10 °C ... + 55 °C Climatic class 2 Batteries 4 x 1.
Technical data Oxi 3205 7.2 Measuring ranges, resolution Accuracy (± 1 digit) Measuring ranges, resolution, accuracy Note: The values quoted in brackets apply especially for the DurOx 325 sensor. Parameter Measuring range Resolution D.O. concentration [mg/l] 0 ... 20.00 (0 ... 20.0) 0 ... 90.0 (0 ... 90) 0.01 (0.1) 0.1 (1) Saturation [%] 0 ... 200.0 (0 ... 200) 0 ... 600 0.1 (1) 1 D.O. partial pressure [mbar] 0 ... 200.0 (0 ... 200) 0 ... 1250 0.1 (1) 1 T [°C] 0 ... 50.0 0.
Oxi 3205 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.
Technical data 38 Oxi 3205 ba75797e01 03/2009
Oxi 3205 Lists 8 Lists This chapter provides additional information and orientation aids. Specialist terms Index The glossary briefly explains the meaning of the specialist terms. However, terms that should already be familiar to the target group are not described here. The index will help you to find the topics that you are looking for. Glossary Adjusting AutoRange Name of the automatic selection of the measuring range. Calibration Comparing the value from a measuring system (e. g.
Lists Oxi 3205 Salinity Salt content Slope (relative) Stability control Test sample 40 The absolute salinity SA of seawater corresponds to the relationship of the mass of dissolved salts to the mass of the solution (in g/Kg). In practice, this dimension cannot be measured directly. Therefore, the practical salinity according to IOT is used for oceanographic monitoring. It is determined by measuring the electrical conductivity. General designation for the quantity of salt dissolved in water.
Oxi 3205 Lists Index A S Air calibration beaker . . . . . . . . . . . . . . . . . 25 Authorized use . . . . . . . . . . . . . . . . . . . . . . 10 Automatic switch-off . . . . . . . . . . . . . . . . . . 15 AutoRead . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Sample display . . . . . . . . . . . . . . . . . . . . . . 7 Saving . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Scope of delivery . . . . . . . . . . .
Lists 42 Oxi 3205 ba75797d01 03/2009
Wissenschaftlich-Technische Werkstätten GmbH Dr.-Karl-Slevogt-Straße 1 D-82362 Weilheim Germany Tel: Fax: E-Mail: Internet: +49 (0) 881 183-0 +49 (0) 881 183-100 +49 (0) 881 183-420 Info@WTW.com http://www.WTW.
