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Hanna Instruments HI 98186 Instruction Manual

Dissolved oxygen bod/our/sour meter
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Enlarged version
Instruction Manual
HI 98186

Dissolved Oxygen

BOD/OUR/SOUR
Meter
HI 98186
Dissolved Oxygen Meter
w w w. h a n n a i n s t . c o m
1

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Summary of Contents for Hanna Instruments HI 98186

  • Page 1: Dissolved Oxygen

    Instruction Manual HI 98186 Dissolved Oxygen BOD/OUR/SOUR Meter HI 98186 Dissolved Oxygen Meter w w w. h a n n a i n s t . c o m...

  • Page 2: Warranty

    W A R R A N T Y W A R R A N T Y 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.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS TABLE OF CONTENTS TABLE OF CONTENTS TABLE 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 .................

  • Page 4: Preliminary Examination

    GENERAL DESCRIPTION GENERAL DESCRIPTION GENERAL DESCRIPTION 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.
  • Page 5 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. •...

  • Page 6: Functional Description

    FUNCTIONAL DESCRIPTION FUNCTIONAL DESCRIPTION FUNCTIONAL DESCRIPTION FUNCTIONAL DESCRIPTION FUNCTIONAL DESCRIPTION Front view Front view Front view Front view Front view 1) Liquid Crystal Display (LCD). 2) F1, F2, F3 functional keys. keys to manually increase/decrease the parameters or to scroll the pa- rameter list.
  • Page 7 Top view Top view Top view Top view Top view 14) Electrode DIN connector. 15) USB connector.

  • Page 8: Specifications

    SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS t a r n o i – º 4 – ) F º t a r n o i C º ) F º a e r ± t i g ± h t i ±...

  • Page 9: Probe Functional Description

    PROBE FUNCTIONAL DESCRIPTION PROBE FUNCTIONAL DESCRIPTION PROBE FUNCTIONAL DESCRIPTION PROBE FUNCTIONAL DESCRIPTION PROBE FUNCTIONAL DESCRIPTION PROBE FUNCTIONAL DESCRIPTION PROBE FUNCTIONAL DESCRIPTION PROBE FUNCTIONAL DESCRIPTION PROBE FUNCTIONAL DESCRIPTION PROBE FUNCTIONAL DESCRIPTION 1. D.O. Probe 2. Protective Cap 3. Watertight Shielded Cable 4.

  • Page 10: Probe Connection And Preparation

    PROBE CONNECTION AND PREPARATION PROBE CONNECTION AND PREPARATION PROBE CONNECTION AND PREPARATION PROBE CONNECTION AND PREPARATION PROBE CONNECTION AND PREPARATION 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.

  • Page 11: Operational Guide

    OPERATIONAL GUIDE OPERATIONAL GUIDE OPERATIONAL GUIDE OPERATIONAL GUIDE OPERATIONAL GUIDE INITIAL PREPARATION The instrument is supplied complete with rechargeable batteries. Proceed with a complete charging process before starting (see page 60). To prepare the instrument for field measurements close the serial communica- tion socket and all unused connector sockets with proper stopper (to ensure waterproof protection).
  • Page 12 SALINITY COMPENSATION If the sample contains significant concentration of salinity, the read out values must be corrected, taking into account the lower degree of oxygen solubility in this situation. Before taking any DO measurements remember to set the salinity value from the SETUP menu (page 33).
  • Page 13 BAROMETRIC PRESSURE COMPENSATION The dissolved oxygen saturation value varies with pressure, so it is important to compensate the effect that pressure has on DO measurements. i t l º F º 6 . 4 1 . 4 6 . 3 1 .
  • Page 14 The HI 98186 meter contains a built-in barometer, and it is able to automati- cally compensate for changes in barometric pressure. If another pressure value than the barometer’s reading is to be used, then the manual pressure feature must be enabled from the SETUP menu (see page 33), and afterwards the pressure value can be set using the ARROW keys.
  • Page 15 BOD MEASUREMENTS Biochemical oxygen demand (BOD) is an indicator for the concentration of biodegradable organic matter present in a sample of water. It can be used to infer the general quality of the water and its degree of pollution. BOD measures the rate of oxygen uptake by microorganisms in a sample of water at a fixed temperature and over a given period of time.
  • Page 16 when at least one initial BOD data record has been memorized). By pressing Add New the BOD Parameters screen will be displayed: BOD Parameters: • Bottle ID: a number used to identify a specific bottle. Range: 0000 to 9999. • The type of the Sample: Sample or Seed. •...
  • Page 17 By pressing View ID a list of all the saved BOD initial data records will be displayed. The seed records will have the symbol “*” displayed after the bottle Use the ARROW keys to scroll the list of BOD initial data records. Press More to view detailed information for the selected record.
  • Page 18 BOD evaluation From the BOD measure screen press Compute to evaluate the BOD for a specified sample. The following screen will be displayed. If the date of the current measurement is previous to the date of the selected measurement then the Eval. BOD key will not be displayed. Press MORE to view detailed information for the selected record.
  • Page 19 Press any key to clear the warning message from the display or press HELP to view detailed information about the warning. Note: If the Autodelete BOD start data option is enabled in SETUP (see page 33), when the BOD result is saved (LOG key pressed) the corresponding BOD initial data record will be automatically deleted from the instrument’s memory.
  • Page 20 Note: If the final DO value is greater than the initial DO value an error message will be displayed.

  • Page 21: Our Measurement

    O U R M E A S U R E M E N T O U R M E A S U R E M E N T O U R M E A S U R E M E N T O U R M E A S U R E M E N T O U R M E A S U R E M E N T The OUR is used to determine the oxygen consumption or respiration rate.
  • Page 22 If the DO reading is less than the minimum end DO value set during OUR configuration a warning icon will be displayed and a beep will be heard every two seconds. Press Stop to stop the test and the beeper. To end the OUR test before the maximum time interval set during OUR configuration press Stop.
  • Page 23 • If the DO value at the end of the test is greater than the DO value from the beginning of the test an error message will be displayed. Press Start to begin a new OUR test or ESC to return to the OUR measure screen.

  • Page 24: Sour Measurement

    S O U R M E A S U R E M E N T S O U R M E A S U R E M E N T S O U R M E A S U R E M E N T S O U R M E A S U R E M E N T S O U R M E A S U R E M E N T The Specific Oxygen Uptake Rate (SOUR), also known as the oxygen con-...
  • Page 25 If the DO value is less than the minimum start DO value, the meter will display an error message, and the test cannot be started. If the minimum start DO condition is met the instrument will display the instantaneous specific oxygen consumption rate and the amount of time that has passed from the beginning of the test.
  • Page 26 At the end of the test the meter will display the computed SOUR value and the duration of the test. Press LOG to save a complete set of data regarding the SOUR test. Press Start to begin a new SOUR test. Notes: •...

  • Page 27: Temperature Measurement

    TEMPERATURE MEASUREMENTS TEMPERATURE MEASUREMENTS TEMPERATURE MEASUREMENTS TEMPERATURE MEASUREMENTS TEMPERATURE MEASUREMENTS The DO probe has a built-in temperature sensor. The measured temperature is indicated on the display. Allow the probe to reach thermal equilibrium before taking any measure- ments. This can take several minutes. The greater the difference between the temperature at which the probe was stored and the temperature of the sample, the longer the time will be.
  • Page 28 Press CAL. The calibration menu will be displayed. Press DO to select the DO calibration. The DO calibration screen will be displayed and the standard 0% saturation (or 0 mg/L, depending on the currently selected measuring unit), will be automatically selected. The hourglass icon will be shown on the display until the reading becomes stable.
  • Page 29 The hourglass icon will be shown on the display until the reading becomes stable. When the reading is stable and close to the selected buffer, the CFM functional key is displayed. Press CFM to confirm the calibration point. The instrument will return to the main screen and will memorize the slope calibration data.
  • Page 30 Press the Manual functional key. The standard value can be changed using the ARROW keys in the range 0 to 100% saturation or 0 to 8.26 mg/L, depending on the currently selected measuring unit. Set the standard value to the determined DO value. The hourglass icon will be shown on the display until the reading becomes stable.
  • Page 31 The “Calibration cleared” message will be displayed for a few seconds and the meter will return to the main screen. If the manual pressure feature is enabled, the Clear Clear Clear Clear Clear key will be active only for 5 seconds after accessing the DO calibration screen, and afterwards it will be replaced by the Pressure/Standard functional key.

  • Page 32: Good Laboratory Practice (Glp)

    GOOD LABORATORY PRACTICE (GLP) GOOD LABORATORY PRACTICE (GLP) GOOD LABORATORY PRACTICE (GLP) GOOD LABORATORY PRACTICE (GLP) GOOD LABORATORY PRACTICE (GLP) GLP is a set of functions that allows storage and retrieval of data regarding the maintenance and status of the electrode. All data regarding DO calibration is stored for the user to review when necessary.

  • Page 33: Setup

    S E T U P S E T U P S E T U P S E T U P S E T U P Setup mode allows viewing and modifying the measurement parameters. The following table lists the SETUP parameters, their valid range and the factory default settings.
  • Page 34 -Total volume The total volume of the solution to be tested 0.1 to 300.0 mL 0.1 mL -Sample volume The volume of sample in the solution to be tested 0.1 to 300.0 mL 0.1 mL -Solids weight Total solids or Volatile 0.1 to 300.0 g/L 0.1 g/L Suspended solids weight...
  • Page 35 PARAMETER SCREENS PARAMETER SCREENS PARAMETER SCREENS PARAMETER SCREENS PARAMETER SCREENS Calibration timeout Focus on the Calibration Timeout item. Press Modify. Use the ARROW keys to set the desired value. Press Accept to confirm or ESC to return without saving. Note: If enabled “CAL DUE” warning will be displayed, the set number of days after calibration is over passed.
  • Page 36 BOD configuration Focus on BOD configuration item. Press Select. Parameters: • Sample min D DO -the minimum acceptable difference between the initial and final DO values for a sample. If the difference is less than this value the meter will show a warning message when evaluating the BOD. Range: 0.00 to 50.00 mg/L.
  • Page 37 OUR configuration Focus on OUR configuration item. Press Select. Parameters: • Min time - the minimum time for the OUR test. Range: 1 to 3600 seconds. • Max time - the maximum time for the OUR test. The test will stop automatically when the maximum time has elapsed.
  • Page 38 Press Select. • Min time - the minimum time for the SOUR test. Range: 1 to 3600 seconds. • Max time - the maximum time for the SOUR test. The test will stop automatically when the maximum time has elapsed. Range: 0.00 to 50.00 mg/L.
  • Page 39 If disabled, the user has to delete BOD initial data records that were used in BOD result evaluation, entering View initial BOD data mode. Manual pressure Focus on Manual pressure item. Press the displayed functional key to enable/disable the feature. If enabled, the pressure can be entered by the user, while in measurement screen, using ARROW keys.
  • Page 40 Temperature unit Focus on the Temperature unit option. Press the displayed functional key in order to change the temperature unit. Backlight Focus on Backlight item. Press Modify. keys to change intensity then press Accept to confirm. Press ESC to leave without changing. Contrast Focus on the Contrast item.
  • Page 41 keys to change intensity then press Accept to confirm. Press ESC to leave without changing. AutoLightOff Focus on the AutoLightOff item. Press one of the functional key to change the option. AutoPowerOff Focus on the AutoPowerOff item. Press Modify. Use ARROW keys to select interval then press Accept. Press ESC to leave without changing.
  • Page 42 Press Modify. keys to select item. Use ARROW keys to change the focused values. Press Accept to confirm the new setting, or ESC to leave without changing. Time Format Focus on the Time Format item. Press functional key to change the option. Date Format Focus on the Date Format item.
  • Page 43 Language Focus on the Language item. Use the desired functional key to change the option. Wait until the new language is loaded. If any language can be loaded, the instrument will work in safe mode. In this mode all messages are displayed in English and Help is not available. BeepOn Focus on the BeepOn item.
  • Page 44 BaudRate Focus on the BaudRate item. Press Modify. Use ARROW keys to select the desired communication baud. Press Accept to confirm or ESC to exit. Meter Information Focus on the Meter information item. Press Select. The meter informations are displayed: -firmware version -language version -DO and temperature factory calibration date/time...

  • Page 45: Logging

    L O G G I N G L O G G I N G L O G G I N G L O G G I N G L O G G I N G This feature allows the user to log DO, BOD, OUR and SOUR measurements. All logged data can be transferred to a PC through the USB or RS232 port.
  • Page 46 BOD recall: OUR recall: SOUR recall: If no data were logged, the instrument will display “No Records”. Use ARROW keys to scroll the list of records. Press Delete All to enter Delete All screen. Press Delete to enter Delete records screen. Press More to view more information of the focused record.
  • Page 47 Note: • “S.C. “ message in the title bar means seed corrected. • “not S.C.” message in the title bar means seed not corrected. The Correct functional key will be displayed if the BOD result was not seed corrected. Note: For a seed corrected sample, on last page will be shown the Seed bottle ID used for correction.

  • Page 48: Autoend

    Note: In case that the SOUR value was corrected to 20 °C the message “(@20°C)” will be displayed before the SOUR value. Use ARROW keys to view the complete log information about the next/ previous record while are displayed. If Delete is pressed. Use ARROW key to focus the record to be deleted and then press CFM.

  • Page 49: Pressure Calibration

    PRESSURE CALIBRATION PRESSURE CALIBRATION PRESSURE CALIBRATION The HI 98186 meter has an internal barometer for automatic pressure compensation for DO readings. The instrument is factory calibrated for pres- sure measurements and no user calibration is needed. If the pressure read- ing is inaccurate, pressure calibration should be performed.
  • Page 50 Note: • If a pressure calibration has been previously performed it is possible to erase the calibration by pressing the Clear functional key. • The “Calibration cleared” message will be displayed for a few seconds and the meter will return to the main screen. •...

  • Page 51: Temperature Calibration

    TEMPERATURE CALIBRATION TEMPERATURE CALIBRATION TEMPERATURE CALIBRATION TEMPERATURE CALIBRATION TEMPERATURE CALIBRATION ( ( ( ( ( f o r t e c h n i c a l p e r s o n n e l o n l y f o r t e c h n i c a l p e r s o n n e l o n l y f o r t e c h n i c a l p e r s o n n e l o n l y f o r t e c h n i c a l p e r s o n n e l o n l y ) ) ) ) )
  • Page 52 • Use the ARROW keys to set the calibration point values to that of the ice and water mixture, measured by the reference thermometer. • When the reading is stable and close to the selected calibration point, the CFM functional key is displayed. •...
  • Page 53 • When the reading is stable and close to the selected calibration point, the CFM functional key is displayed. • Press CFM to confirm. The instrument returns to the main screen. Note: •If the reading is not close to the selected calibration point or the difference between first selected point and second selected point is less than 25 ºC, “Wrong”...

  • Page 54: Pc Interface

    PC INTERFACE PC INTERFACE PC INTERFACE PC INTERFACE PC INTERFACE Data transmission from the instrument to the PC can be done with the HI 92000 Windows compatible software (optional). HI 92000 also offers graphing and ® on-line help feature. Data can be exported to the most popular spreadsheet programs for further analysis. To connect your instrument to a PC, use an USB cable connector.
  • Page 55 CHR xx Change the instrument range according with the parameter value (xx): • xx=20 DO range • xx=21 BOD range • xx=22 OUR range • xx=23 SOUR range The instrument will answer for these commands with: <STX> <answer > <ETX> where: <STX>...
  • Page 56 • 0x10: temperature probe connection • 0x20: DO measure unit (0 = %, 1= mg/L) • 0x01: new GLP GLP GLP GLP GLP data available • 0x02: new setup parameter • 0x04: out of calibration range • 0x08: the meter is in autoend mode; Reading status: R - in range, O - over range, U - under range •...
  • Page 57 • buffer value including sign and decimal point (this value is sent only if there is a 2 point calibration) (6 chars) • salinity value (3 chars) • pressure value in mmHg, including sign and decimal point (11 chars) • temperature value including sign and decimal point (8 chars) •...
  • Page 58 • maximum time in seconds (4 chars) • minimum start DO including sign and decimal point (6 chars) • minimum end DO including sign and decimal point (6 chars) • total volume including sign and decimal point (6 chars) • sample volume including sign and decimal point (6 chars) •...
  • Page 59 • BOD log data: : : : : • Sample type (1 = sample, 0 = seed) (1 char) • Seed corrected (1 = corrected, 0 = not corrected) (1 char) • Bottle ID (4 chars) • BOD value including sign and decimal point [mg/L] (8 chars) •...
  • Page 60 • OUR value, including sign and decimal point [mg/L/h] (8 chars) • SOUR log data: : : : : • Start DO value including sign and decimal point [mg/L] (8 chars) • End DO value including sign and decimal point [mg/L] (8 chars) •...
  • Page 61 Notes: •“Err8” is sent if the instrument is not in measurement mode. •“Err6” is sent if the requested range is not available. •“Err4” is sent if the requested set parameter is not available. •“Err3” is sent if the Log on demand is empty. •“Err9”...

  • Page 62: Battery Recharger/Replacement

    B A T T E R I E S B A T T E R I E S B A T T E R I E S B A T T E R I E S B A T T E R I E S R E C H A R G I N G / R E P L A C E M E N T R E C H A R G I N G / R E P L A C E M E N T R E C H A R G I N G / R E P L A C E M E N T...
  • Page 63 recharger. The front LED will turn on (green). • Place the instrument on the battery recharger case. A charging animation will be displayed if the battery capacity is less than 100%. • The complete charging process takes about 16 hours. Notes: •...

  • Page 64: Probe Maintenance

    PROBE MAINTENANCE PROBE MAINTENANCE PROBE MAINTENANCE PROBE MAINTENANCE PROBE MAINTENANCE The oxygen probe is made of reinforced plastic for maximum durability. A thermistor temperature sensor provides temperature measurements of the sample. Use the protective cap when not in use. To replace the membrane or refill with electro- lyte, proceed as follows: Remove the protective cap by gently twisting, and pulling and pulling it off the body of the...

  • Page 65: Troubleshooting Guide

    T R O U B L E S H O O T I N G T R O U B L E S H O O T I N G T R O U B L E S H O O T I N G T R O U B L E S H O O T I N G T R O U B L E S H O O T I N G I T U...

  • Page 66: Accessories

    Important Important Important Important Important In order to have accurate and stable measurements, it is important that the membrane surface is in perfect condition. This semipermeable membrane isolates the sensor elements from the environment but allows oxygen to enter. If any dirt is observed on the membrane, rinse carefully with distilled or deionized water.
  • Page 67 RECOMMENDATIONS FOR USERS Before using these products, make sure they are entirely suitable for the environment in which they are used. Operation of these instruments in residential areas could cause unacceptable interferences to radio and TV equipment, requiring the operator to follow all necessary steps to correct inter- ferences.

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