Hanna Instruments HI 88713 Instruction Manual
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Hanna Instruments HI 88713 Instruction Manual

Iso turbidity meter
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Instruction Manual
HI 88713
ISO Turbidity 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 88713

  • Page 1 Instruction Manual HI 88713 ISO Turbidity Meter w w w. h a n n a i n s t . c o m...

  • Page 2: Table Of Contents

    Dear Customer, Thank you for choosing a Hanna Instruments product. This manual will provide you with the necessary information for correct use of the instrument. Please read this instruction manual carefully before using the instrument. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst.com or see the back side of this manual for our worldwide sales and technical service contacts.

  • Page 3: Preliminary Examination

    GENERAL DESCRIPTION GENERAL DESCRIPTION The HI 88713 Turbidity bench meter is a high accuracy, meter that benefits from Hanna’s years of experience as manufacturer of analytical instruments. The HI 88713 Turbidity bench meter meets and exceeds the requirements of ISO 7027 standard.

  • Page 4: Abbreviations

    The ISO 7027 Method specifies the key parameters for the optical system and the method to measure the turbidity of water. The HI 88713 Turbidity bench meter is designed to meet or exceed the criteria specified by the ISO 7027, DIN 38404 and NF EN 27027.
  • Page 5 The optical system of HI 88713 instrument is designed to have very low stray light, providing accurate results for low turbidity samples. However, special care must be taken when measuring low turbidities (see page 9 “General Tips for an Accurate Measurement”...

  • Page 6: Functional Description

    F U N C T I O N A L D E S C R I P T I O N F U N C T I O N A L D E S C R I P T I O N F U N C T I O N A L D E S C R I P T I O N F U N C T I O N A L D E S C R I P T I O N F U N C T I O N A L D E S C R I P T I O N...
  • Page 7 DISPLAY DESCRIPTION The display contains the following fields: 1) Current time 2) Functional keys 3) Selected mode 4) Measuring units 5) Measured value KEYPAD DESCRIPTION The keypad contains 8 direct keys and 3 functional keys with the following functions: Press to perform the function displayed above it. The function are screen releated. Press to exit the current screen.

  • Page 8: Specifications

    SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS FNU mode Range 0.00 to 9.99; 10.0 to 99.9; 100 to 1000 FNU 0.01; 0.1; 1 FNU Resolution Accuracy ±2% of reading plus straylight FAU mode Range 10.0 to 99.9; 100 to 4000 FAU Resolution 0.1;...

  • Page 9: General Tips For An Accurate Measurement

    GENERAL TIPS FOR AN ACCURATE MEASUREMENT GENERAL TIPS FOR AN ACCURATE MEASUREMENT The HI 88713 is a highly accurate bench too turbidity meter. Special care must be taken during calibration and sample preparation to optimize the instrument performance and to fully benefit from its features.
  • Page 10 CUVETTE PREPARATION Whenever a cuvette is used, it must be clean inside and outside. When it is placed into the instrument, it must be dry outside, completely free of fingerprints or dirt. If the cuvette is not indexed, use the factory marking to align the cuvette with the marking on the cuvette holder.
  • Page 11 To further reduce the effect of glass imperfections, the cuvette can be indexed and use this new index as the position mark. For indexing one cuvette or matching multiple cuvettes, the continuous reading mode is suggested. In this mode multiple successive readings are taken without turning off the lamp. The turbidity is immediately displayed, reducing considerably the measurement time.
  • Page 12 • Mark this position on the white band at the top of the cuvette with a water resistant pencil. • Always use this position to align the cuvette with the mark on the cuvette holder. MATCHING MULTIPLE CUVETTES Precise measurements require the use of a single cuvette. If it is not possible, cuvette selection and matching must be performed before taking measurements.
  • Page 13 • Insert the second cuvette into the instrument and take a reading. • Open the instrument lid, slightly rotate the cuvette and take a new reading. • Repeat the last step for the second cuvette until the reading is within 0.01 FNU of the value obtained for the first cuvette. •...
  • Page 14 • Use of an ultrasonic bath; • Heating the sample. Sometimes it is necessary to combine two or more methods for efficient air bubble removal. Note: Each method can alter the sample turbidity, if misused, so they have to be used with caution. APPLICATION OF VACUUM Vacuum works by decreasing the atmospheric pressure.

  • Page 15: Start Up

    S T A R T U P S T A R T U P The HI 88713 Turbidity bench meter is supplied with all necessary accesories Unpack the instrument and place it on a flat surface. Do not place the instrument in dirrect sunlight.

  • Page 16: Range Selection

    T U T O R I A L M O D E The HI 88713 bench-top Turbidity meter has a unique Tutorial Mode that provides additional information to help the unexperienced user during the measurements. The instrument displays a screen, with explanations and confirmation button, when a preparation or other operation has to be performed by the operator.

  • Page 17: Help Mode

    H E L P M O D E H E L P M O D E The HI 88713 bench-top Turbidity meter offers an interactive contextual help that assists the user at any moment. To access help screens, just press HELP.
  • Page 18 • Replace the cap. • Wipe the cuvette thoroughly with a lint-free cloth to remove any fingerprints, dirt or water spots. • Apply silicone oil on the cuvette and wipe with a lint-free cloth to obtain an even film over the entire surface of the cuvette.
  • Page 19 The last averaged value remains on the display at the end of the measurement. The HI 88713 Turbidity bench meter automatically selects the correct turbidity range to display the results with the highest accuracy. In FNU and NTU...

  • Page 20: Calibration Procedure

    C A L I B R A T I O N P R O C E D U R E The HI 88713 Turbidity bench meter is supplied with 5 AMCO Hanna standards (<0.1 FNU, 15 FNU, 100 FNU, 750 FNU and 2000 NTU) that are specially designed for NTU ratio mode.
  • Page 21 CALIBRATION For best results, the measurement techniques must be followed during calibration. If formazin standards are used, mix the cuvettes gently for about 1 minute and then allow the standard to settle for 1 more minute before calibration. Calibration can be performed in up to five points, independently, for each mode. The calibration points are: FNU mode: 0, 15, 100, 750...
  • Page 22 Note: The reading of the first point could be skipped for FNU and NTU modes by pressing “Skip” functional key. In this case, the 0.00 value will be used for calibration. • Place the cuvette for first calibration point: • <0.1 FNU (NTU) calibration cuvette for all modes except FAU mode.
  • Page 23 • If the calibration is terminated, the display will briefly show “Store...” and the two point calibration is saved. The instrument returns to the main screen. THIRD CALIBRATION POINT • Remove the second standard cuvette. • Place the cuvette for third calibration point: 100 FNU (NTU) calibration cuvette for NTU •...
  • Page 24 FOUR-POINT CALIBRATION Remove the third standard cuvette. • Place the cuvette for third calibration point: • 750 FNU (NTU) calibration cuvette for NTU • ratio mode. 750 NTU formazin prepared standard for NTU • non-ratio and FNU modes. 2000 NTU formazin prepared standard for FAU •...
  • Page 25 Note: If necessary, press UP or DOWN key to edit the calibration point value to match the exact value of the standard as measured with a reference turbidimeter. • Close the lid and press “Read” functional key. The display will show the value blinking and the light icon during measurement.

  • Page 26: Good Laboratory Practice (Glp)

    GOOD LABORATORY PRACTICE (GLP) GOOD LABORATORY PRACTICE (GLP) The HI 88713 Turbidity bench meter has a built in complete GLP information. The calibration date and the calibration points are displayed in a comprehensive mode for each range. To display the GLP information, simply press CAL key. A screen with instrument serial number and with information about the calibration is displayed.

  • Page 27: Log & Log Recall

    LOG AND LOG RECALL LOG AND LOG RECALL LOG AND LOG RECALL The HI 88713 Turbidity bench meter has a powerful log function that could store up to 200 records. Each record contains: • the measuring mode, • the reading value, •...

  • Page 28: 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 The instrument’s parameters can be changed in the Setup mode. Some parameters affect the measuring sequence and others are general parameters that change the behaviour or appearence of the instrument.
  • Page 29 Date / Time This option is used to set the instrument’s date and time. Press “Modify” to change the date/time. Press “Left” or ”Right” functional key to highlight the value to be modified (year, month, day, hour, minute or second). Use the UP or DOWN key to change the value. Press “Accept”...

  • Page 30: Pc Interface

    Beeper Option: Enabled or Disabled. This option is used to enable/disable the beeper. Press the “Enable” functional key to enable or disable this option. When enabled, a short beep is heard every time a key is pressed. A long beep alert sounds when the pressed key is not active or an error condition is detected.

  • Page 31: Accessories

    W A R R A N T Y W A R R A N T Y HI 88713 is warranted for two years against defects in workmanship and materials when used for its intended purpose and maintained according to the instructions.
  • Page 32 SALES AND TECHNICAL SERVICE CONTACTS SALES AND TECHNICAL SERVICE CONTACTS SALES AND TECHNICAL SERVICE CONTACTS SALES AND TECHNICAL SERVICE CONTACTS SALES AND TECHNICAL SERVICE CONTACTS Australia: Tel. (03) 9769.0666 • Fax (03) 9769.0699 China: Tel. (10) 88570068 • Fax (10) 88570060 Egypt: Tel.

This manual is also suitable for:

Ha88713-02

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