YSI Model 52 Operation Manual
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YSI Model 52 Operation Manual

Dissolved oxygen meter
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YSI Model 52
Dissolved Oxygen Meter
Operations
Manual

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Summary of Contents for YSI Model 52

  • Page 1 YSI Model 52 Dissolved Oxygen Meter Operations Manual...

  • Page 3: Table Of Contents

    5.5 Reviewing Recorded Data ......................15 5.6 Printing Data from Memory......................16 5.7 Sending Recorded Data to a Personal Computer ................16 5.8 Erasing the Model 52 Memory ....................... 17 SECTION 6 SYSTEM SETUP ......................... 19 6.1 Setting the Time and Date....................... 19 6.2 Setting Up Autostable ........................
  • Page 4 9.4 Error Calculation Example ......................30 SECTION 10 WARRANTY AND REPAIR .................... 32 APPENDIX A GENERAL SPECIFICATIONS..................39 APPENDIX B REQUIRED NOTICE ...................... 41 APPENDIX C OXYGEN SOLUBILITY ....................45 APPENDIX D CALIBRATION TABLES ....................43...

  • Page 5: Section 1 Introduction

    The YSI Model 52 is also equipped with non-volatile memory, capable of storing up to 70 DO and temperature readings. Any data stored in internal memory can be reviewed on the LCD, or batch uploaded to a PC or an RS232 printer.

  • Page 6: Display And Function Keys

    Section 1 DISPLAY AND FUNCTION KEYS A rotary function switch and four keys provide complete control of the Model 52. The four keys are SKIP,! ," , and CONFIRM. ! ! ! ! and" are used to modify a setting either up or down (for example, calibration or salinity values can be modified for each calibration process if required).

  • Page 7: Section 2 Preparing The Meter

    These messages, with appropriate corrective actions, are listed in the Maintenance and Troubleshooting section of this manual (see section X.B.). If you have a problem you cannot resolve, call YSI Technical Support, (937) 767-7241 or (800) 765-9974.
  • Page 8 Preparing the Meter Section 2 YSI, Incorporated Model 52...

  • Page 9: Section 3 Calibration

    The typical error resulting from calibration to altitude alone will be ±4% of your reading. Use altitude values only when you cannot determine the true barometric pressure. YSI, Incorporated Model 52...

  • Page 10: Calibration In Air

    9 6. 4 % 3. Using ! and ", adjust the number to the calibration value determined from the altitude or pressure chart on the back of the Model 52. SKIP sets the value to 100.0%; and shows the following display: E n t e r c a l v a l u e S a t .

  • Page 11: Calibration In Air-Saturated Water

    1. Determine the dissolved oxygen value of a sample by Winkler titration. 2. Place the probe in the sample and provide adequate stirring (at least 1 foot per second). Switch to O -TEMP and observe temperature and oxygen readings for stability. YSI, Incorporated Model 52...

  • Page 12: Zero Calibration

    All oxygen probes have a small background current, even in the absence of oxygen. Model 52 compensation is based on the average background current of YSI 5700 and YSI, Incorporated Model 52...
  • Page 13 Press CONFIRM to calibrate to zero. The display will ask you to wait, then show "Calibrated to 0.0 %." After zeroing, rinse the probe thoroughly to remove any residual trace of chemicals. The Model 52 is calibrated at two points: the calibration value you select, and its default zero. YSI, Incorporated...

  • Page 14: Resetting The Default Zero Calibration

    This procedure resets the meter to its original state. You must reset the time, date, salinity, and the RS232 parameters after restoring the default zero. As with the zero calibration, you must also recalibrate after restoring the default zero. YSI, Incorporated Model 52...

  • Page 15: Section 4 Salinity

    After calibrating in air or in air-saturated water, you may change the meter's salinity setting without recalibrating. You may, for instance, calibrate only once and then proceed to measure oxygen in a variety of samples at different salinity by simply setting the proper salinity before making each measurement. YSI, Incorporated Model 52...
  • Page 16 Disregard the mg/L reading when measuring non-aqueous liquids. Such samples may have an oxygen solubility or Bunsen coefficient significantly different from those used in the Model 52. Note: If you are calibrating in mg/L, the salinity must be set before calibration.

  • Page 17: Section 5 Operation

    Observe readings for stability and record measurements. The last digit suppression feature of the Model 52 can be activated and deactivated by pressing the SKIP button. This feature will “hide” the last digit in both the mg/L and % oxygen readings and round each reading to the nearest whole digit.

  • Page 18: Recording To Internal Memory

    Section 5 RECORDING TO INTERNAL MEMORY The Model 52 has several functions available while the function switch is set to “O Temp.” Use the arrow keys to see the following menu options. N o r m a l O p e r a t i o n...

  • Page 19: Reviewing Recorded Data

    Operation Section 5 To activate the Memory feature of the YSI Model 52, press the " key while the function switch is set to O -TEMP. A display similar to the following will appear: 7 . 0 m g / L 2 3 .

  • Page 20: Printing Data From Memory

    Section 5 PRINTING DATA FROM MEMORY To send all data from the YSI Model 52 memory to a serial printer, attach the RS232 Cable (supplied) to the Model 52 and your printer. With the function switch set to O TEMP press the " key repeatedly until a display similar to the following appears: 7 .

  • Page 21: Erasing The Model 52 Memory

    E r a s e D a t a ? N o If you do not wish to erase all of the Model 52 memory, press confirm now. If you do want to erase all of the Model 52 memory, press the " key. A display similar to the...

  • Page 22: Section 6 System Setup

    When using the autostable feature, the Model 52 indicates that all O -TEMP readings are stable by displaying an * to the left of the time. The Model 52 uses criteria that you input, to determine what a stable reading is. You select the maximum % of change that you allow to occur during a selected number of readings.
  • Page 23 % ? Press CONFIRM. A display similar to the following will appear: S e t u p c h a n g e i n % = 0 . 4 YSI, Incorporated Model 52...

  • Page 24: Setting Communication Parameters

    SETTING COMMUNICATION PARAMETERS The Model 52 will default to communications values that are appropriate for most printers and personal computers. The defaults are Baud rate: 9600; parity = none; word length = 8; and stop bits = 1. We recommend that you try these default settings before attempting to change them.

  • Page 25: Last Digit Suppression

    = 9 6 0 0 Use ! to increase the baud rate and " to decrease it. The Model 52 supports 110, 300, 1200, 2400, 4800, and 9600 baud and defaults to 9600. When you have selected the correct baud rate, press CONFIRM to enter the value.
  • Page 26 L C D C o n t r a s t L O W Press the ! key to increase the contrast (lighten the display background). Press the" key to decrease the contrast (darken the display background). YSI, Incorporated Model 52...
  • Page 27 System Setup Section 6 YSI, Incorporated Model 52...

  • Page 28: Section 7 Personal Computer Interface

    A prompt on the computer screen will ask you to define the directory and file name to which you will send readings from the Model 52. Press enter, then switch the Model 52 to external control. A new reading will scroll to the screen approximately once per second.
  • Page 29 Personal Computer Interface Section 7 YSI, Incorporated Model 52...

  • Page 30: Batteries

    The E.0 through E.1 Error Modes could be displayed at any time if a system error is detected. The E.2 through E.4 messages can be displayed only during calibration. YSI, Incorporated Model 52...
  • Page 31 Repair or replace Electrodes need Repair or replace resurfacing Internal leakage in probe Repair or replace or cable connector M.XX Incorrect Mode Switch or circuit defect Return for service (x may be any digit or any letter) YSI, Incorporated Model 52...

  • Page 32: Section 9 Measurement Errors

    Hg and at measurement temperature, and c is the measured DO value. a, b and c are all measured in mg/L or all are measured in % air saturation. Use the following table to determine the background factor: probe temp. in °C background factor (%) YSI, Incorporated Model 52...

  • Page 33: Type 3 Errors: Calibration

    3 errors are replaced by the uncertainty attributable to the overall Winkler determination. This example is for an extreme combination of conditions. Calibration conditions: method: air calibration temperature: 24°C altitude: 600 feet calibrated to: 8.24 mg/L Measurement conditions: temperature: 20°C reading: 7.26 mg/L mode: mg/L YSI, Incorporated Model 52...
  • Page 34 ±0.017 x 7.26 ±0.12 altitude ±0.018 x 7.26 ±0.13 Probable error can be determined by an r.m.s. calculation: r.m.s. error = [.022 + .012 + .022 + .062 + .122 + .132 ]1/2 = ±0.19 mg/L YSI, Incorporated Model 52...
  • Page 35 Discussion of Measurement Errors Section 9 YSI, Incorporated Model 52...

  • Page 36: Section 10 Warranty And Repair

    Within the warranty period, YSI will repair or replace, at its sole discretion, free of charge, any product that YSI determines to be covered by this warranty.
  • Page 37 Section 10 AUTHORIZED U.S. SERVICE CENTERS North and East Region YSI Incorporated • Repair Center • 1725 Brannum Lane • Yellow Springs, Ohio • 45387 • Phone: (800) 765-4974 • (937) 767-7241• E-Mail: info@ysi.com South Region C.C. Lynch & Associates • 212 E. 2nd Street • Suite 203 • Pass Christian, Mississippi •...
  • Page 38 Warranty and Repair Section 10 INTERNATIONAL SERVICE CENTERS YSI Incorporated • Repair Center • 1725 Brannum Lane • Yellow Springs, Ohio • 45387 • Phone: (937) 767-7241• E-Mail: info@ysi.com Lynchford House • Lynchford Lane • Farnborough • Hampshire • GU146LT • Phone: (44-1252) 514711 •...

  • Page 39: Cleaning Instructions

    Disposition costs will be the responsibility of the sender. When service is required, either at the user's facility or at YSI, the following steps must be taken to insure the safety of our service personnel.
  • Page 40 Country __________________ Phone Model No. of Device ______ Lot Number _ Contaminant (if known) Cleaning Agent(s) used Radioactive Decontamination Certified? (Answer only if there has been radioactive exposure) ___ Yes ___ No Cleaning Certified By Name Date YSI, Incorporated Model 52...
  • Page 41 Warranty and Repair Section 10 YSI, Incorporated Model 52...

  • Page 42: Appendix A General Specifications

    0.0 to 40.0 ppt Accuracy: ±.02 mg/L Operating Environment 0 to 45°C, 10 to 90% humidity, non-condensing Water Resistance With the probe receptacle capped, every case opening is has a gasket to resist the entry of water. YSI, Incorporated Model 52...
  • Page 43 General Specifications Appendix A Power The Model 52 is powered by 6 alkaline D-cells batteries, or an AC adapter (optional). Batteries power the instrument for approximately 100 hours. Size and Weight 21.6 by 28 by 9.5 cm; 2.4 kg 8.5 by 11 by 3.75 inches; 4.3 pounds...

  • Page 44: Appendix B Required Notice

    The user may find the following booklet prepared by the Federal Communications Commission helpful: “How to Identify and Resolve Radio-TV Interference Problems.” This booklet is available from the U.S. Government Printing Office, Washington, D.C. 20402, Stock No. 0004-000-00345-4 YSI, Incorporated Model 52...
  • Page 45 Required Notice Appendix B YSI, Incorporated Model 52...

  • Page 46: Appendix C Oxygen Solubility

    5.08 41.0 6.31 6.03 5.75 5.49 5.24 5.01 42.0 6.21 5.93 5.67 5.41 5.17 4.93 43.0 6.12 5.84 5.58 5.33 5.09 4.86 44.0 6.02 5.75 5.50 5.25 5.02 4.79 45.0 5.93 5.67 5.41 5.17 4.94 4.72 YSI, Incorporated Model 52...
  • Page 47 Oxygen Solubility Appendix C YSI, Incorporated Model 52...

  • Page 48: Appendix D Calibration Tables

    22.13 75.0 8100 2469 21.85 74.0 8455 2577 21.54 73.0 8815 2687 21.26 71.9 9178 2797 20.94 70.9 9545 2909 20.63 69.9 9917 3023 20.35 68.9 10293 3137 20.04 67.9 10673 3253 19.76 66.9 11058 3371 YSI, Incorporated Model 52...
  • Page 49 Calibration Tables Appendix D YSI, Incorporated Model 52...
  • Page 50 Calibration Tables Appendix D YSI, Incorporated Model 52...
  • Page 51 1700/1725 Brannum Lane Yellow Springs, Ohio 45387 USA (800) 765-4874 (937) 767-7241 FAX (937) 767-9320 Website: http://www.YSI.com E-mail: Info@ysi.com ITEM # 052010 DRW # A52010D May 1998...

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