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1. replacement process To remove the bonded cap from the electrode unscrew the cap firmly and carefully counter clockwise from the electrode see diagram below Discard the used cap Please Note The installation of a bonded cap causes the membrane to be tightly streched over the cathode Once a bonded cap is removed reinstallation is not possible as the membrane will no longer be properly streched over the cathode Rinse the old electrolyte solution from the Cathode and Anode before continuing Use the supplied Polishing Strips to clean polish shine and or remove scratches from the cathode Be sure to moisten the cloth before polishing the cathode Do not over polish the sensitive gold cathode Set the new replacement bonded cap on a flat surface Leave the cap in this position throughout the replacement process Fill the bonded cap with the electrolyte solution up to the bottom of the threads on the inside of the cap Tap the side of the bonded cap to help jar free any trapped air bubbles from the electrolyte solution Keeping the cap in a fixed position on a flat surface carefully insert the electrode into the new bonded cap by first dipping and removing the electrode several times from the cap With each dip push the electrode progressively deeper into the bonded cap Finally screw the electrode slowly onto the bonded cap clockwise until fully tightened The dipping and removal technique minimizes the introduction of air bub
2. 1 ppt part per i sins thousand the value cycles from 0 to 50 Exit Salinity Itis necessary to Compensation Press and release CAL RECALL button for 2 seconds press the On i SAL to enter Altitude Compensation Or CAL RECALL button Press and release Cal Button one more time to enter to save changes If measurement mode the unit times out no changes are saved og connie a er USONE Press CAL RECALL twice momentary Unit enters seconds if no button On Any or SAL Salinity Mode Press CAL RECALL for 2 seconds to is oresced reyens t0 enter Altitude Compensation Mode Displays Ald pr previous mode Enter Altitude Compensation Changing Altitude Momentary press of the MODE HOLD button each Compensation On Ald button press increases altitude by 1 000ft the value Exit Altitude Itis necessary to Compensation press the On Ald Momentary press CAL RECALL button to exit and CAL RECALL button save changes to save changes If the unit times out no changes are saved Press and hold the CAL RECALL button then momentarily press the ON OFF button Release the Change Temperature Off Units i Override Press CAL RECALL button momentary then Autopower Off On Any simultaneously press and hold the MODE HOLD and aaa aa eng ON OFF buttons for for 2 seconds Default Reset ma off Simultaneously press ON OFF CAL RECALL and mode MODE HOLD moment
3. HOLD and ON OFF buttons until off is displayed To restore the Auto Power Off Feature auto power OFF enable simply turn the meter off and on again using the ON OFF button Low Battery Indication When the battery voltage falls below the operating threshold BAT will appear on the display Refer to the Maintenance section for battery replacement information Storing Readings 1 Press the MODE HOLD button to store a reading The storage location number will be displayed on the lower display while the main display shows the stored reading The meter will enter the HOLD mode and the HOLD indicator will appear on the LCD 2 Press the MODE HOLD button again to exit the HOLD mode and return to normal operation The next time MODE HOLD is momentarily pressed another reading is stored and so on 3 If more than 25 readings are stored previously stored readings starting with reading number 1 are overwritten Recalling Stored Readings 1 Momentarily press the CAL RECALL button and then with in 4 seconds momentarily press the MODE HOLD The last stored data point location will be displayed 1 to 25 Each time the MODE HOLD button is momentarily pressed the next most recently stored data point will be displayed 2 After the last data point stored is displayed pressing the MODE HOLD button again returns the display to the beginning of the list 3 Pressing the CAL RECALL button at anytime stops the data retrieval proces
4. two small tabs 3 Replace the four 4 CR2032 batteries observing proper polarity 4 Replace the battery carrier reattach the battery compartment cap and tighten securely i ll You as the end user are legally bound EU Battery ordinance to return all used batteries disposal in the household garbage is prohibited You can hand over your used batteries accumulators at collection points in your community or wherever batteries accumulators are sold e Disposal Follow the valid legal stipulations in respect of the disposal of the device at the end of its lifecycle Electrode Replacement 1 2 To remove the electrode first turn the instrument OFF and then unscrew and remove the electrode retaining collar turn the collar counter clockwise to remove Gently rock the electrode from side to side pulling it away from the meter until it disconnects To attach an electrode align the positioning keys on the electrode and the main body housing and then carefully push the electrode into the meter socket until it is fully seated Tighten the electrode retaining collar firmly enough to seal the electrode with the meter 6 DO600 EU EN V7 0 8 10 DO Bonded Membrane Cap replacement Important Note Do not touch the membrane as skin oils will interfere with the oxygen permeability rate of the membrane Use caution when replacing the bonded cap 1 It is recommended that the electrode remain attached to the meter during this
5. User s Guide EXTECH INSTRUMENTS A FLIR COMPANY ExStik DO600 Dissolved Oxygen Meter Introduction Congratulations on your purchase of the ExStik DO600 dissolved oxygen temperature meter which simultaneously displays dissolved oxygen and temperature Units of measure are saturation mg l or ppm for dissolved oxygen and C or F for temperature Advanced features include Data Hold 25 points memory auto power off automatic temperature compensation salinity and altitude compensation This meter is shipped fully tested and calibrated and with proper use will provide years of reliable service Meter Description Front Panel Description 1 1 Battery compartment cover 2 LCD Display 3 MODE HOLD button 2 4 CAL RECALL button 5 ON OFF button 3 6 Electrode Retaining Collar 4 7 Dissolved Oxygen Sensor 5 8 Bonded Membrane Cap assembly 9 Membrane amp Cathode Note The Electrode storage cap is not shown 6 Electrode Bottom View 7 8 Cathode Membrane 9 LCD Display a RT stated 7 1 Bar graph display Ky To lt A 2 Measurement units 2 pot 3 Main display _ iig mor 2 4 Low Battery indicator 3 gt f n m I UT 5 Temperature display E tt EE il 6 Reading hold indicator ED BAT gt 7 ge 6 gt HoLD LILO LS F 2 DO600 EU EN V7 0 8 10 Operation Prepare the Electrode 1 The electrode is shipped dry and requires filling with the sup
6. arily dFLt will be displayed n a off mode 10 DO600 EU EN V7 0 8 10 Re order and Accessory Information ga _ Part Number Description DO600 ExStik II Dissolved Oxygen Meter DO605 Replacement Probe ExStik II Dissolved Oxygen Meter DO603 Membrane Kit for DO600 Contains 6 Membrane Caps 15 mL Filling Solution Polishing Paper EXO _ Extension Cable 3 feet 1 Meter amp Probe Weight EXO50 Extension Cable 16 feet 5 Meter amp Probe Weight Dosto ExStik II DO pH Conductivity Meter Kit Contains EC500 pH Conductivity Salinity TDS ExStik II Meter DO600 Dissolved Oxygen ExStik II Meter Single use pH buffer pouches 4 7 and 10pH Sample Cups with Cap Weighted Base for Sample Cups and Batteries all packed in a Carrying Case CA895 Small Soft Vinyl Pouch with Belt Loop for ExStik and ExStik II Copyright 2010 Extech Instruments Corporation All rights reserved including the right of reproduction in whole or in part in any form 11 DO600 EU EN V7 0 8 10
7. bles into the electrolyte solution Air bubbles in the electrolyte can compromise measurements During the tightening of the bonded cap excess electrolyte solution will leak out this is normal and desireable since it minimizes the introduction of air pockets Clean off the excess electrolyte before use Electrode BONDED CAP Anode ______ Cathode Bonded Ca Clockwise to tighten P Counter clockwise to loosen Air Vents 7 DO600 EU EN V7 0 8 10 Specifications Display 2000 count Dual function 3 1 2 digit LCD with Bargraph Display size 24 mm x 20 mm Sensor Polarographic type Membrane Bonded membrane cap with threaded fitting Operating Temp Range 0 to 50 C 32 to 122 F ATC Range 0 to 50 C 32 to 122 F Salinity Compensation 0 to 50 ppt in 1 ppt part per thousand increments Altitude compensation 0 to 20 000 ft in 1000 ft increments Measurement Storage 25 tagged numbered data sets with recall Battery Power Four 4 CR2032 button batteries Low Battery Indication BAT appears on the LCD Auto Power Off After 10 minutes of inactivity APO override available Dimensions Weight 36 x 173 x 41mm 1 4 x 6 8 x 1 6 110g 3 8 oz Measurement Range Resolution Accuracy Saturation 0 to 200 0 2 0 FS full scale Dissolved Oxygen 0 to 20 00 mg l 0 01 mg l 2 FS S RGER TA Non 0 to 20 00 ppm 0 01 ppm 2 FS TEK 32 to 122 F 0 1 F 0 to 99 F 1 8F 1 0 100 F 8 DO600 EU EN V7 0 8 10 Ap
8. d when Self Cal is shown in the display Salinity Compensation 1 2 With the unit ON momentarily press the CAL RECALL button twice in quick succession SAL is shown in the lower temperature display Momentary press the MODE HOLD button Each press of the MODE HOLD button increases the compensation by 1ppt part per thousand the available range is 0 to 50ppt Momentarily press the CAL RECALL button to save the compensation setting and return to the normal measurement mode 4 DO600 EU EN V7 0 8 10 Altitude Compensation 1 With the unit ON momentarily press the CAL RECALL button twice in quick succession SAL is shown in the lower temperature display 2 Press and hold CAL RECALL again for 2 seconds to enter the Altitude Mode Ald will be shown in the lower temperature display 3 The factory default value is sea level Each press of the MODE HOLD button increases the compensation by 1000ft The maximum value is 20 presses 20 000ft above sea level 4 Momentarily press the CAL RECALL button to save the compensation setting and return to the normal measurement mode Auto Power OFF Feature The auto power off feature automatically shuts the meter off 10 minutes after the most recent button press To disable this feature refer to the Disable Auto Power OFF section Disable Auto Power OFF Feature With the unit ON momentarily press the CAL RECALL button then quickly press and hold both the MODE
9. ectrode to the point that the sample liquid reaches the meter s electrode collar 5 Allow the meter time to settle to the final measurement value Note The larger the difference in temperature between the electrode and the solution the longer it will take for the reading to stabilize Stabilization time can vary from ten 10 seconds to five 5 minutes 3 DO600 EU EN V7 0 8 10 Calibration setae Calibration should be performed on a daily basis Turn the meter ON Press and hold the MODE HOLD button until is displayed on the LCD If the meter has not been used for seven 7 days or longer allow the electrode to fully polarize This may take 2 3 minutes Place the electrode cap onto the electrode The sponge contained in the cap should be moistened not soaked with DI distilled water or clean tap water Be sure that the electrode membrane is clean and dry or the calibration will be incorrect Never touch the membrane as skin oil will affect the electrode response Wait until the reading stabilizes then press and hold the CAL RECALL button until CAL is shown in the lower display The readings will blink 101 7 and SA will appear When the calibration is complete End will appear and then the meter will return to the normal measurement mode Note The SA will not appear if the calibration fails Optional zero oxygen calibration improves measurement accuracy for very low or very high DO measureme
10. fore a measurement can be made Turn On Diagnostics 2 When the meter is turned ON the LCD displays SELF and CAL while the meter runs a diagnostic routine 3 During this time the meter is recalling the User Calibration data performing self diagnostics amp initializing the circuitry 4 After this function is complete the meter proceeds to the normal measurement mode Measurements 1 Cover the electrode with the electrode cap The sponge contained in the cap should be moistened not soaked with DI distilled water or clean tap water 2 Pressing the ON OFF button turns the meter ON or OFF When turned ON the meter s display switches on and the Self Calibration utility runs see above The unit of measure selected when the meter was last turned OFF will remain on the display 3 If this is the first time the meter is powered up wait approx 3 minutes for the probe to polarize please disable auto power off Instructions for disabling auto power off are provided in a later section For more details please read the Startup Polarization Period paragraph earlier in this manual before continuing 4 Select the desired units of measure by pressing and holding the MODE HOLD button until the proper units are shown in the display Remove the electrode cover and place the electrode in the sample to be measured Stir the electrode in the sample to remove any trapped air bubbles from the membrane surface Do not submerse the el
11. nts Place the electrode in a zero oxygen calibration solution such as 5 sodium sulfite wait for stability and press the CAL RECALL button until CAL is shown in the in the lower display Stability in a zero solution may take many minutes depending on electrode history Note Sodium Sulfite can become deposited on the electrode and on the coined surface of the electrode retaining collar The presence of the Sodium Sulfite will negatively affect future DO measurements until such a time where ALL of it is removed from the electrode Measurement Units The meter can be set to measure saturation dissolved oxygen in mg l and dissolved oxygen in parts per million ppm To change the mode 1 Press and hold the MODE HOLD button for 2 seconds and the display will begin to scroll through the different units of measure saturation D O in mg l D O in ppm parts per million When the desired units are displayed release the MODE HOLD button and the unit will return to normal operating mode Note The HOLD function cannot be on when changing the measurement function If HOLD is displayed in the lower left corner of the display briefly press the MODE HOLD button to turn it off Temperature Units F C 1 2 3 With the unit OFF press and hold the CAL RECALL button With the CAL RECALL button depressed momentarily press the ON OFF button to turn the unit ON The CAL RECALL button can be release
12. pendices Troubleshooting Guide _ Symptom Possible Causes _ Action Unit will not power on Batteries not in place Replace Batteries Dead batteries Replace Batteries Battery polarity incorrect Reorient Replace Batteries BAT indicator shown on Batteries are weak Replace Batteries display Unstable Readings Insufficient electrolyte in Replace electrolyte and probe Air bubbles present membrane cap assembly when probe is inverted Electrolyte is depleted Readings drift down Insufficient stirring the probe Move probe in sample or consumes oxygen at the stir sample measuring surface requiring constant sample movement across membrane Slow Response Dirty or damaged membrane Replace electrolyte and membrane cap Electrode cannot be Depleted electrolyte Replace electrolyte and Calibrated Dirty or damaged membrane membrane cap Electrode cannot be Dirty probe Cathode is nota Clean cathode with calibrated after replacing shiny gold color cleaning paper the electrolyte and membrane cap Sample reading is frozen Unit is in HOLD mode Release HOLD Unit is locked momentarilly press Mode Hold button Remove batteries press ON OFF button replace batteries and restart 9 DO600 EU EN V7 0 8 10 Operational Matrix for the Model DO600 Function Power gt Mode Required Button Press Sequence Comments Re
13. plied electrolyte solution before use The membrane should be in place and does not need replacement Follow the procedure at the end of this guide for filling the bonded cap Powering the ExStik The ExStik uses four 4 CR2032 Lithium lon Batteries Press the ON OFF button to turn the meter on or off If the batteries are weak the BAT indicator appears on the LCD The auto power off feature shuts the ExStik off automatically after approximately 10 minutes of inactivity The auto power off feature may be temporarily disabled for convenience or for extended polarization time Startup Polarization Period When the ExStik is powered up for the first time the electrode requires polarization In order for this to occur a three minute approx polarization period must elapse before measurements can be made A special circuit is included in this meter which upon turn on maintains a very small biasing current to the electrode for a period of seven days This keeps the electrode polarized and enables the user to make immediate measurements within a 7 day period without waiting for the electrode to re polarize Each time the ExStik is turned on the polarization timer is reset and the 7 day polarization period is initiated A small asterisk at the bottom right corner of the display is used to indicate that the polarization timer circuit is active If the ExStik is not used for more than seven day a 3 minute waiting period is required be
14. s and returns the meter to the normal measurement mode Clearing Stored Readings 1 With the unit ON press and hold the ON OFF button for 4 seconds 2 When clr is shown in the main display the memory is cleared 5 DO600 EU EN V7 0 8 10 Measurement and Display Considerations The DO600 uses a polarographic sensor which consumes oxygen at the sensing surface This requires a constant movement of the sample across the membrane to maintain a constant dissolved oxygen level It is recommended that the probe be moved in the sample as the measurement is made or if in a laboratory environment the sample be stirred using a stir plate If the unit appears to be locked display frozen It is possible that the Data Hold mode has been inadvertently accessed by a press of the MODE HOLD button HOLD will be displayed in the bottom left of the LCD Simply press the MODE HOLD button again or turn the meter off and back on again lf the meter does latch up and no button presses revive it remove the batteries and restart For maximum accuracy allow sufficient time for the temperature of the probe to reach the temperature of the sample before taking a reading This will be indicated by a stable temperature reading on the display Maintenance Battery Replacement 1 Twist off the battery compartment cover 2 Holding the battery housing in place with a finger pull out the battery carrier using the
15. sulting Action Status Setting On Off Any Any Momentary press ofthe ON OFF button Water Saturated On Any Place Electrode in Calibration Cap Air Calibration Press amp hold CAL RECALL button for 2 seconds Zeo GAD a Ron Place Electrode in Zero Solution wait for stability oe Works MIN pie Press amp hold CAL RECALL button for 2 seconds removed Cal at zero current Stores and holds Any Momentary press of the MODE HOLD button reading HOLD displayed nnl Store Reading cline CLT Dy Dae ceed tsa Enter Memory i If no data is stored in Retrieval Momentary press of the Cal button followed by a memory End is On i Any i momentary press of the MODE HOLD button w in4 displayed briefly and seconds _ then returns to last i mode Soroll Stored On Memory Momentary press of the MODE HOLD button Readings L Regalo ele ea aa S Loe Exi Mormor On Memory Momentary press of the CAL RECALL Retrieval Recall Clear Stored Any Memory On Measure Press and hold the ON OFF button for 4 seconds clr is displayed Change Press and hold the MODE HOLD button for at least Measurement On Any two seconds the modes will scroll until the button is Mode O Ra ee eee a ie Enter Salinity Compensation i momentary in succes Changing Salinity Momentary press of the MODE HOLD button each Compensation On SAL button press increases the ratio by

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