Hanna Instruments 98193 Instruction Manual
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Hanna Instruments 98193 Instruction Manual

Hanna Instruments 98193 Instruction Manual

Dissolved oxygen bod/our/sour meter
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Instruction Manual
HI 98193
Dissolved Oxygen
BOD/OUR/SOUR
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 98193

  • Page 1 Instruction Manual HI 98193 Dissolved Oxygen BOD/OUR/SOUR Meter w w w. h a n n a i n s t . c o m...

  • Page 2: Warranty

    WARRANTY The HI 98193 is guaranteed for two years against defects in workmanship and materials when used for their 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.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS WARRANTY .......................... 2 PRELIMINARY EXAMINATION ....................4 GENERAL DESCRIPTION ......................5 FUNCTIONAL DESCRIPTION ....................6 SPECIFICATIONS ........................8 PROBE FUNCTIONAL DESCRIPTION ..................9 PROBE CONNECTION AND PREPARATION ................10 OPERATIONAL GUIDE ......................11 OUR MEASUREMENT ......................20 SOUR MEASUREMENT ......................

  • Page 4: Preliminary Examination

    PRELIMINARY EXAMINATION 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: •...

  • Page 5: General Description

    GENERAL DESCRIPTION The HI 98193 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. Manual salinity compensation in water allows direct determination of dissolved oxygen in saline waters.

  • Page 6: Functional Description

    FUNCTIONAL DESCRIPTION FRONT VIEW 1) Liquid Crystal Display (LCD). 2) F1, F2, F3 functional keys. keys to manually increase/decrease the parameters or to scroll through the menu. 4) ON/OFF ( ) key, to turn the instrument ON and OFF. 5) LIGHT ( ) key, to toggle display backlighting. 6) GLP key, to display Good Laboratory Practice information.

  • Page 7: Top View

    TOP VIEW 14) Electrode DIN connector. 15) USB connector.

  • Page 8: Specifications

    SPECIFICATIONS e g n 0 0 . 0 0 . 0 . 0 0 . 0 u t a t a r n o i l o s s d e v y x O n e g o s e t u l n o i 1 0 .

  • Page 9: Probe Functional Description

    PROBE FUNCTIONAL DESCRIPTION PROBE FUNCTIONAL DESCRIPTION PROBE FUNCTIONAL DESCRIPTION PROBE FUNCTIONAL DESCRIPTION PROBE FUNCTIONAL DESCRIPTION PROBE FUNCTIONAL DESCRIPTION 1. DO Probe 2. Protective Cap 3. Watertight Shielded Cable 4. Polypropylene Probe Body 5. Temperature Sensor 6. O-Ring Seal 7. Silver Chloride Anode 8.

  • Page 10: Probe Connection And Preparation

    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.

  • Page 11: Operational Guide

    OPERATIONAL GUIDE INITIAL PREPARATION The instrument is supplied complete with batteries. See Batteries Replacement for details, page 59. To prepare the instrument for field measurements close the USB communication socket and all unused connector sockets with proper stopper (to ensure waterproof protection). Connect the DO probe to the 7-pin connector.

  • Page 12: Salinity Compensation

    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 30). The salinity affects the DO concentration, decreasing its value.

  • Page 13: Barometric Pressure Compensation

    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 C ° F ° 6 . 4 1 . 4 6 . 3 1 .
  • Page 14 The HI 98193 meter contains a built-in barometer, and it is able to automatically 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 30), 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 BOD Parameters: • Bottle ID: a number used to identify a specific bottle. Range: 0000 to 9999. • The type of the Sample: Sample or Seed. • Bottle Volume: the total volume of the BOD bottle. Range: 0.1 to 300.0 mL. •...
  • Page 17 Press More to view detailed information for the selected record. Press PgUp/Pg/Down to view the next/previous screen of information. Use the ARROW keys to view the detailed information about the next/previous record. If Delete is pressed, use the ARROW keys to highlight the record to be deleted and then press CFM. Press ESC to exit.
  • Page 18 Press CFM to replace the selected records DO, temperature, pressure and salinity values with the current values. Press ESC to return to the previous screen without replacing. If the conditions regarding the time difference are met, after pressing the Eval.BOD key, the instrument will display the computed BOD value.
  • Page 19 Seed Correction In case that the BOD was evaluated for a seeded sample and the list of the saved seed BOD values is not empty, the Correct functional key will be displayed. Press Correct to view the list of the saved seed BOD values. Select the desired seed BOD and then press Correct to compute the corrected BOD value.

  • Page 20: Our Measurement

    OUR MEASUREMENT The OUR is used to determine the oxygen consumption or respiration rate in water. It is defined as the mg/L of oxygen consumed per hour. The following equation is used for OUR determination: where: =Dissolved oxygen level at start of test START =Dissolved oxygen level at end of test =Elapsed time of test in seconds...
  • Page 21 To end the OUR test before the maximum time interval set during OUR configuration press Stop. If Stop is pressed before the minimum time for the OUR test has elapsed, the instrument will display a warning message. Press Resume to continue the test or Stop to end the test. At the end of the test the meter will display the computed OUR value and the duration of the test.

  • Page 22: Sour Measurement

    SOUR MEASUREMENT The Specific Oxygen Uptake Rate (SOUR), also known as the oxygen consumption or respiration rate, is defined as the milligram of oxygen consumed per gram of volatile suspended solids (VSS) per hour. This quick test has many advantages: rapid measure of influent organic load and biodegradability, indication of the presence of toxic or inhibitory wastes, degree of stability and condition of a sample, and calculation of oxygen demand rates at various points in the aeration basin.
  • Page 23 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. In case that the SOUR value is corrected to 20 °C (68 °F) and the measured temperature isn’t in the range 10 to 30 °C the temperature value will blink to alert that the temperature correction isn’t valid.
  • Page 24 Press Start to begin a new SOUR test. Notes: • If the DO reading is less than the minimum end DO value set during SOUR configuration, a warning message will be displayed. Press any key to clear the message from the screen, or press HELP to view detailed information about the warning.

  • Page 25: Temperature Measurement

    TEMPERATURE MEASUREMENT 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 measurements. 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 26 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. When the reading is stable and within range of the selected standard, the CFM functional key is displayed.
  • Page 27 Two points automatic calibration Submerge the probe into HI 7040 zero oxygen solution and stir gently for 2-3 minutes. 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 (0 mg/L) will be automatically selected.
  • Page 28 Notes: : : : : • If the manual pressure feature is enabled, during the DO calibration it is possible to switch between changing the standard value or the pressure value by pressing the Pressure/Standard functional key or the MODE key. •...

  • Page 29: 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. EXPIRED CALIBRATION The calibration time out can be set (see SETUP for details, page 30) from 1 to 7 days or can be disabled.

  • Page 30: Setup

    SETUP Setup mode allows viewing and modifying the measurement parameters. The following table lists the SETUP parameters, their valid range and the factory default settings. Item Description Valid Value Default Calibr. Time-out Number of days after Disabled, 1 to 7 days Disabled calibr.
  • Page 31 Total volume The total volume 0.1 to 300.0 mL 0.1 mL of the solution to be tested Sample volume The volume of sample 0.1 to 300.0 mL 0.1 mL in the solution to be tested Solids weight Total solids or Volatile 0.1 to 300.0 g/L 0.1 g/L Suspended solids weight...

  • Page 32: Parameter Screens

    PARAMETER SCREENS Calibration Timeout Highlight Calibration timeout . 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 after Calibration timeout period has elapsed since the previous calibration.

  • Page 33: Bod Configuration

    BOD Configuration Highlight BOD configuration . Press Select. Parameters: • Sample min ∆ 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.

  • Page 34: Our Configuration

    OUR Configuration Highlight OUR configuration . 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 35 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 36: Temperature Unit

    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 Highlight Manual pressure . 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 37 Backlight Highlight Backlight . Press Modify. Use / keys to change intensity then press Accept to confirm. Press ESC to leave without changing. Contrast Highlight Contrast . Press Modify. Use / keys to change intensity then press Accept to confirm. Press ESC to leave without changing.

  • Page 38: Auto Power Off

    Auto Light Off Highlight Auto Light off . Press one of the functional keys to change the option. Auto Power Off Highlight Auto Power off . Press Modify. Use ARROW keys to select interval then press Accept. Press ESC to leave without changing. Date/Time Highlight Date / Time .

  • Page 39: Time Format

    Use / 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 Highlight Time format . Press functional keys to change the option. Date Format Highlight Date Format .
  • Page 40 Language Highlight Language . 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. Beep On Highlight Beep On .

  • Page 41: Meter Information

    Baud Rate Highlight Baud Rate . Press Modify. Use ARROW keys to select the desired communication baud. Press Accept to confirm or ESC to exit. Meter Information Highlight Meter Information . Press Select. The meter information is displayed: -Firmware version -Language version -DO and Temperature factory calibration date/time -Battery Capacity...

  • Page 42: Logging

    LOGGING 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 port using HI 92000 application. The maximum logging space is 400 records. LOGGING THE CURRENT DATA To store the current reading into memory, press LOG.
  • Page 43 OUR recall: SOUR recall: If there is no logged data, 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 44 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, the last page will show the Seed bottle ID used for correction. OUR recall: SOUR recall: Note: In case that the SOUR value was corrected to 20...
  • Page 45 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 highlight the record to be deleted and then press CFM. Press ESC to exit. If Delete All is pressed the instrument asks for confirmation. Press CFM to confirm or ESC to exit without deleting.

  • Page 46: Autoend

    AutoEnd To freeze the first stable reading on the LCD press AutoEnd while the instrument is in DO measurement mode. The “Wait” symbol will blink until the reading is stable. When the reading is stable “Hold” icon will be displayed. Press Continue at any moment in order to enter continuous reading mode.

  • Page 47: Pressure Calibration

    PRESSURE CALIBRATION The HI 98193 meter has an internal barometer for automatic pressure compensation for DO readings. The instrument is factory calibrated for pressure measurements and no user calibration is needed. If the pressure reading is inaccurate, a pressure calibration should be performed.
  • Page 48 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 49: Temperature Calibration (For Technical Personnel Only)

    TEMPERATURE CALIBRATION (for technical personnel only) All the instruments are factory calibrated for temperature. Hanna’s DO probes are interchangeable and no temperature calibration is needed when they are replaced. If the temperature measurements are inaccurate, temperature recalibration should be performed. For an accurate recalibration follow instructions below.
  • Page 50 • When the reading is stable and within range of the selected calibration point, the CFM functional key is displayed. • Press CFM to confirm. • The second expected calibration point is displayed. • Immerse the DO probe into the second vessel as close as possible to the reference thermometer. •...
  • Page 51 Note: • If the reading is not within range of the selected calibration point or the difference between first selected point and second selected point is less than 25 °C, “Wrong” message will blink. • If the cause of “Wrong“ message is the difference between calibration points increase the temperature of the vessel with hot water until the calibration points are more than 25 °C apart.

  • Page 52: Pc Interface

    USB socket and the other to the serial or USB port of your PC. Note: If you are not using Hanna Instruments HI 92000 software, please see the following instructions. SENDING COMMANDS FROM PC It is also possible to remotely control the instrument with any terminal program.
  • Page 53 CHR xx Change the instrument range according to 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 54 • Reading status: R - in range, O - over range, U - under range • The following status flags are sent for all modes except mode 25 • DO reading range flag • temperature reading range flag • pressure reading range flag •...
  • Page 55 • instrument ID (4 chars) • calibration alarm timeout (2 chars) • Setup information (2 chars): 8 bit hexadecimal encoding: • 0x01: - - - - - beep is on • 0x04: - - - - - Celsius / Fahrenheit display (°C if the bit is set) •...
  • Page 56 LODDxxx Requests the xxx DO logged data LODBxxx Requests the xxx BOD logged data LODOxxx Requests the xxx OUR logged data LODSxxx Requests the xxx SOUR logged data LODIxxx Requests the xxx initial BOD value logged data LODDALL Requests all the DO log on demand LODBALL Requests all the BOD log on demand LODOALL Requests all the OUR log on demand LODSALL Requests all the SOUR log on demand...
  • Page 57 • Seed ID (for seed corrected samples) (4 chars) • OUR 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 58 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 59: Batteries Replacement

    BATTERIES REPLACEMENT To replace the batteries, follow the next steps: • Turn OFF the instrument. • Open the battery compartment by removing the four screws from the back of the instrument. • Remove the old batteries. • Insert four new 1.5V AA batteries in the battery compartment while paying attention to the correct polarity.

  • Page 60: 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 electrolyte, proceed as follows: Remove the protective cap by gently twisting, and pulling it off the body of the probe (see fig.

  • Page 61: Troubleshooting Guide

    TROUBLESHOOTING GUIDE d a e g n i c u l f a u t s e t e b o p o r y l r e n n o t c e e h t o r p .

  • Page 62: Accessories

    ACCESSORIES ChecktempC Electronic thermometer (range: -50.0 to 150.0 °C) ChecktempF Electronic thermometer (range: -58.0 to 302 °F) HI 7040M Zero Oxygen Solution, 230 mL HI 7040L Zero Oxygen Solution, 460 mL HI 7041S Refilling Electrolyte Solution, 30 mL HI 764073 Spare probe with 4 meter (13.4') cable HI 76407A/P 5 spare membranes...

  • Page 63: Recommendations For Users

    To avoid electrical shock, do not use these instruments when voltages at the measurement surface exceed 24 Vac or 60 Vdc. To avoid damage or burns, do not perform any measurement in microwave ovens. Hanna Instruments reserves the right to modify the design, construction or appearance of its products without advanced notice.
  • Page 64 Hanna Instruments Inc. Highland Industrial Park 584 Park East Drive Woonsocket, RI 02895 USA Technical Support for Customers Tel. (800) 426 6287 Fax (401) 765 7575 E-mail tech@hannainst.com www.hannainst.com Local Sales and Customer Service Office Printed in ROMANIA MAN98193 11/14...

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