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Summary of Contents for Hanna Instruments HI97736
- Page 1 HI97736 Total Hardness & pH Photometer...
- Page 2 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.
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Page 3: Table Of Contents
TABLE OF CONTENTS 1. PRELIMINARY EXAMINATION ................4 2. SAFETY MEASURES ..................5 3. ABBREVIATIONS ................... 5 4. SPECIFICATIONS .................... 6 5. DESCRIPTION ....................7 5.1. GENERAL DESCRIPTION & INTENDED USE ..........7 5.2. FUNCTIONAL DESCRIPTION ..............8 5.3. PRECISION & ACCURACY ............... 9 5.4. -
Page 4: 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 HI97736C is delivered in a rugged carrying case and is supplied with: •... -
Page 5: Safety Measures
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. •... -
Page 6: Specifications
4. SPECIFICATIONS Magnesium Hardness 0.00 to 2.00 mg/L (as CaCO Range Calcium Hardness 0.00 to 2.70 mg/L (as CaCO Total Hardness 0.00 to 4.70 mg/L (as CaCO Resolution 0.01 mg/L Total Hardness Accuracy (all) ±0.11 mg/L ±5% of reading at 25 °C Adaptation of the Standard Methods for Method the Examination of Water and Wastewater,... -
Page 7: 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. -
Page 8: Functional Description
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. -
Page 9: Precision & Accuracy
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 and is method specific. Although good precision suggests good accuracy, precise results can be inaccurate. -
Page 10: Optical System
5.5. OPTICAL SYSTEM Instrument Block Diagram The internal reference system (reference detector) of the HI97736 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 11: General Operations
6. GENERAL OPERATIONS 6.1. METER VALIDATION: CAL CHECK & CALIBRATION Validation of the HI97736 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). - Page 12 • “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 13: Chemical Formula & Unit Conversion
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 by pressing and use the functional keys to select Chemical Form. -
Page 14: General Setup
Use the functional keys to highlight a log and press Info to view additional information about the log. From this screen Next and Previous can be used to view other logs. Press Delete to erase logged data. After pressing Delete a prompt on display is asking for confirmation. - Page 15 Date & Time Press Modify to change the date and time. Press the functional keys to highlight the value to be modified (year, month, day, hour, minute or second). Press Edit to modify the highlighted value. Use the functional keys to change the value. Press Accept to confirm or the key to return to the previous screen.
- Page 16 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. Beeper Option: Enable or Disable 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 is detected.
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Page 17: Reagents & Accessories
Reagents / Accessories and press Select to access a list of reagents and accessories. To exit press the key. 6.7. CONTEXTUAL HELP HI97736 offers an interactive contextual help mode that assists the user at any time. To access the help screen press the key. -
Page 18: 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: •... -
Page 19: 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 20: Cylinder & Cuvette Preparation
7.3. CUVETTE PREPARATION Proper mixing is very important for reproducibility of the measurements. The proper mixing technique is listed in the method procedure. 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. - Page 21 Do not let the reacted sample stand too long after reagent has been added. For best accuracy, respect the timings described in the method. It is possible to take multiple readings in a row, but it is recommended to take a new zero reading for each sample and to use the same cuvette for zeroing and measurement when possible.
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Page 22: 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 - 100 tests HI93719-03... - Page 23 • Fill three cuvettes with 10 mL of reacted sample (up to the mark). ×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).
- Page 24 • Remove the cuvette. • Insert the cuvette #2 (magnesium hardness sample) into the holder and ensure that the notch on the cap is positioned securely in the groove. • Press Read 1. The instrument displays concentration in mg/L of magnesium hardness (CaCO •...
- Page 25 key and use the functional keys to select Chemical Form. • Press the • Use the functional keys and press Select to change the displayed chemical formula to French degrees (°f), German degrees (°dH) and English degrees (°E). INTERFERENCES Interference may be caused by: •...
- Page 26 8.2. pH REQUIRED REAGENTS Code Description Quantity HI93710-0 pH Reagent 5 drops REAGENT SETS HI93710-01 pH Reagent - 100 tests HI93710-03 pH Reagent - 300 tests For other accessories see ACCESSORIES section. MEASUREMENT PROCEDURE • Select the method using the procedure described in the METHOD SELECTION section.
- Page 27 • Remove the cuvette. • Add 5 drops of HI93710-0 pH Reagent indicator. Replace the plastic stopper and ×5 the cap. Swirl to mix the solution. • Insert the cuvette into the holder and ensure that the notch on the cap is positioned securely in the groove.
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Page 28: Warning & Error Descriptions
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. - Page 29 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.
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Page 30: Battery Replacement
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. •... -
Page 31: Accessories
11. ACCESSORIES 11.1. REAGENT SETS Code Description HI93710-01 pH Reagent - 100 tests HI93710-03 pH Reagent - 300 tests HI93719-01 Magnesium Hardness Reagent - 100 tests HI93719-03 Magnesium Hardness Reagent - 300 tests 11.2. OTHER ACCESSORIES Code Description HI7101413 blue carrying case for HI977xx and 3 CAL Check cuvettes HI731318 cloth for wiping cuvettes (4 pcs.) HI731331... -
Page 32: Certification
CERTIFICATION All Hanna Instruments conform to the CE European Directives. RoHS compliant Disposal of Electrical & Electronic Equipment. The product should not be treated as household waste. Instead hand it over to the appropriate collection point for the recycling of electrical and electronic equipment which will conserve natural resources. -
Page 33: Warranty
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. - Page 34 MAN97736 12/19...
- Page 35 Hanna Instruments reserves the right to modify the design, construction or appearance of its products without advance notice.
- Page 36 World Headquarters Hanna Instruments Inc. Highland Industrial Park 584 Park East Drive Woonsocket, RI 02895 USA www.hannainst.com MAN97736 Printed in ROMANIA...
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