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If you need additional technical information, do not hesitate to e‑mail us at tech@hannainst.com or view our worldwide contact list at www.hannainst.com. All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of the copyright owner, Hanna Instruments Inc., Woonsocket, Rhode Island, 02895, USA.
1. PRELIMINARY EXAMINATION Remove the instrument and accessories from the packaging and examine it carefully. For further assistance, please contact your local Hanna Instruments Office or email us at tech@hannainst.com. Each HI97732C is delivered in a rugged carrying case and is supplied with: •...
2. SAFETY MEASURES • The chemicals contained in the reagent kits may be hazardous if improperly handled. • Read the Safety Data Sheets (SDS) before performing tests. • Safety equipment: Wear suitable eye protection and clothing when required, and follow instructions carefully. •...
4. SPECIFICATIONS Range 0.0 to 10.0 mg/L (as O Resolution 0.1 mg/L Accuracy ±0.4 mg/L ±3% of reading at 25 °C Nickel Adaptation of Standard Methods for the Method Examination of Water and Wastewater, Edition, Azide Modified Winkler Method Light source Light Emitting Diode Bandpass filter 466 nm...
With the CAL Check™ functionality, users are able to validate the performance of the instrument at any time and apply a user calibration (if necessary). Hanna Instruments CAL Check cuvettes are made with NIST traceable standards.
5.2. FUNCTIONAL DESCRIPTION 1. ON/OFF power button 3. Liquid Crystal Display (LCD) 5. Indexing mark 2. Keypad 4. Cuvette holder 6. Battery cover Keypad Description The keypad contains 3 direct keys and 3 functional keys with the following functions: Press the functional key to perform the function displayed above it on the LCD. Press and hold to power off/on.
5.3. PRECISION & ACCURACY Precision is how closely repeated measurements are to one another. Precision is usually expressed as standard deviation (SD). Accuracy is defined as the closeness of a test result to the true value. Although good precision suggests good accuracy, precise results can be inaccurate. The figure explains these definitions.
5.5. OPTICAL SYSTEM Instrument Block Diagram The internal reference system (reference detector) of the HI97732 photometer compensates for any drifts due to power fluctuations or ambient temperature changes, providing a stable source of light for your blank (zero) measurement and sample measurement.
6. GENERAL OPERATIONS 6.1. METER VALIDATION: CAL CHECK & CALIBRATION Validation of the HI97732 involves verifying the concentration of the certified CAL Check standards. The CAL Check screen guides the user step-by-step through the validation process and user calibration (if necessary).
Check the certified value, expiration date and clean the outside of the cuvette. Repeat the CAL Check procedure. If this error continues contact your nearest Hanna Instruments Customer Service Center. 6.2. GLP Press the key to enter the menu.
6.3. LOGGING DATA & LOG RECALL The instrument features a data autolog function to help users keep track of all measurements. Every time a measurement is made the data is automatically saved. The data log can hold 50 individual measurements. When the data log is full (50 data points) the meter will rewrite the oldest data point.
6.4. GENERAL SETUP key to enter the menu. Use the functional keys to select Setup and Press the press Select. Use the functional keys to highlight desired option. Backlight Option: 0 to 100 % Press Modify to access the backlight intensity. Use the functional keys to increase or key to return to the Setup decrease the value.
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Date Format Press Modify to change the date format. Use the functional keys to select the desired key to return to the Setup menu without format. Press Accept to confirm or the saving the new format. Decimal Separator Option: Comma ( , ) or Period ( . ) Press the functional key to select the desired decimal separator.
Reagents / Accessories and press Select to access a list of reagents and accessories. To exit press the key. 6.6. CONTEXTUAL HELP HI97732 offers an interactive contextual help mode that assists the user at any time. To access the help screen press the key.
The meter will perform an auto-diagnostic test when it is powered on. During this test, ® the Hanna Instruments logo will appear on the LCD. If the auto-diagnostic test was successful, the meter is ready for use. The battery icon on the LCD will indicate the battery status: •...
7. PHOTOMETER 7.1. PROPER USE OF DROPPER BOTTLE 1. Tap the dropper on the table several times and wipe the outside of the tip with a cloth. 2. Always keep the dropper bottle in a vertical position while dosing the reagent. 7.2.
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Whenever the cuvette is placed into the measurement holder, it must be dry outside and free of fingerprints, oil or dirt. Wipe it thoroughly with HI731318 microfiber cleaning cloth or a lint-free wipe prior to insertion. Shaking the cuvette can generate bubbles in the sample, causing higher readings. To obtain accurate measurements, remove such bubbles by swirling or by gently tapping the cuvette.
8. METHOD PROCEDURE REQUIRED REAGENTS Code Description Quantity HI93732A-0 Dissolved Oxygen Reagent A 5 drops HI93732B-0 Dissolved Oxygen Reagent B 5 drops HI93732C-0 Dissolved Oxygen Reagent C 10 drops REAGENT SETS HI93732-01 Dissolved Oxygen Reagent - 100 tests HI93732-03 Dissolved Oxygen Reagent - 300 tests For other accessories see ACCESSORIES section.
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• Replace the cap and invert the bottle until the settled flocculating agent dissolves completely. The sample is ready for measurement when it is yellow and completely clear. • Fill the first cuvette (#1) with 10 mL of the unreacted sample (up to the mark).
Ensure that the notch on the cap is positioned securely in the groove before performing any measurements. If the issue persists, please contact Hanna Instruments technical support. The sample and the zero cuvettes are inverted. Swap the cuvettes and repeat the measurement.
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English is the only available language. Help function is not available. Restart the meter. If the issue persists, please contact Hanna Instruments technical support. Battery level is too low for the meter to function properly. Replace the batteries with new ones.
10. BATTERY REPLACEMENT To replace the instrument’s batteries, follow these steps: • Turn the instrument off by pressing and holding the key. • Remove the battery cover by turning it counterclockwise. • Remove the old batteries, replace them with three new 1.5V AA batteries. •...
If the repair is not covered by the warranty, you will be notified of the charges incurred. If the meter is to be returned to Hanna Instruments, first obtain a Returned Goods Authorization (RGA) number from the Technical Service department and then send it with shipping costs prepaid.
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Hanna Instruments reserves the right to modify the design, construction or appearance of its products without advance notice.
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World Headquarters Hanna Instruments Inc. Highland Industrial Park 584 Park East Drive Woonsocket, RI 02895 USA www.hannainst.com MAN97732 Printed in ROMANIA...