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Summary of Contents for Hanna Instruments HI97741
- Page 1 INSTRUCTION MANUAL HI97741 Total Hardness & Iron Low Range Photometer Hanna Instruments Inc., 584 Park East Drive, Woonsocket, RI 02895 USA www.hannainst.com...
- Page 2 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 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 HI97741C is delivered in a rugged carrying case and is supplied with: •...
- Page 4 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 Low Range US Environmental Protection Agency NIST National Institute of Standards and Technology 4. SPECIFICATIONS Total Hardness Magnesium Hardness 0.00 to 2.00 mg/L (as CaCO Range...
- Page 5 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.
- Page 6 3. Liquid Crystal Display (LCD) 4. Cuvette holder 5. Indexing mark 6. Battery cover HI97741 SN: XXXXXXXXXXXX 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.
- Page 7 = optical path through the substance 5.5. OPTICAL SYSTEM The internal reference system (reference detector) of the HI97741 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 (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.
- Page 10 General Operations 6.2. CHEMICAL FORMULA & UNIT CONVERSION Chemical formula and unit conversion factors are pre‑programmed into the instrument and are method specific. In order to view the displayed result in the desired chemical formula for the total hardness method enter menu and use the functional keys to select Chemical Form.
- Page 11 General Operations Press Delete to erase logged data. After pressing Delete a prompt on display is asking for confirmation. Press No or the key to return to the previous screen. Press Yes to delete selected log. Press Del All to erase all the logged data. If Del All is pressed follow the prompt to confirm. Press Yes to delete all logged data, No or the key to return to the log recall.
- Page 12 General Operations Time Format Option: AM/PM or 24-hour Press the functional key to select the desired time format. Date Format Press Modify to change the date format. Use the functional keys to select the desired format. Press Accept to key to return to the Setup menu without saving the new format. confirm or the Decimal Separator Option: Comma ( , ) or Period ( .
- Page 13 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 14 Photometer 7. PHOTOMETER 7.1. METHOD SELECTION Press Methods when in measurement mode to access the list of methods. Use the functional keys to highlight the desired method then press Select. The selected method will be saved when the instrument is powered off. 7.2.
- Page 15 Photometer (b) The mixing method is indicated with “swirl“ using one of the following icons: 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.
- Page 16 Method Procedure 8. METHOD PROCEDURE 8.1. TOTAL HARDNESS REQUIRED REAGENTS Code Description Quantity HI93719A‑0 Magnesium Hardness Reagent A 0.5 mL HI93719B‑0 Magnesium Hardness Reagent B 0.5 mL HI93719C‑0 Magnesium Hardness Reagent C 1 drop HI93719D‑0 Magnesium Hardness Reagent D 1 drop REAGENT SETS HI93719‑01 Magnesium Hardness Reagent ‑...
- Page 17 Method Procedure ×1 • Add 1 drop of HI93719C‑0 Magnesium Hardness Reagent C to one cuvette. Replace the plastic stopper and the cap. Swirl to mix the solution. This is the zero (cuvette #1). ×1 • Add 1 drop of HI93719D‑0 Magnesium Hardness Reagent D to the second cuvette.
- Page 18 Method Procedure • Insert the cuvette #3 (calcium hardness sample) into the holder and ensure that the notch on the cap is positioned securely in the groove. • Press Read 2. The instrument displays concentration in mg/L of calcium hardness (CaCO •...
- Page 19 Method Procedure 8.2. IRON LOW RANGE REQUIRED REAGENTS Code Description Quantity HI93746‑0 Iron LR Reagent 2 packets REAGENT SETS HI93746‑01 Iron LR Reagent ‑ 50 tests HI93746‑03 Iron LR Reagent ‑ 150 tests For other accessories see ACCESSORIES section. MEASUREMENT PROCEDURE •...
- Page 20 Method Procedure • Remove the cuvette. • Fill another graduated mixing cylinder up to the 25 mL mark with the sample. 25 mL • Add one packet of HI93746‑0 Iron LR Reagent, close the cylinder with a rubber stopper and shake vigorously for 30 seconds. This is the reacted sample.
- Page 21 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 22 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 23 Accessories 11. ACCESSORIES 11.1. REAGENT SETS Ordering Information Description HI93719-01 Magnesium Hardness Reagent ‑ 100 tests HI93719-03 Magnesium Hardness Reagent ‑ 300 tests HI93746-01 Iron LR Reagent ‑ 50 tests HI93746-03 Iron LR Reagent ‑ 150 tests 11.2. OTHER ACCESSORIES Ordering Information Description HI7101413...
- Page 24 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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