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Related Manuals for Hanna Instruments HI97728
Summary of Contents for Hanna Instruments HI97728
- Page 1 HI97728 Nitrate Photometer...
- 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.
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Page 3: Table Of Contents
1. PRELIMINARY EXAMINATION ................4 2. SAFETY MEASURES ..................4 3. SPECIFICATIONS .................... 5 4. ABBREVIATIONS ................... 5 5. DESCRIPTION ....................6 5.1. GENERAL DESCRIPTION AND INTENDED USE ........... 6 5.2. FUNCTIONAL DESCRIPTION ..............7 5.3. PRECISION AND ACCURACY ..............8 5.4. -
Page 4: Preliminary Examination
• Instruction manual • Meter quality certificate • CAL Check standard certificate Each HI97728 is delivered in a cardboard box and is supplied with: • Sample cuvette (2 pcs.) • Sample cuvette cap (2 pcs.) • Plastic stopper (2 pcs.) •... -
Page 5: Specifications
3. SPECIFICATIONS Range 0.0 to 30.0 mg/L (as NO Resolution 0.1 mg/L Nitrate Accuracy ±0.5 mg/L ±10% of reading at 25 °C Method Adaptation of Cadmium Reduction method Light source Light Emitting Diode Bandpass filter 525 nm Bandpass filter 8 nm bandwidth Measurement System... -
Page 6: Description
5. DESCRIPTION 5.1. GENERAL DESCRIPTION AND INTENDED USE HI97728 is an auto-diagnostic portable meter that benefits from Hanna’s years of experience as a manufacturer of analytical instruments. It has an advanced optical system that uses a Light Emitting Diode (LED) and a narrow band interference filter that allows for accurate and repeatable readings. -
Page 7: 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 keys to perform the function displayed above them on the LCD. Press and hold to power off/on. -
Page 8: Precision And Accuracy
5.3. PRECISION AND 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. -
Page 9: Optical System
5.5. OPTICAL SYSTEM Instrument Block Diagram The internal reference system (reference detector) of the HI97728 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 10 To perform a CAL Check: 1. Press CAL Check key from measurement mode. The “Not Available“ message or the date/time and status of the last CAL Check will be displayed on the screen. 2. Press the Check key to start a new CAL Check. Press key at any time to abort the validation process.
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Page 11: Chemical Formula/Unit Conversion
- “OUT OF SPECIFICATION“ and the Calibration key is available: The measured value is near the expected value. To update the user calibration press Calibrate. Press Accept to confirm or Cancel to return to the previous screen. - “OUT OF SPECIFICATION“: A user calibration is not allowed, the measured value is outside of the tolerance window. -
Page 12: Logging Data/Log Recall
6.4. 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. - Page 13 Backlight Values: 0 to 100 % Press the Modify key to access the backlight intensity. Use the keys to increase or decrease the value. Press the Accept key to confirm or the key to return to the Setup menu without saving the new value. Contrast Values: 0 to 100 % Press the Modify key to change the display’s contrast.
- Page 14 Date Format Press the Modify key to change the date format. Use the keys to select the desired format. Press the Accept key to confirm or the key to return to the Setup menu without saving the new format. Decimal Separator Option: Comma ( , ) or Period ( .
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Page 15: Reagents/Accessories
Reagents/Accessories and press Select to access a list of reagents and accessories. To exit press key. 6.7. CONTEXTUAL HELP HI97728 offers an interactive contextual help mode that assists the user at any time. To access the help screen press the key. -
Page 16: Battery Management
6.8. BATTERY MANAGEMENT The meter will perform an auto-diagnostic test when it is powered on. During this test, the Hanna ® logo will appear on the LCD. After 5 seconds, if the test was successful, the last method selected will appear on the display. The battery icon on the LCD will indicate the battery status: - battery full - battery below 10%, replace the batteries soon... -
Page 17: Cuvette Preparation
7.2. CUVETTE PREPARATION Proper mixing is very important for reproducibility of the measurements. The proper mixing technique for each method is listed in the method procedure. (a) Invert the cuvette a couple of times or for a specified time: hold the cuvette in the vertical position. - Page 18 Whenever the cuvette is inserted into the measurement holder, it must be dry outside and free of fingerprints, oil or dirt. Wipe it thoroughly with HI731318 or a lint-free cloth 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.
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Page 19: Method Procedure
8. METHOD PROCEDURE REQUIRED REAGENTS Code Description Quantity HI93728-0 Nitrate Reagent 1 packet REAGENT SETS HI93728-01 Nitrate Reagent - 100 tests HI93728-03 Nitrate Reagent - 300 tests For other accessories see page 24. MEASUREMENT PROCEDURE Note: If tutorial mode is disabled follow the measurement procedure below. If the tutorial mode is enabled, press Measure and follow the messages on the screen. - Page 20 • Shake vigorously up and down for exactly 10 seconds. Continue to mix by inverting the cuvette gently for 50 seconds, while taking care not to induce air bubbles. Powder will not completely dissolve. Time and method of shaking could sensitively affect the measurement.
- Page 21 • Press the Select key to convert the result to mg/L of nitrate (NO 3¯ • Press to return to the measurement screen. INTERFERENCES Interference may be caused by: Ammonia and amines, as urea and primary aliphatic amines Chloride above 100 ppm Chlorine above 2 ppm Copper Iron(III)
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Page 22: Error Descriptions
9. ERROR DESCRIPTIONS The instrument shows clear warning messages when erroneous conditions appear and when measured values are outside the expected range. These messages are described below. No Light: The light source is not functioning properly. Light Leak: There is an excess amount of ambient light reaching the detector. -
Page 23: 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 24: Accessories
HI977xx and 2 CAL Check cuvettes HI731318 cloth for wiping cuvettes (4 pcs.) HI731331 glass cuvettes (4 pcs.) HI731336N cap for cuvette (4 pcs.) HI93703-50 cuvette cleaning solution (230 mL) ® HI97728-11 CAL Check standards for nitrate - cuvette kit... -
Page 25: Certification
Certification All Hanna Instruments conform to the CE European Directives. 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 26: Recommendations For Users
Recommendations for Before using this product, make sure it is entirely suitable for your specific application and for the users environment in which it is used. Any variation introduced by the user to the supplied equipment may degrade the meter’s performance. For yours and the meter’s safety do not use or store the meter in hazardous environments. -
Page 27: Warranty
Technical Service department and then send it with shipping costs prepaid. When shipping any meter, make sure it is properly packed for complete protection. Hanna Instruments reserves the right to modify the design, construction or appearance of its products without advance notice. - Page 28 World Headquarters Hanna Instruments Inc. Highland Industrial Park 584 Park East Drive Woonsocket, RI 02895 USA www.hannainst.com Local Office Hanna Instruments Inc. Highland Industrial Park 584 Park East Drive Woonsocket, RI 02895 USA Phone: 800.426.6287 Fax: 401.765.7575 e-mail: tech@hannainst.com MAN97728...