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9 Analytical Quality Assurance (AQA)

The PipeCheck rapidly and easily determines any
potential pipette errors. While doing so, the photome-
ter identifies pipettes with volume errors of more than
5 % as faulty.

A Spectroquant®

PipeCheck is required to perform

the PipeCheck.

AQA entry

Using AQA MemoChip...

...or via a menu

→

In the setup menu, call up the AQA check sub-
menu.

→

Call up the PipeCheck submenu.

The following display appears:

→

Insert the AQA MemoChip.

→

Insert the reference cell.

After approx. 5 s:

9.2.4

Performing the PipeCheck

Summary of Contents for PhotoLab Spektral

Page 1: ...ba75492e01 1 Schnitt 44 7 cm Schnittanweisung 2 Schnitt 21 0 cm 2 Schnitt 29 7 cm Operating Instructions Part 1 Part 2 General Information Functional Description PhotoLab Spektral 11 2004...

Page 2: ......

Page 3: ...minary Tests VII 3 3 Dilution VIII 3 4 Filtration VIII 3 5 Homogenization IX 3 6 Decomposition IX 4 Pipetting System XI 5 Analytical Quality Assurance AQA XI 5 1 Quality Control at the Manufacturer XI...

Page 4: ...h the concentration of the absorbing sub stance The following connection exists between absorbance and transmittance A log T Experiments by BOUGUER 1698 1758 and LAMBERT 1728 1777 showed that the abso...

Page 5: ...parameter to be determined a number of auxi liary substances that are essential for the course of the reaction These include for example buffers for adjusting the pH to the optimal value for the reac...

Page 6: ...ment In photometry it is conventional practice to measure against the reagent blank value Here the analysis is carried out blind i e without any analyte added Instead of the sample volume the correspo...

Page 7: ...varying influence on the colour reaction and thus on the measurement result The typical tempe rature course is illustrated in the figure at the right If the sample temperature is lower than 15 C fals...

Page 8: ...he zero position Place the tip of the syringe firmly on the leakproof attach ment of the bottle In some cases in which an exact dosage of gene rally small quantities of reagent is called for it is nec...

Page 9: ...with a volume of 500 or 1000 ml are suitable for collecting samples They should be rinsed several times under vigorously sha ken with the water to be investigated and then filled free of air bubbles...

Page 10: ...dilu tions become necessary all the same then this must be done in two separate steps Example Step 1 Make up 2 ml of sample to 200 ml with distilled water DF 100 dilution number 1 99 Step 2 Take 5 ml...

Page 11: ...lly wetted free of air bubbles Filter the contents of the syringe into the intended glass vessel Procedure for microfiltration As a measure to ensure that a representative sample can be taken in the p...

Page 12: ...decomposi tion using concentrated acids and other agents is in dispensible Corresponding examples are described in the Application Compendium obtainable from your local Merck representative see Append...

Page 13: ...trol self monitoring regulations of the German federal states available in english Causes for errors can include the working materials used the handling and or the sample under investigation These err...

Page 14: ...erent quality mode The instrument or the whole system includ ing reagents and all accessories will be checked depending on which quality mode selected All of checking operations can thus be supported...

Page 15: ...cludes checking the working equipment and checking the handling operations The overall system can be checked using standard solutions of a known content preferably with the Spectroquant CombiCheck thi...

Page 16: ...ed to an exact analysis The following questions may serve as a guide in this regard Is the test kit optimal for the measurement assignment in question Is the test kit s measuring range suitable Were t...

Page 17: ...Random errors manifest themselves in the form of a wide range of deviation of the results of a given sam ple These can be kept to a minimum by ensuring good operating techniques and multiple determin...

Page 18: ...690 no 0 4 20 20 COD Cell Test 14541 no 0 4 10 10 COD Cell Test 14691 no 0 4 20 20 COD Cell Test 14555 no 1 0 10 10 COD Cell Test Hg free 09772 no 0 10 10 COD Cell Test Hg free 09773 no 0 10 10 Copper...

Page 19: ...10 10 Phosphate Test 00798 yes 15 20 10 Phosphate Cell Test 14546 yes 20 20 20 Phosphate Test 14842 yes 20 20 20 Potassium Cell Test 14562 yes 20 20 20 Potassium Cell Test 00615 yes 20 20 20 Residual...

Page 20: ...l 4 0 mg l see prep instr COD Cell Test 14540 CombiCheck 10 14676 COD 80 mg l 12 mg l see prep instr COD Cell Test 14895 CombiCheck 60 14696 COD 250 mg l 20 mg l see prep instr COD Cell Test 14690 Co...

Page 21: ...ate Cell Test 14546 PO4 P 15 0 mg l 1 0 mg l 19898 Phosphate Test 14842 PO4 P 15 0 mg l 1 0 mg l 19898 Potassium Cell Test 14562 K 25 0 mg l 4 0 mg l 70730 Potassium Cell Test 00615 K 150 mg l 15 mg l...

Page 22: ...ses its colour Subsequently make up the solution to the mark with distilled water The concentration of the solution is 2 00 mg l bromine Stability The KlO3 stock solution remains stable for 4 weeks wh...

Page 23: ...3 active chlorine 1 09147 1000 Sodium thiosulfate solution 0 1 mol l 0 1 N solution 1 05043 0250 Potassium iodide GR for analysis 1 05445 0500 Zinc iodide starch solution GR for analysis 1 16754 9010...

Page 24: ...ity checked 1000 ml volumetric flask Subsequently make up to the mark with distilled water Preparation of a KlO3 Kl standard solution Transfer 10 5 ml of the KlO3 stock solution to a calibrated or con...

Page 25: ...ml ground glass conical flask and add 50 0 ml buret of iodine solution 0 05 mol l and 20 ml of sodium hydroxide solution 1 mol l Leave to stand for 15 minutes and subsequently add 8 ml of sulfuric aci...

Page 26: ...ol l 1 09136 1000 Sodium hydroxide solution 2 mol l 1 16754 9010 Water GR for analysis Standard solution of hydrogen peroxide Preparation of a stock solution Place 10 ml of Perhydrol 30 H2O2 GR in a c...

Page 27: ...checked 100 ml volumetric flask add 2 0 ml of H2SO4 0 5 mol l leave to stand for 1 min and then add NaOH 2 mol l dropwise approx 1 ml until the solution just loses its colour Subsequently make up the...

Page 28: ...a cool place refrigerator the stock solution remains stable for at most one day The diluted investigational solutions must be used immediately Reagents required 1 09099 1000 Iodine solution 0 05 mol...

Page 29: ...procedure has a concentration of 1000 mg l anionic surfactants Further investigational concentrations may be prepared from this stock solution by diluting accordingly Stability When stored in a cool...

Page 30: ...table for one week The diluted investigational solutions must be used immediately Reagents required 1 12298 0101 Triton X 100 1 16754 9010 Water GR for analysis Standard solution of nonionic surfactan...

Page 31: ...Edition date 06 00 Order no ba 41111e04 Functional description Edition date 04 2004 Order no ba41111e08...

Page 32: ......

Page 33: ...y The war ranty excludes components that are replaced during maintenance such as batteries accumulators lamps etc The warranty claim extends to restoring the meter to readiness for use but not however...

Page 34: ...inuous development This may result in differences between this operating manual and your meter We cannot guarantee that there are absolutely no errors in this manual We are sure you will understand th...

Page 35: ...posal 16 3 Commissioning 17 3 1 Preparing the photometer 17 3 2 Switching on the photometer 19 4 Short manual 21 4 1 Measuring the concentration 21 4 2 Checking the system AQA2 22 5 Measuring the conc...

Page 36: ...52 9 2 2 Output of PhotoCheck standards 53 9 2 3 Performing Photometer monitoring 55 9 2 4 Performing the PipeCheck 59 9 3 Total system monitoring AQA2 61 9 3 1 Entering standards 61 9 3 2 Output of s...

Page 37: ...moChip 105 16 RS 232 C interface 107 16 1 Principle operating sequence of a remote control 107 16 2 Instruction set 107 16 3 Output format of measured values 108 16 4 Data transmission 109 16 5 PIN al...

Page 38: ...8 List of contents...

Page 39: ...he operating elements Display Function keys Recess for MemoChip Notch for cell alignment Round cell shaft Analysis specifications short form Cover with integrated on off switch Rectangular cell shaft...

Page 40: ...the measuring mode Enter the number 1 softkey see section 1 3 2 Enter the number 2 move the cursor up ward Enter the number 3 Enter the number 4 move the cursor one digit to the left softkey see secti...

Page 41: ...suring mode Press The following display appears Example The documentation menu item is preselected in the setup menu Select a menu item e g meter setup Press or until the arrow is in front of the requ...

Page 42: ...croll select by pressing or Character input Using the numeric keypad or by where the digit to be entered is shown in reverse video Confirm the input using Instructions to do something Instructions to...

Page 43: ...mple displays Softkeys to operate the function fields The keys that have a function field next to them in this example act as softkeys to actuate the function fields They lose their original function...

Page 44: ...14 1 Overview Plug of the power supply unit Socket for the power supply unit RS 232 Serial interface Line adaptor Plug in power supply unit 1 4 Identifying the connectors...

Page 45: ...ing to the instructions in this operating manual is authorized Any other use is unauthorized 2 3 General instructions The photometer is constructed and tested according to the EN 61010 1 safety regula...

Page 46: ...loss of any warranty claims 2 3 3 Safe operation It is the responsibility of the operator to continuously observe the overall technical condition externally rec ognizable deficits and damage as well a...

Page 47: ...perature of 5 C to 35 C During transport from cold to warm sur roundings condensation can form result ing in the malfunction of the meter Before putting the photometer into service wait until it has a...

Page 48: ...e photometer Plug the plug in power supply unit into the mains socket An adjustment to the respective line volt age is not necessary Plug the suitable adaptor onto the plug in power supply unit By pus...

Page 49: ...s The 15 minutes warm up time of the photometer runs The clock shows the countdown so that the remaining warm up time is displayed The meter always requires this warm up time even if it has only been...

Page 50: ...ted After the warm up time the first AutoCheck is performed as part of the SelfCheck From this point in time the AutoCheck is repeat ed every 5 minutes as long as no cell is in serted in the cell shaf...

Page 51: ...ode Measuring mode concentration Insert the round cell with barcode containing the prepared sample into the round cell shaft until it clicks into place or First insert the AutoSelector into the round...

Page 52: ...ith the prepared standard solution that is ready to be measured e g using the Spectroquant CombiCheck The photometer reads the barcode identifies the method and performs the AQA check or After the mea...

Page 53: ...ector Align the line mark of the AutoSelector to the notch of the photometer 5 Measuring the concentration For photometrical concentration mea surements it is always necessary to pre pare the sample t...

Page 54: ...s vertically at the right stop of the cell shaft the frosted side to the front The 10 mm cell unlike the 20 mm and 50 mm cells stands loose in the cell shaft and is not guided Place the cell in the ri...

Page 55: ...he notch of the photometer After the measurement is finished The measured value appears on the display Always measure using one cell only The cell shaft which is not used has to be empty Insert the ro...

Page 56: ...photometer only accepts those methods for input that are available for this cell type or Select the method by scrolling with if a cell is inserted the photometer only offers those methods that are ava...

Page 57: ...transmission measurement you have to insert the cell once again to start the measurement Transmission measurement To switch to the absorbance measuring mode Press The transmission measurement is not...

Page 58: ...cks into place Align the line mark to the notch of the photometer After the measurement is finished The measured value for the wavelength displayed at the top right appears This measured value is auto...

Page 59: ...layed at the top right appears This measured value is automatically stored Always align rectangular cells as follows vertically at the right stop of the cell shaft the frosted side to the front The 10...

Page 60: ...ular cell The last wavelength selected manually appears on the display Select the wavelength using the numeric keys of the numeric keypad Start the measurement Press After the measurement is finished...

Page 61: ...means of a Terminal pro gram Press to call up the setup menu The following display appears Call up the documentation menu using The following functions can be selected no of measured value reset the...

Page 62: ...sponding measured value yes The numbering of the measured values begins at 000 again default no Consecutive numbering of the measured values from 000 to 999 Select the menu item Press or Confirm with...

Page 63: ...mber that was last entered initially it is underscores The input is made as follows Capital letters using Numerals via the numeric keypad or using Confirm the input using Confirming the input without...

Page 64: ...es from date all measured values from a special date with ID no all measured values of a specific ID number for method all measured values of a special method AQA all AQA check measurements Select a m...

Page 65: ...od The last ID number entered is preselected Confirm the input using Select the output medium to display to printer PC serial interface Select a menu item using or Confirm with to start the memory dow...

Page 66: ...rd just measured The display shows No of measured value Date Time ID number Method designation Citation form Measured value Unit Where necessary dilution Where necessary AQA I D e g AQA2 if the measur...

Page 67: ...m using or Confirm with Select the output medium to display to printer PC serial interface Select a menu item using or Confirm with to start the method output Each method appears individually on the d...

Page 68: ...one of 103 methods Cancel using 059 14542 0 5 18 0 mg l NO3 N 14 525nm 25 05 99 060 14773 0 5 20 0 mg l NO3 N 10 525nm 25 05 99 062 14828 0 10 7 50 mg l Cl2 10 545nm 25 05 99 063 14897 10 250 mg l Cl...

Page 69: ...Citation form Unit Dilution Call up the setup menu The following display appears Call up the method parameters submenu Scroll through the methods using or enter the method number via the numeric keypa...

Page 70: ...ample Change the citation form from PO4 P to P2O5 Select the citation submenu The current setting PO4 P Using or scroll to P2O5 Confirm with The citation form is set to P2O5 8 1 Citation form 8 1 1 Ch...

Page 71: ...information on this is given in the third part Analytical procedures of this operating manual Enter method 106 Confirm with Call up the menu item citation Using or scroll to Fe II Fe III Confirm with...

Page 72: ...e appears on the display Fe Remove cell 1 Press Start the 2nd measurement by inserting cell 2 After the measurement is finished The 2nd measured value appears on the display Fe II Continue to the disp...

Page 73: ...des any dilution factor entered when calculating the measured value Values from 0 to 99 can be entered as dilution factors Example Input of a dilution of 1 20 i e 1 part sam ple 19 parts distilled wat...

Page 74: ...n measuring mode using Insert the cell Confirm the method The measured value is displayed together with the di lution factor Repeat measurements Insert the cell or start the measurement Confirm the di...

Page 75: ...ring the photometer AQA1 Using a menu to select monitoring the photometer AQA1 monitoring the total system AQA2 After the AQA mode has been activated the AQA check menu item appears in the setup menu...

Page 76: ...rform the AQA check for the photometer see 9 2 3 PERFORMING PHOTOMETER MONITORING or for the system see 9 3 4 PERFORMING TOTAL SYSTEM MONITORING 9 1 Activating AQA 9 1 1 Activating AQA using the MemoC...

Page 77: ...A user defined password protects the settings of the AQA configuration against unauthorized access changing the password see section 9 1 5 Input the password Default 0000 Numerals via the numeric keyp...

Page 78: ...nu item on by pressing or Confirm with return to the setup menu To go to the setup menu twice select and confirm the return menu item In the setup menu call up the AQA check sub menu Select the unit t...

Page 79: ...ethod for concentration measure ments as long as the locking is active Setting ranges Photometer monitoring AQA1 1 to 52 weeks default 12 w Total system monitoring AQA2 1 to 52 weeks default 4 w In th...

Page 80: ...nt is not pos sible for this method The system locking is canceled after the system AQA check has been successfully performed for this method When delivered the default password is 0000 This password...

Page 81: ...in the AQA configuration submenu Input the required password e g 0100 Numerals via the numeric keypad or using Capital letters using Confirm the input using Input the password once again Confirm with...

Page 82: ...call up the meter setup sub menu Call up the AQA configuration submenu Input the password Call up the AQA standards submenu and the fol lowing display appears Call up the PhotoCheck submenu Select be...

Page 83: ...nfirm with Input the tolerance via the numeric keypad Confirm with If required select the next standard by pressing and proceed in the same way In the PhotoCheck standards submenu call up the output m...

Page 84: ...put AQA check of meter AQA1 26 08 99 13 19 AQA interval 12 W test solution Unit theor value tolerance AQA date 445 1 A 0 200 0 020 26 08 99 445 2 A 0 500 0 030 26 08 99 445 3 A 1 000 0 040 26 08 99 44...

Page 85: ...ues stored in the photometer and if necessary correct them according to section 9 2 1 ENTERING PHO TOCHECK STANDARDS Using AQA MemoChip or via a menu Insert the AQA MemoChip In the setup menu call up...

Page 86: ...sting the PhotoCheck standards test solutions are measured Example Insert the L2 cell After the measurement is finished Insert a cell with the test solution 445 1 The photometer measures the absorbanc...

Page 87: ...e section 9 2 1 ENTERING PHOTOCHECK STANDARDS Repeat the measurement plug the cell in again Exchange the test solution each packet contains two identical test solutions If necessary perform a zero adj...

Page 88: ...26 08 99 10 23 Operator AQA interval 12 W AQA check of meter ok L check ok test solution Measured value Unit theor value tolerance result 445 1 0 209 A 0 200 0 020 ok 445 2 0488 A 0 500 0 030 ok 445...

Page 89: ...es with volume errors of more than 5 as faulty A Spectroquant PipeCheck is required to perform the PipeCheck AQA entry Using AQA MemoChip or via a menu In the setup menu call up the AQA check sub menu...

Page 90: ...Check OK or error message After approx 5 s Return to the AQA check menu using AQA check PipeCheck 15 06 99 15 38 Operator PipeCheck result 3 0 ml PipeCheck ok If a test cell unsuitable for the referen...

Page 91: ...hen the tolerances for finding it again have been input i e it is then first stored no premature quitting In the setup menu call up the meter setup sub menu Call up the AQA configuration submenu Input...

Page 92: ...ce 0 7 mg l CombiCheck 20 Confirm with Input the new theoretical value e g 8 0 mg l via the numeric keypad Values in parentheses indicate the range in which the theoretical value should move Confirm w...

Page 93: ...e output submenu Confirm with Select the output medium to display to printer PC serial interface Select using or Confirm with to start the output AQA check of system AQA2 26 08 99 13 57 AQA interval 4...

Page 94: ...e change of the measured value identification from AQA2 to AQA1 with activated AQA mode and successfully performed meter monitoring Call up the standard solutions submenu Select the erase functions wi...

Page 95: ...ady to be measured e g using the Spectroquant CombiCheck The photometer reads the barcode identifies the method and per forms the AQA check or Insert the reference cell After the measurement is finish...

Page 96: ...itored The release is stored with the date and the sys tem AQA interval set up for the respective method is restarted AQA check of system AQA2 26 08 99 11 02 Operator AQA interval 4 W method Measured...

Page 97: ...appears Call up the spectrum menu item In the spectrum menu call up the graphic para meters menu item Possible settings for the spectrum graphic Dimension of the y axis Use or to select between A Abs...

Page 98: ...00 A default 0 000 A to 2 500 A graphic parameters submenu Confirm unit A with Use or to select manual scaling Confirm with Input the coordinate limits required for both axes via the numeric keypad Co...

Page 99: ...moves the cursor on the curve to the right or the left The key moves the cursor to the highest point of the curve The key moves the cursor to the lowest point of the curve The upper display line indic...

Page 100: ...zoom window are displayed en larged zoom return to the original graphic with The table lists the wavelengths of the measured spec trum in steps of 1 nm and the respective absorbance or transmission va...

Page 101: ...measurement The message measuring appears on the display After the measurement is finished The baseline has been measured and stored Return to the spectrum menu using Select the measure spectrum funct...

Page 102: ...the smallest interval of 10 sec onds The wavelength can also be selected The kinetic measured values are stored in the memory in the same way as the measured values from single measurements older meas...

Page 103: ...s and displays the maximum measuring duration measuring interval x 999 Confirm with Possible settings for the graphic Dimension of the y axis Use or to select between c concentration A Absorbance T Tr...

Page 104: ...select manual scaling Input the coordinate limits required for the y axis via the numeric keypad Confirm each time using The kinetic parameters are stored The meter returns to the kinetics menu The s...

Page 105: ...tervals The following information is given in the upper display area from left to right the time until the next single measurement the countdown runs the present duration of the measurement the time r...

Page 106: ...printout of the display LQ300 printer with printer cable required accessories Return to the kinetics menu Press table then return Use the cursor keys to determine the upper left hand corner of the zoo...

Page 107: ...oll through the measuring times with print Print using graphic Switch to the graphic using return Return to the kinetics menu not to the graphic using kinetics start 09 11 99 15 46 08 000 abs 09 11 99...

Page 108: ...memory in the same way as the measured values of the difference measurements the three values of each color mea surement are given the same consecutive number or ID number In the setup menu call up th...

Page 109: ...eter setup sub menu The following display appears Call up the correction funct submenu The following display appears Select the correction function blank value reference absorbance reference transmiss...

Page 110: ...the photometer When the blank value function is active the stored val ue is ignored and the measured value of a self pre pared reagent blank solution is used instead This procedure increases the measu...

Page 111: ...s one sin gle blank value each time for a whole series of measurements After the measurement is finished Call up the concentration measuring mode by pressing Insert the measuring cell The value measur...

Page 112: ...ference absorbance Each absorbance measurement is made against the basic absorbance stored in the meter When measuring the reference absorbance this value is ignored and the value measured as the refe...

Page 113: ...appears on the dis play After the measurement is finished The measured value for the wavelength displayed at the top right appears Insert the measuring cell After the measurement is finished The meas...

Page 114: ...sion measurement is made against the basic transmission stored in the meter When measuring the reference transmission this val ue is ignored and the value measured as the reference transmission is use...

Page 115: ...e Insert the cell to start a measurement The message measuring appears on the dis play After the measurement is finished The transmission value for the wavelength displayed at the top right appears In...

Page 116: ...together with a warning high turb 11 4 Turbidity correction Turbidity correction is used in sample solutions that contain finely distributed suspended particles The suspended particles cause a light a...

Page 117: ...ained in the scope of delivery of the Photo Check article 14693 If the round cell is visibly contaminated or at least every 24 months clean and refill it minimum filling level 20 mm Then check the cel...

Page 118: ...display appears Call up the zero adjustment submenu Insert a cell with distilled water The message measuring appears on the dis play After approx 2 s Remove the cell The photometer performs an AutoCh...

Page 119: ...d Confirming with starts the measurement The photometer only allows the input of method numbers for which a method is stored 13 User defined methods User defined methods can be stored under code num b...

Page 120: ...avelength 585 citation form COD unit mg l Enter letters using numerals via the numeric keypad Confirm each time using Selecting the resolution defines the numeric display of the beginning and end of t...

Page 121: ...e the photometer determines the slope and zero point of the new method At this point the photometer provides practical default values for the AQA theoretical value and tolerance They can be overwritte...

Page 122: ...l in the table using Erase If the input or measurement is incorrect or in case of outliers a pair of values can be erased by pressing twice It is then possible to measure once again On leaving the tab...

Page 123: ...e A c 0 000496 corr coefficient 0 997 The graphic shows the course of the absorbance in the defined measuring range In addition the slope S zero point A0 and correlation coefficient r2 are dis played...

Page 124: ...e Scroll using To store the new method and return press The method data is automatically printed The method data display is used to view the data of the new user defined method again The photometer st...

Page 125: ...000 Meas range begin Meas range end Reference cell not equal to 10 mm 14 mm 20 mm or 50 mm Designation of the wavelength does not agree with the photometer Resolution not 0 1 0 01 Further information...

Page 126: ...ll user defined methods are printed sequentially as a list Cancel using Date Time user def methods code no 301 designation TEST1 wavelength 690 nm unit mmol l citation form C6H5OH resolution 0 1 zero...

Page 127: ...ned methods single Selectively erase individual methods Confirm with Select the method e g TEST1 Input the method number 306 via the numeric keypad or Scroll with Confirm with Select the menu item era...

Page 128: ...98 13 User defined methods...

Page 129: ...the meter set up menu select language set date time reset system info German Polish Dutch English Danish Indonesian French Swedish Czech Italian Spanish Hungarian Portuguese Select the menu item sele...

Page 130: ...onfirm with Input the time via the numeric keypad Confirm with All AQA functions are retained when meter setup is used See section 9 1 6 for AQA reset Call up the menu item reset Select between total...

Page 131: ...ter setup Example Performing a total reset Select the reset menu item Confirm with A meter reset is performed measured value store and setup Call up the system info menu item Sample display 14 4 Syste...

Page 132: ...102 14 Photometer setup...

Page 133: ...l method data are reloaded into the pho tometer with the update The old method data are overwritten by this Possibly existing user defined methods are erased with this update and have to be entered ag...

Page 134: ...data are stored in the photometer To do so proceed as follows Call up the system info menu item Sample display the software version is irrelevant here The method version here 8 00 has to agree with t...

Page 135: ...Place the MemoChip in the recess see also sec tion 1 1 Switch on the photometer open the cover If several MemoChips are required for a method ensure the correct sequence is followed The following disp...

Page 136: ...oChip is transferred continuation display After the data transfer is complete the following dis play appears The 15 minutes warm up period of the photometer fol lows the photometer then automatically...

Page 137: ...mote CLOC CR Concentration measurement The keyboard of the photometer is locked in the Remote operating mode Command Function S Begin communication CLOC Switchover to normal operation concentration me...

Page 138: ...e with the cell coding Optional pa rameters MMM and LLL need only be in put for uncoded cells Character Meaning 3 consecutive number not required for interface commands CMES CEXT and CBLA 5 method des...

Page 139: ...15 m Photometer Computer Printer Allocation 9 pin socket 9 pin socket 25 pin plug with RS 232 C interface 1 4 20 4 2 3 2 3 TXD 3 2 3 2 RXD 4 1 and 6 6 1 and 6 5 5 7 5 SG 6 4 20 4 7 8 5 8 8 7 4 7 DTR...

Page 140: ...110 16 RS 232 C interface...

Page 141: ...ometer using a screwdriver Unscrew the screw and make sure it does not fall into the housing Remove the lamp with its holder by pulling it gently upwards Pull out the plug Dispose of the lamp with the...

Page 142: ...ng see section 9 2 Keep the photometer free of dust and dirt as possi ble Clean the housing surfaces with a soft damp cloth and aqueous soap solution Do not use any cleaning detergents that contain so...

Page 143: ...f the photometer The following display appears Press the button at the right side of the photo meter to throw out the old Memory Card Insert the new Memory Card in the opening The label with the type...

Page 144: ...114 18 Exchanging the Memory Card...

Page 145: ...range of absorbance 0 300 A to 3 200 A Balancing Permanently stored Drift correction Automatic on each SelfCheck Rest drift without drift correction typical 2 mA h at 525 nm without AutoCheck constan...

Page 146: ...perature Storage 25 C to 65 C Operation 5 C to 35 C Allowable relative humidity Annual mean 75 30 days year 95 other days 85 Test certificates CE Operating devices On Off switch actuated by opening cl...

Page 147: ...xpired Off AQA2 values none Citation forms of the methods respective reference citation Units of the methods respective reference unit Settings after reset total Measured value storage and setup reset...

Page 148: ...tion of this operating manual FCC Class A Equipment Statement Note This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules...

Page 149: ...lue which is an approximate value for possible dilutions Use a method with a suitable measu ring range or If the measuring range is exceeded dilute the sample or With a reagent test use a different re...

Page 150: ...lected method Update method data see chapter 15 UPDATING METHOD DATA Wrong method During a difference measure ment the method was changed between the first and second measurement Perform the second me...

Page 151: ...breviations The list of abbreviations explains display indications and abbreviations that occur when dealing with the measuring instrument Glossary The glossary briefly explains the meaning of the spe...

Page 152: ...122 21 Appendix 21 1 Menu structure of the setup menu...

Page 153: ...123 21 Appendix...

Page 154: ...124 21 Appendix...

Page 155: ...system monitoring auto automatic A Absorbance abs Absorbance L1 L2 Cells to check the light barrier in the photometer L check Light barrier check in the photometer mg l Milligrams per liter mmol l Mi...

Page 156: ...nce transmissions Blank value reagent blank value Absorbance value received when measuring with pho tometrical methods using distilled water as the test sample Color Defined in EN ISO 7887 CombiCheck...

Page 157: ...mission stored in the photometer can be replaced by an own measurement Spectrum Distribution of the intensity transmission or absor bance depending on the wavelength Standard Sample with a defined con...

Page 158: ...ring the concentration 23 MemoChip 22 MemoChip AQA 46 Memory Card 17 Memory of measured values 34 Menu items 11 Menu structure 122 Method data Updating 103 Method parameters 39 Methods list 37 O Opera...

Page 159: ...129 21 Appendix User defined methods 89 W Warm up time 19 Warranty 3 What to do if 119 Z Zero adjustment 87 Zero point 91...

Page 160: ......

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Page 162: ...Wissenschaftlich Technische Werkst tten GmbH Dr Karl Slevogt Stra e 1 D 82362 Weilheim Germany Tel 49 0 881 183 0 49 0 881 183 100 Fax 49 0 881 183 420 E Mail Info WTW com Internet http www WTW com...

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