Hanna Instruments HI 93102 Marine Instruments User Manual
Contents
1. Span calibration To calibrate the span of the meter i fill the cuvet with the primary turbid ity formazine standard of 50 NTU gt Inspect and clean thoroughly the sur face of the vial mE d Shake the standard vigorously for a M few seconds and few minutes I 72 0 for the bubbles to disappear Turn the meter on and press both ALT and CAL momentarily E 2 2 Sf The LCD will show four dashes on the upper ose oc and d 00 on the lower d part of the LCD with 80 the second 0 blinking Using the t and gt keys change the lower mc mm row of the display to show d 21 Insert the previously prepared 50 NTU stan dard into the cuvet holder and make sure that the notch on the cap is positioned securely into the groove Press 22 The display will blink Lt for several sec LI onds indicating that the LED is being adjusted for the turbidimetric channel Afterwards a sequence of numbers between 511 to 512 will appear on the upper part of the LCD indicating different levels of LED light intensity In approximately one minute the adjustment will be made and the calibration data stored in the non volatile memory The display will show four dashes again indicating the end of the span cali bration procedure Press the ALT and CAL keys together again to 2 T 2 leave the diagnostic mode m Ei2. Two point customized calibration To enter the turbidity calibration mode the meter should be in turbidity mode Use the 1 and keys to set the lower level of the LCD to tr Er To enter the calibration mode press and hold the ALT and CAL keys together for at least three seconds The upper display will start flashing CAL for approximately three sec onds rr LU 2 yes To confirm entry into the calibration mode press the CAL key again 2 while CAL is blinking 23 If the CAL key is not pressed the upper dis cc cc play will show in dicating that calibration mode was not entered In which case hold down the ALT and CAL keys together for 3 seconds to restart the procedure After entering the cali bration mode the dis play will show the first a point of the previous calibration The most significant digit will also be blinking Cr Using the f 4 keys set the turbidity of first calibration standard from 0 00 to 50 0 NTU Insert the standard vial into the cuvet holder and ensure that the notch is positioned se curely into the groove Press the key The display will indicate Sample In Progress SIP After the first calibra ie rn tion point is memo JH dab Ol rized the LCD will indi B cate the second point of the previous calibration with the most sig nificant digit blinking Using the f keys
3. 10 CAL key 11 GLP Abs key Turns the meter on and off In ion specific colorimet ric mode it zeros the sample In calibration and diagnostic modes it func tions as ENTER not used in turbidity mode Takes the measuremnt of concentration turbidity of the sample which is shown on the LCD In diagnostic or calibration mode shifts the flashing digit to the right If pressed during calibra tion the calibration proce dure will be aborted and the last calibration data will be reinstated If pressed together with the ALT key for less then 3 seconds the diagnostic mode will be entered If pressed to gether with the ALT key again the meter will quit diagnostic mode f pressed for more then 3 seconds an intermittent CAL prompt will appear on the upper LCD level and the calibration proce dure is entered In ion specific mode it will toggle concentration ab sorbance readings on the upper LCD In turbidity mode date time and the two calibration values of the current mode will be 11 12 t key 13 ALT key 14 key shown If pressed in time date setup mode the meter will quit current mode without making any changes to current time date Scrolls upwards through the parameters to be mea sured In calibration diag nostic mode increments the blinking digit by one If pressed together with ALT while the meter is in logging mode the upper LCD will show the data date time value
4. Fill the vial with the sample The surface of the vial should be clean and scratch free Turn the meter on After the initialization rou tine the LCD will show Use the 1 and keys to set the lower level of the LCD to turbidity tr Se Insert the sample into the cuvet holder and ensure that the notch on the cap is positioned securely into the groove 15 Press READ The meter will intermittently display SIP on the upper level of the LCD mee t ir 23 QU S x After a few seconds the display will show the turbidity value e g 5 34 NTU All Et ino COLORIMETRIC MEASUREMENTS Turn the meter on After the initialization rou tine the LCD will display Use the t and 4 keys to 2 2 choose the desired eter V d F CL Free Chlorine tCL Total Chlorine CY Oyanuric Acid PH pH Id lodine Br Bromine L FE Iron E Measuring Chlorine Cyanuric Acid pH lodine Bromine mA Fill the vial with the sample blank q The surface of the vial should be clean and scratch free Insert the blank sample into the cuvet holder and ensure that the notch on the cap is posi tioned securely into the groove Press ZERO Inr d N 7 The meter will show SIP for a few seconds and then a zero indication om 1 ari lal 1 X
5. SET CURRENT TIME DATE To set or change the current time turn on the meter After initialization routine the LCD will show Press and hold the ALT and GLP keys to gether Display will show the current date in MM DD format e g August 28 is shown as 08 28 A 9 Release the keys The month digits will blink Make the necessary adjustments with the 1 and keys To skip to the day digits press the key KI 0 r re A z x Lt 7 E 5 5 After the adjustments press the key The unit will store the newly set month day data in its EEPROM and will show the current time by a 24 hour clock HH MM format e g 2 28 pm is DATT 0L EI 4 5 r TIME Similarly make the necessary adjustments as described above and press 4 The newly set up month day hour minute data will be stored in memory 14 CURRENT TIME DATE RECALL To recall current TIME DATE press and hold the ALTand READ keys together The current time and an intermittent TIME will be dis played MEE J TE ra TIME Beg PES Release the keys Press and hold the ALT and READ keys again and the meter will show the current date together with an intermittent DATE riz cr Lt a 9 TURBIDITY MEASUREMENTS
6. gether for at least three seconds The upper display will start flashing CAL for approxi mately three seconds To confirm entry into the calibration mode press the CAL key again 2 while CAL is still blinking C If the CAL key is not pressed the upper row of the display will show indicating that the 3 Fa calibration mode was not entered In which case hold down the ALT and CAL keys together for 3 seconds to restart the procedure 27 After entering the cali bration mode the dis play will show the first point of the previous calibration with the most significant digit blinking Using the f and keys choose the concentration of the first calibration standard Insert the known standard into the cuvet holder and make sure that the notch is positioned securely into the groove Press the key The display will indicate sample in progress After the first calibra tion point is memo rized the LCD will indi cate the second point 3 of the previous calibration with the most sig nificant digit blinking Using the f 4 keys choose the known concentration of the second calibration stan dard Insert the standard into the cuvet holder and make sure that the notch is positioned se curely into the groove Press the key The display will blink SIP again After the second calibration point is memo rized the unit will store the calibratio
7. move the two screws on the rear cover of the instrument replace all four 1 5V AA batter ies with new ones while paying attention to their polarity 34 DIAGNOSTIC CODES LOBAT Weak batteries Change all batter ies as soon as possible BA Exhausted batteries Change all batteries immediately LO Low level of light is received during the zeroing procedure Check for scratches on the cuvet and ensure that sample is not ex cessively turbid Repeat the read ings If the problem persists recalibrate the meter using deion ized water in the diagnostic mode 31 see Calibration CAP Light intensity is high during last measurement Make sure the cuvet is capped and placed properly in the holder and that ambient light does not reach the photodetector Repeat the measurement If the problem persists contact your dealer or the nearest Hanna Office Er 1 Hardware error Repeat the mea surement If the error message ap pears again contact your dealer or the nearest Hanna Office rnG Out of range Check the measuring procedure and verify the concentration of the sample to ensure that is not too high 35 ACCESSORIES 731327 93102 0 93102 20 93701 01 93701 03 93703 50 93710 01 93710 03 93711 01 93711 03 93716 01 93716 03 93718 01 HI 93718 03 93722 01 93722 03 Maintenan
8. in the memory Alternative functions Scrolls downwards through the parameters to be mea sured In calibration diag nostic mode decreases the blinking digit by one If pressed together with ALT while the meter is in logging mode the upper LCD will show the current lot number 12 SPECIFICATIONS 93102 Range Turbidity Bromine Free Cl Total Cl CYS lodine LR Iron pH 0 00 to 50 0 NTU 0 00 to 8 00 mg L 0 00 to 2 50 mg L 0 00 to 3 50 mg L 0 to 80 mg L 0 0 to 12 5 mg L 0 00 to 1 00 mg L 5 9 to 8 5 Resolution Turbidity Bromine Free Cl Total Cl CYS lodine LR Iron pH 0 01 and 0 1 NTU 0 01 mg L 0 01 mg L 0 01 mg L 1 mg L 0 1 mg L 0 01 mg L 0 1 Accuracy Turbidity Bromine Free Cl Total Cl CYS lodine LR Iron pH 0 5 NTU or 5 whichever greater 0 08 mg L 3 0 03 mg L 3 0 03 mg L 3 1 mg L 15 0 1 mg L 5 20 02 mg L 3 0 1 pH Light Source Pure Green LED Light Source Life Life of the instrument Light Detector Two Silicon Photocells Power Source 4 x 1 5V AA alkaline batteries Battery Life 60 hours or 1000 measurements Auto off Selectable after 10 20 30 40 50 or 60 min of non use Environment 0 to 50 C 32 to 122 F RH max 95 non condensing Dimensions 220 x 82 x 66 mm 8 7 3 2 x 2 6 Weight 510 g 1 1 Ib 1 NTU 1 FT 13 OPERATIONAL GUIDE
9. Fax 401 765 7575 For e mail contacts and complete list of Sales and Technical offices please see www hannainst com TH20LONVIA 90 20
10. complete with Glass cuvet with cap Batteries 4 x 1 5V AA Instruction manual The HI 731327 complete maintenance kit is also available including 2 glass cuvets Primary calibration standards 93102 0 AMCO AEPA 1 0 cali bration solution 30 mL HI 93102 20 AMCO AEPA 1 20 NTU cali bration solution 30 mL HI 93703 50 cleaning solution 230 mL Tissue for wiping cuvets Rugged carrying case Note Save all packing material until you are sure that the instrument functions cor rectly Any defective item must be re turned in its original packaging with the supplied accessories 1 NTU Nephelometric Turbidity Unit 1 FTU For mazine Turbidity Unit 3 GENERAL DESCRIPTION The Hanna HI 93102 is a portable micropro cessor driven multiparameter turbidity and ion specific meter It measures Free amp Total Chlorine Cyanuric Acid pH lodine Bromine Low Range Iron and Turbidity In the colorimetric mode the user can select either factory preprogrammed calibration set tings or calibrate the meter using customized calibration values based on the concentration or relative absorbance of the sample Calibra tion data is also stored in a non volatile EEPROM In the turbidity mode periodic recalibration of the meter with primary standards according to regulatory requirements or personal experi ence is suggested Turbidity ranges are 0 00 9 99 NTU and 10 0 50 0 NTU HI 93102 complies
11. set the turbidity of the second calibration standard from 0 00 to 50 0 NTU Insert the standard into the cuvet holder and make sure that the notch is positioned securely into the groove Press the key The display will indicate SIP again After the second calibration point is memo rized the unit will store the calibration data together with time and date in the EEPROM while intermittently indicating CAL and Stor for several seconds 1 2D th UL LO Er Subsequently the up per display will show indicating that the meter is calibrated and ready to measure turbidity of an unknown sample By pressing CAL during calibration user can quit the calibration mode 2 at any time without changing the lt previously stored calibration data COLORIMETRIC CALIBRATION Zero calibration To calibrate the span of the meter fill the cuvet with a clean deionized water sample Inspect and thoroughly clean the surface of the vial Turn the meter on and press both ALT and CAL momentarily 4 2 2 The display will show four dashes and d 00 EN The second 0 will blink ND to allow the user to zo vc make a selection 25 Using f 4 keys set the lower part to d 31 x Eric Insert the previously prepared deionized wa ter standard into the cuvet holder and make sure that the notch on the cap is positioned securely int
12. the value is stored in the next available lot number REVIEWING THE LOGGED BUFFER To review the memo 2 rized values press to 0 3 01 gether ALT and t The meter will scroll all the data in the buffer showing the lot number value date and time e g The first recorded reading in the buffer is lot 0 0 35 mg L of lron memorized on 2314 August at 3 34 The second logged data relates to lot 1 1 35 mg L of the customized param eter logged on 23 August at 3 55 pm First lot Second lot riri Lo LOL LL LOG FG LOG Fn GE AU Loc FE 106 5 Fn ne nei bal nl DATE DATE LOG E 106 5 r TARTE ira SU LUI TIME TIME LOG ES LOG rn CLEARING THE MEMORY After all the buffer memory is taken up the LCD will blink Full rir SS E A LoG L FE 32 To clear the buffer press a 2 the ALT and CAL keys lt Select mode 40 Press the key The dis play will show the Cln message indicating that memory is being cleaned The lot number will be reset to 00 automatically REVIEWING THE CURRENT LOT NUMBER To check the current vacant lot number i while in log mode press ALT and to gether USER SELECTABLE AUTO OFF With HI 93102 the users can customize the shutdown time to save power
13. with G L P Standards Good Laboratory Practice that is When switched on the LCD displays all segments display check Battery status is monitored during every measurement cycle warning the user if the batteries become weak In addition 93102 will turn itself off before low voltage causes erroneous read ings It utilizes a real time clock and recalls calibration data such as date time and calibration values To facilitate field tests the meter provides a logging mode In this mode the user can store up to twenty five time tagged measure ments in RAM and scroll the memory at any time There are eight keys for the different operationals modes The large Liquid Crystal Display is dual level the upper level has four digits and can display the measured param eter in hundredths The lower level has three characters and indicates current mode e g F CL for free chlorine or TR for turbidity Different LCD segments indicate low battery logging mode date time etc A pure green LED has been utilized as a light source for both turbidimetric and colorimetric measurements A silicon photocell is used to receive transmitted light from colorimetric chan nel while another photocell receives scattered light from the turbidimetric nephelometric channel In order to measure colorimetric parameters all the operator has to do is zero the blank sample and then add 1 packet of reagent for Bromine Chlorine Cyanur
14. ANGE 7 TODINE h a 1 Primary LCD The four digit LCD shows all segments for several seconds when the meter is switched on It then dis plays four dashes to indi cate ready to measure It is also the area where the date time and value of last calibration are shown In Read and Zero mode SIP is shown to indicate Sample 9 JI Secondary LCD DATE TIME LOBAT LOG In Progress The upper level also indicates the concentration or turbidity of the sample as well as different diagnostic modes such as BA for low bat tery The three digit LCD shows the current mode of mea surement that is F CL CL CY PH Id L FE t and di agnostic or calibration modes such as d11 2 Fn 501 Indicates that the upper level of LCD is showing the current date the date of last calibration or the date of logged measure ment in memory Indicates that the upper level of LCD is showing the current time the time of last calibration or the time of logged measure ment in memory Blinking segment warns user of low battery volt age If intermittent it indicates that the user is in the scroll mode viewing the logged measurements If fixed it indicates that the meter is in the log mode and every reading taken will be stored in memory 10 7 ON OFF key 8 ZERO a key 9 READ gt key
15. Instruction Manual HI 93102 Multiparameter Turbidity amp lon Specific Meter www hannainst com Dear Customer Thank you for choosing a Hanna Product Please read this instruction manual carefully before using the instrument This manual will provide you with the necessary information for correct use of the instrument as well as a precise idea of its versatility If you need more technical information do not hesi tate to e mail us at tech hannainst com This instrument is in compliance with C direc tives TABLE OF CONTENTS General Description 4 Principle of Operation 6 Functional Description 9 Specifications 13 Operational Guide 14 22 Diagnostic Mode 30 Logging with C 102 31 User selectable Auto off 33 Battery Replacement 34 Diagnostic Codes 35 Accessories esses 36 0 38 CE Declaration of Conformity 39 2 PRELIMINARY EXAMINATION Remove the instrument from the packing ma terial and examine it to make sure that no damage has occurred during shipping If there is any damage notify your Dealer HI 93102 is supplied
16. To change the shutdown time enter the diagnos 2 tic mode by momentarily pressing the ALT and CAL keys getha Select mode 10 and press the key repeat edly to set the desired shutdown time from 10 to 60 minutes with 10 minute increments or disable the shutdown mode by choosing the OFF selection ed al r rrr Li LO After the selection is com pleted exit the diagnos 4 2 tic mode by pressing ALT CAL together 33 The meter will store new settings in its non volatile memory and the display will flash diAG and Stor alternatively for several sec onds pe f in 20 BATTERY REPLACEMENT A LOBAT indication appears on the lower right hand side of the display when the bat teries are weak and require replacement At this point the instrument is still able to per form approximately 50 additional measure ments A BA indication will LOBAT ARRE appear on the display E when the batteries are too weak to perform accurate measurements This message ap pears for a few seconds and then the meter will completely switch itself off At this point the batteries must be replaced Batteries should only s be replaced in a safe _ area using 1 5V AA al 6e kaline type screw In order to replace the batteries simply
17. X ra Fi AS CE For pH add 0 2mLof For Chlorine lodine HI 93710 01 and Bromine add the p content of their re spective packet pa HI 93710 01 For Cianuric Acid only add the con tent of one packet of HI 93722 re agent to a beaker filled up to the il 25mL mark with unreacted sample up to the 25 mL mark Stir gently to mix and then fill the cuvet up to 1 5 347 below the rim with 10 mL of the reacted sample Replace the cap shake the cuvet and allow a few seconds for color to develop For best results wait 212 mins for Total Chlorine Bro mine lodine and 45 secs for Cyanuric Acid Insert the reacted sample into the cuvet holder and ensure that the notch on the cap is posi tioned securely into the groove Press READ The meter will show SIP for a few seconds and then the concentration Exi 03 1 zU t Measuring Iron Fill one graduated mixing cylin der up to the 25 mL mark with 25 mL deionized water L Add the content of one packet of HI 93746 TPTZ reagent close the cylinder and agitate for 30 seconds This is the blank MS o 6 Fill a cuvet with 10 mL of the blank up to 1 5 cm 34 below the rim and replace the cap Insert the blank into the cuvet holder and make sure that the notch on the cap is positioned securely into the groove Press ZERO The meter will
18. alf of Hanna Instruments S r l Recommendations for Users Before using this product make sure that it is entirely suitable for the environment in which it is used Operation of this instrument in residential areas could cause unacceptable interfer ence to radio and TV equipment requiring the operator to take all necessary steps to correct the interference Any variation introduced by the user to the supplied equipment may degrade the instrument s EMC performance To avoid electrical shocks do not use this instrument when voltage at the measure ment surface exceeds 24 Vac or 60 Vdc To avoid damage or burns do not perform any measurement in microwave ovens 39 SALES AND TECHNICAL SERVICE CONTACTS Australia Tel 03 9769 0666 Fax 03 9769 0699 China Tel 10 88570068 Fax 10 88570060 Egypt Tel amp Fax 02 2758 683 Germany Tel 07851 9129 0 Fax 07851 9129 99 Greece Tel 210 823 5192 Fax 210 884 0210 Indonesia Tel 21 4584 2941 Fax 21 4584 2942 Japan Tel 03 3258 9565 Fax 03 3258 9567 Korea Tel 02 2278 5147 Fax 02 2264 1729 Malaysia Tel 603 5638 9940 Fax 603 5638 9829 Singapore Tel 6296 7118 Fax 6291 6906 South Africa Tel 011 615 6076 Fax 011 615 8582 Taiwan Tel 886 2 2739 3014 Fax 886 2 2739 2983 Thailand Tel 66 2619 0708 Fax 66 2619 0061 United Kingdom Tel 01525 850 855 Fax 01525 853 668 USA Tel 401 765 7500
19. ce kit rugged carrying case including 93102 0 and HI93102 20 calibration solutions HI 93703 50 cuvet cleaning solution one tissue for wiping cuvets and two cuvets AMCO AEPA 1 9 0 NTU calibration solution 30 mL AMCO AEPA 1 20 NTU calibration solution 30 mL Reagents for 100 Free Chlo rine tests Reagents for 300 Free Chlo rine tests Cuvet cleaning solution 230 mL bottle Reagents for 100 pH tests Reagents for 300 pH tests Reagents for 100 Total Chlo rine tests Reagents for 300 Total Chlo rine tests Reagents for 100 Bromine tests Reagents for 300 Bromine tests Reagents for 100 lodine tests Reagents for 300 lodine tests Reagents for 100 Cyanuric Acid tests Reagents for 300 Cyanuric Acid tests 36 HI 93746 01 HI 93746 03 HI 731318 1 NTU 1 FTU Reagents for 100 Low Range Iron tests Reagents for 300 Low Range Iron tests Tissue for wiping cuvets 4 pcs 37 WARRANTY Hanna Instruments meters are guaranteed for two years against defects in workman ship and materials when used for their in tended purpose and maintained according to instructions This warranty is limited to repair or replace ment free of charge Damages due to acci dents misuse tampering or lack of prescribed maintenance are not covered If service is required contact the dealer from whom the instrument was purchased If under warranty report the model number date of purchase serial number and the natu
20. ic Acid lodine and Low Range Iron or 0 2 mL of Phenol Red for pH After placing the cuvet back in the meter and pressing READ the measurements are shown directly on the LCD The instrument operates with four AA batter ies and may be operator programmed to turn itself off automatically after 10 20 30 40 50 or 60 minutes of inactivity HI 93102 and all accessories such as sample vials reagent pillows primary standards can be easily stored in the optional carrying case PRINCIPLE OF OPERATION Turbidity Mode HI 93102 has been designed to perform mea surements according to the USEPA s 180 1 method and the Standard Method 2130B The instrument functions by passing a beam of light through a vial containing the sample being measured The light source is a Pure Green LED to ensure that any interference caused by a colored samples is minimized A sensor positioned at 90 with respect to the direction of light detects the amount of light scattered by the undissolved particles present in the sample The microprocessor converts such readings into NTU values LIGHT DETECTOR PURE GREEN LED f S SCATTERED 4 H LIGHT 7 v EMITTED LIGHT T i m 65 NA CUVET NTU units are equal to FTU units However there are other known measurement units for turbidity namely the Jackson Turbidity Unit JTU based on the old method of Jackson s candle and Silica Unit mg L of SiO The con
21. n data time and date in the EEPROM while intermit tently indicating CAL and Stor for several seconds 28 Subsequently the up per display will show indicating that the meter is calibrated and ready to measure the concentration of an unknown sample By pressing the CAL key during calibration user can leave the cali 2 bration mode at any time without changing the previously stored calibration data 29 DIAGNOSTIC MODE HI 93102 facilitates operations by providing a diagnostic mode In this mode user can set or verify different parameters necessary to ensure optimum performance of the meter To enter the diagnostic mode turn the meter on and momentarily press ALT and CAL to gether The display will show four dashes to gether with d 00 22 Using the t and keys select the re quired diagnostic mode and press the key The meter will execute one of the following user diagnostic functions 10 Customizes automatic shutdown 11 Selects User or Factory functions e Turns logging mode on or off 1 1 Calibrates span turbidimetric mode Calibrates span in colorimetric mode Clears the logged memory The following diagnostic modes are reserved for authorized service technicians 00 Shows the Blank level in colorimetric mode 0 1 Shows the Sample level in colorimetric mode 82 Shows the Dark level in colorimetric mode 85 Show
22. ntensity 7 A substance absorbs a color complimentary to the color it emits For example a substance appears yellow because it absorbs blue light As a result the Hanna meters use LED s with specific wavelengths to measure samples The optical distance d is measured by the internal diameter of the cuvet containing the sample The photoelectric cell collects the radiation I that is not absorbed by the sample and converts it into an electric current The microprocessor converts the value into the desired measuring unit and displays it on the LCD The measurement process is done in two phases setting the meter to zero and actual measurement The cuvet is an optical element and hence has an important role in the measurement process Both the measurement and the calibration cuvets must be optically identical to provide the same measurement conditions It is also important that the surface of the cuvet is clean and free from scratches or dents in order to avoid measurement interference due to unwanted reflection and absorption of light It is recommended that wherever possible the cuvet walls are not touched by the operator Furthermore in order to maintain the same conditions during the zeroing and the measuring phases it is necessary to close the cuvets to prevent any contamination FUNCTIONAL DESCRIPTION EN Yi a 5 ZO gt g tU 0 IRON LOW R
23. o the groove Press the key The display will blink Lc for several sec onds indicating that adjustment of the LED for the colorimetric measurements is in progress After this a sequence of numbers between 511 to 512 will appear on the upper LCD indicating the different levels of LED light intensity In approximately one minute the adjustment will be made and the calibration data will be stored in the non volatile memory Display will show four dashes again indicating 5 the end of the zero cali bration procedure Press the ALT and CAL keys again to leave the T a diagnostic mode 6 Two point customized calibration To enter the colorimetric calibration mode press momentarily both the ALT and CAL keys The LCD will show four dashes and 000 7 4 n V 1 26 set the lower part of the LCD to d 11 and then press the key The key is used as a toggle function in this mode and allows the user to select be tween USER USR or FACTORY FCT pro grammed functions Using the t and keys n um Select the USER mode and press ALT and CAL keys together to leave the diagnostic mode The display of the meter will indicate four dashes together with a number from 0 to 7 on the lower part of the LCD E rn Press and hold the ALT and CAL keys to
24. re of the failure First obtain a Returned Goods Autho rization number from the Customer Service department and then return the instrument indicating the Authorization with shipment costs prepaid If the repair is not covered by the warranty you will be notified of the charges When shipping any instrument make sure it is properly packaged for complete protection All rights are reserved Reproduction in whole or in part is prohibited without the written consent of the copyright owner Hanna Instruments reserves the right to modify the design construction and appear ance of its products without advance notice CE DECLARATION OF CONFORMITY la instruments DECLARATION OF CONFORMITY We Hanna Instruments Italia Srl via E Fermi 10 35030 Sarmeola di Rubano PD ITALY herewith certify that the turbidity and ion specific meter C 102 has been tested and found to be in compliance with EMC Directive 89 336 EEC and Low Voltage Directive 73 23 EEC according to the following applicable normatives EN 50082 1 Electromagnetic Compatibility Generic Immunity Standard 801 2 Electrostatic Discharge TEC 801 3 RF Radiated EN 50081 1 Electromagnetic Compatibility Generic Emission Standard EN 55022 Radiated Class B EN61010 1 Safety requirements for electrical equipment for measurement control and laboratory use Me Date of Issue 27 10 1998 6 2 P C sa Technical Director On beh
25. s the Ground voltage G6 Shows 5V on board level 0 1 Shows battery voltage level 88 Shows 1 23V reference voltage level 03 Shows 5V on board level 33 Shows software version number 30 To quit diagnostic mode press the ALT and CAL 2 2 keys together again 4 LOGGING WITH 102 HI 93102 allows user log 25 time day tagged measurements User can easily turn the log ging mode on and off review the logged memory review the current lot number and clean the buffer memory C 102 also re minds user if its memory is full TURNING THE LOG MODE ON OR OFF Enter the diagnostic 2 mode by pressing ALT T and CAL together S 4 Select mode 12 and press the 2 key a The display will show the current vacant lot together with LOG if the log mode is on Otherwise it will show if the log mode is off YU Los By pressing the key the meter toggles between the Log on and off positions If the log on mode is selected every time a mea surement is taken READ pressed the rel evant values will be stored in the current vacant lot number To quit diagnostic mode press the ALT and CAL 2 2 keys together again l The LCD will then show diAG and Stor for a few seconds If the log on mode was selected LOG will appear on the bottom left hand side 31 of the display to remind the user that every time a measurement is taken
26. show SIP for a few seconds and then a zero indication 1 1 1 at E E rr inder up to the 25 mL mark Fill one graduated mixing cyl with the sample 25 mL 18 Add the content of one packet of HI 93746 TPTZ reagent close the cylinder and agitate for 30 seconds B 6 15cm Fill a cuvet with 10 mL of the reacted sample up to 1 5 cm 34 below the rim and re place the cap This is the sample Insert the reacted sample into the cuvet holder and make sure that the notch on the cap is positioned securely into the groove Wait 30 and then press READ 1 1 The meter will show SIP for about few seconds and then the concentration 1 I 0 wo 5 EG Note To review the relative absorbance of the sample wait until the concentra tion measurement is completed and then press GLP Abs The display will show the absorbance in milliunits to 19 gether with the Ab indicator e g 533 Ab 533 milliabs units AU AU AU D na Note Absorbance readings may have a nega tive sign if the transmittance of the ZERO sample is less then that of the reacted sample Note For better accuracy wash glassware with HCI 6N Measurements in user customized mode Note The meter must be calibrated for this purpose Follow the two point c
27. ustom ized calibration on page 26 before proceeding Turn the meter on and by momentarily press ing both ALT and CAL 2 9 j 9 d 4 The LCD will show four dashes on the upper m and d 00 on the lower part of the LCD with so SEE the second 0 flashing Using the f and gt keys change the lower row of the display to 7 show 11 Press the key This key is also used as toggle between USER USR and FACTORY FCT programmed functions Select the USER mode if necessary by pressing the key more than once a Lt LO d i 20 Press ALT and CAL until four dashes are displayed on the upper display and fn are shown in the lower part of the LCD Using the t and keys select the number from 0 to 7 where the appropriate calibration data have been stored Add the appropriate reagent into the blank sample cuvet Shake and allow a few sec onds for color to develop 4 A 4 z H REAGENT Insert the reacted sample into the cuvet holder and make sure that the notch on the cap is positioned securely into the groove Press READ The meter will first show SIP for a few seconds and afterwards the sample concen tration zl 5 3 21 CALIBRATION TURBIDITY CALIBRATION The meter should be properly calibrated with a standard prepared as described in USEPA method 180 1
28. version table between these measurement units is shown below NTUFTU SiO mg L JTU 19 2 5 NTU FTU 1 0 13 SiO mg L 7 5 1 1NTU 1FTU Colorimetric Mode The color of every object we see is deter mined by a process of absorption and emis sion of the electromagnetic radiation light of its molecules Colorimetric analysis is based on the principle that specific compounds react with others to form a color the intensity of which is proportional to the concentration of the substance being measured LED LIGHT DETECTOR ATN EMITTED LIGHT yi ES EM S nn TAS CUVET MICROPROCESSOR Block diagram of an ion specific measurement When a substance is exposed to a beam of light intensity 1 a portion of the radiation is absorbed by the substance s molecules and a radiation of intensity 1 lower than 1 is emitted The quantity of radiation absorbed is given by the Lambert Beer Law log 1 I amp cd Where log 1 1 Absorbance molar extinction coefficient of the substance at wavelength X c molar concentration of the substance d optical distance light travels through the sample Since other factors are known the concen tration c can be calculated from the color intensity of the substance determined by the emitted radiation 1 An LED Light Emitting Diode emits radiation at a relatively narrow spectrum supplying the system with the i
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