<ul><li><p>26197-18</p><p>BODTrak </p><p>INSTRUMENT MANUAL</p><p> Hach Company, 1995 - 1998. All rights reserved. Printed in the U.S.A. ar/lr 12-8-95 1edRev. 5, 7/98</p></li><li><p>ii</p></li><li><p>CERTIFICATION</p><p>Hach Company certifies this instrument was tested thoroughly, inspected and found to meet its published specifications when it was shipped from the factory.</p><p>The Model BODTrak hto the following instrum</p><p>FCC Part 15, Stest records by ICompanyCanadian InterRegulation, ICEby Intellistor, ceEN 55011/CISPEMC: Supportincompliance by HEN 50082-1 (ImSupporting test rcompliance by HIEC 801-2 and EIEC 801-3 and EIEC 801-4 and EEN 61000-4-5 (S</p><p>RADIO FREQUENCThis digital apparatusradio noise emissions fInterference RegulationCommunications.</p><p>Le prsent appareil nuradiolectriques dpassnumriques de la classbrouillage radioelctriqCommunications du Caiii</p><p>as been tested and is certified as indicated entation standards:</p><p>ub-Part B, Class A Limits: Supporting ntellistor, certified compliance by Hach </p><p>ference-Causing Equipment S-003, Class A: Supporting test records </p><p>rtified compliance by Hach Company R 11(EMI) B Limits per 89/336/EEC g test records by Intellistor, certified ach Companymunity) per 89/336/EEC EMC: ecords by Hach Company, certified ach Company. Standards include:N 61000-4-2 (ESD)N V50140 (RF &amp; EM Field)N 61000-4-4 (Fast Transient)urge)</p><p>Y INTERFERENCE does not exceed the Class A Limits for rom digital apparatus set out in the Radio s of the Canadian Department of </p><p>mrique n'met pas de bruits ant les limites applicables aux appareils </p><p> A prescrites dans le Rglement sur le ue dict par le ministre des nada.</p></li><li><p>This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept anyinterference that may c</p><p> Changes or modificatthe party responsib</p><p>authorit</p><p>Note: This equipment halimits for a Class A digitaThese limits are designedharmful interference wheenvironment. This equipmfrequency energy and, if ninstruction manual, may communications. Operatilikely to cause harmful inrequired to correct the inmust be used with this unlimits. Because this instrufrequency energy, interferoccur. If such interferencnecessary steps to correcreducing the interference</p><p> Disconnect power finstrument is the so</p><p> If the BODTrak is pwith which it is inte</p><p> Move the BODTrakinterference.</p><p> Reposition the receinterference.</p><p> Try combinations oiv</p><p> interference received, including ause undesired operation.</p><p>WARNINGions to this unit not expressly approved by le for compliance could void the user's y to operate the equipment.</p><p>s been tested and found to comply with the l device, pursuant to Part 15 of the FCC Rules. to provide reasonable protection against n the equipment is operated in a commercial ent generates, uses, and can radiate radio ot installed and used in accordance with the </p><p>cause harmful interference to radio on of this equipment in a residential area is terference, in which case the user will be terference at his own expense. Shielded cables it to ensure compliance with the Class A FCC ment operates on and generates radio ence to radio and television reception may </p><p>e does occur, the operator should take the t the interference. The following techniques of problems are easily applied.</p><p>rom the BODTrak instrument to verify the urce of the interference.lugged into the same outlet as the device rfering, try another outlet. away from the device receiving the </p><p>iving antenna for the device receiving the </p><p>f the above.</p></li><li><p>CERTIFICATION ....................................................................iii</p><p>SPECIFICATIONS .................................................................vii</p><p>SAFETY .................................................................................... ix</p><p>OPERATION ...........</p><p>SECTION 1 INTROD1.1 Before Operat1.2 Unpacking the1.3 Applying Pow1.4 The BOD Tes</p><p>SECTION 2 INSTRU2.1 Principles of O</p><p>2.1.1 Oxygen T2.1.2 Pressure 2.1.3 Removin</p><p>2.2 Key Functions2.3 Setting the Clo2.4 RS232 Interfa</p><p>2.4.1 Hardwar2.4.2 Comman2.4.3 Downloa</p><p>SECTION 3 THE BO3.1 BODTrak Tes3.2 Interpreting T</p><p>3.2.1 Bottle Le3.2.2 Time Lag3.2.3 High Oxy3.2.4 Nitrificat</p><p>3.3 Accuracy Che</p><p>SECTION 4 SPECIA4.1 Range and Vo4.2 Sample Diluti</p><p>4.2.1 When Ox4.2.2 Preparing</p><p>4.3 Sample Seedin</p><p>TABLE OF CONTENTSv</p><p>.................................................................. 1</p><p>UCTION ................................................ 3ing the BODTrak Instrument ................... 3 BODTrak Instrument ............................. 3er.............................................................. 4t ................................................................ 4</p><p>MENT OPERATION ............................ 7peration................................................... 7ransfer to Sample ................................... 7</p><p>Sensor Function ....................................... 7g Carbon Dioxide .................................... 7................................................................. 8ck .......................................................... 10</p><p>ce............................................................ 11e Configuration....................................... 11ds............................................................ 12ding and Printing Test Results............... 16</p><p>D TEST ................................................ 19t Procedure ............................................. 19est Results .............................................. 26ak ........................................................... 26.............................................................. 27gen Demand.......................................... 27</p><p>ion .......................................................... 27ck ........................................................... 28</p><p>L CONSIDERATIONS ....................... 31lume Selection ....................................... 31ons .......................................................... 31ygen Demand Exceeds 700 mg/L ......... 31 Several Identical Samples.................... 32g ............................................................ 32</p></li><li><p>4.3.1 Determining BOD of Seed ................................... 324.3.2 Determining BOD of Sample............................... 334.3.3 Variations in Initial Bacterial Populations ........... 33</p><p>4.4 Sample Temperature..................................................... 344.4.1 Other BO</p><p>4.5 Industrial Was4.5.1 Chlorine4.5.2 Other To4.5.3 Seed Acc</p><p>4.6 pH Effect ......4.7 Supersaturatio</p><p>SECTION 5 MAINTE5.1 Cleaning the B</p><p>5.1.1 Sample B5.1.2 Stir Bars</p><p>SECTION 6 TROUB6.1 Adjusting the </p><p>GENERAL INFORMPARTS &amp; ACCESSORHOW TO ORDER ....REPAIR SERVICE ...WARRANTY ............INDEX ......................</p><p>TABLE OF CONTENTS, continuedvi</p><p>D Test Temperatures ............................ 34tes .......................................................... 34................................................................ 34xic Materials .......................................... 35limatization ........................................... 35................................................................ 36n............................................................. 36</p><p>NANCE ............................................... 37ODTrak Instrument .............................. 37ottles ..................................................... 37</p><p> and Seal Cups........................................ 37</p><p>LESHOOTING..................................... 39Calibration ............................................. 39</p><p>ATION................................................. 41IES ....................................................... 43</p><p>................................................................ 45</p><p>................................................................ 47</p><p>................................................................ 48</p><p>................................................................ 49</p></li><li><p>vii</p><p>SPECIFICATIONS</p><p>Range: Selectable, 0-35, 0-70, 0-350, and 0-700 mg/L</p><p>Dimensions: 33 x 30.5 x 12.7 cm (13 x 12 x 5 inches)External Power Supply: Input115/230 VAC, 50/60 Hz</p><p>Output20.5 VRMSUL, CSA, and TUV approved</p><p>Capacity: Six 473-mL bottles</p><p>Shipping weight: 9 pounds</p><p>Operating temperature: 20 C (68 F)Storage temperature: Below 40 C (104 F)</p></li><li><p>viii</p></li><li><p>Before attempting to unpack, set up, or operate this instrument, please read this entire manual. Pay particular attention to all warnings, cautions and notes. Failure to do so could result in serious injury to the operator or damage to the equipment.Use of Hazard InformIf multiple hazards exigreatest hazard shall be</p><p>Indicates an imminentavoided will result in d</p><p>Indicates a potentiallydeath or serious injury</p><p>Indicates a potentiallyminor or moderate inj</p><p>Informatio</p><p>This word</p><p>This wor</p><p>SAFETYix</p><p>ationst, the signal word corresponding to the used.</p><p>DANGERly hazardous situation which, if not eath or serious injury.</p><p>WARNING hazardous situation that could result in or serious damage to equipment.</p><p>CAUTION hazardous situation that may result in ury.</p><p>NOTEn that requires special emphasis.</p><p>SHALL is understood to be mandatory.</p><p>SHOULDd is understood to be advisory.</p></li><li><p>x</p></li><li><p>WARNINGHandling chemical samples, standards, and reagents can be dangerous. Review the necessary Material Safety Data Sheets and become familiar with all safety procedures before handling any chemicals.</p><p>ADVERTNCIAA manipulao de amostras, padres e reagentes qumicos pode ser perigosa. Reveja as necessrias Fichas Tcnicas de Segurana do Material e familiarizese com os procedimentos de segurana antes de manipular quaisquer substncias qumicas.</p><p>ADVERTENCIALa manipulacin de muestras qumicas, patrones y reactivos puede ser peligrosa. Antes de manipular cualquier productor qumico, conviene leer las Fichas Tcnicas de Seguridad y familiarizarse con los procedimientos de sugeridad.</p><p>ATTENTIONLa manipulation des chantillons chimiques, talons et ractifs peut tre dangereuse. Lire les fiches de donnes de scurit des produits ncessaires et se familiariser avec toutes les procdures de scurit avant de manipuler tout produit chimique.</p><p>WARNUNGDa das Arbeiten mit chemikalischen Proben, Standards, Reagenzien und Abfllen mit Gefahren verbunden ist, empfiehlt die Hach Company dem Benutzer dieser Produkte dringend, sich vor der Arbeit mit sicheren Verfahrensweisen und dem richtigen Gebrauch der Chemikalien oder Biogefahrgut vertraut zu machen und alle entsprechenden Materialsicherheitsdatenbltter aufmerksam zu lesen.</p><p>1</p><p>OPERATION</p></li><li><p>2</p></li><li><p>SECTION 1 INTRODUCTION</p><p>1.1 Before Operating the BODTrak InstrumentRead this entire manual before attempting to unpack, set up, or operate the BODTrak instrument. Read all labels and tags attached to the instruminformation requiring sWARNING.</p><p>Hach Company certifietested and inspected anspecifications when it w</p><p>1.2 Unpacking the BWhen removing the BOthe shipping containershave occurred during shincludes the following </p><p> The BODTrak instr</p><p> Six Seal Cups</p><p>The BODTrak accessofollowing items:</p><p> Six amber sample b</p><p> Six magnetic stir ba</p><p> Polyethylene funne</p><p> Power supply swi</p><p> Stopcock grease</p><p> One package Nutrie</p><p> One package Lithiu</p><p> Power cords, 115 an</p><p>If any items are missin3</p><p>ent, and pay particular attention to pecial emphasis labeled NOTE and </p><p>s that this instrument was thoroughly d found to meet its published as shipped from the factory.</p><p>ODTrak InstrumentDTrak instrument and accessories from </p><p>, inspect each item for damage that may ipment. The BODTrak shipping container </p><p>items:</p><p>ument</p><p>ry shipping container includes the </p><p>ottles</p><p>rs</p><p>l</p><p>tchable between 115V or 230V</p><p>nt Buffer Solution Pillows</p><p>m Hydroxide Powder Pillows </p><p>d 230 V</p><p>g or damaged, please contact the Hach </p></li><li><p>Customer Service Department in Loveland, Colorado. Do not return the instrument without prior authorization. In the United States, call 1-800-227-4224. Outside the United States, contact your nearest Hach deal</p><p>1.3 Applying PowerA UL/CSA approved 1style plug and a 230 VaContinental European pInstrument. The plug sIEC Universal Connecswitch, located on the bwhen shipped. If 230 p230V position. </p><p>1.4 The BOD TestBiochemical Oxygen D(68 F) within a controfive days, seven days, oanalysis or protocol. Thconsumed by bacteria oThe test is used to meatreatment plants and totreatment.</p><p>Figure 1 BODTrak 4</p><p>er.</p><p>15 Vac power cord with a NEMA 5-15P c Harmonized power cord with a lug are supplied with the BODTrak </p><p>upplies AC power to the Power Supply tor (see Figure 1). The Power Supply ottom of the Power Supply, is set at 115V ower is required, move the switch to the </p><p>emand (BOD) is a test conducted at 20 C lled environment. The test duration can be r up to 90 days, depending upon the e test measures the amount of oxygen xidizing organic matter in a water sample. sure waste loadings at wastewater evaluate the efficiency of wastewater </p><p>Power Supply and Side Panel Controls</p></li><li><p>BOD test results help determine general oxygen uptake patterns. This allows operators to estimate plant operating efficiency and determine proper treatment procedures. </p><p>The BODTrak method BOD. It makes complethe BODTrak instrumeoxygen consumed by a</p><p>Advantages to using thmethod are listed below</p><p> Minimal sample pre</p><p> Reduced total testinunnecessary).</p><p> The BODTrak test i</p><p> The sample is stirreconditions. The BO21% oxygen above replenishes dissolveBODTrak results sienvironment. The doxygen to the sampoxygen depletion, s</p><p> The BOD rate can bsample. Pressure chare displayed graphan LCD. The systemover the selected pe</p><p>NOTE: You can either mscroll back (using the arrsee the final BOD value. Idata points to collect exapoints when doing the 5.25</p><p>is an easy and direct method of measuring x chemical analysis unnecessary because nt takes a physical measurement of the test sample. </p><p>e BODTrak method over the dilution :</p><p>paration time.</p><p>g time (titrations and dilutions are </p><p>s easy to monitor.</p><p>d constantly and maintained under natural DTrak has an initial head space containing the water sample. Continuous stirring d oxygen to the sample. This makes the </p><p>milar to occurrences found in a natural ilution method supplies no additional le; this causes a higher percentage of ometimes as much as 89 percent.</p><p>e observed daily without disturbing the anges within the closed BODTrak system ically in milligrams per liter (mg/L) on supplies 480 evenly spaced data points </p><p>riod (5.25, 7, or 10.5 days).anually stop the test at 5.0 or 10.0 days, or ow keys) to 5.0 or 10.0 days on the display to f downloading, you can also disregard the last ctly 5.0 or 10.0 days (i.e., disregard the last 23 5 day test).</p></li><li><p> The BODTrak method continuously removes carbon dioxide (CO2) from the system so that the pressure difference observed is proportional to the amount of oxygen used.</p><p> Bubbles formed by are warmed to the ecompensates for thiequilibrium tempera6</p><p>degassing can cause errors when samples xperimental temperature. The BODTrak s occurrence by starting the test after the ture has been reached.</p></li><li><p>SECTION 2 INSTRUMENT OPERATION</p><p>2.1 Principles of Operation2.1.1 Oxygen Transfer to SampleA measured water sample i...</p></li></ul>