Hanna Instruments 96770C User's Manual
Contents
1. EORR 23 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 2 PRELIMINARY EXAMINATION Please examine this product carefully Make sure that the instrument is not damaged If any damage occurred during shipment please notify your Dealer Each 96770 lon Selective Meter is supplied complete with Two Sample Cuvets and Caps e Two CAL CHECK standard cuvets 96770 11 with Quality Certificate e OV Battery Scissors Tissues for wiping cuvets Instrument Quality Certificate Instruction Manual and Quick Reference Guide Rigid carrying case CAL CHECK Standard Cuvets Cut out space for reagent powder packets Instrument HI 96770 11 HI 96770 0 96770B 0 96770C 0 CUVET HOLDER PROTECTION 196770 ae M Scissors Tissues for wiping cuvets 9V et Sample cuvets Note Save all packing material until you are sure that the instrument works correctly Any defective item must be returned in its original packing GENERAL DESCRIPTION The 96770 is an auto diagnostic portable microprocessor meter that benefits from HNNINN s years of experience as a manufacturer of analytical instruments It has the advanced optical system based on a Light Emitti2. CAL CHECK 6 GLP ON B E H 1 OFF m Bgl CLRNOLIGHT HIGH ZEROINV CFM CAP STDLOW READ COOLING DATE wee 8888 Press ZERO CFM and the instrument status indicator will appear depending on the measurement phase After few seconds the display will show 0 0 The meter is now zeroed and ready for measurement Remove the cuvet Add the content of one packet of 96770A 0 Silica HR reagent A and shake until complete dissolution Remove the cap and add the content of one packet of HI 96770B 0 Silica HR reagent B Replace the cap and shake vigorously until complete dissolution Press and hold READ TIMER for three seconds The display will show the countdown The beeper indicates the end of countdown period Alternatively wait for 10 minutes Remove the cap Add the content of one packet of HI 96770C 0 Silica HR reagent C and shake vigorously until complete dissolution Replace the cuvet into the cuvet holder and ensure that the notch on the cap is positioned securely into the groove Wait for 2 minutes and then press READ TIMER The instrument status indicator will appear depending on the measurement phase The instrument directly displays concentration in mg L of silica Si0 on the 0 To convert the reading to mg L of silicon Si multiply the reading by 0 467 INTERFERENCES Fe and Fe inter
3. LIGHT HIGH Err LIGHT LOW rr a NOLIGHT b on sample reading Err ZEROINV READ Light High There is too much light to perform a measurement Please check the preparation of the zero cuvet Light Low There is not enough light to perform a measurement Please check the preparation of the zero cuvet No Light The instrument cannot adjust the light level Please check that the samples does not contain any debris Inverted cuvets The sample and the zero cuvet are inverted Zero zero reading was not taken Follow the instructions of the measurement procedure for zeroing the meter Under range A blinking 0 indicates that the silica content in the sample is less than 0 mg L 7 Over Range A flashing value of the maximum concentration indicates an over range condition The concentration of the N sample is beyond the programmed range dilute the sample and re run the test uj 2 during calibration procedure ca Standard Low The standard reading is out of range Err STDLOW ca Standard High The standard reading is out of range HIGH STD d other errors and warnings Cap error the cuvet is not inserted correctly and an excess ambient E rr light is reaching the detector If the cover is properly installed then contact your dealer the nearest Hanna Customer Service Center Battery low
4. The battery voltage is getting low and the battery needs to be replaced Dead battery This indicates that the battery is dead and must be H d replaced Once this indication is displayed the meter will lock up Change the battery and restart the meter GENERAL TIPS FOR ACCURATE MEASUREMENT The instructions listed below should be carefully followed during testing to ensure best accuracy For a correct filling of the cuvet the liquid in the cuvet forms concavity on the top the bottom of this concavity must be at the same level of the 10 mL mark 10 gt Proper use of the powder reagent packet a use scissors to open the powder packet b push the edges of the packet to form a spout c pour out the content of the packet Reagent Reggent i a b It is important that the sample does not contain any debris This would corrupt the reading Each time the cuvet is used the cap must be tightened to the same degree Whenever the cuvet is placed into the measurement cell it must be dry outside and completely free of fingerprints oil or dirt Wipe it thoroughly with HI 731318 or a lint free cloth prior to insertion Shaking the cuvet can generate bubbles in the sample causing higher readings To obtain accurate measurements remove such bubbles by swirling or by gently tapping the cuvet It is possible to take multip
5. domestic and industrial wastes and Standard Method 4500 510 The reagents are in powder form and are supplied in packets The amount of reagent is precisely dosed to ensure the maximum repeatability ABBREVIATIONS C degree Celsius EPA US Environmental Protection Agency F degree Fahrenheit LCD Liquid Crystal Display mg L milligrams per liter mg L is equivalent to ppm part per million mL milliliter mV millivolts SPECIFICATIONS Range 0 to 200 mg L Resolution 1 mg L Precision 5 mg L 100 mg L Typical EMC Deviation 1 mg L Light Source Light Emitting Diode Light Detector Silicon Photocell with narrow band interference filter 466 nm Method Adaptation of the USEPA METHOD 370 1 for to drinking surface and saline waters domestic and industrial wastes and Standard Method 4500 510 C The reaction between silica and the reagents causes a yellow tint in the sample Environment 0 to 50 C 32 122 F max 95 RH non condensing Battery Type 1x9 volt Auto Shut off After 10 of non use in measurement mode after 1 hour of non use in calibration mode with last reading reminder Dimensions 192 x 102 x 67 mm 7 6 x 4 x 2 6 Weight 290 g 10 oz REQUIRED REAGENTS Code Description Quantity test 96770A 0 Silica HR Reagent A 1 packet 96770B 0 Silica HR Reagent 1 packet 96770C 0 Silica HR Reagent C 1 packet PRECISION AND ACCURACY Precision is how closely repeated measurements a
6. Instruction Manual HI 96770C Silica High Range ISM rie PRIN instruments Tis timens Compliance with the Directives www hannains Dear Customer Thank you for choosing HNNININ product This manual will provide you with the necessary information for the correct use of the instrument Please read it carefully before using the meter If you need additional technical information do not hesitate to e mail us at tech hannainst com This instrument is in compliance with C directives TABLE OF CONTENTS PRELIMINARY EXAMINATION ciet tan 3 CENERALE DESCRIPTION tiet 4 ABBREVIATIONS tees teet to onini bn bins 4 5 PREGISIBNANDE ACCURACY 5 PRINCIPLE OB OTE RATION 6 FUNCTIONAL DESCRIPTION btt ie 7 ERRORS AND WARNINGS i centes tei ec aac is oe a la 9 GENERAL TIPS FOR AN ACCURATE MEASUREMENT nnn STAR IUD et Leach seth ce 12 MEASUREMENT PROCEDURE 12 VALIDATION PROCEDURES oet epa RR 15 CALIBRATION PROCEDURE 17 D cc E a cars EIN IM EU M ME 20 BATTERY MANAGEMENT 21 BATTERY REPEALEMENT oat De te tete 22 ACCESSORI ES ced 22
7. M to restore the factory calibration or press GLP A again to abort factory calibration restore 20 instrument briefly notifies done when restores factory calibration and zero dant returns to measurement mode ke To save battery the instrument shuts down after 10 minutes of non use in measurement mode and after 1 hour of non use in calibration mode If a valid measurement was displayed before auto shut off the value is displayed when the instrument is switched on The blinking ZERO means that a new zero has to be performed One fresh battery lasts for around 750 measurements depending on the light level The remaining battery capacity is evaluated at the instrument startup and after each measurement The instrument displays a battery indicator with three levels as follows 3 lines for 100 capacity 2 lines for 66 96 capacity e 1 line for 33 96 capacity Battery icon blinking if the capacity is under 10 96 If the battery is empty and accurate measurements can t be taken anymore the instrument shows dead batt Z d E A d and turns off To restart the instrument the battery must be replaced bAEE with a fresh one 21 BATTERY REPLACEMENT To replace the instrument s battery follow the steps OFE e Turn the instrument off by pressing ON OFF Tum the instrument upside down and remove the battery cover by turning it cou
8. al element and thus requires particular attention It is important that both the measurement and the calibration zeroing cuvets are optically identical to provide the same measurement conditions Whenever possible use the same cuvet for both It is necessary that the surface of the cuvet is clean and not scratched This to avoid measurement interference due to unwanted reflection and absorption of light It is recommended not to touch the cuvet walls with hands Furthermore in order to maintain the same conditions during the zeroing and the measuring phases it is necessary to close the cuvet to prevent any contamination FUNCTIONAL DESCRIPTION INSTRUMENT DESCRIPTION 1 2 3 4 5 6 7 8 GLP A key CAL CHECK key ZERO CFM key READ key ON OFF key Liquid Cristal Display LCD Cuvet alignment indicator Cuvet holder gt 2 KEYPAD DESCRIPTION ON OFF to turn the meter on and off ZERO CFM to zero the meter prior to measurement to confirm edited values or to confirm factory calibration restore READ gt TIMER this is a multi functional key In measurement mode press to make a measurement or press and hold for three seconds to start a pre programmed countdown In GLP mode press to view the next screen CAL CHECK this is a bi functional key Just press to perform the validation of the meter or press and hold for three seconds to enter calibration mode GLP A thi
9. e CAL CHECK Standard 96770 11 Cuvet B into the cuvet holder and ensure that the notch on the cap is positioned securely into the groove Press READ P TIMER and the instrument status indicator will appear depending on the measurement phase After measurement the instrument will show for three seconds the Cal Check Standard value Note If the display shows STD HIGH the standard value was too high If the display shows STD LOW the standard value was too low Verify that both CAL CHECK Standards 96770 11 Cuvets A and are free from fingerprints or dirt and that they are inserted correctly Then the date of the last calibration e g 01 08 2007 appears on the display or 01 01 2005 if the factory calibration was selected before In both cases the year number is blinking ready for date input DATE INPUT Press to edit the desired year 2000 2099 If the key is kept pressed the year number is automatically increased When the correct year has been set press ZERO CFM or READ P TIMER to confirm Now the display will show the month blinking Press GLP A to edit the desired month 01 12 If the key is kept pressed the month number is automatically increased When the correct month has been set press ZERO CFM or READ gt TIMER to confirm Now the display will show the day blinking Press GLP A to edit the desired day 01 31 If the key is kept press
10. ed the day number is automatically increased Note It is possible to change the editing from day to year and to month by pressing READ gt TIMER Press ZERO CFM to save the calibration date The instrument displays Stor for one second and the calibration is saved The instrument will return automatically to measurement mode by displaying dashes on the LCD more ive A NL ane ES ds 200 1 ZERO N or READ gt m d amp x f X PME e eu 1 E or READ gt GLP In the GLP mode the last user calibration date can be consulted and the factory calibration can be restored LAST CALIBRATION DATE To display the calibration date e Press GLP A 10 enter GLP mode The e no ng calibration month and day will appear on un the main display and the year on the entia secondary display f no calibration was performed the m factory calibration message F CAL will AL appear on the main display and the i instrument returns to measurement mode after three seconds FACTORY CALIBRATION RESET It is possible to restore the factory calibration Press GLP A to enter GLP mode ng ng 2001 Press READ TIMER to enter in the factory calibration restore screen The instrument asks for confirmation before deleting the last calibration ge ye n 5 Press ZERO CF
11. feres at high levels Sulfide 52 interferes at high levels e Phosphates does not interfere up to 50 mg L PO VALIDATION PROCEDURE Use the validation procedure to ensure that the instrument is properly calibrated Warning do not validate or calibrate the instrument with standard solutions other than the CAL CHECK Standards otherwise erroneous results will be obtained For accurate Validation and Calibration results please perform test at room temperature 18 to 25 C 64 5 to 77 0 Turn the meter on by pressing ON OFF St When the beeper sounds and the LCD displays dashes the meter is ready Place the CAL CHECK Standard Cuvet A into the cuvet holder and ensure that the notch on the cap is positioned securely into the groove 7 BA Press ZERO CFM and the instrument status indicator icons will appear depending on the measurement phase After few seconds the display will show 0 0 The meter is now zeroed and ready for validation Remove the cuvet Place the CAL CHECK Standard HI 96770 11 Cuvet B into the cuvet holder and ensure that the notch on the is positioned securely into the groove Press CAL CHECK and the instrument status indicator together with CAL CHECK will appear on the display depending on the measurement phase The display will show the validation standard val
12. gree with each other Precision is usually expressed as standard deviation SD Accuracy is defined as the nearness of a test result to the true value Although good precision suggests good accuracy precise results can be inaccurate The figure explains these definitions In a laboratory using a standard solution of 100 mg L silica and a representative lot of reagent an operator obtained with a single instrument a standard deviation of 5 mg L Precise not accurate Accurate not precise Not precise not accurate PRINCIPLE OF OPERATION Absorption of Light is a typical phenomenon of interaction between electromagnetic radiation and matter When a light beam crosses a substance some of the radiation may be absorbed by atoms molecules or crystal lattices If pure absorption occurs the fraction of light absorbed depends both on the optical path length through the matter and on the physical chemical characteristics of the substance according to the Lambert Beer Law og cd or A e Where log I I Absorbance A I intensity of incident light beam I intensity of light beam after absorption molar extinction coefficient at wavelength A C molar concentration of the substance d optical path through the substance Therefore the concentration c can be calculated from the absorbance of the substance as the other factors are known Photometric chemical analysis is based on the possibilit
13. le readings a row but it is recommended to take a new zero reading for each sample and to use the same cuvet for zeroing and measurement All the reaction times reported in this manual are referred to 20 C 68 F As a general rule of thumb they should be doubled at 10 C 50 F and halved at 30 C 86 F order to maximize accuracy prior to a measurement follow the validation procedure to be sure that the instrument is properly calibrated If necessary calibrate the instrument START UP Prepare the instrument for measurement as follows Unpack the instrument by removing the cuvet holder protection from the instrument cuvet holder Place the battery in the instrument as described in the BATTERY REPLACEMENT chapter see pag 22 Place the instrument on a flat table Do not place the instrument in direct sun light MEASUREMENT PROCEDURE Turn the meter on by pressing ON OFF and follow instruction manual to perform either the MEASUREMENT VALIDATION or CALIBRATION PROCEDURE Turn the meter on by pressing ON OFF The display briefly shows all tags on When the beeper sounds and the LCD displays dashes the meter is ready The blinking ZERO indicates that the instrument needs to be zeroed first Fill the cuvet with 10 mL of unreacted sample up to the mark and replace the cap Place the cuvet into the cuvet holder and ensure that the notch on the cap is positioned securely into the groove
14. ng Diode LED and narrow band interference filter that allows most accurate and repeatable readings All instruments are factory calibrated and the electronic and optical design minimizes the need of frequent calibration With the powerful CAL CHECK validation function you are able to validate good performance of your instrument at any time The validation procedure is extremely user friendly Just use the exclusive HANNA ready made NIST traceable standards to verify the performance of the instrument and recalibrate if necessary The instrument is splash waterproof and the LED and filter units are protected from dust or dirt by a transparent cup This makes the instruments fulfill field applications Display messages aid the user in routine operation The meter has an auto shut off feature that will turn off the instrument after 10 minutes of non use in measurement mode or after 1 hour if left in calibration mode The meter uses an exclusive positive locking system to ensure that the cuvet is in the same position every time it is placed into the measurement cell It is designed to fit a with a larger neck making it easier to add both sample and reagents The cuvet is made from special optical glass to obtain best results The 96770 meter measures the molybdate reactive silica Si0 content in water samples in the 0 to 200 mg L ppm range The method is an adaption of the USEPA METHOD 370 1 for drinking surface and saline waters
15. nterclockwise Extract the battery from its location and replace it with a fresh one Insert back the battery cover and turn it clockwise to close ACCESSORIES REAGENT SET 26770 01 Reagents for 100 SILICA HIGH RANGE tests 26770 03 Reagents for 300 SILICA HIGH RANGE tests OTHER ACCESORIES HI 96770 11 CAL CHECK Standard Cuvets 1 set HI 721310 9V battery 10 pcs HI 731318 Tissue for wiping cuvets 4 pcs HI 731331 Glass cuvets 4 pcs HI 731335 Caps for cuvets HI 93703 50 Cuvets cleaning solution 230 ml 22 WARRANTY 96770 is warranted for two years against defects in workmanship and materials when used for its intended purpose and maintained according to the instructions This warranty is limited to repair or replacement free of charge Damages due to accident misuse tampering or lack of prescribed maintenance are not covered If service is required contact your dealer If under warranty report the model number date of purchase serial number and the nature of the failure If the repair is not covered by the warranty you will be notified of the charges incurred If the instrument is to be returned to Hanna Instruments first obtain a Returned Goods Authorization Number from the Customer Service Department and then send it with shipment costs prepaid When shipping any instrument make sure it is properly packaged for complete protection To validate your warranty fill out and return
16. s is a bi functional key Just press to enter GLP mode In calibration mode press to edit the date and time OPERATING MODES Measurement mode default operation mode enables both validation and measurement Calibration mode may be entered by keeping CAL CHECK pressed for three seconds the CAL tag appears it enables calibration of the instrument GLP mode may be entered by pressing GLP appears it enables consulting of user calibration date or restore factory calibration DISPLAY ELEMENTS DESCRIPTION STD LOW READ COOLING DATE 8888 Instrument status indicator appears during different phases of zero or reading measurement Icons displayed in this area are warning or action icons signaling next operation The battery icon shows the charging level of the battery The hourglass appears when the instrument is performing an internal check up CAL appears when the instrument operates in the calibration mode The month day and date icons appear when a date is displayed The chronometer appears when the reaction timer is running Four digit main display Measuring units Four digit secondary display Oo SI Oe oN ERRORS AND WARNINGS The instrument shows clear messages when erroneous condition appears Messages are also displayed when the obtained values are outside expected range The beeper is playing a beep on errors a on zero reading
17. the enclosed warranty card within 14 days from the date of purchase Recommendations for Users Before using these products make sure that they are entirely suitable for your specific application and for the environment in which they are used Operation of these instruments may cause unacceptable interferences to other electronic equipments this requiring the operator to take all necessary steps to correct interferences Any variation introduced by the user to the supplied equipment may degrade the instruments performance To avoid damages or burns do not put the instrument in microwave oven For yours and the instrument safety do not use or store the instrument in hazardous environments instruments reserves the right to modify the design construction and appearance of its products without advance notice 23 HANNA n ada S 10 10 1900 96
18. ue The reading should be within specifications as reported in the CAL CHECK Standard Certificate If the value is found out of specifications please check that the cuvets are free of fingerprints oil or dirt and repeat validation If results are still found out of specifications then recalibrate the instrument co Co lt B CALIBRATION PROCEDURE Note It is possible to interrupt calibration procedure at any time by pressing CAL CHECK or ON OFF Warning Do not calibrate the instrument with standard solutions other than HANNA CAL CHECK Standards otherwise erroneous results will be obtained For accurate Validation and Calibration results please perform test at room temperature 18 to 25 C 64 5 to 77 0 F e the meter on by pressing ON OFF on When the beeper sounds and the LCD displays dashes the meter is ready 7 Enter the calibration mode by holding CAL CHECK for three seconds The display will show CAL during calibration Place the CAL CHECK Standard Cuvet A into the cuvet holder Ensure that the notch on the cap is positioned securely into the groove Press ZERO CFM and the instrument status up t LN indicator will appear depending on the mu u b 1 ZERO measurement phase o After few seconds the display will show 0 0 The meter is now zeroed and ready for calibration Remove the cuvet Place th
19. y to develop an absorbing compound from a specific chemical reaction between sample and reagents Given that the absorption of a compound strictly depends on the wavelength of the incident light beam a narrow spectral bandwidth should be selected as well as a proper central wavelength to optimize measurements The optical system of HANNA s HI 96770 colorimeter is based on a Light Emitting Diode LED combined with a narrow band interference filter to guarantee both high performance and reliable results FILTER LED LENS CUVET LIGHT MICROPROCESSOR DETECTOR EMITTED LIGHT 1001 HI 96770 block diagram optical layout A microprocessor controlled LED emits radiation which is first optically conditioned and beamed to the sample contained in the cuvet The optical path is fixed by the diameter of the cuvet Then the light is spectrally filtered to a narrow spectral bandwidth to obtain a light beam of intensity I or I The photoelectric cell collects the radiation T that is not absorbed by the sample and converts it into an electric current producing a potential in the mV range The microprocessor uses this potential to convert the incoming value into the desired measuring unit and to display it on the LCD The measurement process is carried out in two phases first the meter is zeroed and then the actual measurement is performed The cuvet has a very important role because it is an optic
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