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Summary of Contents for Hanna Instruments HI97790
- Page 1 INSTRUCTION MANUAL HI97790 Chlorine Photometer Hanna Instruments Inc., 584 Park East Drive, Woonsocket, RI 02895 USA www.hannainst.com...
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Page 2: Table Of Contents
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. Hanna Instruments reserves the right to modify the design, construction, or appearance of its products without advance notice. -
Page 3: Preliminary Examination
Preliminary Examination 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 HI97790C is delivered in a rugged carrying case and is supplied with: •... -
Page 4: Abbreviations
Abbreviations 3. ABBREVIATIONS mg/L milligrams per liter (ppm) Good Laboratory Practice milliliter HDPE High Density Polyethylene °C degree Celsius Light Emitting Diode °F degree Fahrenheit NIST National Institute of Standards and Technology N,N‑Diethyl‑p‑phenylenediamine 4. SPECIFICATIONS Chlorine (All Methods) Range 0.00 to 5.00 mg/L (as Cl Resolution 0.01 mg/L Accuracy ±0.03 mg/L ±3% of reading at 25 °C... -
Page 5: Description
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. The built‑in tutorial mode guides users step‑by‑step through the measurement process. It includes all steps required for sample preparation, the required reagents and quantities. -
Page 6: Functional Description
Description 5.2. FUNCTIONAL DESCRIPTION 1. ON/OFF power button 2. Keypad Free & Total Chlorine 3. Liquid Crystal Display (LCD) 4. Cuvette holder 5. Indexing mark 6. Battery cover H H I I 9 9 7 7 7 7 9 9 0 0 Woonsocket RI USA Made in Romania 3 x 1.5V AA... -
Page 7: Precision & Accuracy
= optical path through the substance 5.5. OPTICAL SYSTEM The internal reference system (reference detector) of the HI97790 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. -
Page 8: General Operations
Check screen guides the user step‑by‑step through the validation process and user calibration (if necessary). ® WARNING: Do not use any solutions or standards other than the Hanna Instruments CAL Check Standards. For accurate validation and calibration results, please perform these at room temperature, 18 to 25 ° C (64.5 to 77.0 ° F). - Page 9 • “OUT OF SPECIFICATION“: A user calibration is not allowed, the measured value is outside of the tolerance window. 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.
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Page 10: Glp
General Operations 6.2. GLP Press the key to enter the menu. Use the functional keys to select GLP and press Select. Good Laboratory Practice (GLP) shows the date and time of the last user calibration (if available) or factory calibration. To erase the last user calibration and to clear the CAL Check™, press Clear and follow the prompts. -
Page 11: General Setup
General Operations 6.4. GENERAL SETUP Press the key to enter the menu. Use the functional keys to select Setup and 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 decrease the value. Press key to return to the Setup menu without saving the new value. - Page 12 General Operations Decimal Separator Option: Comma ( , ) or Period ( . ) Press the functional key to select the desired decimal separator. The decimal separator is used on the measurement screen. Language Press Modify to change the language. Use the functional keys to select the desired language. Press Accept to choose one of the languages installed.
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Page 13: Reagents & Accessories
(and scan) the QR code or use link to download the manual. To exit press the key. 6.7. CONTEXTUAL HELP HI97790 offers an interactive contextual help mode that assists the user at any time. To access the help screen press the key. -
Page 14: Battery Management
6.8. BATTERY MANAGEMENT ® 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: Battery is full. - Page 15 Photometer In order to avoid reagent leaking and to obtain more accurate measurements, close the cuvette first with the supplied HDPE plastic stopper and then the black cap. Whenever the cuvette is placed into the measurement holder, it must be dry outside and free of fingerprints, oil or dirt.
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Page 16: Method Procedure
Method Procedure 8. METHOD PROCEDURE 8.1. FREE AND TOTAL CHLORINE (LIQUID REAGENT) REQUIRED REAGENTS Code Description Quantity HI93701A‑T Total Chlorine Reagent A 3 drops HI93701B‑T Total Chlorine Reagent B 3 drops HI93701C‑T Total Chlorine Reagent C 1 drop Note: HI93701A-T HI93701A-F can be used interchangeably HI93701B-T... - Page 17 Method Procedure • Insert the cuvette into the holder and ensure that the notch on the cap is positioned securely in the groove. • Press Free Cl . The display will show a 1 minute (or user set time) countdown prior to the measurement.
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Page 18: Free Chlorine (Liquid Reagent)
Method Procedure 8.2. FREE CHLORINE (LIQUID REAGENT) Note: Free and Total Chlorine can be measured separately with fresh unreacted samples, following the related procedures, if separate values are desired. REQUIRED REAGENTS Code Description Quantity HI93701A‑F Free Chlorine Reagent A 3 drops HI93701B‑F Free Chlorine Reagent B 3 drops REAGENT SETS... - Page 19 Method Procedure • Insert the cuvette into the holder and ensure that the notch on the cap is positioned securely in the groove. • Press Free Cl . The display will show a 1 minute (or user‑set time) countdown prior to the measurement. Alternatively, wait 1 minute (or set time) then press Free Cl twice.
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Page 20: Total Chlorine (Liquid Reagent)
Method Procedure 8.3. TOTAL CHLORINE (LIQUID REAGENT) REQUIRED REAGENTS Code Description Quantity HI93701A‑T Total Chlorine Reagent A 3 drops HI93701B‑T Total Chlorine Reagent B 3 drops HI93701C‑T Total Chlorine Reagent C 1 drop REAGENT SETS HI93701‑T Total Chlorine Reagent ‑ 300 tests For other accessories see ACCESSORIES section. - Page 21 Method Procedure • Press Total Cl . The display will show a 1 minute (or user‑set time) countdown prior to the measurement. Alternatively, wait 1 minute (or set time) then press Total Cl twice. When the timer ends, the meter will perform the reading.
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Page 22: Warning & Error Descriptions
Date and time settings have been lost. Please reset the values. If the issue persists, please contact Hanna Instruments technical support. English is the only available language. Help function is not available. Restart the meter. If the issue persists, please contact Hanna Instruments technical support. -
Page 23: Battery Replacement
Tutorial mode can be disabled in the Setup menu. A critical error has occurred. Restart the meter. If the issue persists, please contact ® Hanna Instruments technical support. 10. BATTERY REPLACEMENT To replace the instrument’s batteries, follow these steps: •... -
Page 24: Certification
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. When shipping any meter, make sure it is properly packed for complete protection .
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