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Preparing the Meter

Section 2

Turn the instrument on by pressing and releasing the

ON/OFF

button on the front of the instrument.

The liquid crystal display (LCD) should come on. Allow a few seconds for the instrument to
complete its diagnostic routine. Notice that the instrument will display the specific cell constant of
the conductivity probe during this diagnostic routine. If the instrument does not operate, consult the
section entitled Troubleshooting.

You may also want to take the instrument into a dark room and with the instrument ON, hold down
the

LIGHT

button. The instrument backlight should illuminate the LCD so that the display can be

easily read.

2.4 CALIBRATION/STORAGE CHAMBER

Calibration/Storage
Chamber

The Model 85 has a convenient calibration storage
chamber built into the instruments' side. This chamber
provides an ideal storage area for the probe during
transport and extended non-use. If you look into the
chamber you should notice a small round sponge in the
bottom of the chamber. Carefully put 3 to 6 drops of
clean water into the sponge. Turn the instrument over
and allow any excess water to drain out of the chamber.
The wet sponge creates a 100% water saturated air
environment for the probe, which is ideal for dissolved
oxygen calibration.

2.5 HAND STRAP

The hand strap is designed to allow comfortable operation of the Model 85 with minimum effort. If
the hand strap is adjusted correctly, it is unlikely that the instrument will be easily dropped or
bumped from your hand. See figure on previous page.

To adjust the hand strap on the back of the meter, unsnap the vinyl cover and pull the two Velcro
strips apart. Place your hand between the meter and the strap and adjust the strap length so that your
hand is snugly held in place. Press the two Velcro strips back together and snap the vinyl cover back
into place.

2.6 THE METER CASE

The meter case is sealed at the factory and is not intended to be opened, except by authorized service
technicians. Do not attempt to separate the two halves of the meter case as this may damage the
instrument, break the waterproof seal, and will void the manufacturer's warranty.

YSI, Incorporated

Model 85

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Содержание 85

Страница 1: ...ations Manual for YSI 85 Appendix D Pontchartrain Conservancy Standard Operating Procedures Metairie Louisiana Pontchartrain Conservancy 3501 N Causeway Blvd Suite 220 Metairie Louisiana 70002 504 836 2235 ...

Страница 2: ...YSI Model 85 Handheld Oxygen Conductivity Salinity mg L C and Temperature System Operations Manual ...

Страница 3: ...ECTION 6 Advanced Conductivity Setup 15 6 1 Changing the Temperature Coefficient 15 6 2 Changing the Reference Temperature 16 6 3 Changing from Autoranging to Manual Ranging 16 SECTION 7 Making Measurements 17 7 1 Turning the Instrument On 17 7 2 The Measurement Modes of the Model 85 17 7 3 Autoranging and Range Searching 18 7 4 The Backlight 18 SECTION 8 Saving Data 21 8 1 Saving Data to Memory 2...

Страница 4: ... Oxygen Probe Precautions 31 SECTION 12 Troubleshooting 33 SECTION 13 Warranty And Repair 35 SECTION 14 Accessories And Replacement Parts 40 APPENDIX A Specifications 45 APPENDIX B Required Notice 47 APPENDIX C Temperature Correction Data 51 APPENDIX D Conversion Chart 53 APPENDIX E Oxygen Solubility Table 52 APPENDIX F Calibration Values Table 54 ...

Страница 5: ...on about the conductivity cell constant and function of the instrument circuitry The system simultaneously displays temperature in C along with one of the following parameters dissolved oxygen in either mg L milligrams per liter or air saturation conductivity temperature compensated conductivity in µS cm or mS cm and salinity in parts per thousand ppt The system requires only a single calibration ...

Страница 6: ...Introduction Section 1 YSI Incorporated Model 85 2 ...

Страница 7: ...Card and return it to YSI This will record your purchase of this quality instrument in our computer system Once your purchase is recorded you will receive prompt efficient service in the event any part of your YSI Model 85 should ever need repair and we will be able to quickly verify the warranty period 2 3 BATTERIES There are a few things you must do to prepare your YSI Model 85 for use First loc...

Страница 8: ... required There is a small label inside each of the two battery chamber sleeves These labels illustrate the correct way to install the batteries into each sleeve of the battery chamber NOTE It is very important that the batteries be installed ONLY as illustrated The instrument will not function and may be damaged if the batteries are installed incorrectly ...

Страница 9: ...bottom of the chamber Carefully put 3 to 6 drops of clean water into the sponge Turn the instrument over and allow any excess water to drain out of the chamber The wet sponge creates a 100 water saturated air environment for the probe which is ideal for dissolved oxygen calibration 2 5 HAND STRAP The hand strap is designed to allow comfortable operation of the Model 85 with minimum effort If the h...

Страница 10: ...Preparing the Meter Section 2 YSI Incorporated Model 85 6 ...

Страница 11: ...85 dissolved oxygen probe 1 Unscrew and remove the probe sensor guard 2 Unscrew and remove the old membrane cap 3 Thoroughly rinse the sensor tip with distilled water 4 Prepare the electrolyte according to the directions on the KCl solution bottle 5 Hold the membrane cap and fill it at least 1 2 full with the electrolyte solution 6 Screw the membrane cap onto the probe moderately tight A small amo...

Страница 12: ...Preparing the Probe Section 3 YSI Incorporated Model 85 8 ...

Страница 13: ...YSI Incorporated Model 85 9 SECTION 4 OVERVIEW OF OPERATION The following diagram is an overview of the operation of the Model 85 See the following sections for details of operation ...

Страница 14: ...Overview of Operation Section 4 YSI Incorporated Model 85 10 ...

Страница 15: ...r 4 The LCD will prompt you to enter the local altitude in hundreds of feet Use the arrow keys to increase or decrease the altitude When the proper altitude appears on the LCD press the ENTER button once EXAMPLE Entering the number 12 here indicates 1200 feet 5 The Model 85 should now display CAL in the lower left of the display the calibration value should be displayed in the lower right of the d...

Страница 16: ...r calibration at a temperature as close to 25 C as possible This will minimize any temperature compensation error Follow these steps to perform an accurate calibration of the YSI Model 85 1 Turn the instrument on and allow it to complete its self test procedure 2 Select a calibration solution that is most similar to the sample you will be measuring For sea water choose a 50 mS cm conductivity stan...

Страница 17: ...xact value of the calibration solution being used the instrument will make the appropriate compensation for temperature variation from 25 C press the ENTER button once The word SAVE will flash across the display for a second indicating that the calibration has been accepted The YSI Model 85 is designed to retain its last conductivity calibration permanently Therefore there is no need to calibrate ...

Страница 18: ...Calibration Section 5 YSI Incorporated Model 85 14 ...

Страница 19: ...reference temperature and or temperature coefficient Therefore unless you are certain that your application requires a change to one or both of these criteria do not modify the default reference temperature 25o C or the default temperature coefficient 1 91 6 1 CHANGING THE TEMPERATURE COEFFICIENT Follow these steps to modify the temperature coefficient of the Model 85 1 Turn the instrument on and ...

Страница 20: ...G FROM AUTORANGING TO MANUAL RANGING If your application is easier to perform using a manual range that you select the YSI Model 85 allows you to turn off the default autoranging feature While you are making conductivity or temperature compensated conductivity measurements simply press and release the UP ARROW button Each additional press of the UP ARROW button will cycle the Model 85 to a differe...

Страница 21: ...oxygen in percent of saturation Dissolved Oxygen mg L A measurement of oxygen in mg L Conductivity A measurement of the conductive material in the liquid sample without regard to temperature Specific Conductance Also known as temperature compensated conductivity which automatically adjusts the reading to a calculated value which would have been read if the sample had been at 25o C or some other re...

Страница 22: ...ion within the specifications of the instrument all you need to do to get the most accurate reading is to put the probe in the sample This feature makes the Model 85 as simple as possible to operate When you first place the Model 85 probe into a sample or calibration solution and again when you first remove the probe the instrument will go into a range search mode that may take as long as 5 second...

Страница 23: ...Making Measurements Section 7 YSI Incorporated Model 85 19 ...

Страница 24: ...Making Measurements Section 7 YSI Incorporated Model 85 20 ...

Страница 25: ... power down until a button is pushed Once you have acknowledged the memory is full any subsequent saved data will begin overwriting existing data starting with site 1 8 2 RECALLING STORED DATA 1 To put the Model 85 into the RECALL mode depress the MODE button repeatedly until rcl is displayed on the screen along with the site ID number in the lower right corner see figure 1 2 Depress the ENTER but...

Страница 26: ...D 1 Site ID 2 Site ID 3 If the UP ARROW button was pressed the Model 85 would display Site ID 2 Site ID 4 Site ID 5 8 3 ERASING STORED DATA 1 To erase the data that is stored into the Model 85 s memory depress the MODE button repeatedly until the Model 85 displays ErAS on the screen see figure 2 2 Depress and hold the DOWN ARROW and ENTER buttons simultaneously for approximately 5 seconds 3 The Mo...

Страница 27: ...es Any one of the foaming acid tile cleaners such as Dow Chemical Bathroom Cleaner will clean the cell adequately When a stronger cleaning preparation is required use a solution of 1 1 isopropyl alcohol and 1 N HCl Remove the cell from the cleaning solution 2 Use the nylon brush supplied to dislodge any contaminants from inside the electrode chamber 3 Repeat steps one and two until the cell is com...

Страница 28: ...Maintenance Section 9 YSI Incorporated Model 85 24 ...

Страница 29: ...s followed Solutions with conductivity s of 1 00 10 0 50 0 and 100 0 mS cm which have been prepared in accordance with recommendation 56 1981 of the Organisation Internationale de Métrologie Légale OIML are available from YSI The instrument output is in µS cm or mS cm for both conductivity and specific conductance The multiplication of cell constant times conductance is carried out automatically b...

Страница 30: ...78 results in values which are unitless since the measurements are carried out in reference to the conductivity of standard seawater at 15 C However the unitless salinity values are very close to those determined by the previously used method where the mass of dissolved salts in a given mass of water parts per thousand was reported Hence the designation ppt is reported by the instrument to provide...

Страница 31: ...riations in membrane temperature coefficient Type 3 errors are related to the operator s ability to determine the conditions at the time of calibration If calibration is performed against more accurately known conditions type 3 errors are appropriately reduced The sample calculations that follow are for a near extreme set of conditions TYPE 1 ERRORS A Meter linearity error 1 of full scale reading ...

Страница 32: ...on is performed at less than 100 humidity The error varies with the temperature as follows TEMPERATURE ERROR 0o C 0 02 mg l 10o C 0 05 mg l 20o C 0 12 mg l 30o C 0 27 mg l 40o C 0 68 mg l APPROXIMATING THE ERROR It is unlikely that the actual error in any measurement will be the maximum possible error A better error approximation is obtained using a root mean squared r m s calculation r m s error ...

Страница 33: ...ells are calibrated to within one percent of the stated cell constant at a single point We consider these products to be usefully linear over most instrument ranges The cell constant can be calibrated to 0 35 accuracy with YSI conductivity calibrator solutions Temperature Error 1 maximum The solution temperature error is the product of the temperature coefficient and the temperature offset from 25...

Страница 34: ...nge but will contribute the most error and be the most difficult to eliminate when operating in the lowest ranges The noise may be either line conducted or radiated or both and may require grounding shielding or both Galvanic and Miscellaneous Effects In addition to the error sources described above there is another class of contributors that can be ignored for all but the most meticulous of labor...

Страница 35: ...ainless steel epoxy polyetherimide and the polyurethane cable covering 5 For correct probe operation the gold cathode must always be bright If it is tarnished which can result from contact with certain gases or plated with silver the gold surface must be restored To restore the cathode you may either return the instrument to the factory or clean it using the YSI 5238 probe reconditioning kit Never...

Страница 36: ...Discussion of Measurement Errors Section 11 YSI Incorporated Model 85 32 ...

Страница 37: ...tion is required B Cell is contaminated C Tempco is set incorrectly D Reference temperature incorrect E Readings are or are not temperature compensated A See Calibration Section B See Maintenance Section C See Advanced Setup Section D See Advanced Setup Section E See Making Measurements Section 7 LCD displays LO BAT Main display flashes off A Batteries are low or damaged A Replace batteries 8 Main...

Страница 38: ...isplay reads ra A System has failed its RAM test check procedure A Turn instrument OFF and back ON again B Return the system for service pg 26 14 Main display reads Err Secondary display reads ro A System has failed its ROM test check procedure A Turn instrument OFF and back ON again B Return the system for service pg 26 15 Secondary display reads rEr A Temperature jumper is set to F and reading i...

Страница 39: ...eriod or at least 90 days from date of repair or replacement Limitation of Warranty This Warranty does not apply to any YSI product damage or failure caused by i failure to install operate or use the product in accordance with YSI s written instructions ii abuse or misuse of the product iii failure to maintain the product in accordance with YSI s written instructions or standard industry procedure...

Страница 40: ...el 85 36 AUTHORIZED U S SERVICE CENTERS Please visit www ysi com or contact YSI Technical Support for the nearest authorized service center YSI Incorporated Technical Support Phone 1 937 767 7241 800 897 4151 Fax 937 767 1058 Email environmental ysi com ...

Страница 41: ...s 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 1 In a manner appropriate to each device decontaminate all exposed surfaces including any containers 70 isopropyl alcohol or a solution of 1 4 cup bleach t...

Страница 42: ...d packing material 4 Use a large carton preferably the original and surround the product completely with packing material 5 Insure for the replacement value of the product Cleaning Certificate Organization Department Address City State Zip Country Phone Model No of Device Lot Number Contaminant if known Cleaning Agent s used Radioactive Decontamination Certified Answer only if there has been radio...

Страница 43: ...Warranty and Repair Section 13 YSI Incorporated Model 85 39 ...

Страница 44: ...ctivity Calibration Solution 1 000 µ cm 8 pints YSI 3168 Conductivity Calibration Solution 10 000 µ cm 8 pints YSI 3169 Conductivity Calibration Solution 50 000 µ cm 8 pints YSI 5520 Carrying Case YSI 118510 Replacement Probe Cable Assembly 10 feet YSI 118522 Replacement Probe Cable Assembly 25 feet YSI 118527 Replacement Probe Cable Assembly 50 feet YSI 118519 Replacement Probe and Cable Assembly...

Страница 45: ...Accessories and Replacements Section 14 YSI Incorporated Model 85 41 ...

Страница 46: ...tion from each new set of batteries Water Tightness Meets or exceeds IP65 standards Extensive testing of the YSI Model 85 indicates the following typical performance Measurement Range Resolution Accuracy Conductivity 0 to 499 9 µS cm 0 1 µS cm 5 FS 0 to 4999 µS cm 1 0 µS cm 5 FS 0 to 49 99 mS cm 01 mS cm 5 FS 0 to 200 0 mS cm 0 1 mS cm 5 FS Salinity 0 to 80 ppt 1 ppt 2 or 0 1 ppt Temperature 5 to ...

Страница 47: ...Specifications Appendix A YSI Incorporated Model 85 43 ...

Страница 48: ...15 38 1 96 37 5 16 04 1 98 40 16 70 1 99 45 18 05 2 02 50 19 43 2 04 Concentration 1 x 10 2 mole liter Concentration 1 x 10 3 mole liter C mS cm C to 25 C C mS cm C to 25 C 0 0 773 1 81 0 0 080 1 84 5 0 892 1 84 5 0 092 1 88 10 1 015 1 87 10 0 105 1 92 15 1 143 1 90 15 0 119 1 96 20 1 275 1 93 20 0 133 1 99 25 1 412 1 96 25 0 147 2 02 30 1 553 1 99 30 0 162 2 05 35 1 697 2 02 35 0 178 2 07 37 5 1 ...

Страница 49: ...liter C mS cm C to 25 C C mS cm C to 25 C 0 5 77 1 83 0 0 632 1 87 5 6 65 1 88 5 0 731 1 92 10 7 58 1 92 10 0 836 1 97 15 8 57 1 96 15 0 948 2 01 20 9 60 1 99 20 1 064 2 05 25 10 66 2 02 25 1 186 2 09 30 11 75 2 04 30 1 312 2 12 35 12 86 2 06 35 1 442 2 16 37 5 13 42 2 07 37 5 1 508 2 17 40 13 99 2 08 40 1 575 2 19 45 15 14 2 10 45 1 711 2 21 50 16 30 2 12 50 1 850 2 24 Concentration 1 x 10 3 mole...

Страница 50: ...0 961 2 04 20 0 101 2 25 25 1 070 2 08 25 0 114 2 28 30 1 183 2 12 30 0 127 2 31 35 1 301 2 16 35 0 140 2 32 37 5 1 362 2 18 37 5 0 147 2 32 40 1 423 2 20 40 0 154 2 31 45 1 549 2 24 45 0 166 2 29 50 1 680 2 28 50 0 178 2 25 D Potassium Nitrate KNO3 Concentration 1 x 10 1 mole liter Concentration 1 x 10 2 mole liter C mS cm C to 25 C C mS cm C to 25 C 0 6 68 1 78 0 0 756 1 77 5 7 71 1 79 5 0 868 1...

Страница 51: ... 08 45 18 12 2 09 50 19 45 2 09 Concentration 1 x 10 2 mole liter Concentration 1 x 10 3 mole liter C mS cm C to 25 C C mS cm C to 25 C 0 0 764 1 84 0 0 078 1 88 5 0 889 1 86 5 0 092 1 90 10 1 015 1 88 10 0 105 1 91 15 1 144 1 91 15 0 119 1 93 20 1 277 1 94 20 0 133 1 95 25 1 414 1 97 25 0 148 1 98 30 1 557 2 02 30 0 162 2 01 35 1 706 2 06 35 0 178 2 04 37 5 1 782 2 08 37 5 0 186 2 06 40 1 860 2 1...

Страница 52: ...off and on the user is encouraged to try to correct the interference by one or more of the following measures re orient the receiving antenna relocate the computer with respect to the receiver move the computer away from the receiver plug the computer into a different outlet so that the computer and receiver are on different branch circuits If necessary the user should consult the dealer or an exp...

Страница 53: ...Required Notice Appendix C YSI Incorporated Model 85 49 ...

Страница 54: ...CHART TO CONVERT FROM TO EQUATION Feet Meters Multiply by 0 3048 Meters Feet Multiply by 3 2808399 Degrees Celsius Degrees Fahrenheit 9 5 o C 32 Degrees Fahrenheit Degrees Celsius 5 9 o F 32 Milligrams per liter mg l Parts per million ppm Multiply by 1 ...

Страница 55: ...Conversion Chart Appendix D YSI Incorporated Model 85 51 ...

Страница 56: ...46 12 66 11 91 11 20 10 53 9 90 4 0 13 11 12 34 11 61 10 92 10 27 9 66 5 0 12 77 12 02 11 32 10 66 10 03 9 44 6 0 12 45 11 73 11 05 10 40 9 80 9 23 7 0 12 14 11 44 10 78 10 16 9 58 9 02 8 0 11 84 11 17 10 53 9 93 9 36 8 83 9 0 11 56 10 91 10 29 9 71 9 16 8 64 10 0 11 29 10 66 10 06 9 49 8 96 8 45 11 0 11 03 10 42 9 84 9 29 8 77 8 28 12 0 10 78 10 18 9 62 9 09 8 59 8 11 13 0 10 54 9 96 9 42 8 90 8 ...

Страница 57: ...2 0 7 31 6 96 6 62 6 31 6 01 5 72 33 0 7 18 6 84 6 52 6 21 5 91 5 63 34 0 7 07 6 73 6 42 6 11 5 82 5 55 35 0 6 95 6 62 6 31 6 02 5 73 5 46 36 0 6 84 3 52 6 22 5 93 5 65 5 38 37 0 6 73 6 42 6 12 5 84 5 56 5 31 38 0 6 62 6 32 6 03 5 75 5 48 5 23 39 0 6 52 6 22 5 98 5 66 5 40 5 15 40 0 6 41 6 12 5 84 5 58 5 32 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...

Страница 58: ... 519 94 27 83 707 94 2 1995 608 93 27 52 699 93 2 2290 698 92 27 24 692 92 2 2587 789 91 26 93 684 91 2 2887 880 90 26 61 676 90 2 3190 972 89 26 34 669 89 2 3496 1066 88 26 02 661 88 2 3804 1160 87 25 75 654 87 1 4115 1254 86 25 43 646 86 1 4430 1350 85 25 12 638 85 1 4747 1447 84 24 84 631 84 1 5067 1544 83 24 53 623 83 1 5391 1643 82 24 25 616 82 1 5717 1743 81 23 94 608 81 1 6047 1843 80 23 62...

Страница 59: ...Calibration Values Table Appendix F YSI Incorporated Model 85 55 ...

Страница 60: ...ITEM 038503 DRW A38503 Web Revision E Web November 1998 1700 1725 Brannum Lane Yellow Springs Ohio 45387 1 937 767 7241 800 765 4974 US FAX 937 767 9353 E mail environmental YSI com Website www YSI com ...

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