Hanna Instruments HI 83749 Instruction Manual
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Hanna Instruments HI 83749 Instruction Manual

Turbidity & bentocheck
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SALES AND TECHNICAL SERVICE CONTACTS
Australia:
Tel. (03) 9769.0666 • Fax (03) 9769.0699
China:
Tel. (10) 88570068 • Fax (10) 88570060
Egypt:
Tel. & Fax (02) 2758.683
Germany:
Tel. (07851) 9129-0 • Fax (07851) 9129-99
Greece:
Tel. (210) 823.5192 • Fax (210) 884.0210
Indonesia:
Tel. (21) 4584.2941 • Fax (21) 4584.2942
Japan:
Tel. (03) 3258.9565 • Fax (03) 3258.9567
Korea:
Tel. (02) 2278.5147 • Fax (02) 2264.1729
Malaysia:
Tel. (603) 5638.9940 • Fax (603) 5638.9829
Singapore:
Tel. 6296.7118 • Fax 6291.6906
South Africa:
Tel. (011) 615.6076 • Fax (011) 615.8582
Taiwan:
Tel. 886.2.2739.3014 • Fax 886.2.2739.2983
Thailand:
Tel. (662) 619.0708.11 • Fax (662) 619.0061
United Kingdom:
Tel. (01525) 850.855 • Fax (01525) 853.668
USA:
Tel. (401) 765.7500 • Fax (401) 765.7575
For e-mail contacts and a complete list of Sales and Technical offices, please see
www.hannainst.com.
40
Instruction Manual
HI 83749
Turbidity & Bentocheck
w w w. h a n n a i n s t . c o m
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Summary of Contents for Hanna Instruments HI 83749

  • Page 1 SALES AND TECHNICAL SERVICE CONTACTS Instruction Manual Australia: Tel. (03) 9769.0666 • Fax (03) 9769.0699 HI 83749 China: Tel. (10) 88570068 • Fax (10) 88570060 Turbidity & Bentocheck Egypt: Tel. & Fax (02) 2758.683 Germany: Tel. (07851) 9129-0 • Fax (07851) 9129-99 Greece: Tel.

  • Page 2: Table Of Contents

    To validate your warranty, fill out and return the enclosed warranty card within 14 days from the Hanna Instruments reserves the right to modify the design, construction and appearance of its products without date of purchase.

  • Page 3: Preliminary Examination

    PC INTERFACE PRELIMINARY EXAMINATION Please examine this product carefully. Make sure the instrument is not damaged. If any damage To fully use the instrument tag identification system function, the measured data has to be has occurred during the shipment, please notify your dealer. downloaded to a computer.

  • Page 4: General Description

    GENERAL DESCRIPTION GENERAL DESCRIPTION USING AN AC ADAPTER In laboratory you can use an AC adapter to power the HI 83749. Simply connect the AC adapter to the The HI 83749 is an auto diagnostic microprocessor meter that benefits from Hanna’s years of experience instrument (see Connectors Description, page 9).

  • Page 5: Abbreviations

    BATTERIES MANAGEMENT If protein instability is detected, a next test can help defining the right amount of bentonite to be added for improving protein stability. It is important not to overdose bentonite, avoiding stripping For field measurements, HI 83749 is powered by 4 AA batteries. wine flavour, body, and significant loss of color, especially in young red wines.

  • Page 6: Principle Of Operation

    PRINCIPLE OF OPERATION LCD BACKLIGHT A light beam that passes through the sample is scattered in all directions. The intensity and pattern of The LCD can be illuminated to allow the user to see the readings even in dark the scattered light is affected by many variables like wavelenght of the incident light, particle size, environments.

  • Page 7: Specifications

    SPECIFICATIONS SET INSTRUMENT ID The instrument ID is a four digit number that can Range 0.00 to 9.99 NTU be edited by the user. The instrument ID is 10.0 to 99.9 NTU downloaded on the PC application, together with 100 to 1200 NTU the logged data.

  • Page 8: Functional Description

    FUNCTIONAL DESCRIPTION • Press LOG/CFM or READ to start editing the day value. The day value will start blinking. INSTRUMENT DESCRIPTION • Press the UP or DOWN keys to set the day value. Note: to edit the year again, after the day was set, press READ .
  • Page 9 SHOW / HIDE THE TIME 11) CAL/RCL: this is a bi-functional key. Just press to enter/exit calibration or in setup mode to start/stop editing a parameter. Hold the key for 3 seconds to enter/exit viewing log content. You can choose between showing or hiding the 12) LOG/CFM: press to save a record or to confirm the selected option.

  • Page 10: General Tips For An Accurate Measurement

    GENERAL TIPS FOR AN ACCURATE MEASUREMENT SET EPA COMPLIANCE MODE When EPA compliance reading is on, “EPA” message The instructions listed below should be carefully followed to ensure best accuracy. is displayed on the secondary LCD and the reported GENERAL TIPS values are rounded to meet EPA reporting •...
  • Page 11 REMOVING AIR BUBBLES • Add HI 83749-0 Bentocheck reagent, mix and wait for 1 minute. Then take a new reading (T2). Air bubbles present in the sample will cause erroneous high turbidity readings. • To remove air bubbles fill the cuvet with wine sample and close the cap tightly. Shake the •...

  • Page 12: Calibration Procedure

    SETUP CALIBRATION PROCEDURE The Setup mode allows the user to view and modify the instrument parameters. It is recommended to calibrate the meter only with Hanna ready-to-use calibration standard solutions. The blinking “CAL” tag appears during setup mode suggesting to press CAL for editing parameters. Alternatively, formazin standards can be used.
  • Page 13 • Remove the <0,10 NTU standard cuvet and place the 15.0 NTU standard cuvet into the • Third calibration point (if available). holder. • Close the lid and press READ . “----” and the • Fourth calibration point (if available). “Lamp and Read Status”...
  • Page 14 • Remove the 100 NTU standard cuvet from the • The instrument asks for confirmation. Press the meter and insert the 500 NTU standard cuvet LOG/CFM key to confirm all records are deleted. into the holder. To abort the delete function, press READ instead of LOG/CFM.
  • Page 15 DELETE CALIBRATION HI 83749 is factory calibrated. It is possible to • Measurement date in YYYY.MM.DD format. restore factory calibration by deleting last performed calibration. To delete last calibration, follow the next steps: • Measurement time in hh:mm format. • Enter the GLP feature by pressing GLP . The date of the last calibration will be displayed on the LCD (e.g.

  • Page 16: Turbidity Measurement

    TURBIDITY MEASUREMENT VIEW LOGGED DATA The stored records can be viewed at any moment Note: For wine analysis it is recommended to by keep CAL/RCL key pressed for a few seconds. To work always with the AVG mode on. return to normal measurement mode, press RCL again .
  • Page 17 LOGGING AVG (SIGNAL AVERAGE MODE) It is recommanded to select this measurement mode when you work with unstable samples that HI 83749 has a log space for up to 200 records. With each measurement, the date, time and tag ID contain suspended particles of different dimensions.

  • Page 18: Bentocheck (Protein Stability Test)

    BENTOCHECK (PROTEIN STABILITY TEST) • The final displayed value is the averaged Sample #1 reading of turbidity in NTU. e.g. • Turn the instrument ON by pressing ON/OFF. This is T2. Record the value. When the LCD displays “----”, the instrument is ready.
  • Page 19 • Replace the cap. Invert several times to mix and then wait for 1 minute. Note: to get more representative results of long • Insert the cuvet into the instrument and close term protein stability, HANNA Instruments ® the lid. recommends to filter the wine sample first through a 0.45 micron filterdisc before analysis.
  • Page 20 • Wait for 15 minutes to allow suspended matter DETERMINATION OF BENTONITE REQUIREMENT to settle. SAMPLE PREPARATION • Fill 4 HANNA vials with 25 mL of unfiltered wine sample. • Fold a filter disc twice as shown in the figure. •...

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