YSI PRO20 User Manual
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YSI PRO20 User Manual

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USER MANUAL
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  • Page 1 P R O 2 0 USER MANUAL English Français Español Deutsch...
  • Page 2 Item # 605597 Rev B Drawing # A605597 October 2008 ©2008 YSI Incorporated. The YSI logo is a registered trademark of YSI Incorporated. Teflon is a registered trademark of E. I. du Pont de Nemours and Company.

  • Page 3: Table Of Contents

    C O N T E N T S Warranty .....................1 Introduction....................2 Getting Started ....................2 Initial Inspection................2 Battery Installation................2 Keypad....................3 Connecting the Sensor and Cable .............4 Membrane Installation ..............7 Backlight.....................7 Powering Off ..................7 Run Screen ..................7 Navigation ..................8 First Power On ...................9 System Setup Menu ..................10 DO Local%..................10 Last Digit Suppression (LDS)............11...
  • Page 4 Calibration ....................17 Temperature..................17 Barometer..................17 Dissolved Oxygen................18 Salinity Compensation Calibration ..........21 Taking Measurements ................22 Saving and Viewing data................22 Saving Data..................22 Viewing and Erasing Saved Data – Data mode ......23 Principles of Operation ................25 Care, Maintenance, and Storage ..............26 General Maintenance...............26 Sensor Maintenance.................28 Sensor Storage ..................32 Troubleshooting..................33 Specifications.....................35...

  • Page 5: Warranty

    W A R R A N T Y The YSI Pro20 Instrument is warranted for three (3) years from date of purchase by the end user against defects in materials and workmanship, exclusive of batteries and any damaged caused by defective batteries. Pro20 cables are warranted for two (2) years from date of purchase by the end user against defects in material and workmanship.

  • Page 6: Introduction

    I N T R O D U C T I O N Professional Thank you for purchasing the YSI Pro20, an instrument from the YSI Series product family. The Pro20 features an impact resistant and waterproof (IP- 67) case, backlit display, user-selectable sensor options, internal barometer, and a rugged, rubber over-mold case.

  • Page 7: Keypad

    5) Place the battery cover on the back of the instrument and tighten the four screws. Do NOT over-tighten. Figure 1, Pro20 with battery cover removed. Note battery symbols indicating polarities. The waterproof instrument case is sealed at the factory and is not to be opened, except by authorized service technicians.

  • Page 8: Connecting The Sensor And Cable

    Number Description Calibrate Press and hold for 3 seconds to calibrate. Initiates One Touch Calibration. Opens Calibrate menu from the run screen if One Touch Calibration is disabled. Up Arrow Use to navigate through menus, to navigate through box options at the bottom of the run screen, and to increase numeric inputs.
  • Page 9 The Pro20 has two compatible sensors for use with a field cable: Polarographic – This sensor has a black sensor body and is engraved with the model number 2003. Polarographic will be abbreviated Polaro in the instrument. Galvanic – This sensor has a grey sensor body and is engraved with the model number 2002.
  • Page 10 CONNECTING THE CABLE The Pro20 is designed for field and laboratory use. It is compatible with two different cable options: 1) The field rugged cable is available in standard lengths of 1, 4, 10, 20, 30, and 100 meters with special lengths available between 30 and 100 meters. This cable has a built in temperature sensor and includes a port for the dissolved oxygen sensor.

  • Page 11: Membrane Installation

    Press the power/backlight key to turn the instrument on. The instrument will run through a self test and briefly display a splash screen with system information before displaying the main run screen (Figure 5). The first time the Pro20 is...

  • Page 12: Navigation

    Figure 5, example of main run screen with Save highlighted. NAVIGATION The up and down arrow keys allow you to navigate through the functions of the Pro20. NAVIGATING IN THE RUN SCREEN When in the run screen, the up and down arrow keys will move the highlighted box along the bottom options.

  • Page 13: First Power On

    Description of run screen box functions from left to right: Option Description Barometer reading Highlight and press enter to calibrate the barometer Salinity compensation Highlight and press enter to adjust salinity value compensation value Highlight and press enter to save current data to SAVE memory Highlight and press enter to view and/or erase saved...

  • Page 14: System Setup Menu

    DO Local% allows for localized dissolved oxygen measurements. This sets the DO% calibration value to 100% regardless of the altitude or barometric pressure. When DO Local% is enabled, the Pro20 will factor in the barometric pressure on each measurement. For example, if the barometric pressure changes, the DO %L reading would remain constant in air-saturated water or in water-saturated air.

  • Page 15: Last Digit Suppression (Lds)

    . When enabled, there will be an ‘X’ in the box next to Audio. When Audio is enabled, the Pro20 will beep twice to indicate stability when Auto Stable is enabled. The instrument will also beep when a key is pressed. When Audio is disabled, the Pro20 will not beep.

  • Page 16: Sensor Type

    If using a ProBOD sensor/cable assembly, the sensor type should be set to polarographic. The Pro20 has two compatible sensors for use with a field cable: Polarographic – This sensor has a black sensor body and is engraved with the model number 2003.

  • Page 17: Membrane Type

    MEMBRANE TYPE Membrane Type sets the type of membrane used on the dissolved oxygen sensor; either 1.25 PE (Yellow) or 2.0 PE (blue). Use the up or down arrow keys to highlight Membrane Type and press enter to open the membrane submenu. Highlight the membrane type corresponding to the membrane installed on the sensor and press enter to confirm.

  • Page 18: Auto Stable

    AUTO STABLE Auto Stable utilizes preset values to indicate when a reading is stable. The preset values are adjustable in the System Setup menu. The user can input a % change in dissolved oxygen readings (0.0 to 1.9) over ‘x’ amount of time in seconds (3-19). Highlight Auto Stable and press enter to expand the submenu.

  • Page 19: Temperature Units

    TEMPERATURE UNITS Highlight Temperature Units and press enter to open a submenu that will allow you to change the temperature units displayed in the run screen. Highlight the desired unit (Celsius or Fahrenheit) and press enter to enable. The enabled temperature unit will have an ‘X’...

  • Page 20: Resetting The System Setup Menu To Factory Default

    RESETTING THE SYSTEM SETUP MENU TO FACTORY DEFAULT To reset the Pro20 settings to factory default, press the down arrow key until the Reset - box is highlighted, then press enter. The instrument will ask you to confirm the reset. Highlight Yes and press enter to continue with the reset or highlight No and press enter to cancel the reset.

  • Page 21: Exiting The System Setup Menu

    BAROMETER The barometer in the Pro20 is calibrated at the factory. The barometer reading must be accurate to ensure accurate % calibrations and DO readings. If your barometer requires an adjustment, use the up or down arrow keys to highlight the barometer box on the run screen, then press enter.

  • Page 22: Dissolved Oxygen

    DISSOLVED OXYGEN The Pro20 can be easily calibrated with the press of one key by enabling One Touch Cal in the System Setup menu and following the One Touch Calibration procedure. Ensure the barometer is reading accurately before performing a One Touch Calibration, DO %, or DO Local% calibration.
  • Page 23 Press and hold the Calibrate key for 3 seconds. Highlight % and press enter. The Pro20 will display the current DO% and temperature readings along with the % calibration value. The % calibration value is based on the barometer reading.
  • Page 24 Press and hold the Calibrate key for 3 seconds. %Local will be automatically highlight, press enter. The Pro20 will display the current DO% and temperature readings along with the % calibration value. The % calibration value will always be 100% for DO Local%.

  • Page 25: Salinity Compensation Calibration

    The salinity compensation value entered in the Pro20 should be the salinity value of the water you are testing. To adjust the salinity compensation value, use the up or down arrow keys to highlight the salinity box on the run screen, and then press enter (Figure 10).

  • Page 26: Taking Measurements

    S A V I N G A N D V I E W I N G D A T A The Pro20 can store 50 data sets in non-volatile memory for later viewing. A data set includes the values currently on the display, i.e. temperature in Celsius or Fahrenheit and dissolved oxygen in % and/or mg/L or ppm.

  • Page 27: Viewing And Erasing Saved Data - Data Mode

    6.58 mg/L 95.9 24.2 °C Data set 01 saved 729.7 35.0 mmHg DATA SAVE Figure 11, Data set saved The instrument will display ‘Memory Full’ if all 50 data sets have been saved and you attempt to save another data set. VIEWING AND ERASING SAVED DATA –...

  • Page 28: Viewing Data

    15 records and number 12 is erased then 13 becomes 12, 14 becomes 13, and 15 becomes 14. The instrument will return to data mode after erasing one data set. Select Erase All Data Sets and press enter to clear the Pro20 memory and return to data mode.

  • Page 29: Principles Of Operation

    EXITING DATA MODE While in Data mode, press enter to access the bottom functions. Next, highlight the ESC-Exit box and press enter to return to the run screen. P R I N C I P L E S O F O P E R A T I O N The polarographic sensor consists of a silver body as the anode and a circular gold cathode embedded in the end.

  • Page 30: Care, Maintenance, And Storage

    C A R E , M A I N T E N A N C E , A N D S T O R A G E This section describes the proper procedures for care, maintenance and storage of the sensors. The goal is to maximize their lifetime and minimize down-time associated with improper sensor usage.
  • Page 31 Using alcohol on o-rings may cause a loss of elasticity and may promote cracking. Do not use a sharp object to remove the o-rings. Damage to the o- ring or the groove may result. Before re-installing the o-rings, make sure to use a clean workspace, clean hands, and avoid contact with anything that may leave fibers on the o-ring or grooves.

  • Page 32: Sensor Maintenance

    If any moisture is present, use compressed air to completely dry the connector or place directly in front of a steady flow of fresh air. If the connector is corroded, contact YSI Technical Support or the Authorized dealer where you purchased the instrument.
  • Page 33 Do not sand the electrode every membrane change as this is not routine maintenance. In fact, visually, the anode may appear tarnished and operate just fine. YSI recommends using the 400 grit wet/dry sanding disks after a membrane change if the sensor has difficulty stabilizing or calibrating.
  • Page 34 Rinse thoroughly and wipe the gold cathode with a wet paper towel before putting on a new membrane cap. If the cathode remains tarnished, contact YSI Technical Support or the Authorized dealer where you purchased the instrument. Silver Anode After extended use, a thick layer of Silver Chloride (AgCl) builds up on the silver anode reducing the sensitivity of the sensor.
  • Page 35 If this procedure is unsuccessful, as indicated by improper sensor performance, contact YSI Technical Support or the Authorized dealer where you purchased the instrument. Galvanic Sensors – Model # 605202 We recommend that the Sodium Chloride (NaCl) solution and the membrane cap be changed at least once every 60 days during regular use.

  • Page 36: Sensor Storage

    At the time the membrane cap is changed, YSI recommends that you rinse the anode (silver shaft of the sensor) with purified water and wipe with a clean paper towel. If white deposits are evident on the anode after cleaning, YSI recommends that you remove this material by sanding the anode with the sandpaper disk included in the membrane kit.

  • Page 37: Troubleshooting

    T R O U B L E S H O O T I N G ERROR MESSAGES Symptom Possible Solution 1) Verify barometer reading Instrument will not calibrate; instrument displays “Calibration 2) Verify correct sensor and membrane Over”, “Calibration Under”, or type selection in the System Setup “Unstable Reading”...
  • Page 38 Symptom Possible Solution 1) Verify correct sensor/membrane type Instrument readings are inaccurate. selection in the System Setup menu. 2) Verify calibration, barometer reading, and salinity settings are correct and recalibrate. 3) Verify accurate temperature readings. 4) Sample temperature is over 45 ºC, the temperature compensation range.

  • Page 39: Specifications

    1) Sample temperature is less than -5º C Temperature values display Over or or more than +55 C . Increase or Undr on run screen. decrease the sample temperature to bring within the allowable range. Return system for service. S P E C I F I C A T I O N S Parameter Range Resolution...

  • Page 40: Accessories/Part Numbers

    A C C E S S O R I E S / P A R T N U M B E R S Part Number Description 6050020 Pro20 60520-1, -4, -10, 1, 4, 10, 20, or 30-meter cable with temperature and a -20, or -30...

  • Page 41: Declaration Of Conformity

    D E C L A R A T I O N O F C O N F O R M I T Y YSI Incorporated Manufacturer: 1725 Brannum Lane Yellow Springs, Ohio 45387 Pro20 Product Name: Model Numbers: Pro20 (6050020) Instrument: 60520, 605780 Cables: 605202, 605203 Sensors: Conforms to the following: EMC Directive 2004/108/EC...

  • Page 42: Recycling

    R E C Y C L I N G YSI takes seriously the commitment to reducing our environmental footprint in our course of doing business. Even though materials reduction is the ultimate goal, we know there must be a concerted effort to responsibly deal with materials after they’ve served a long, productive life-cycle.

  • Page 43: Contact Information

    800-897-4151. When returning a product for service, include the Product Return form with cleaning certification. The form must be completely filled out for an YSI Service Center to accept the instrument for service. The Product Return form may be downloaded at www.ysi.com...

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