Hach BODTrak Instrument Manual Download Page 17 | Manualshive

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Hach BODTrak Instrument Manual Download Page 17

6

•

The BODTrak method continuously removes carbon dioxide
(CO

2

) from the system so that the pressure difference

observed is proportional to the amount of oxygen used.

•

Bubbles formed by degassing can cause errors when samples
are warmed to the experimental temperature. The BODTrak
compensates for this occurrence by starting the test after the
equilibrium temperature has been reached.

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Summary of Contents for BODTrak

Page 1: ...400 688 9809 www mamots com 0431 85178766...

Page 2: ...26197 18 BODTrak INSTRUMENT MANUAL Hach Company 1995 1998 All rights reserved Printed in the U S A ar lr 12 8 95 1ed Rev 5 7 98 400 688 9809 www mamots com 0431 85178766...

Page 3: ...ii 400 688 9809 www mamots com 0431 85178766...

Page 4: ...or certified compliance by Hach Company EN 50082 1 Immunity per 89 336 EEC EMC Supporting test records by Hach Company certified compliance by Hach Company Standards include IEC 801 2 and EN 61000 4 2...

Page 5: ...y cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the in...

Page 6: ...ng the Clock 10 2 4 RS232 Interface 11 2 4 1 Hardware Configuration 11 2 4 2 Commands 12 2 4 3 Downloading and Printing Test Results 16 SECTION 3 THE BOD TEST 19 3 1 BODTrak Test Procedure 19 3 2 Inte...

Page 7: ...Toxic Materials 35 4 5 3 Seed Acclimatization 35 4 6 pH Effect 36 4 7 Supersaturation 36 SECTION 5 MAINTENANCE 37 5 1 Cleaning the BODTrak Instrument 37 5 1 1 Sample Bottles 37 5 1 2 Stir Bars and Se...

Page 8: ...5 x 12 7 cm 13 x 12 x 5 inches External Power Supply Input 115 230 VAC 50 60 Hz Output 20 5 VRMS UL CSA and TUV approved Capacity Six 473 mL bottles Shipping weight 9 pounds Operating temperature 20...

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Page 10: ...hazard shall be used DANGER Indicates an imminently hazardous situation which if not avoided will result in death or serious injury WARNING Indicates a potentially hazardous situation that could resul...

Page 11: ...x 400 688 9809 www mamots com 0431 85178766...

Page 12: ...nviene leer las Fichas T cnicas de Seguridad y familiarizarse con los procedimientos de sugeridad ATTENTION La manipulation des chantillons chimiques talons et r actifs peut tre dangereuse Lire les fi...

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Page 14: ...the BODTrak Instrument When removing the BODTrak instrument and accessories from the shipping containers inspect each item for damage that may have occurred during shipment The BODTrak shipping conta...

Page 15: ...wer Supply switch located on the bottom of the Power Supply is set at 115V when shipped If 230 power is required move the switch to the 230V position 1 4 The BOD Test Biochemical Oxygen Demand BOD is...

Page 16: ...ter sample Continuous stirring replenishes dissolved oxygen to the sample This makes the BODTrak results similar to occurrences found in a natural environment The dilution method supplies no additiona...

Page 17: ...served is proportional to the amount of oxygen used Bubbles formed by degassing can cause errors when samples are warmed to the experimental temperature The BODTrak compensates for this occurrence by...

Page 18: ...natural conditions 2 1 2 Pressure Sensor Function The BODTrak is sealed to prevent external atmospheric pressure changes from affecting the BOD reading Pressure sensors monitor air pressure within th...

Page 19: ...ough six and are located in the center of the instrument control panel Scrolling Keys The display shows a graph of BOD values on the vertical axis and time in days on the horizontal axis During operat...

Page 20: ...selection and exit the menu 5 Hold down the ON key A menu for selecting a BOD scale is displayed 6 Press the left or right key to select the desired scale This also initializes the current channel cl...

Page 21: ...he channel stops The BOD curve is retained and can be accessed until another test is started on the channel If the test length is changed all channels are cleared CLR and data are erased Once ended a...

Page 22: ...age 4 Connect the 9 pin D connector of a computer interface cable to the Serial I O port on the instrument Connect the opposite end of this straight through cable to the computer Serial I O port Com 1...

Page 23: ...more Table 2 Wiring Cable from BODTrak to Computer BODTrak 9 pin Connector Socket Computer 9 pin Connector Socket Pin Signal Name Pin Signal Name 1 DCD 1 DCD 2 TXD 2 RXD 3 RXD 3 TXD 4 DSR 4 DTR 5 GND...

Page 24: ...characters before the final carriage return and line feed General Conventions Commands preceded by S set conditions and are often followed by a single numeric parameter Commands preceded by G are que...

Page 25: ...month to the 1 or 2 digit value xx SDxx Sets the current date to the 1 or 2 digit value xx Shxx Sets the current hour to the 1 or 2 digit value xx Smxx Sets the current minute to the 1 or 2 digit valu...

Page 26: ...fter receiving the carriage return which ends the command Once started the data stream can not be interrupted S Sets the analyzer to demo mode where simulated BOD data are generated over several minut...

Page 27: ...scroll bars Use function arrow and control keys for Windows 399 buffer lines NOTE Be sure to check inbound and outbound in Terminal Preferences to establish the PC BODTrak connection Then return to Se...

Page 28: ...m is indicated by a message such as Test Run to Completion and a dollar symbol If small negative BOD values are observed at the beginning of a test see SECTION 6 TROUBLESHOOTING BOD Log for Ch 1 Statu...

Page 29: ...Q 570 printer by pressing and holding the appropriate channel number for several seconds The instrument will send a copy of the graphical display as well as a truncated data stream 127 data points Thi...

Page 30: ...o cuando manipule materiales muestras y desechos Use gafas de seguridad y guantes de caucho para evitar enfermedad o infecci n ATTENTION Suivre attentivement les techniques de laboratoire lors de la m...

Page 31: ...to a BODTrak sample bottle see Table 5 See section 4 2 Sample Dilutions for more information on BOD range selection 3 Place a 3 8 cm 1 inch magnetic stir bar in each sample bottle Table 5 Selection of...

Page 32: ...4 isoptional Ifsimulation of original samplecharacteristicsis required donotaddtheBOD NutrientBuffer 5 Apply Stopcock Grease to the seal lip of each bottle and to the top of each seal cup 6 Place a se...

Page 33: ...niken beachten 7 Using the funnel add the contents of one Lithium Hydroxide Powder Pillow to each seal cup Do not allow lithium hydroxide particles to fall into the sample If this occurs discard the s...

Page 34: ...channel until the stir bar is rotating properly 12 To select a test duration simultaneously press and hold the left and the right arrow keys until the time menu appears Press the CHANNEL 6 key to act...

Page 35: ...ally 14 Press the ON key A menu for selecting the BOD range will be displayed 15 For 0 350 mg L range press the right key For 0 700 mg L press the key a second time For 0 35 mg L range press the left...

Page 36: ...will change from RUN to END 17 Read the BOD results directly from the BODTrak display by pressing the key corresponding to each sample Note See section 2 4 3 Downloading and Printing TestResultsforin...

Page 37: ...gen demand or nitrification These potential problems are discussed in detail in the next four sections 3 2 1 Bottle Leak A leak between the bottle cap and seal cup may cause readings similar to those...

Page 38: ...ies of BOD tests using the same sample but different volumes or dilution ratios to select an appropriate BOD range Generally effluent normally is in the 0 70 mg L range while influent is in the 0 700...

Page 39: ...ermedad o infecci n ATTENTION Suivre attentivement les techniques de laboratoire lors de la manipulation du mat riel des chantillons et des d chets Toujours porter des lunettes de s curit et des gants...

Page 40: ...A 10 by volume of seed in solution will result see section 4 3 Sample Seeding 5 Follow the general procedure for the BOD test using the 0 350 mg L BOD range and a 5 day test period 6 Also perform a fu...

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Page 42: ...OD Nutrient Buffer Pillow to each bottle Do not add the BOD Nutrient Buffer Pillow if close simulation of original sample characteristics is required 4 2 1 When Oxygen Demand Exceeds 700 mg L When the...

Page 43: ...of Seed Certain types of BOD samples do not contain sufficient bacteria to oxidize the organic matter present in the sample Many industrial discharges are of this type Some sewage treatment plant eff...

Page 44: ...mL Low seed concentrations are more critical than those that are too high They delay the start of oxidation and cause low BOD results Use the trial and error method to determine the optimum concentrat...

Page 45: ...cate that the five day 20 C value can be obtained in two and one half days at 35 C Middlebrooks presents nomographs for converting BOD tests to temperatures other than 20 C 4 5 Industrial Wastes Indus...

Page 46: ...concentrations of these and other materials see the Hach Water Analysis Handbook Dilute the sample with distilled water to eliminate the effect of these materials The correct BOD is obtained when two...

Page 47: ...taining 10 of the waste material in question 4 Repeat steps 1 3 increasing the addition of waste material by 10 Stop the procedure when 100 waste material has been reached 4 6 pH Effect Low BOD test r...

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Page 50: ...its 3 Residues create a BOD so be sure to remove all detergents by rinsing the bottles several times with tap water and finally with distilled or demineralized water 5 1 2 Stir Bars and Seal Cups 1 Ri...

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Page 52: ...current reading Reading 3 To change from one channel to the next press the number for the next desired channel Problem Suggestion Incomplete data set Clear buffer Negative data points Check temperatu...

Page 53: ...eral times until the reading value approaches zero The value will fluctuate slightly from zero 7 To change the calibration factor press the left key to decrease the value and press the right key to in...

Page 54: ...mpany customer service is an important part of every product we make With that in mind we have compiled the following information for your convenience GENERAL INFORMATION 400 688 9809 www mamots com 0...

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Page 56: ...ask erlenmeyer 500 mL 505 49 Flask volumetric 1000 mL 547 53 Funnel analytical 65 mm 1083 97 Incubator undercounter Model 205 120V 26162 00 Incubator undercounter Model 205 240V 26162 02 Incubator Ref...

Page 57: ...ck tube 75g 562 75 Lithium Hydroxide Powder Pillows 100 pkg 14163 69 Nitrification Inhibitor 35 g 2533 35 Polyseed Inoculum pkg 50 24712 00 Potassium Iodide Solution 100 g L 500 mL 12289 49 Potassium...

Page 58: ...orado 80539 U S A By Telex 160840 Hach Loveland By FAX 970 669 2932 Hach Loveland Information Required Hach account number if available Billing address Shipping address Your name and phone number Purc...

Page 59: ...s e de Namur 1 B 5150 Floriffoux Namur Belgium Telephone 32 8l 44 71 71 FAX 32 81 44 13 00 In Canada Hach Sales and Service Canada Ltd 1313 Border Street Unit 34 Winnipeg Manitoba R3H 0X4 Telephone 20...

Page 60: ...eg Manitoba R3H 0X4 800 665 7635 Canada only Telephone 204 632 5598 FAX 204 694 5134 In Latin America the Caribbean the Far East the Indian Subcontinent Africa except Mediterranean Africa or Pacific B...

Page 61: ...soon as possible always within two weeks of receipt The toll free number is 800 227 4224 RETURN OF ITEMS Authorization must be obtained from Hach Company before returning items for any reason For cred...

Page 62: ...mmand summary 14 commands 12 communication software 11 computer 16 computer commands 11 12 computer interface 11 control keys 8 control panel 8 current time 14 cursor 9 curve 26 D data bits 11 data fl...

Page 63: ...mmands 13 R range 24 31 RS232 11 S sample dilution 27 32 sample volume 20 scale 9 scrolling keys 8 seal cup 26 seed 27 29 Serial I O 11 Serial I O cable 11 software 11 specifications vii 3 standard sa...

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