Hach-Lange BODTRACK II User Manual
DOC022.52.80363
BODTrak II
02/2013, Edition 1
User Manual
™
Table of Contents
Specifications..................................................................................................................................................................................5
General information.....................................................................................................................................................................5
Safety information..............................................................................................................................................................................5
Use of hazard information..................................................................................................................................................................6
Precautionary labels..........................................................................................................................................................................6
Certification........................................................................................................................................................................................6
Product overview...............................................................................................................................................................................7
Product components..........................................................................................................................................................................7
Installation.........................................................................................................................................................................................7
External connections..........................................................................................................................................................................7
Connect the RS232 interface.............................................................................................................................................................8
Bottle connections..............................................................................................................................................................................8
User interface..................................................................................................................................................................................8
Channel selection keys......................................................................................................................................................................9
Arrow keys.........................................................................................................................................................................................9
ON key...............................................................................................................................................................................................9
OFF key.............................................................................................................................................................................................9
Startup.................................................................................................................................................................................................9
Turn the instrument on.......................................................................................................................................................................9
Set the clock......................................................................................................................................................................................9
Standard operation....................................................................................................................................................................10
Download test results.......................................................................................................................................................................10
Import data.......................................................................................................................................................................................10
Data format......................................................................................................................................................................................10
Print test results...............................................................................................................................................................................11
BODTrak II™ procedures........................................................................................................................................................11
Procedure notes...............................................................................................................................................................................11
Simplified procedure........................................................................................................................................................................12
Hach GGA (glucose/glutamic acid) procedure.................................................................................................................................13
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Hach Standard Method procedure...................................................................................................................................................14
Completion steps for all procedures................................................................................................................................................15
Determination of results.........................................................................................................................................................17
Simplified sample results.................................................................................................................................................................17
Hach GGA (glucose/glutamic acid) results......................................................................................................................................17
Hach Standard Method results........................................................................................................................................................17
Typical curves...............................................................................................................................................................................17
Special considerations............................................................................................................................................................18
Sample dilution................................................................................................................................................................................18
Sample seeding...............................................................................................................................................................................18
Sample temperature........................................................................................................................................................................18
Toxic materials.................................................................................................................................................................................18
Chlorine............................................................................................................................................................................................19
pH effect...........................................................................................................................................................................................19
Supersaturation................................................................................................................................................................................19
Maintenance...................................................................................................................................................................................19
Clean the instrument........................................................................................................................................................................19
Clean the sample bottles.................................................................................................................................................................19
Clean the stir bars and seal cups.....................................................................................................................................................19
Storage............................................................................................................................................................................................19
Troubleshooting..........................................................................................................................................................................20
Incorrect BOD curves.......................................................................................................................................................................20
High oxygen demand.......................................................................................................................................................................20
Nitrification.......................................................................................................................................................................................21
Excessive time lag...........................................................................................................................................................................21
Sample temperature........................................................................................................................................................................21
Bottle leak........................................................................................................................................................................................21
Replacement parts and accessories...............................................................................................................................21
Replacement parts...........................................................................................................................................................................21
Required reagents...........................................................................................................................................................................22
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Optional reagents.............................................................................................................................................................................22
Accessories......................................................................................................................................................................................22
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Table of Contents
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Specifications
Specifications are subject to change without notice.
Table 1 General Specifications
Specification Details
Operating
temperature
Altitude limit 2000 m (6500 ft)
Pollution degree 2
Installation
category
Storage/operating
humidity
Location Laboratory / Indoor
Protection class 2
Range Selectable, 0 to 35, 0 to 70, 0 to 350, 0 to 700 mg/L
Dimensions 28.9 x 26 x 9.8 cm (11.375 x 10.25 x 3.875 in.)
External power
supply
Capacity Six 492 mL bottles
Shipping weight 4 kg (8.8 lb)
Warranty 1 year
5 to 40 ºC (41 to 104 ºF)
II
Maximum relative humidity is 80% for temperatures up to
31 ºC (87.8 ºF), decreases linearly to 50% relative
humidity at 40 ºC (104 ºF)
Input: 100 to 240 VAC, 50/60 Hz, 1.5 A; Output: 24 VDC,
2.7 A, UL CSA and TUV approved.
Table 2 Method performance specifications
Specification Details
Precision Parameters:
• Standard: 150 mg/L each of glucose and glutamic acid
• Number of samples: 44
• Number of analysts: 1
• Number of BodTrak II instruments: 6
Results:
• Mean of 235 mg/L BOD
• Distribution: 11 mg/L or range of 224 to 246 mg/L BOD
• 95% confidence limit
Drift Less than 3 mg/L BOD in 5 days
Resolution 1 mg/L BOD
General information
In no event will the manufacturer be liable for direct, indirect, special,
incidental or consequential damages resulting from any defect or
omission in this manual. The manufacturer reserves the right to make
changes in this manual and the products it describes at any time, without
notice or obligation. Revised editions are found on the manufacturer’s
website.
Safety information
N O T I C E
The manufacturer is not responsible for any damages due to misapplication or
misuse of this product including, without limitation, direct, incidental and
consequential damages, and disclaims such damages to the full extent permitted
under applicable law. The user is solely responsible to identify critical application
risks and install appropriate mechanisms to protect processes during a possible
equipment malfunction.
Please read this entire manual before unpacking, setting up or operating
this equipment. Pay attention to all danger and caution statements.
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Failure to do so could result in serious injury to the operator or damage
to the equipment.
Make sure that the protection provided by this equipment is not impaired.
Do not use or install this equipment in any manner other than that
specified in this manual.
Use of hazard information
D A N G E R
Indicates a potentially or imminently hazardous situation which, if not avoided, will
result in death or serious injury.
Indicates a potentially or imminently hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a potentially hazardous situation that may result in minor or moderate
injury.
Indicates a situation which, if not avoided, may cause damage to the instrument.
Information that requires special emphasis.
W A R N I N G
C A U T I O N
N O T I C E
Precautionary labels
Read all labels and tags attached to the instrument. Personal injury or
damage to the instrument could occur if not observed. A symbol on the
instrument is referenced in the manual with a precautionary statement.
This symbol, if noted on the instrument, references the instruction
manual for operation and/or safety information.
Electrical equipment marked with this symbol may not be disposed of
in European public disposal systems after 12 August of 2005. In
conformity with European local and national regulations (EU Directive
2002/96/EC), European electrical equipment users must now return
old or end-of-life equipment to the Producer for disposal at no charge
to the user.
Note: For return for recycling, please contact the equipment producer or supplier
for instructions on how to return end-of-life equipment, producer-supplied
electrical accessories, and all auxiliary items for proper disposal.
Certification
Canadian Radio Interference-Causing Equipment Regulation,
IECS-003, Class A:
Supporting test records reside with the manufacturer.
This Class A digital apparatus meets all requirements of the Canadian
Interference-Causing Equipment Regulations.
Cet appareil numèrique de la classe A respecte toutes les exigences du
Rëglement sur le matériel brouilleur du Canada.
FCC Part 15, Class "A" Limits
Supporting test records reside with the manufacturer. The device
complies with Part 15 of the FCC Rules. Operation is subject to the
following conditions:
1. The equipment may not cause harmful interference.
2. The equipment must accept any interference received, including
interference that may cause undesired operation.
Changes or modifications to this equipment not expressly approved by
the party responsible for compliance could void the user's authority to
operate the equipment. 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
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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 their expense. The following
techniques can be used to reduce interference problems:
1. Disconnect the equipment from its power source to verify that it is or
is not the source of the interference.
2. If the equipment is connected to the same outlet as the device
experiencing interference, connect the equipment to a different
outlet.
3. Move the equipment away from the device receiving the interference.
4. Reposition the receiving antenna for the device receiving the
interference.
5. Try combinations of the above.
Product overview
Respirometric Biological Oxygen Demand (BOD) is a test that measures
the quantity of oxygen consumed by bacteria that oxidize organic matter
in a water sample. The test is used to measure waste loadings at
wastewater treatment plants and to examine the efficiency of wastewater
treatment.
The instrument is sealed to prevent external atmospheric pressure
changes in the test bottle. The pressure in the sample bottles is
monitored. Bacteria in the sample use oxygen when they consume
organic matter. This oxygen consumption causes the pressure in the
bottle head space to drop. The pressure drop correlates directly to BOD.
During a test period, stir bars mix the sample and cause oxygen to move
from the air in the bottle to the sample. This helps simulate natural
conditions.
Carbon dioxide is a result of the oxidation process and can interfere with
a measurement. The instrument continuously removes carbon dioxide
from the system so that the monitored pressure difference stays
proportional to the quantity of oxygen used. Pressure changes in the
closed system are shown graphically in milligrams per liter (mg/L) on a
liquid crystal display. The instrument gives 360 uniform data points over
the selected time period.
The instrument adjusts for any negative errors produced when heat is
applied to a sample. The instrument does not start the test until the
temperature gets to equilibrium.
Product components
Make sure that all components have been received. If any of these items
are missing or damaged, contact the manufacturer or a sales
representative immediately.
• BODTrak™ II instrument
• A UL/CSA approved 115 VAC power cord with a NEMA 5-15P style
plug
• A 230 VAC harmonized power cord with a continental European plug
• Power supply, auto-switching between 115 V and 230 V
• Seal cups (6x)
• BODTrak II amber sample bottles (6x)
• BODTrak II magnetic stir bars (6x)
• Spatula scoop
• Nutrient buffer solution pillows (1 pkg)
• Potassium hydroxide pellets (1 container)
Installation
External connections
Figure 1 shows the locations of the power switch and external
connections.
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