Hach BODTrak Manuel utilisateur

客服：400 688 9809

网址：www.mamots.com 电话：0431-85178766

26197-18

BODTrak™

INSTRUMENT MANUAL

Rev. 5, 7/98

客服：400 688 9809

网址：www.mamots.com 电话：0431-85178766

客服：400 688 9809

网址：www.mamots.com 电话：0431-85178766

iii

CERTIFICATION

Hach Company certifies this instrument was tested thoroughly,

inspected and found to meet its published specifications when it

was shipped from the factory.

The Model BODTrak has been tested and is certified as indicated

to the following instrumentation standards:

FCC Part 15, Sub-Part B, Class A Limits: Supporting

test records by Intellistor, certified compliance by Hach

Company

Canadian Interference-Causing Equipment

Regulation, ICES-003, Class A: Supporting test records

by Intellistor, certified compliance by Hach Company

EN 55011/CISPR 11(EMI) “B” Limits per 89/336/EEC

EMC: Supporting test records by Intellistor, 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 (ESD)

IEC 801-3 and EN V50140 (RF & EM Field)

IEC 801-4 and EN 61000-4-4 (Fast Transient)

EN 61000-4-5 (Surge)

RADIO FREQUENCY INTERFERENCE

“This digital apparatus does not exceed the Class A Limits for

radio noise emissions from digital apparatus set out in the Radio

Interference Regulations of the Canadian Department of

Communications.”

“Le présent appareil numérique n'émet pas de bruits

radioélectriques dépassant les limites applicables aux appareils

numériques de la class A prescrites dans le Règlement sur le

brouillage radioeléctrique édicté par le ministère des

Communications du Canada.”

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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 any interference received, including

interference that may cause undesired operation.

WARNING

Changes or modifications to this unit not expressly approved by

the party responsible for compliance could void the user's

authority to operate the equipment.

Note: This equipment has been tested and found to comply with the

limits for a Class A digital device, pursuant to Part 15 of the FCC Rules.

These limits are designed to provide reasonable protection against

harmful interference when the equipment is operated in a commercial

environment. This equipment generates, uses, and can radiate radio

frequency energy and, if not installed and used in accordance with the

instruction manual, may 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 interference at his own expense. Shielded cables

must be used with this unit to ensure compliance with the Class A FCC

limits. Because this instrument operates on and generates radio

frequency energy, interference to radio and television reception may

occur. If such interference does occur, the operator should take the

necessary steps to correct the interference. The following techniques of

reducing the interference problems are easily applied.

•Disconnect power from the BODTrak instrument to verify the

instrument is the source of the interference.

•If the BODTrak is plugged into the same outlet as the device

with which it is interfering, try another outlet.

•Move the BODTrak away from the device receiving the

interference.

•Reposition the receiving antenna for the device receiving the

interference.

•Try combinations of the above.

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CERTIFICATION ....................................................................iii

SPECIFICATIONS .................................................................vii

SAFETY ....................................................................................ix

OPERATION .............................................................................1

SECTION 1 INTRODUCTION................................................3

1.1 Before Operating the BODTrak Instrument...................3

1.2 Unpacking the BODTrak Instrument .............................3

1.3 Applying Power..............................................................4

1.4 The BOD Test ................................................................4

SECTION 2 INSTRUMENT OPERATION............................7

2.1 Principles of Operation...................................................7

2.1.1 Oxygen Transfer to Sample ...................................7

2.1.2 Pressure Sensor Function.......................................7

2.1.3 Removing Carbon Dioxide ....................................7

2.2 Key Functions.................................................................8

2.3 Setting 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 Interpreting Test Results ..............................................26

3.2.1 Bottle Leak...........................................................26

3.2.2 Time Lag..............................................................27

3.2.3 High Oxygen Demand..........................................27

3.2.4 Nitrification..........................................................27

3.3 Accuracy Check ...........................................................28

SECTION 4 SPECIAL CONSIDERATIONS .......................31

4.1 Range and Volume Selection.......................................31

4.2 Sample Dilutions..........................................................31

4.2.1 When Oxygen Demand Exceeds 700 mg/L.........31

4.2.2 Preparing Several Identical Samples....................32

4.3 Sample Seeding............................................................32

TABLE OF CONTENTS

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4.3.1 Determining BOD of Seed...................................32

4.3.2 Determining BOD of Sample...............................33

4.3.3 Variations in Initial Bacterial Populations...........33

4.4 Sample Temperature.....................................................34

4.4.1 Other BOD Test Temperatures ............................34

4.5 Industrial Wastes..........................................................34

4.5.1 Chlorine................................................................34

4.5.2 Other 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 Seal Cups........................................37

SECTION 6 TROUBLESHOOTING.....................................39

6.1 Adjusting the Calibration .............................................39

GENERAL INFORMATION................................................. 41

PARTS & ACCESSORIES .......................................................43

HOW TO ORDER ....................................................................45

REPAIR SERVICE ...................................................................47

WARRANTY ............................................................................48

INDEX ......................................................................................49

TABLE OF CONTENTS, continued

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vii

SPECIFICATIONS

Range: Selectable, 0-35, 0-70, 0-350, and 0-700 mg/L

Dimensions: 33 x 30.5 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 °C (68 °F)

Storage temperature: Below 40 °C (104 °F)

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viii

客服：400 688 9809

网址：www.mamots.com 电话：0431-85178766

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 Information

If multiple hazards exist, the signal word corresponding to the

greatest 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 result in

death or serious injury or serious damage to equipment.

CAUTION

Indicates a potentially hazardous situation that may result in

minor or moderate injury.

NOTE

Information that requires special emphasis.

SHALL

This word is understood to be mandatory.

SHOULD

This word is understood to be advisory.

SAFETY

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