Hanna Instruments HI 98186 User manual

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Dissolved Oxygen
BOD/OUR/SOUR
Meter
HI 98186
Instruction Manual
www.hannainst.com
HI 98186
Dissolved Oxygen Meter

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WARRANTYWARRANTY
WARRANTYWARRANTY
WARRANTY
Dear Customer,
Thank you for choosing a Hanna Instruments product.
Please read this instruction manual carefully before using the instrument.
This manual will provide you with the necessary information for correct use of
the instrument, as well as a precise idea of its versatility.
If you need additional technical information, do not hesitate to e-mail us at
[e-mail] or turn to the back cover for our worldwide contact list.
These instruments are in compliance with directives.
The HI 98186 instrument is guaranteed for two years against defects in
workmanship and materials when used for its intended purpose and maintained
according to instructions. Electrodes and probes are guaranteed for six months.
This warranty is limited to repair or replacement free of charge.
Damage due to accidents, misuse, tampering or lack of prescribed maintenance
is not covered.
If service is required, contact the dealer from whom you purchased the
instrument. If under warranty, report the model number, date of purchase,
serial number and the nature of the problem. If the repair is not covered by
the warranty, you will be notified of the charges incurred. If the instrument is
to be returned to Hanna Instruments, first obtain a Returned Goods Authori-
zation number from the Technical Service department and then send it with
shipping costs prepaid. When shipping any instrument, make sure it is
properly packed for complete protection.

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TABLE OF CONTENTSTABLE OF CONTENTS
TABLE OF CONTENTSTABLE OF CONTENTS
TABLE OF CONTENTS
WARRANTY ......................................................................................... 2
PRELIMINARY EXAMINATION ................................................................ 4
GENERAL DESCRIPTION ........................................................................ 4
FUNCTIONAL DESCRIPTION .................................................................. 6
SPECIFICATIONS.................................................................................. 8
PROBE FUNCTIONAL DESCRIPTION ....................................................... 9
PROBE CONNECTION AND PREPARATION............................................. 10
OPERATIONAL GUIDE......................................................................... 11
OUR MEASUREMENT ......................................................................... 21
SOUR MEASUREMENT ....................................................................... 24
TEMPERATURE MEASUREMENT ............................................................ 27
DO CALIBRATION PROCEDURE ............................................................ 27
GOOD LABORATORY PRACTICE (GLP) ................................................... 32
SETUP .............................................................................................. 33
LOGGING .......................................................................................... 45
AutoEnd ........................................................................................... 48
PRESSURE CALIBRATION.................................................................... 49
TEMPERATURE CALIBRATION .............................................................. 51
PC INTERFACE ................................................................................... 54
BATTERY RECHARGER/REPLACEMENT .................................................... 62
PROBE MAINTENANCE ....................................................................... 64
TROUBLESHOOTING GUIDE ................................................................ 65
ACCESSORIES .................................................................................... 66

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PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
PRELIMINARY EXAMINATION
The HI 98186 is a state of art, microprocessor based, dissolved oxygen
instrument with many automated and specific application features, designed
to provide laboratory results and accuracy under harsh industrial conditions.
All measurements are automatically compensated for temperature. Salinity
compensation in water allows direct determination of dissolved oxygen in
saline waters. With its internal barometer, the instrument is able to automati-
cally compensate for changes in barometric pressure so there is no need for
charts, altitude information or external barometric pressure information.
The instrument contains built-in application software for the calculation of
Biochemical Oxygen Demand (BOD), Oxygen Uptake Rate (OUR) and Specific
Oxygen Uptake Rate (SOUR).
HI 98186’s calibration has been greatly simplified when compared to other
dissolved oxygen instruments. It is provided with a series of new features which
add entirely new dimensions to the measurement of DO, by allowing the user
to dramatically improve the reliability of the measurement:
• One or two points automatic dissolved oxygen calibration.
• One point manual dissolved oxygen calibration using a value in milligrams
per liter or percent saturation entered by the user.
• One or two points user temperature calibration.
• Messages on the graphic LCD for an easy and accurate calibration.
• User-selectable “calibration time out” to remind when a new calibration is
necessary.
Remove the instrument from the packing material and examine it carefully to
make sure that no damage has occurred during shipping. If there is any
damage, notify your Dealer or the nearest Hanna Customer Service Center.
Each instrument is supplied with:
• HI 76407/4F Polarographic probe with built-in temperature sensors and
4 m (13.4”) cable
• HI 76407A Membrane cap (2 pcs)
• HI 7041S Electrolyte solution (30 mL)
• 4 x 1.2V AA, 1300 mAh Rechargeable Batteries (inside the instrument)
• HI 710042 Inductive Recharger with power adaptor
• Instruction Manual
• Rugged carrying case
Note: Save all packing material until you are sure that the instrument
functions correctly. All defective items must be returned in the original
packing with the supplied accessories.
GENERAL DESCRIPTIONGENERAL DESCRIPTION
GENERAL DESCRIPTIONGENERAL DESCRIPTION
GENERAL DESCRIPTION

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Moreover, the meter offers an extended temperature range from
–20 ºC to 120 ºC (–4 ºF to 248 ºF).
Other features include:
• Log on demand up to 400 samples.
• Auto Hold feature, to freeze first stable reading on the LCD.
• GLP feature, to view last calibration data.
• PC interface.
Hanna Instruments reserves the right to modify the design,
construction and appearance of its products without advance notice.

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FUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTION
FUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTION
FUNCTIONAL DESCRIPTION
1) Liquid Crystal Display (LCD).
2) F1, F2, F3 functional keys.
3) / keys to manually increase/decrease the parameters or to scroll the pa-
rameter list.
4) ESC key to leave current mode, exit calibration, setup, help, etc.
5) CAL key, to enter/exit calibration mode.
6) RCL key, to enter/exit view logged data mode.
7) SETUP key, to enter/exit SETUP mode.
8) ON/OFF key, to turn the instrument ON and OFF.
9) GLP key, to display Good Laboratory Practice information.
10) LIGHT key, to toggle display backlighting.
11) MODE key to change DO measuring unit when in DO measure screen, or to
toggle between standard and pressure in DO calibration.
12) RANGE key, to switch between DO, BOD, OUR AND SOUR.
13) Help key to enter/exit contextual help.
Front viewFront view
Front viewFront view
Front view

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Top viewTop view
Top viewTop view
Top view
DOUSB
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15
14) Electrode DIN connector.
15) USB connector.

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SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONS

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PROBE FUNCTIONAL DESCRIPTIONPROBE FUNCTIONAL DESCRIPTION
PROBE FUNCTIONAL DESCRIPTIONPROBE FUNCTIONAL DESCRIPTION
PROBE FUNCTIONAL DESCRIPTION
PROBE FUNCTIONAL DESCRIPTIONPROBE FUNCTIONAL DESCRIPTION
PROBE FUNCTIONAL DESCRIPTIONPROBE FUNCTIONAL DESCRIPTION
PROBE FUNCTIONAL DESCRIPTION
1. D.O. Probe
2. Protective Cap
3. Watertight Shielded Cable
4. Polypropylene Probe Body
5. Temperature Sensor
6. O-Ring Seal
7. Silver Chloride Anode
8. Platinum Cathode (sensor)
9. Oxygen Permeable Teflon®Membrane
10. Membrane Cap

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To take measurements, connect the D.O. probe to the meter securely by
aligning the pins with the socket located on the top of the meter, pushing the
plug in and tightening the threaded ring.
Probes shipped from Hanna Instruments
are dry. To hydrate the probe and prepare
it for use, connect it to the meter and
proceed as follows:
1. Remove the red and black plastic cap.
This cap is for shipping purposes and can
be thrown away.
2. Wet the sensor by soaking the bottom
2½ cm (1") of the probe in electrolyte
(HI 7041S) for 5 minutes.
3. Rinse the membrane cap (HI 76407A)
supplied in the kit with the meter) with
electrolyte solution while shaking it gently.
Refill with clean electrolyte solution.
4. Tap gently the sides of the membrane
cap with your finger tip to ensure that no
air bubbles are trapped. To avoid damag-
ing the membrane, do not tap it directly
on the bottom.
5. Make sure that the rubber O-ring sits
properly inside the membrane cap.
6. With the sensor facing down, slowly
screw the cap clockwise. Some electrolyte
will overflow.
When not in use and during polarization
(see PROBE CONDITIONING page 11), use the protective transparent cap
supplied in the kit with the meter.
PROBE CONNECTION AND PREPARATIONPROBE CONNECTION AND PREPARATION
PROBE CONNECTION AND PREPARATIONPROBE CONNECTION AND PREPARATION
PROBE CONNECTION AND PREPARATION