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horiba OPSA-150, Instruction Manual

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horiba OPSA-150 Instruction Manual Download Page 94

7 Maintenance

82

7

Maintenance

Calibration and periodical maintenance are required in order to maintain the normal operation
and performance of the unit.
Regarding calibration, refer to "4 Calibration" (page 15).

7.1

Contact for Maintenance

7.2

Maintenance Item

The maintenance cycle in the table is the typical interval when using under standard
conditions, and does not guarantee the measurement values. They may vary according to the
circumstances or usage conditions set the proper cycle after using for a certain period of time.

Manufacturer:

HORIBA Advanced Techno Co., Ltd.
31, Miyanonishi-cho, Kisshoin Minami-ku, Kyoto 601-8306, Japan

Maintenance item

Maintenance cycle

Time to clean/replace

Subject

Description

Weekly Monthly

Every 

half 

year

Yearly

Every 

3 years

Accord

ingly

Analyzer 
unit

Cleaning of measuring cell

When dirt can be seen.

Inspection and replacement 
of wiper blade rubber

When dirt can be seen.

Replacement of desiccant 
agent and seal washers: 
upper case

Periodical replacement 
(every half year)

Replacement of desiccant 
agent in measuring cell

Periodical replacement 
(every half year)

Replacement of inner parts

When the measurement  
value is abnormal

Replacement of UV lamp

Periodical replacement 
(yearly)
When the measurement 
value is abnormal
When the UV lamp 
does not illuminate

Replacement of motor

Periodical replacement 
(yearly)

Replacement of seal 
washers: cell stay

Periodical replacement 
(yearly)

Replacement of V-rings

Periodical replacement 
(yearly)

Replacement of gear

Periodical replacement 
(yearly)

Replacement of cell

When dirt can be seen
When it is damaged

Replacement of case 
packing

Periodical replacement 
(yearly)

Control 
unit

Replacement of battery for 
clock

Periodical replacement 
(every 3 years)

Replacement of substrate 
and electric parts

When malfunctioning

Summary of Contents for OPSA-150

Page 1: ...Organic Pollutant Monitor OPSA 150 Instruction Manual CODE GZ0000551319...

Page 2: ...l be extended Any malfunction or damage attributable to improper operation Any malfunction attributable to repair or modification by any person not authorized by HORIBA Advanced Techno Co Ltd Any malf...

Page 3: ...pean Union The symbol might be put with one of the chemical symbols below In this case it satisfies the requirements of the Directive 2006 66 EC for the object chemical This product should not be disp...

Page 4: ...igned to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and...

Page 5: ...esult in death or serious injury This is to be limited to the most extreme situations This indicates a potentially hazardous situation which if not avoided could result in death or serious injury This...

Page 6: ...f the unit to avoid the danger of electric shock Do not attempt to disassemble or modify the unit Doing so could lead to bodily harm and or injury or may cause damage to the unit or the sample Maintai...

Page 7: ...the unit in a location close to equipment using strong electric power such as an electric furnace or near a radio or sound wave source Do not give a shock or large vibrations to the unit To move the...

Page 8: ...ndicates reference information Original language This is the English translation of an original Japanese document Documents related to this product The following documents are related to this product...

Page 9: ...Overflow Tank to Control Unit 11 3 Operation 12 3 1 Preparation for Operation 12 3 2 Starting Operation 13 3 3 Shutting Down 14 3 3 1 For Shut Down within 7 Days 14 3 3 2 For Shut Down over 7 Days 14...

Page 10: ...Component 48 5 5 3 Unit Setting for UV VIS and UV VIS 49 5 5 4 Setting of Turbidity Correction Factor 50 5 5 5 Setting of COD Conversion Factor and TURB Meas Correction Factor 51 5 5 6 Setting of MAX...

Page 11: ...84 7 3 1 Cleaning of Measuring Cell 84 7 3 2 Inspection and Replacement of Wiper Blade Rubber 86 7 3 3 Replacement of Desiccant Agent and Seal Washers Upper Case 88 7 3 4 Replacement of Desiccant Agen...

Page 12: ...9 3 Measurement Principle 105 9 4 TURB turbidity Measurement 106 9 5 How to Calculate the COD Conversion Factor 106...

Page 13: ...termine compliance with water quality gross volume regulations improved correlation between ultraviolet absorbance and COD values obtained by the designated measuring method is required In activated s...

Page 14: ...view Note The pole stand and the base illustrated are typical examples Appearance and size may vary depending on the specifications Door Left side view Front view Display Roof optional No Sample Float...

Page 15: ...view 3 Inside of the control unit CF card insertion slot Display Touch panel Maintenance switch Fuse Power alarm LED Power switch AC power terminals Signal terminals Connectors for the analyzer unit C...

Page 16: ...r alarm the display turns to the measurement display Example of display Displaying measurement readings The display shows measurement readings WARM UP When the power is turned ON WARM UP is displayed...

Page 17: ...and other information No Description Display example Title of display MAINTENANCE SETTING etc Selection keys SETTING MEAS SETTING etc Switching keys CLOSE etc No Description Display example Title of d...

Page 18: ...supply are provided Install the unit in a place that is well ventilated free from dirt or dust and where no corrosive gases will be generated Install the unit in a place that is free from strong vibr...

Page 19: ...working instruction separately supplied Secure the base with the reference bolts Note The pole stand and the base illustrated are typical examples Appearance and size may vary depending on specificati...

Page 20: ...e Bypass outlet Rc 1 2 female Overflow outlet 1 Elbow fitting 13 dia nominal Overflow outlet 2 Elbow fitting 20 dia nominal Drain outlet Rc 1 2 female Discharge Tube coupling 50 dia nominal Air releas...

Page 21: ...ch piping diameter should be larger than that indicated above Ensure that the waste water piping overflow piping 1 and 2 and drain piping have sufficient gradient to allow drainage from the outlet of...

Page 22: ...nect a surge absorber or noise killer in parallel to the power line in order to prevent electric power noise 2 5 3 Connecting Signal Lines Connect the signal lines according to the signal table Use do...

Page 23: ...erminal of shield line with a screw M3 to the screw hole under the connectors CN1 and CN2 2 5 5 Connecting Float Switch Cable of Overflow Tank to Control Unit Run the float switch cables of the overfl...

Page 24: ...m the underwater pump or the header 6 Open valve V 1 gradually until sample water runs out of the overflow outlet 1 of overflow tank If the sample water does not run out of the overflow outlet 1 even...

Page 25: ...about 60 minutes 2 Set the clock Reference 5 4 5 Time Adjustment page 43 3 Change the settings as necessary Reference 5 Functions page 35 4 Calibrate the unit Note Calibration should be performed aft...

Page 26: ...POWER switch 4 Clean the overflow tank and measuring tank Reference 5 6 Maintenance Action page 56 5 Clean the cell of control unit Reference 2 4 Piping Configuration page 8 3 4 Restarting Operation...

Page 27: ...n span calibration of UV VIS using the exclusive common span calibration solution Put the span calibration solution in the calibration tank After setting the calibration value of UV VIS and the measur...

Page 28: ...used the measurement error also becomes larger Whenever diluting the span calibration solution make sure to dilute by adding distilled water When disposing of the common span calibration solution fol...

Page 29: ...he calibration menu is displayed 2 Press the measurement item to be calibrated on the CALIBRATION screen The CALIBRATION screen for each measurement item is displayed 3 Perform calibration by followin...

Page 30: ...o buy H II calibration solution ampoules as the number of ampoules used is fewer Common zero calibration solution Preparation Make sure to use the distilled water How to prepare common span calibratio...

Page 31: ...tration value described on the ampoule Use 4 ampoules of H calibration solution or 2 ampoules of H II calibration solution when preparing the span calibration solution of 2 6 Abs to 5 0 Abs 260 m 1 to...

Page 32: ...ter into the 1 L beaker and add the measured acid potassium phthalate to dissolve thoroughly Tip The acid potassium phthalate dissolves easily when setting the temperature of the zero solution from 40...

Page 33: ...ving the analyzer unit make sure not to lose the wing nuts As the UV lamp is illuminated work with the attached light shielding glasses The UV lamp should not be viewed directly as your eyes may be da...

Page 34: ...base of the cell rotary shaft V ring seal part 6 After cleaning the cell unit dip the cell in the calibration tank 7 Press the button for ZERO VALUE for UV on the UV VIS CAL screen The screen changes...

Page 35: ...al screen is displayed 12 Press YES to start the zero calibration The Calibrating screen is displayed After calibration the Calibration finished screen is displayed 13 Press YES The zero calibration v...

Page 36: ...1 How to Prepare Calibration Solution page 18 and clean the tank inside 3 After cleaning pour the span solution up to the scale CAL UV VIS MEAS screen Refer to 4 3 Calibration Screen Display page 17...

Page 37: ...cell rotary shaft V ring seal part When removing the analyzer unit make sure not to lose the wing nuts As the UV lamp is illuminated work with the attached light shielding glasses The UV lamp should...

Page 38: ...he button for SPAN VALUE for VIS on the UV VIS CAL screen 10 Enter the concentration value of compounded span calibration solution with the numeric keypad and press SET Input range 0 000 Abs to 5 000...

Page 39: ...prepared by following 4 4 1 How to Prepare Calibration Solution page 18 and clean the tank inside 3 After cleaning pour the individual span solution to the scale CAL UV VIS MEAS screen Refer to 4 3 Ca...

Page 40: ...cell rotary shaft V ring seal part When removing the analyzer unit make sure not to lose the wing nuts As the UV lamp is illuminated work with the attached light shielding glasses The UV lamp should n...

Page 41: ...nd press SET Input range 0 000 Abs to 5 000 Abs or 0 0 m 1 to 500 0 m 1 The screen returns to the UV VIS CAL screen 11 After waiting for 3 minutes and confirming that the measurement value has stabili...

Page 42: ...of water and 0 2 g of sodium diphosphate decahydrate designated by JIS K8785 and stir hard using the magnetic stirrer for approximately 3 minutes Pour the solution into the 1000 mL measuring cylinder...

Page 43: ...the above mentioned table immediately take the 200 mL and pour into the 2000 mL measuring flask and add tap water up to the gauge line Note Make sure to use the pure water to dilute the TURB span cal...

Page 44: ...epared by following 4 5 1 How to Prepare the Calibration Solution page 30 and clean the tank inside 3 After cleaning pour the TURB span solution to the scale CAL UV VIS MEAS screen Refer to 4 3 Calibr...

Page 45: ...he wing nuts As the UV lamp is illuminated work with the attached light shielding glasses The UV lamp should not be viewed directly as your eyes may be damaged 6 After cleaning the cell unit with the...

Page 46: ...ue Tip CLEAR Clears all input numeric value BACK Clears the rightmost number 9 After waiting for 3 minutes and confirming that the measurement value is stabilized press SPAN The Start span cal screen...

Page 47: ...eds Abs CONC Function Description Reference Maintenance Setting Sets signal reception and allocation from exterior and input and output setting during operation 5 4 Maintenance Setting page 37 Measure...

Page 48: ...MAINTENANCE screen The MAINTENANCE screen for each item appears MAINTENANCE screen operation buttons Displayed screen SETTING SETTING screen MEAS SETTING MEAS SETTING screen ACTION ACTION screen CHECK...

Page 49: ...als for analog output and contact output are allocated here 1 Press SIGNAL ALLOCATION on SETTING 1 2 screen The SIGNAL ALLOCATION screen appears MAINT MEAS SIGNAL INPUT SETTING SETTING Refer to 5 3 Ma...

Page 50: ...ts to output either one of the following items to the output terminal of contact output from 01 to 04 Setting range TOTAL ALARM MAX COD MAX TURB MIN COD MIN TURB LAMP ERR NO SAMPLE MOTOR ERR ANALYZE E...

Page 51: ...the system to receive the signal input is complete 4 Press the button for ADJUST TIME ADJUST TIME screen appears 5 Input the correct clock time when the external input is received The screen returns...

Page 52: ...MEAS OUTPUT SETTING SETTING Refer to 5 3 Maintenance Screen Display page 36 OUTPUT SETTING screen MAINTENANCE SETTING 1 2 screen screen screen Setting item Description Initial setting ANALOG OUTPUT LE...

Page 53: ...s the preset value The value corresponds to the following calculating formula When the analog output level is 4 mA to 20 mA Full scale of measurement value preset value 4 16 When the analog output lev...

Page 54: ...deactivate the minus display The screen returns back to the OUTPUT CONDITION SETTING screen The output condition setting is complete MAINT MEAS OUTPUT CONDITION SETTING SETTING Refer to 5 4 2 Signal I...

Page 55: ...G on the SETTING 2 2 screen The LCD SETTING screen appears The LCD setting contains the following items MAINT SETTING SETTING 2 2 screen Refer to 5 3 Maintenance Screen Display page 36 MEAS screen MAI...

Page 56: ...n is misaligned adjust the touch panel 1 Press TOUCH PANEL ADJUSTMENT on the SETTING 2 2 screen The TOUCH PANEL ADJUSTMENT screen appears 2 Press the area indicated by the arrow After completing the a...

Page 57: ...place of the measurement value Setting range 0 to 3 1 y a bx Sets the COD conversion factor a and b by calculating from UV VIS Setting range a 9999 999 to 9999 999 b 0 001 to 9999 999 Up to five pair...

Page 58: ...button on the MEAS SETTING screen Press UV or COD for the following example The setting screen for each measuring component appears The screens show examples for UV and COD MAINT MEAS screen MEAS SETT...

Page 59: ...ng for each measuring component is complete Perform the same procedure to set the measuring range for the other components Note Set the measuring range so as not to exceed the full scale of the measur...

Page 60: ...place and press SET The screen returns back to the MEAS SETTING for each measuring component screen The decimal place setting for each measuring component is complete Perform the same procedure to set...

Page 61: ...ns back to the UV MEAS SETTING screen Unit setting for UV VIS and UV VIS is complete Note In accordance with the change of unit settings for UV unit setting for VIS and UV VIS are also changed In acco...

Page 62: ...tion factor and press SET The screen returns back to the VIS MEAS SETTING screen Unit setting for turbidity correction factor is complete Note Enter the turbidity correction factor when the sample wat...

Page 63: ...rsion factors a and b are available The screen for selecting the factor appears In case of TURB the screen for selecting the factor a or b appears The screen shows an example for COD 2 Select the pair...

Page 64: ...een for selecting the factor a or b 5 Press b x xxx The screen for setting the factor b appears 6 Enter the value of b with the numeric keypad and press SET Input range 0 1 to 9999 9 The described abo...

Page 65: ...The screen shows an example of MAX ALARM VALUE for COD 3 Enter the upper limit value with the numeric keypad and press SET Input range 9999 9 to 9999 9 The described above are provided the sample when...

Page 66: ...screen shows an example of MINIMUM ALARM VALUE for COD 3 Enter the lower limit value with the numeric keypad and press SET Input range 9999 9 to 9999 9 The description above is provided as an example...

Page 67: ...s SET The screen returns back to the TURB MEAS SETTING 2 2 screen Unit setting for turbidity is complete Tip It is common to set deg when the calibration solution is PSL mg L when the calibration solu...

Page 68: ...normally 3 Press CLOSE to return back to the MAINTENANCE screen Press CLOSE to return back to the ON condition automatically Note When checking the action do not touch the cell part and do not direct...

Page 69: ...ost number The screen returns back to CHECK UNIT INFORMATION screen Unit information and ID setting check Checks the unit model and ID etc and sets the ID The ID number is used as the folder name of t...

Page 70: ...During maintenance check when the switch is OFF during maintenance Note Remove the wirings of the unit before checking the contact action as it may affect the external measuring instruments 5 7 4 Che...

Page 71: ...e CHECK screen The CHECK ANALOG OUTPUT screen appears 2 Select the items to output by pressing the button x xxmA change the number by using the and buttons and press OUTPUT Output value 0 00 4 00 8 00...

Page 72: ...nths can be saved for the value of 1 hour LOG DATA deletion Deletes all of the log data GRAPH display Checks the previous readings of data using a graph CAL REPORT check Checks up to 20 history record...

Page 73: ...for the data during the action If multiple actions are overlapping they are displayed in numerical order Tip DELETE Deletes the all of the log data Switches to the previous and next data CHANGE Switc...

Page 74: ...e all data screen appears 3 Press YES The screen returns back to the LOG DATA screen Log data deletion is complete Tip When executing a deletion on the LOG DATA MIN screen all MIN log data is deleted...

Page 75: ...start time of the graph Switches to the previous and next data SET Changes the range of vertical and horizontal axes Changing the start time of the graph 1 Press the START TIME DATE The CALL TIME MIN...

Page 76: ...e GRAPH SETTING screen appears 2 Select the range from VERTICAL VERTICAL HORIZONE and press SET VERTICAL UPPER VERTICAL LOWER indicates the proportion of the graph range in relation to the measurement...

Page 77: ...yed by measurement component and by zero span in chronological order from the latest date The screens show examples for UV Reference About the Calibration coefficient page 15 Tip ZERO SPAN Switches be...

Page 78: ...reen appears 2 Press YES The screen returns back to the CAL REPORT screen Calibration report deletion is complete Tip Though all of the calibration report is deleted the latest calibration value is me...

Page 79: ...ears 3 Confirm that the CF card is inserted and press YES The transferring screen appears When the transfer is complete the screen returns back to the CF CARD menu screen Note Do not remove a CF card...

Page 80: ...een returns to the CF CARD menu screen Note When the CF card is initialized all the data of CF card is deleted Make sure to save the contents before executing initialization Execute initialization of...

Page 81: ...yed value is the same value set for alarm 5 9 1 Alarm Check The instant alarm can be checked here 1 Press the ALARM on the MEAS screen main screen The ALARM screen appears The alarm information is dis...

Page 82: ...ss the ALARM on the MEAS screen main screen The ALARM screen appears and the alarm information is displayed 2 Press RESET The alarm stop screen appears 3 Press YES The screen returns back to the ALARM...

Page 83: ...the information when the alarm was released is shown Tip DELETE Deletes the alarm history 5 9 4 Alarm History Deletion 1 Press the ALARM REPORT on the DATA screen The ALARM REPORT screen appears 2 Pr...

Page 84: ...iagram of Input and Output The input output terminal diagram is shown below Input output terminals are the green terminals under the control unit Note Do not connect the signal line to terminals No 15...

Page 85: ...r analog current output are as follows Reference 5 4 1 Signal Allocation page 37 Measurement item Range example 4 mA output 20 mA output UV 1 Abs 0 Abs 1 Abs VIS 1 Abs 0 Abs 1 Abs UV VIS 1 Abs 0 Abs 1...

Page 86: ...ed and float switch is activated for 5 seconds continuously short circuit OFF when the water level of overflow tank has increased and float switch is canceled for 5 seconds continuously open MAX COD A...

Page 87: ...urning the power ON open POWER OFF O5 fixed Indicates power OFF ON when the power is turned OFF short circuit OFF when power OFF is canceled open MAINTENANCE O6 fixed Indicates the unit is in maintena...

Page 88: ...to allow more than 3 seconds for contact ON time Item Description Input timing NO SAMPLE FLOAT SWITCH Detects NO SAMPLE using the built in float switch Starts when turned ON short circuit for more th...

Page 89: ...ct our service representatives Transmission format Terminal allocation Allocations for terminals are as follows Cable specifications Unit side 3 pin naked wire PC side D SUB 9 pin female connector Bau...

Page 90: ...guration to be saved on the CF card A second folder is created which is named according to the date and hour of the data transfer within the first folder where individual ID numbers are named Example...

Page 91: ...ta status determined by each bit 1 AlmUV UV data alarm determined by each bit 2 AlmVIS VIS data alarm determined by each bit 2 AlmCOD COD data alarm determined by each bit 2 AlmTURB TURB data alarm de...

Page 92: ...to 31 spare Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Binary notation value 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 Hexadecimal...

Page 93: ...e they shall be overwritten RAMDATA CSV Saves the internal setting table Exclusive for service representatives Label name Description YY MM DD HH MM SS year month date hour minute second CalbNo Calibr...

Page 94: ...aning of measuring cell When dirt can be seen Inspection and replacement of wiper blade rubber When dirt can be seen Replacement of desiccant agent and seal washers upper case Periodical replacement e...

Page 95: ...manual These should be performed by service representatives Sampling unit Cleaning of measuring tank overflow tank piping and ball valve When dirt can be seen When clogged Maintenance item Maintenance...

Page 96: ...ould not be viewed directly when it is illuminated as it may damage your eyes If no button is pressed for about two hours on the MAINTENANCE ACTION display the display automatically turns to the MEASU...

Page 97: ...ll rotary shaft V ring seal part 8 Dip the analyzer unit in the calibration tank of zero solution 9 Press the CLOSE button of the control unit several times to return to the MEASUREMENT screen 10 Warm...

Page 98: ...ert the new wiper blade rubber in the reverse order to step 4 Ensure a correct installing direction so that the wiping parts of the wiper blade rubber are located in the direction of cell rotation whe...

Page 99: ...at the UV lamp is not illuminated The UV lamp should not be viewed directly when it is illuminated as it may damage your eyes If no button is pressed for about two hours on the MAINTENANCE ACTION disp...

Page 100: ...he old desiccant agent and replace with the new one attached with this unit square type 5 pieces in 1 set Remove the dirt from the surface of new desiccant agent and put in the analyzer unit with the...

Page 101: ...Lightly wipe off moisture adhered to the measuring cell with soft cloth 5 Remove the 2 brackets from the analyzer unit The following description is the replacement method for the desiccant agent of th...

Page 102: ...ly wipe it off with a soft cloth Tighten the screw after checking that no moisture or contamination is adhered on the seal part of the cell packing 13 Inspect the cell for damage such as breaks or cra...

Page 103: ...amp is not illuminated The UV lamp should not be viewed directly when it is illuminated as it may damage your eyes If no button is pressed for about two hours on the MAINTENANCE ACTION display the dis...

Page 104: ...tank Reference 7 4 2 Removal of Inner Tank of Measuring Tank page 93 5 Remove the sludge from the overflow tank and measuring tank and clean the inside with tap water etc If the flow from the overflo...

Page 105: ...r OFF 2 Remove the analyzer unit and blind plate 3 Hold the inner tank of the measuring tank by both hands and turn counterclockwise to remove it 4 Remove the current plate from the inner tank of the...

Page 106: ...For analyzer unit upper case 4 pieces 1 set Light shielding glasses 1 Ultraviolet light shielding protection glasses from the analyzer unit light source Eye protector of the scale number 4 equivalenc...

Page 107: ...ER ALARM green light on red light on green blinking red blinking Contact batch alarm Contact analyzer alarm Output status Alarm display Alarm history Common WARM UP Warm up output CELL MOTOR ERR Alarm...

Page 108: ...ERR Communication error between analyzer unit substrate and control unit substrate 2 PIO COMM ERR Communication error between control unit CPU substrate and input output substrate Item Status LED POWE...

Page 109: ...the calibration range When zero calibration value is within the calibration range SPAN CAL When span calibration value is out of the calibration range When span calibration value is within the calibr...

Page 110: ...tion for Operation page 12 Clogging of piping to the overflow tank Clean the piping 7 4 Cleaning of Sampling Unit page 92 Failure in float switch for no sample detection Replace the float switch Servi...

Page 111: ...Wiper Blade Rubber page 86 Failure of analyzer unit parts Replace the faulty parts Service call VIS ZERO CAL Incompatible calibration solution Make sure to use distilled water for the calibration sol...

Page 112: ...leaning of Measuring Cell page 84 7 3 2 Inspection and Replacement of Wiper Blade Rubber page 86 LOW Unsuitable lower limit of setting value Review the lower limit of the setting value 5 5 7 Setting o...

Page 113: ...TURB turbidity page 54 Abnormal upper limit of sample water Check the sample water Incompatible calibration solution Perform zero and span calibration 4 Calibration page 15 Contamination of measuring...

Page 114: ...ximately 5 L min Cleaning method cleaning cycle Automatic cleaning by wiper automatic continuous cleaning Display method LCD display 320 240 monochrome graphics LCD data display with dot backlighting...

Page 115: ...card Memory interval 1 minute or 1 hour Memory time on the hour every hour Data memory time interval of 1 minute approximately 10 days interval of 1 hour approximately 1 year The latest data is memori...

Page 116: ...c 1 2 female Overflow outlet 1 Elbow fitting 13A nominal Overflow outlet 2 Elbow fitting 20A nominal Drain outlet Rc 1 2 female Discharge Tube coupling 50A nominal Air release Measuring cell Bypass Ov...

Page 117: ...to the amplitude Wide range measurement becomes possible by selecting the optimum cell length and calculating according to the change of cell length Optical compensation Optical compensation is attain...

Page 118: ...9 5 How to Calculate the COD Conversion Factor If it is judged that there is obviously a linear function between the measurement concentration Xi i 1 2 n and corresponding manual analysis value Y i i...

Page 119: ...http www horiba adt jp Headquarters 31 Miyanonishi cho Kisshoin Minami ku Kyoto 601 8306 Japan TEL 81 75 321 7184 FAX 81 75 321 7291...

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