YSI 58 Operation Manual
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YSI 58 Operation Manual

Dissolved oxygen meter
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YSI 58
Dissolved Oxygen Meter
Operations
Manual

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  • Page 1 YSI 58 Dissolved Oxygen Meter Operations Manual...

  • Page 3: Table Of Contents

    2.2 WARRANTY CARD ..........................2 2.3 BATTERIES..............................2 SECTION 3 PREPARING THE PROBE....................... 3 3.1 CHOOSING THE CORRECT PROBE...................... 3 3.1.1 YSI 5239 DO FIELD PROBE ......................3 3.1.2 YSI 5905 BOD PROBE ........................3 3.1.3 YSI 5739 DO PROBE ........................4 3.1.4 YSI 5718 DO FIELD PROBE ......................
  • Page 4 APPENDIX B REQUIRED NOTICE ......................30 APPENDIX C ACCESSORIES AND REPLACEMENT PARTS............31 APPENDIX D UNIT CONVERSION CHART ..................32 APPENDIX E OXYGEN SOLUBILITY TABLE..................33 APPENDIX F CALIBRATION VALUES TABLE .................. 35...

  • Page 5: Introduction

    SECTION 1 INTRODUCTION The YSI 58 Dissolved Oxygen Meter is intended for field or laboratory use for dissolved oxygen and temperature measurement and water, but is also suitable for use in certain other fluids. See Section 4.4.2, Measuring Oxygen in Fluids Other than Water. The meter may be used with the YSI 5239 probe, 5905 probe or the 5700 Series probes.

  • Page 6: Preparing The Meter

    When you unpack your new YSI 58 Dissolved Oxygen and Temperature System for the first time, compare the packing list with the contents of the shipping box. If there is anything missing or damaged, contact your YSI dealer from whom you purchased the YSI 58 or YSI Customer Service at 800-765-4974 or 937-767-7241.

  • Page 7: Preparing The Probe

    YSI 5905 is a self-stirring BOD bottle probe. YSI 5739 is designed for field use and may be used with or without a stirrer. A 5740 probe cable or 5795A stirring cable is required for use with the 5739 probe. YSI 5795A has a dual-purpose cable to which both stirrer and probe are connected.

  • Page 8: Ysi 5739 Do Probe

    3.1.5 YSI 5750 BOD BOTTLE PROBE The YSI 5750 probe is similar in design to the 5739, but has a tapered body designed to fit standard US BOD bottles. It does not have a stirrer or cap membranes. Agitation of the sample must be provided by other means, such as a magnetic stirrer.

  • Page 9: Probe Installation - Ysi 5739

    Four D-size carbon-zinc batteries that are housed in the lower battery compartment of the YSI 58 power the stirrer. When the stirrer will not be used for an extended period, these batteries should be removed from the instrument. PROBE INSTALLATION - YSI 5739 To disconnect the cable, unscrew the retaining nut and slide it down the cable to expose the connector.

  • Page 10: Membrane Installation For The 5239 Probe

    5718 and 5739 probes. A selector switch inside the YSI 58 modifies the circuit for the membrane in use. This switch must be set to the position corresponding to the membrane in use. Facing the back of the instrument, with the back cover removed, the switch will be found on the top, right corner of the main PC board.

  • Page 11: Membrane Installation For The 5905 Probe

    3. Hold the membrane cap and fill it at least half full with the electrolyte solution provided. Screw the membrane cap onto the probe moderately tight. A small amount of electrolyte should overflow. 4. Rinse off excess electrolyte from the probe with deionized water. 5. Reinstall the stir paddle. YSI Incorporated YSI 58 DO Meter...

  • Page 12: Membrane Installation For The 5700-Series Probes

    3.3.3 MEMBRANE INSTALLATION FOR THE 5700-SERIES PROBES MEMBRANE INSTALLATION All YSI 5700 Series Probes have similar sensors and should be cared for in the same way. They are precision devices and require careful treatment if measurements of high accuracy are to be made.
  • Page 13 This ensures 100% humidity for accurate calibration and helps protect the probe against drying out in storage. The YSI 5905 and 5750 probes can be stored in a BOD bottle containing about 1” of water.

  • Page 14: Operation

    SECTION 4 OPERATION PRINCIPLES OF OPERATION The probes for use with the YSI 58 are a Clark type voltammetric (polarographic) sensor of dissolved oxygen. An oxygen permeable membrane covers an electrolytic cell consisting of a cathode and an anode. This membrane acts as a diffusion barrier and an isolation barrier preventing the fouling of the cathode surface by impurities in the environment.

  • Page 15: Turning The Instrument On

    8 hours per day operation. TURNING THE INSTRUMENT ON The YSI 58 may be used in a vertical, horizontal or tilted position. It may be carried or moved during use without affecting its accuracy or stability of measurement.

  • Page 16: Air Calibration

    4.3.1 AIR CALIBRATION Air Calibration is the quickest and by far the simplest calibration technique. Experience has shown that it is reliable and is recommended for the YSI 58. Air Calibrate the YSI 58, with any field probe as follows: Set the function switch to % Mode.

  • Page 17: Winkler Titration

    Readjust zero if necessary. Check that the SALINITY knob is set at zero. Adjust the 02 CALIB control to the calibration value determined in the foregoing step. Wait two minutes to verify stability; readjust if necessary. YSI Incorporated YSI 58 DO Meter...

  • Page 18: Calibration Frequency

    The YSI 5795A Submersible Stirrer supplies the necessary stirring for the 5739 probe. The YSI 5905 BOD probe has its own line powered stirrer for laboratory use. When the 5750 BOD probe is used, stirring must be provided such as with a magnetic stirrer.

  • Page 19: Measuring Oxygen In Fluids Other Than Water

    4.4.2 MEASURING OXYGEN IN FLUIDS OTHER THAN WATER The YSI 58 is normally used for measuring the oxygen content of naturally occurring waters and wastewaters. The % air saturation feature of the instrument additionally permits 02 measurement in some non-water fluids including air, most gases, foods and some non-aqueous liquids.

  • Page 20: Recorder Output

    Output at full scale is 1VDC. (0.0005V = 1 digit). Use a recorder with input impedance of at least 50K OHM, and operate it with the terminals ungrounded. A recorder output plug is provided. Cable for connecting the recorder must be supplied by the user. YSI Incorporated YSI 58 DO Meter...

  • Page 21: Care And Maintenance

    2. Erratic readings are a result of loose, wrinkled, damaged, or fouled membranes, or from large (more than 1/4 of the circumference of the probe) bubbles in the electrolyte reservoir. If erratic YSI Incorporated YSI 58 DO Meter...

  • Page 22: 5905 And 5239 Probe Care

    3 times or until all silver deposits are removed and the gold appears to have a matte finish. If the cathode remains tarnished, return the probe for service. Temperature Sensor Anode (Silver) Cathode (Gold) Figure 8 SILVER ANODE YSI Incorporated YSI 58 DO Meter...

  • Page 23: 5700-Series Probe Care

    If the silver anode becomes contaminated, successful calibration can be prevented. Soak the probe overnight in a 3% ammonia solution; rinse with deionized water, and follow the steps to install a new membrane. If it is not possible to calibrate, return the probe to an authorized YSI Repair Center. PROBE STORAGE For long term storage (4 weeks), remove the membrane, thoroughly rinse the sensor with deionized or distilled water and install a new membrane.

  • Page 24: Discussion Of Measurement Errors

    If the probe is calibrated in water-saturated air, then type 3B errors (humidity), the largest error of all types, is virtually eliminated and the maximum possible error is in the order of 0.1 mg/L for the case of calibrating around 25°C. YSI Incorporated YSI 58 DO Meter...

  • Page 25: Troubleshooting

    Change membrane Clean probe (see instructions under Electrode Cleaning) Unstable readings Allow sufficient time for temperature and oxygen stabilization Allow 60 sec for reading to stabilize Change membrane Clean probe (see instructions under Electrode Cleaning) YSI Incorporated YSI 58 DO Meter...
  • Page 26 Check if stir paddle is pushed all 3.1.2 the way in Replace motor Bent stir paddle Replace stir paddle Membrane cap is tight on the Use pliers to loosen the cap (turn 5905 counter clockwise while facing sensor tip) YSI Incorporated YSI 58 DO Meter...

  • Page 27: Warranty And Service Information

    SECTION 8 WARRANTY AND SERVICE INFORMATION YSI 58 Dissolved Oxygen Meters are warranted for two years from date of purchase by the end user against defects in materials and workmanship. YSI 58 probes and cables are warranted for one year from date of purchase by the end user against defects in material and workmanship.
  • Page 28 AUTHORIZED U.S. SERVICE CENTERS For information on the nearest authorized service center contact: YSI Technical Support • 1725 Brannum Lane • Yellow Springs, Ohio • 45387 Phone: (800) 765-4974 (US) • +1 (937) 767-7241 • Email: environmental@ysi.com www.ysi.com YSI Incorporated...
  • Page 29 YSI Incorporated YSI 58 DO Meter...
  • Page 30 We will contact the sender for instructions as to the disposition of the equipment. 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 31 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 YSI 58 DO Meter...

  • Page 32: Appendix Ageneral Specifications

    + 0.5% of reading, + 2 least significant digits (in the 0.01 mg/L mode) Recorder Output: Voltage: 0 to 1 volt, full scale Accuracy: + 0.4 % of full scale, + 1 least significant digit (in the 0.01 mg/L mode) Minimum Load Impedance: 50 K OHM YSI Incorporated YSI 58 DO Meter...
  • Page 33 10 seconds at a low constant temperature of 30°C with the 5775 membrane. DO response and low temperature and low DO is typically 90% in 30 seconds. YSI 5776 High Sensitivity membranes may be used to improve response at low temperature and DO concentrations.

  • Page 34: Appendix Brequired 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, DC 20402, Stock No. 0004-000-00345-4. YSI Incorporated YSI 58 DO Meter...

  • Page 35: Appendix Caccessories And Replacement Parts

    APPENDIX C ACCESSORIES AND REPLACEMENT PARTS The following parts and accessories are available from YSI or any Franchise Dealer authorized by YSI. YSI Order Number Description 5905 Self-Stirring BOD Bottle Probe 5750 Non-Stirring BOD Bottle Probe 5740 –10 Detachable leads for use with the 5739 probe only. Comes in 10, 25, 50, 100, 150, 200 feet lengths.

  • Page 36: Appendix Dunit Conversion Chart

    Feet Meters Multiply by 0.3048 Meters Feet Multiply by 3.2808399 Degrees Celsius Degrees Fahrenheit (9/5 C)+32 Degrees Fahrenheit Degrees Celsius 5/9 ( F-32) Milligrams per liter (mg/l) Parts per million (ppm) Multiply by 1 YSI Incorporated YSI 58 DO Meter...

  • Page 37: Appendix Eoxygen Solubility Table

    9.09 8.62 8.17 7.75 7.35 6.96 21.0 8.92 8.46 8.02 7.61 7.21 6.84 22.0 8.74 8.30 7.87 7.47 7.09 6.72 23.0 8.58 8.14 7.73 7.34 6.96 6.61 24.0 8.42 7.99 7.59 7.21 6.84 6.50 YSI Incorporated YSI 58 DO Meter...
  • Page 38 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 YSI 58 DO Meter...

  • Page 39: Appendix Fcalibration Values Table

    7401 2256 22.44 76.0 7749 2362 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 YSI Incorporated YSI 58 DO Meter...
  • Page 40 1700/1725 Brannum Lane Yellow Springs, Ohio 45387 USA (800) 765-4974 (US), +1 (937) 767-7241 FAX: (937) 767-9353 Website: www.ysi.com Email: environmental@ysi.com ITEM # 069387 - Web DRW # A58020K January 1999...

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