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Hanna Instruments HI 98188 Instruction Manual

Usp compliant ec, tds, nacl, resistivity, temperature meter
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Instruction Manual
HI 98188
USP Compliant
EC, TDS, NaCl, Resistivity,
Temperature 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 98188

  • Page 1 Instruction Manual HI 98188 USP Compliant EC, TDS, NaCl, Resistivity, Temperature Meter w w w. h a n n a i n s t . c o m...

  • Page 2: Table Of Contents

    W A R R A N T Y W A R R A N T Y The HI 98188 is guaranteed for two years against defects in workmanship and materials when used for their intended purpose and maintained according to instructions.

  • Page 3: Preliminary Examination

    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. Hanna Instruments reserves the right to modify the design, construction and appearance of its products without advance notice.

  • Page 4: General Description

    GENERAL DESCRIPTION GENERAL DESCRIPTION GENERAL DESCRIPTION GENERAL DESCRIPTION The HI 98188 instrument is state-of-the-art, heavy-duty conductivity meter, designed to provide laboratory results and accuracy under harsh industrial conditions. The USP standard compliance makes the instrument useful for pure water determination.

  • Page 5: Functional Description

    FUNCTIONAL DESCRIPTION FUNCTIONAL DESCRIPTION FUNCTIONAL DESCRIPTION FUNCTIONAL DESCRIPTION Front view Front view Front view Front view Front view HI 98188 EC/TDS/NaCl/Resistivity Meter HELP RANGE SETUP MODE LIGHT 1) Liquid Crystal Display (LCD). 2) F1, F2, F3 functional keys. keys to manually increase/decrease the parameters or to scroll between the parameter list.
  • Page 6 Top view Top view Top view Top view Top view 14) Electrode DIN connector. 15) USB connector.

  • Page 7: Specifications

    SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS u t c v i t y t i µ µ µ µ µ µ l o s i t u ± ± µ t i g h c i ) r e s i s v i t y t i l o s...
  • Page 8 n i l y t i l C a 0 . 0 0 . 0 r e t a c s : e l 0 0 . 0 0 . ) t p a r P i t c l a c n i l : y t i 1 0 .

  • Page 9: 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 63). To prepare the instrument for field measurements close the serial communica- tion socket with proper stopper (to ensure waterproof protection).
  • Page 10 EC range The conductivity range is from 0 to 400 mS/cm . The actual conductivity range (the uncompensated conductivity) is up to 1000 mS/cm. The instrument will display conductivity readings up to 1000 mS. Note: The symbol in front of the temperature reading means that the temperature can be entered by the user (Manual option selected in Setup, or temperature out of range).
  • Page 11 From practical reasons, the salinity of a solution is derived from the salinity of the seawater. Two methods of calculating the salinity from the conductivity are suported: • Natural seawater scale • Practical salinity scale Natural sea water scale (UNESCO 1966) According to the definition, salinity of a sample in ppt is calculated using the following formula: where:...
  • Page 12 According to the definition, salinity of a sample in psu (practical salinity units) is calculated using the following formula: - coefficient; (sample) - uncompensated conductivity at T °C; C(35,15)= 42.914 mS/cm - the corresponding conductivity of KCl solution containing a mass of 32.4356 g KCl / 1 Kg solution; - temperature compensation polynom = 0.008 =0.0005...
  • Page 13 Notes: • If the meter displays the top of the range blinking, the reading is out of range. • If the stability indicator “ ” blinks, the reading is unstable. • Make sure the meter is calibrated before taking measurements. •...

  • Page 14: Autoranging

    A U T O R A N G I N G A U T O R A N G I N G A U T O R A N G I N G A U T O R A N G I N G A U T O R A N G I N G The EC, Resistivity and TDS scales are autoranging.

  • Page 15: Temperature Compensation

    TEMPERATURE COMPENSATION TEMPERATURE COMPENSATION TEMPERATURE COMPENSATION TEMPERATURE COMPENSATION TEMPERATURE COMPENSATION Two selectable temparature sources are available: reading directly from the sensor inside the probe or manual entry. Three options of compensating temperature are available: Linear Temperature Compensation: The conductivity of a solution with a specific electrolyte concentration changes with temperature.

  • Page 16: Conductivity Versus Temperature Chart

    C O N D U C T I V I T Y V E R S U S C O N D U C T I V I T Y V E R S U S C O N D U C T I V I T Y V E R S U S C O N D U C T I V I T Y V E R S U S C O N D U C T I V I T Y V E R S U S TEMPERATURE CHART...

  • Page 17: Usp Measurement

    U S P M E A S U R E M E N T U S P M E A S U R E M E N T U S P M E A S U R E M E N T U S P M E A S U R E M E N T U S P M E A S U R E M E N T Pharmaceutical laboratories working in the US market are obliged to respect...
  • Page 18 are trapped. Connect the probe to the meter enter USP mode and press the Stage 1 key. The instrument will perform a temperature and conductivity measurement (using a non-temperature corrected conductivity reading). • Using the Stage 1 temperature and conductivity requirement table the corresponding conductivity limit at that temperature is determined.
  • Page 19 Stage 3 Determine the combined effect of the CO and pH. Use a Hanna Instruments pH meter. Take care that the instrument be calibrated in at least two points using pH 4.01 and pH 7.01 Hanna buffers. Perform the following test within approximately 5 minutes of the conductivity determination while maintaining the sample temperature at 25±1 ºC.
  • Page 20 Stage 3 pH and conductivity requirements (For atmosphere and temperature equilibrated samples only) v i t c y t i S µ 0 . 5 7 . 4 1 . 5 1 . 4 2 . 5 6 . 3 3 .

  • Page 21: Usp Mode Procedures

    USP MODE PROCEDURES USP MODE PROCEDURES USP MODE PROCEDURES USP MODE PROCEDURES USP MODE PROCEDURES Press Mode key while in EC range to enter USP mode. The instrument will display the USP main screen. Press Stage 1 to start with first stage evaluation. Press Stage 2 to start with second stage evaluation.
  • Page 22 Press Log to memorise USP Stage 1 report. The record number and the amount of free log space in % is displayed for few seconds. Note: If the log space is full enter view logged data mode by pressing RCL key and free log space by deleting previously memorized records.
  • Page 23 Wait until the reading is stable (about 5 minutes). Note: If the input record has an instability higher than 1mS, stability period will be reset. The completion time bar will remain empty. The “USP Met” message will be displayed if the USP stage 2 criteria is reached. Press Report to view the USP report.
  • Page 24 Press Continue to enter USP Stage 3 analyze. The instrument will display the sample pH setting mode. Use a calibrated pH meter to read the pH value of the sample. Use ARROW keys to set the value to that red from the pH meter. Press Accept to confirm the pH setting.

  • Page 25: User Calibration

    USER USER USER CALIBRATION CALIBRATION CALIBRATION CALIBRATION USER USER CALIBRATION To enter User Calibration screen press CAL key while in EC or Salinity range. From EC range Press the corresponding functional key to enter: • EC user calibration. • Probe replatinization. •...
  • Page 26 Note: TDS and Resistivity readings are automatically derived from the EC reading and no specific calibration is needed. PROCEDURE HI 98188 instrument offers a choice of 7 memorized standards (0.00 mS/cm, 84.0 mS/cm, 1.413 mS/cm, 5.00 mS/cm, 12.88 mS/cm, 80.0 mS/cm and 111.8 mS/cm).
  • Page 27 • From EC range press CAL to enter calibration screen. • Leave the probe in the air and press EC. The instrument will display the measured EC on the LCD, first expected standard and the temperature reading. • If necessary, press the ARROW keys to select a different standard value. •...
  • Page 28 functional key is displayed. • Press CFM to confirm calibration. • The calibrated value and the third expected standard value will be displayed. • After the second calibration point is confirmed, immerse the EC electrode into the third standard solution and stir gently. Tap the probe repeatedly to remove any air bubbles that may be trapped inside the sleeve.
  • Page 29 • Press CFM to confirm calibration. • The calibrated value and the fourth expected standard value will be displayed. • After the third calibration point is confirmed, immerse the EC electrode into the fourth standard solution and stir gently. Tap the probe repeatedly to remove any air bubbles that may be trapped inside the sleeve.
  • Page 30 • After the fourth calibration point is confirmed, immerse the EC electrode into the fifth standard solution and stir gently. • If necessary, press the ARROW keys to select a different standard value. • The “ ” tag will blink on the LCD until the reading is stable. •...
  • Page 31 CLEAR CALIBRATION Press Clear functional key when displayed to clear old calibrations. All old calibrations, are cleared and the instrument continues calibration. The points confirmed in current calibration are kept. Note: If Clear calibration is invoked during the first calibration point, the instrument returns to measurement mode.
  • Page 32 • The instrument enters the Salinity calibration screen. • Press Salt. The measured % NaCl, the temperature and the 100% NaCl standard are displayed. • Rinse the probe with some of the calibration solution or deionized water. Immerse the probe into HI 7037L solution. Tap the probe repeatedly to remove any air bubbles that may be trapped inside the sleeve.

  • Page 33: 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 EC and NaCl calibration is stored for the user to review when necessary.
  • Page 34 The instrument will display a lot of data including calibration standards, offset, time and date, etc. Use the Arrow keys to select the offset or calibration standards, in order to view new information. To see more information press More. • More information regarding offset. •...

  • Page 35: 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. These are general SETUP parameters for all the ranges and range specific parameters.
  • Page 36 The following table lists the specific range parameters: Item Description Valid value Default Calibr. Number of days after Disable, 1 to 7 days Disable Timeout Calibration warning (EC, NaCl) is displayed Out cal Display warning if the Enable/Disable Disable range check reading is too far from the (EC range calibration points...
  • Page 37 GENERAL PARAMETER SCREENS Select Profile Focus on the Select Profile item. Press Select. The list with memorised profiles is displayed. Press Add to add a new profile to the list (max 10). Use the Arrow keys to focus on the desired profile. Press Select to select the profile and exit to Setup.
  • Page 38 Press Delete to delete selected profile. The Delete key is displayed only if more than one profile is in the list. Press Accept to confirm the deletion or Cancel to cancel and return to the previous screen. Press ESC to return to profile list screen. Logging interval Focus on the Logging interval item.
  • Page 39 Contrast Focus on the Contrast item. Press Modify. keys to change contrast then press Accept to confirm. Press ESC to leave without changing. Auto Light Off Focus on the Auto Light Off item. Press 5, 10 or 30 to change settings. Press one of the functional key to change the option.
  • Page 40 Press Modify. Press ARROW keys to select internal interval then press Accept. Press ESC to leave without changing. Date/Time Focus on the Date/Time item. Press Modify. keys to select item. Use ARROW keys to change focused values. Press Accept to confirm new setting, or ESC to leave without changing. Time Format Focus on the Time Format item.
  • Page 41 Press Modify. Use ARROW keys to select date format then press Accept. Press ESC to leave without changing. Language Focus on the Language item. Use the desired functional key to change the option. Wait until 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.
  • Page 42 Press Modify. Use ARROW keys to change the instrument ID. Press Accept to confirm or ESC to exit without saving. Baud Rate Focus on the Baud Rate item. Press Modify. Use ARROW keys to select the desired communication baud. Press Accept to confirm or ESC to exit.
  • Page 43 The meter informations are displayed: -firmware version -language version -mV and temperature factory calibration time/date -battery capacity RANGE SPECIFIC PARAMETERS Calibration Timeout Focus on the Calibration Timeout item. Press Modify. Use ARROW keys to set desired value. Press Accept to confirm or ESC to return without saving. Note: If enabled “CAL DUE”...
  • Page 44 Press the corresponding functional key in order to enable/disable this feature. If enabled, a warning message is displayed when the EC reading is too far from the EC calibration points. Temperature source Focus on the Temperature source item. Press the displayed functional key in order to change the option. Select Probe in order to take the temperature automatic with the temperature sensor inside the electrode.
  • Page 45 Press Modify to select ranging mode. Use the Arrow keys to change selection. Press Accept to confirm or ESC to exit without saving. If Automatic is selected the instrument changes the range automatically according with the input. If one of the range is selected all the readings are displayed on the correspond- ing range.
  • Page 46 Press the displayed functional key in order to change option. If enabled, the “Out Cal Range” message will be displayed if the EC reading is not within the calibration range. Temperature Coefficient Focus on the Temperature Coefficient item. Press Modify in order to set the temperature coefficient. Use the Arrow keys to change the value.

  • Page 47: Log On Demand

    L OG O N DE MAND L OG O N DE MAND L OG O N DEM AND L OG O N DE MAND L OG O N DE MAND This feature allows the user to log up to 400 readings. All logged data can be transferred to a PC through the USB port.
  • Page 48 Use arrow keys to focus on the desired range then press View. The list of records corresponding to the selected range is displayed. If no data were logged on the current range, the instrument will display “No Records” message. Use ARROW keys to scroll between the records from the list. Press Delete All to enter Delete All screen.
  • Page 49 Press Delete All to enter delete all mode. Press More to view the complete record information. Press PgDown or PgUp to scroll the record screens.

  • Page 50: Autolog

    A U T O L O G A U T O L O G A U T O L O G A U T O L O G A U T O L O G This feature allows the user to log up to 1000 readings. All logged data can be transferred to PC through USP port.
  • Page 51 Press AutoLog to enter the automatic log range selection. Use arrow keys to focus on the desired range, then press View. The list of lots corresponding to the selected range is displayed. If no data were logged on the current range, the instruments will display “No Records!”.

  • Page 52: Autoend

    A A A A A u t o E n d u t o E n d u t o E n d u t o E n d u t o E n d To freeze the first stable reading on the LCD press AutoEnd while the instru- ment is in measurement mode.

  • Page 53: Temperature Calibration (For Technical Personnel Only)

    TEMPERATURE CALIBRATION TEMPERATURE CALIBRATION TEMPERATURE CALIBRATION TEMPERATURE CALIBRATION TEMPERATURE CALIBRATION (for technical personnel only) All the instruments are factory calibrated for temperature. Hanna’s temperature probes are interchangeable and no temperature calibration is needed when they are replaced. If the temperature measurements are inaccurate, temperature recalibration should be performed.
  • Page 54 • When the reading is stable and close to the selected calibration point, the CFM functional key is displayed. • Press CFM to confirm. • The second expected calibrated point is displayed. • Immerse the probe into the second vessel as close as possible to the reference thermometer.
  • Page 55 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” message will blink. • If the WRONG source is the difference between calibration points increase the temperature of the vessel with hot water in order to be acceptable.

  • Page 56: 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.
  • Page 57 value (xx): • xx=10 EC range • xx=11 Resistivity range • xx=12 TDS range • xx=13 USP range • xx=14 NaCl % range • xx=15 Salinity, Sea water range • xx=16 Salinity, PSUrange The instrument will answer for these commands with: <STX>...
  • Page 58 • Meter status (2 chars of status byte): represents a 8 bit hexadecimal encoding. • 0x10 - temperature probe is connected • 0x20 - autolog in progress • 0x01 - new GLP data available • 0x02 - new SETUP parameter •...
  • Page 59 10 - EC range 11 - Resistivity range 12 - TDS range 13 - USP range 14 - NaCl % range 15 - Salinity Sea Water range 16 - Salinity Sea Water, PSU range • creation time (12 chars) • temperature source (1 char): 0 - probe, 1 - manual entry •...
  • Page 60 NSLx Requests the number of logged samples. The command parameter (1 char): • E - the request is for EC range • R - the request is for Resistivity range • T - the request is for TDS range • N - the requests is for NaCl range •...
  • Page 61 • EC value (8 chars) • EC unit (1 char): 0 - mS; 1 - mS • EC overrange flag (1 char): R, U, O • temperature reading, in ºC (8 chars) Next data is sent if the lot is not for EC range. •...
  • Page 62 For USP records: • Record ID (3 chars) • Stage 1 status (1 char): 0 - not verified; 1 - USP met; 2 - USP not met • Stage 2 status (1 char): see Stage 1 • Stage 3 status (1 char): see Stage 1 •...

  • Page 63: Batteries Recharging/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 64 To recharge the rechargeable batteries, follow the next steps: • Connect the 12Vdc power adapter to the main line and to the main line of thebattery recharger. The front LED will turn ON. • Place the instrument in the battery recharger case. A charging animation will be displayed if the battery capacity is less than 100 %.

  • Page 65: Troubleshooting Guide

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

  • Page 66: Probe Maintenance

    PROBE MAINTENANCE PROBE MAINTENANCE PROBE MAINTENANCE PROBE MAINTENANCE PROBE MAINTENANCE Rinse the probe with clean water after measurements. If more cleaning is required, remove the probe sleeve and clean the probe with a cloth or a nonabrasive detergent. Make sure to reinsert the sleeve onto the probe properly and in the right direction.

  • Page 67: Accessories

    The process can be interrupted by pressing Stop or ESC key. The replatinization process takes about 5 minutes. Remove the probe from the replatinization solution and rinse it with deionizated water. A C C E S S O R I E S A C C E S S O R I E S A C C E S S O R I E S A C C E S S O R I E S...

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