wtw inoLab 740 Operating Manual Download Page 94

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Ion concentration

7.1.3

Measured value resolution of voltage display

See section 6.1.3

7.1.4

Resetting to default settings

No default settings are specified for ion-selective
measurements.

Confirm the

ISE

menu item with

The

ISE

display is active (

✔

Terminate the

Menu

mode with

The ion concentration appears on the display (mg/l).

Summary of Contents for inoLab 740

Page 1: ...perating manual inoLab Level 3 measuring system with active multifunction boxes and inoLab Level 3 terminal AR AR R RUN UN ENT ER ENT ER inoLab inoLab R RUN UN ENTE R ENTE R CAL CAL inoLab inoLab AR A...

Page 2: ...e The instrument warranty covers manufacturing faults that are discovered within the warranty period The warranty does not cover components that are replaced during maintenance work e g batteries The...

Page 3: ...5 1 Checking the version no of the terminal firmware 29 3 5 2 Starting the update of the terminal firmware 30 4 Basic principles of operation 33 4 1 Display 34 4 1 1 Status display indicators 34 4 1 2...

Page 4: ...5 7 Password for user names 66 5 7 1 Changing the password 66 5 7 2 Assigning a password 67 5 7 3 Forgotten the password 68 5 8 Modules 69 6 pH 71 6 1 Settings for pH 71 6 1 1 Displaying pH ISE or me...

Page 5: ...dd 119 7 4 4 Standard Subtraction Std Sub 122 7 4 5 Sample Addition Smp Add 125 7 4 6 Sample Subtraction Smp Sub 127 7 4 7 Standard addition with blank value correction Bw Add 131 8 Dissolved oxygen D...

Page 6: ...ting up the cell constant 182 10 2 1 Determining the cell constant calibration 182 10 2 2 Setting the cell constant 186 10 3 Measuring the conductivity 190 10 3 1 General information 190 10 3 2 Displa...

Page 7: ...5 Outputting data to an external printer or PC 229 12 4 Outputting data to the external recorder 230 13 Maintenance cleaning disposal 233 13 1 Maintenance 233 13 1 1 Replacing the batteries 233 13 1 2...

Page 8: ...List of contents 8 15 6 Conductivity 258 16 Lists 261 16 1 Abbreviations 262 16 2 Glossary 264 16 3 Index 271...

Page 9: ...pilot software is described in a separate operating manual The newest software version of MultiLab pilot is available on the Internet under http www wtw com Note Information on other accessories is gi...

Page 10: ...xes pH pH ION Oxi BSB BOD Cond pH Oxi pH Cond and Multi Each inoLab Level 3 measuring module has its own fixed software in order to process the probe signals and to communicate with the terminal A det...

Page 11: ...e via the connection cable 1 2 1 Display The measured value active functions or settings and available menu items that are displayed always correspond to the active probe and the selected measured var...

Page 12: ...also operate the AutoRead function drift control on the measuring module The LED on the measuring module shows the AutoRead status The topmost row of keys on the terminal consists of softkeys Each sof...

Page 13: ...lug in power supplies only see chapter 15 TECHNICAL DATA Connections 1 Plug in power supply unit 2 inoLab Level 3 measuring module 3 RS 232 interface analog output 4 IBM PC keyboard via adapter cable...

Page 14: ...nnected PC and a special update program The details of the update are given insection 3 5 and in the installation program for the update Note Further information on the latest software version is avai...

Page 15: ...within the vicinity of the measuring system Target group The measuring system was developed for use in the laboratory Thus we assume that as a result of their professional training and experience the...

Page 16: ...tion and operating safety The smooth functioning and operational safety of the measuring system can only be guaranteed if the generally applicable safety measures and the specific safety instructions...

Page 17: ...conditions for a lengthy period of time l is visibly damaged l no longer operates as described in this manual If you are in any doubt please contact the supplier of the measuring system Obligations of...

Page 18: ...Safety 18...

Page 19: ...ace cable AK T PC for data transmission on the PC and software update l Measuring module active multifunction box inoLab Level 3 measuring module depending on how the set is made up Connecting cable A...

Page 20: ...ks as follows 1 Cable holder 2 Stand rod 3 Opening to the cable shaft 4 Connection cable to the terminal AK M T 6 Locking holder 7 Beaker with test solution 8 Probe 9 Freely adjustable probe holder 10...

Page 21: ...terminal l Connect the plug in power supply l Connect the system upgrades Preparing the module 1 Place the measuring module on a flat surface and protect it from intense light and heat 2 Insert the st...

Page 22: ...tirrer StirrOx G 15 Reference electrode 16 Temperature probe 7 Plug the probe 8 on the measuring module into the respective socket 12 or 13 8 If necessary insert the plug for the temperature probe of...

Page 23: ...it is stored safely 13 Plug the connecting cable to the terminal AK M T into the socket 17 14 Place the terminal on a flat surface near the measuring module and protect it from intense light and heat...

Page 24: ...original plug in power supply unit Use original plug in power supplies only see chapter 15 TECHNICAL DATA 16 Plug the external temperature probes into the sockets 15 and 16 17 Plug the StirrOx G oxyge...

Page 25: ...ket 21 of the terminal 2 Fit the country specific adapter 23 onto the plug in power supply 24 3 Plug in the original WTW plug in power supply 24 to an easily accessible wall socket The system is in th...

Page 26: ...hem from intense light and heat 2 Press the e key or Online on the terminal The measuring module and probe are initialized 3 As soon as the measuring module and probe have been initialized a selection...

Page 27: ...Commissioning 27...

Page 28: ...apter 5 SYSTEM SETTINGS l Language selection chapter 5 SYSTEM SETTINGS l Data storage settings chapter 11 DATA STORAGE l Printer settings chapter 12 DATA OUTPUT l Temperature unit section 5 5 1 TEMPER...

Page 29: ...B free storage l A free serial COM interface l Interface cable AK T PC see section 3 1 SCOPE OF DELIVERY Note The update takes approx 20 min 3 5 1 Checking the version no of the terminal firmware 1 Sw...

Page 30: ...entry in the Windows start bar in the standard installation under Start Programme Firmware Update inoLab Terminal V x x 4 Start the update program The Terminal Programming window opens and displays i...

Page 31: ...Press Offline 11 Release both keys The Terminal Programming window shows the current status of the update in 12 Wait for display to reach 100 The firmware update has been carried out 13 Briefly unplu...

Page 32: ...Commissioning 32...

Page 33: ...he menu softkey l Menu mode The display shows open menus and submenus For example you can operate or set up the following functions here measuring functions calibration functions memory functions prin...

Page 34: ...ad function is active h flashes A measurement with AutoRead is active i AutoRange is active jd Automatic pH calibration with standard buffer solutions prepared according to DIN 19267 is active jt Auto...

Page 35: ...surement only Temperature compensation lin is active 7 Conductivity measurement only No temperature compensation TC off 3 Only when the StirrOxG D O probe with integrated stirrer is connected Operatin...

Page 36: ...tkey only ESC Switches to the next higher menu level in the Menu mode or quits the Menu mode left hand softkey only Tab Swaps between different displays that are open at the same time e g graphical di...

Page 37: ...pt example Baud rate 2400 Selectable function setting the function setting can be selected by pressing 82 Tick example Baud rate 4800 Active setting Arrow example Setup After selecting and confirming...

Page 38: ...s of measurements l Digital recorder display Display of a measured value Example Display of the pH value Display of two measured values multiparameter measuring instruments Example Simultaneous displa...

Page 39: ...ection 11 1 2 can be displayed in the form of a graph Sections of the graph can be zoomed You can print out the current display Digital recorder display Example Digital recorder for measurement of the...

Page 40: ...the terminal and on the measuring module l a key to activate the AutoRead function l g key to start a measurement with AutoRead An LED indicates whether the AutoRead function is active If the measuri...

Page 41: ...edure 4 Print LED only on the terminal with integrated printer red printer off offline or malfunction green printer ready for operation online 5 Switches the printer on off only on the terminal with i...

Page 42: ...Displays transmits measured values 13 Status indicator of the AutoRead function LED off AutoRead function is deactivated LED lights up AutoRead function is activated LED flashes AutoRead measurement h...

Page 43: ...on the function block of an IBM PC keyboard In addition the following keys of the PC keyboard have been allocated to the following functions on the terminal Note To connect a PC keyboard to the termin...

Page 44: ...measuring with the connected measuring module and sensor l The main Cal menu contains the settings for calibrating the connected measuring module and probe l The main Mem menu contains functions to s...

Page 45: ...and the last menu item used e g Setup is selected The ESC softkey is available A submenu with further settings is available Selectable function Active function Action Key Switch to the next higher me...

Page 46: ...emperature unit Starting point pH measurement in the Display mode 1 Change to the Menu mode with Menu 2 Use 46 to select the main Opt menu 3 Select the Setup menu item with 82 4 Confirm the Setup menu...

Page 47: ...he Temp Unit menu item with g 7 Using 82 confirm the Celsius or Fahren setting 8 Confirm the selected temperature unit with g The selected temperature unit is active 9 Terminate the Menu mode with m T...

Page 48: ...sured value and the measured temperature value Graphical display Display of the measured data records stored with AutoStore in the form of graphs The graph can be output to a printer see chapter 12 DA...

Page 49: ...he output of individual measured data records with the p softkey Printing data from the memory is started via Print functions in the menu If the digital recorder is on the course of the measurement is...

Page 50: ...Basic principles of operation 50...

Page 51: ...e 2 Select the main Opt menu with 46 3 Select the Setup menu item with 82 4 Confirm the Setup menu item with g 5 Select the Time menu item with 82 6 Confirm the Time menu item with g The Date Time win...

Page 52: ...menu item with g 5 Select the Language menu item with 82 6 Confirm the Language menu item with g 7 Select the English or German language with 82 8 Confirm the language selection with g The language is...

Page 53: ...46 3 Select the Setup menu item with 82 4 Confirm the Setup menu item with g 5 Select the Display menu item with 82 6 Confirm the Display menu item with g 7 Select the Contrast menu item with 82 8 Co...

Page 54: ...tup menu item with g 5 Select the Display menu item with 82 6 Confirm the Display menu item with g 7 Select the BckLight menu item with 82 8 Confirm the BckLight menu item with g The display illuminat...

Page 55: ...t the same time Selecting acoustic signals 1 Switch to the Menu mode 2 Select the main Opt menu with 46 3 Select the Setup menu item with 82 4 Confirm the Setup menu item with g 5 Select the Signal me...

Page 56: ...e values manually 5 5 1 Temperature unit You can display temperature values in C degrees Celsius or F degrees Fahrenheit 1 Switch to the Menu mode 2 Select the main Opt menu with 46 3 Select the Setup...

Page 57: ...dicated on the display by v y or z Using the temperature probe integrated in the probe When you use probes with an integrated temperature probe the measured parameter and temperature are always measur...

Page 58: ...Confirm the pH setup menu item with g 6 Select the O2 Cond TP menu item with 82 7 Confirm the O2 Cond TP menu item with g The temperature measurement is active 8 Terminate the Menu mode with m y or z...

Page 59: ...he temperature value with 82 5 Option Switch between the individual digits with 46 6 Set up the temperature value with 82 7 Confirm the temperature value with g 8 Terminate the input with ESC The disp...

Page 60: ...l to save all settings l to enable disable the login with the user name Anonymous l to set up delete user profiles Anon ymous free l to measure all measured variables l to calibrate all measured vari...

Page 61: ...istrator can disable or enable this access see section 5 6 3 The password 0001 is the default setting for the user name Admin when the instrument is delivered The administrator login with the user nam...

Page 62: ...put the password for the user name with 82 and 46 6 Confirm the password with OK Access to the settings in the offline mode is opened 7 Switch to the menu mode with Menu 8 Select the Opt menu with 46...

Page 63: ...with Next 5 Confirm the change with g The OFF status appears in the field next to Anonymous in the Administration window The login with the user name Anonymous is disabled 1 Open the Administration w...

Page 64: ...e user name with OK A dialog opens for changing the Name or Setting of the user profile 4 Swap to the Setting field with Next 5 Select one of the settings 1 4 with 82 6 Confirm the Name and Setting wi...

Page 65: ...ist of all user profiles Complete contains all current and all deleted user profiles which have been used for at least one login Note A consecutive number for each user profile is also assigned intern...

Page 66: ...password 0000 is not allowed 1 Swap to standby mode 2 Swap to the selection of the user name with Online or Offline 3 Select a user name with 82 4 Confirm the selection of the user name with OK The d...

Page 67: ...er profile is possible without this password Note The password has 4 numerical digits The password 0000 is not allowed 1 Swap to standby mode 2 Swap to the selection of the user name with Online or Of...

Page 68: ...ut a password The administrator can delete and recreate the user profile see section 5 6 3 Admin In emergencies it is also possible to log in with the user name Admin using a special enabling code obt...

Page 69: ...e user name with which the calibration was performed appears on the display during the prompt of a calibration protocol and the module appears in the Registered modules list This list contains all reg...

Page 70: ...les 1 Open the Administration menu see section 5 6 1 2 Select the Module menu item with 82 3 Confirm the Module menu item with OK The Module register window opens 4 Select a Module menu item with 82 5...

Page 71: ...em if necessary before a measurement 6 1 1 Displaying pH ISE or measured voltage values For pH measurements the inoLab Level 3 enables rapid switching between the display of the pH value pH and the vo...

Page 72: ...variable ISE or pH is made in the main Meas menu The active pH or ISE setting is marked with Measured variable pH 1 Switch to the Menu mode 2 Use 46 to select the main Meas menu 3 Select the pH menu i...

Page 73: ...unchanged Note If you expect voltages outside the range 999 9 mV to 999 9 mV and want to connect a recorder deactivate U AutoRange Otherwise the recorder scaling at the range limits will change Measu...

Page 74: ...f the high resolution pH high resol is switched off measurement is carried out over the entire pH range with a resolution of 0 01 Measured value resolution pH 1 Switch to the Menu mode 2 Use 4 6 to se...

Page 75: ...t pH function all the settings for pH measurements are reset to the default values Measuring mode pH Asymmetry UAsy in mV 0 mV Slope S k in mV 59 16 mV Calibration procedures AutoCal TEC Temperature m...

Page 76: ...selected for buffer solutions in the pH buffer menu ConCal is the conventional two point calibration method and single point calibration is the simplified calibration method AutoRead When calibrating...

Page 77: ...Cal Date 05 12 1999 Cal Time 22 46 Cal Interval 7 days AutoCal TEC Tman AR Buffer 1 2 00 Buffer 2 4 01 Buffer 3 7 00 Buffer 4 10 00 C1 290 6 mV 25 C C1 174 5 mV 25 C C1 0 2 mV 25 C C1 174 6 mV 25 C S...

Page 78: ...TEC 2 00 4 01 7 00 10 00 25 C Standard buffer solutions according to DIN 19266 Buffer DIN 1 679 4 006 6 865 9 180 12 454 25 C Merck company Titrisole buffers and buffer solutions Riedel de Haen compan...

Page 79: ...tem with 82 4 Confirm the pH caltype menu item with g 5 Use 82 to select the AutoCal or ConCal menu item 6 Confirm the selected menu item with g The selected calibration procedure is active 7 Select t...

Page 80: ...change the interval 1 999 days For most applications we recommend a shorter calibration interval 1 Switch to the Menu mode 2 Use 46 to select the main Cal menu 3 Use 82 to select the Cal Int menu item...

Page 81: ...of the next buffer solution before a new buffer solution is used The display e g ct1 here has the following meaning 1 Use m and or 46 to display the pH value 2 Connect the pH electrode to the measuri...

Page 82: ...see section 6 2 1 2 Select the buffer data record see section 6 2 1 3 Perform the preparatory activities see section 6 2 2 4 Start the calibration procedure with c ct1 appears on the display 5 If nec...

Page 83: ...with g The h display indicator flashes The electrode voltage mV appears on the display As soon as a stable value is reached h disappears The slope value mV pH and the asymmetry value mV appear on the...

Page 84: ...ue is reached h disappears The probe symbol shows the calibration evaluation after the three point calibration The value of the slope S in mV pH and the value of the asymmetry in mV appear on the disp...

Page 85: ...r 12 DATA OUTPUT and section 12 2 4 PRINTING 21 Press the g key The h display indicator flashes The electrode voltage mV appears on the display As soon as a stable value is reached h disappears The pr...

Page 86: ...buffer solutions must have the correct temperature If you use a temperature probe it is not necessary to enter the temperature manually 1 Select the ConCal calibration procedure section 6 2 1 2 Perfor...

Page 87: ...d the temperature probe in the second buffer solution 14 If necessary set the measured temperature value of the second buffer solution with 82 15 Use Adj Asy to call up the input field for the nominal...

Page 88: ...rd is automatically printed if the printer is ready for operation Information on setting up a printer and on the printout of further calibration protocols is given in chapter 12 DATA OUTPUT and sectio...

Page 89: ...or a conductivity measuring cell see section 5 5 2 MEASURING THE TEMPERATURE If you use the temperature probe of a D O probe or a conductivity measuring cell y or z appears on the display 1 Connect t...

Page 90: ...d variable after completion of the AutoRead function 2 Immerse the pH electrode in the test sample The display shows the current measured value 1 Call up the Display mode with m 2 Call up the pH measu...

Page 91: ...hat when measuring voltages it can take a long time even several hours until the measured value becomes stable ORP electrodes are not calibrated However you can check ORP electrodes using a test solut...

Page 92: ...pH 92...

Page 93: ...y of the pH ISE value pH and voltage U 7 1 2 Setting up the ISE display Ion selective electrodes are connected to the pH U connector of the measuring module The selection of the measured variable ISE...

Page 94: ...play See section 6 1 3 7 1 4 Resetting to default settings No default settings are specified for ion selective measurements 4 Confirm the ISE menu item with g The ISE display is active 5 Terminate the...

Page 95: ...select the main Meas menu 3 Select the ISE menu item with 82 4 Select the ISE setup menu item with 82 5 Confirm the ISE setup menu item with g 6 Select the Unit menu item with 82 7 Confirm the Unit m...

Page 96: ...of the sample with 82 Continue with step 13 13 Confirm the entry with g or ESC The units change over 14 Switch to the measured value display 1 Switch to the Menu mode 2 Use 46 to select the main Meas...

Page 97: ...trode in the blank value solution 13 Select Yes with Next 14 Confirm Yes with g 15 Terminate the blank value determination with ESC The symbol no longer flashes The displayed measured value is reduced...

Page 98: ...l on the measured value display Perform a calibration see section 7 3 3 Switch to the display of the voltage U with m 4 Switch to the Menu mode 5 Use 46 to select the main Meas menu 6 Select the ISE m...

Page 99: ...entration 99 14 Select the input field R with Next 15 Enter the reference concentration R with 82 16 Use ESC to leave the input field The measured voltage value is referred to the new reference concen...

Page 100: ...ease until a measured value is evaluated as stable 1 Switch to the Menu mode 2 Use 46 to select the main Meas menu 3 Select the ISE menu item with 82 4 Confirm the ISE menu item with g 5 Select the IS...

Page 101: ...le l After connecting another electrode l When the sensor symbol flashes after a voltage disconnection e g battery change ISECal This is the conventional two point or three point calibration procedure...

Page 102: ...green After a valid calibration the record is printed Sample printout Electrode evaluation After the calibration the measuring system evaluates the current status of the electrode At the same time th...

Page 103: ...h e 2 Connect the electrode to the measuring module 3 Connect a temperature probe to the measuring system so that any temperature differences that are too high will be indicated during calibration 4 K...

Page 104: ...order Note The measurement precision is also dependent on the selected standard solutions Therefore the selected standard solutions should cover the expected value range of the subsequent concentratio...

Page 105: ...t the concentration of the first standard solution is displayed 4 Use 82 to enter the concentration of the first standard solution 5 Immerse the electrode in standard solution 1 6 Press the g key The...

Page 106: ...rse the electrode in standard solution 2 11 Press the g key The electrode voltage is displayed and the h display indicator flashes 12 As soon as a stable value is reached h stops flashing The slope mV...

Page 107: ...libration or Continue to the three point calibration with g 14 Press the g key The previously set up concentration of the third standard solution appears on the display 15 Use 82 to enter the concentr...

Page 108: ...tion curve is determined by linear regression 19 As soon as a stable value is reached h stops flashing The slope mV of the electrode is displayed The probe symbol shows the electrode evaluation after...

Page 109: ...precision is also dependent on the selected standard solutions Therefore the selected standard solutions should cover the expected value range of the subsequent concentration measurement Standard sol...

Page 110: ...nized water 5 Immerse the electrode in the next standard solution 6 Press the g key The electrode voltage is displayed and the h display indicator flashes 7 As soon as a stable value is reached h stop...

Page 111: ...libration prematurely with m The values of the previous calibration the remain stored The calibration curve is determined by spline interpolation 8 For carrying out a multipoint calibration Repeat ste...

Page 112: ...erature probe of another probe or without a temperature probe The temperature probe that is used is indicated on the display by v y or z Note The measuring system automatically recognizes the type of...

Page 113: ...e for a longer period of time 1 Perform the preparatory activities according to section 7 4 2 Immerse the electrode in the test sample 3 Press the m key until ISE appears The concentration value appea...

Page 114: ...Ion concentration 114 In order to accept the current measured value without waiting for the end of the AutoRead function press g...

Page 115: ...Bw Add 1 Switch on the measuring system with e 2 Connect the electrode to the measuring module 3 Connect a temperature probe to the measuring system so that any temperature differences that are too h...

Page 116: ...opens 12 Select a method with 82 13 Confirm the method with g Measurement with the selected method begins 1 Select the measuring method see section 7 4 1 2 Prepare two standard calibration solutions...

Page 117: ...6 Enter Sample volume and ISA TISAB volume with 82 and Next 7 Thoroughly rinse the electrode with deionized water 8 Immerse the electrode in the sample 9 Start the measurement with Start 10 Add the s...

Page 118: ...on type with 82 and Next 13 Terminate the measurement with Start 14 Start a new measurement with Next 15 Repeat steps 7 13 for all samples 16 Terminate the measurement with ESC A security prompt appea...

Page 119: ...e first and second addition of standard solution To ensure reproducibility the second addition of standard solution must use a volume that is twice as big as the volume used in the first addition Meas...

Page 120: ...art the measurement with Start A window for the entry of data opens 8 Enter Standard volume Standard concentration and Ion type with 82 and Next 9 Continue the measurement with Start 10 Add the standa...

Page 121: ...121 12 Start a new measurement with Next 13 Repeat steps 1 12 for all samples 14 Terminate the measurement with ESC A security prompt appears 15 Select Yes with Next 16 Confirm Yes with g The measurem...

Page 122: ...easuring 1 Select the measuring method see section 7 4 1 2 Prepare two standard calibration solutions 3 Perform a two point calibration according to the user guidance 4 As soon as a stable value for t...

Page 123: ...me with 82 and Next 7 Thoroughly rinse the electrode with deionized water 8 Immerse the electrode in the sample 9 Start the measurement with Start 10 Add the standard solution to the sample 11 Start t...

Page 124: ...r weight for the ion in the sample with Next and 82 l Select the entry for the ion in the standard solution 2 with Next and 82 l Set the valency and molecular weight for the ion in the standard soluti...

Page 125: ...wo standard calibration solutions 3 Perform a two point calibration according to the user guidance 4 As soon as a stable value for the second standard calibration solution is reached the display indic...

Page 126: ...d Next 7 Thoroughly rinse the electrode with deionized water 8 Immerse the electrode in the standard 9 Start the measurement with Start 10 Add the sample to the standard solution 11 Start the measurem...

Page 127: ...ion of ions It is used for the determination of ions for which no direct determination is possible A sample addition of 1 of the volume of the standard solution prevents the sample matrix having an in...

Page 128: ...play indicator hstops flashing The slope mV of the electrode is displayed after the two point calibration The probe symbol shows the electrode evaluation after the two point calibration 5 Start the me...

Page 129: ...tion 2 with 82 and Next 13 For the entry of a self defining type of ion l Select the entry for the ion in the sample 1 with 82 l Set the valency and molecular weight for the ion in the sample with Nex...

Page 130: ...130 15 Start a new measurement with Next 16 Repeat steps 5 15 for all samples 17 Terminate the measurement with ESC A security prompt appears 18 Select Yes with Next 19 Confirm Yes with g The measurem...

Page 131: ...is equivalent to the standard addition The ion concentration in the sample is calculated from the change in potential 1 Select the measuring method see section 7 4 1 2 Prepare two standard calibration...

Page 132: ...lution ISA Vol volume of the blank value solution Bw Vol and concentration of the blank value solution Bw Conc with 82 and Next 7 Thoroughly rinse the electrode with deionized water 8 Immerse the elec...

Page 133: ...ard solution Std conc and Ion typewith 82 and Next 13 Terminate the measurement with Start 14 Start a new measurement with Next 15 Repeat steps 5 14 for all samples 16 Terminate the measurement with E...

Page 134: ...Ion concentration 134...

Page 135: ...0 to 19 99 mg l dissolved oxygen Standard range for all aqueous test samples l Range from 0 to 90 0 mg l dissolved oxygen This range may be necessary for non aqueous test samples measuring ranges see...

Page 136: ...sea level 6 Confirm the AutoRng menu item with g The i display indicator appears on the display 7 Terminate the Menu mode with m 1 Switch to the Menu mode 2 Use 46 to select the main Meas menu 3 Sele...

Page 137: ...70 0 and to switch on the salinity correction Entering the salinity 7 Press ESC to close the air pressure display and terminate the Menu mode 1 Switch to the Menu mode 2 Use 46 to select the main Cal...

Page 138: ...ay indicator appears on the display when the salinity correction is switched on 1 Switch to the Menu mode 2 Use 46 to select the main Meas menu 3 Select the Include sal menu item with 82 4 Confirm the...

Page 139: ...reset all the settings for D O measurements are reset to the default values Measuring mode D O concentration Relative slope SRel 1 00 Salinity value 0 0 Salinity function off 1 Switch to the Menu mod...

Page 140: ...ion vessel before each series of measurements When to calibrate l At regular intervals 14 days l After connecting another D O probe Calibration procedures The calibration is performed in water vapor s...

Page 141: ...appears on the display Low values indicate that the electrolytic solution will soon be depleted and the probe will have to be regenerated Calibration O2 Cal Date 05 12 1999 Cal Time 22 46 Cal Interva...

Page 142: ...be moist not wet Follow the instructions in the OxiCal SL operating manual 1 Switch to the Menu mode 2 Use 46 to select the main Cal menu 3 Select the Cal Int menu item with 82 4 Confirm the Cal Int...

Page 143: ...ox 102 in the air calibration vessel 3 Put the D O probe into the air calibration vessel 4 Press the c key 5 Press the g key h flashes until a stable value is reached The probe symbol shows the relati...

Page 144: ...Ox G D O probe has a temperature probe and stirrer integrated in it Using the key on the probe switch the stirrer on and off When the stirrer is switched on 3 appears on the display Salinity correctio...

Page 145: ...obe in the test sample The measured variable last selected appears on the display 1 Press the 46 key repeatedly until the oxygen concentration appears on the display in mg l 2 Press the 46 key repeate...

Page 146: ...gen measured variable with m 3 Immerse the D O probe in the test sample 4 Activate the AutoRead function with a The h display indicator appears on the display The measured value is frozen hold functio...

Page 147: ...rminal or measuring module or the key on the StirrOx G probe Reproducibility criteria With identical measurement conditions the following applies Measured parameter Reproducibility Response time D O c...

Page 148: ...Dissolved oxygen D O 148...

Page 149: ...characters for each name and max 7 routines l The simplification of entries by the use of an external IBM PC keyboard see section 4 2 3 l Automation by the use of BOD routines see section 9 4 This ena...

Page 150: ...rrer and start a measurement with AutoRead at the same time This enables the automation of the BOD measurements When the stirrer is switched on 3 appears on the display 9 1 2 Operation with a barcode...

Page 151: ...the barcode the BOD measurement starts automatically 4 Confirm the BOD menu item with g 5 Select the BOD setup menu item with 82 6 Confirm the BOD setup menu item with g 7 Select the Scanner menu ite...

Page 152: ...blank value solutions are entered via the keys on the terminal an external keyboard or via a barcode reader see section 9 1 2 9 2 2 Start measurement Have the following data ready before the measureme...

Page 153: ...urement with routine continue at step 15 7 Select No in the With routine field using 82 The entry field New dilution water appears 8 Swap between the entry fields with Next 9 Select Yes or No in the N...

Page 154: ...field with 82 14 Confirm the settings with Start l If New dilution water No was selected The Start measurement Sample window opens Continue with step 28 l For New dilution water Yes The Start measurem...

Page 155: ...t of the blank value solutions is skipped The blank value solutions last measured are used for the BOD determination l If New dilution water Yes was selected The Number entry field appears 21 Confirm...

Page 156: ...ta Continue with step 23 23 Enter a name with 82 external keyboard or barcode reader 24 Immerse the sensor in the blank value solution 25 Start the measurement with Start 26 Wait for the end of the me...

Page 157: ...he sample dilutions in the Number field with 82 or an external keyboard 32 Confirm the settings with Start The Start measurement Dilution 1 window appears 33 Check the data on the display l If the dat...

Page 158: ...the end of the measurement 42 Repeat from step 33 to step 42 for all sample dilutions Subsequently the Routine STORE window opens 43 Select Save Routine YES or No in the field with 82 If Save Routine...

Page 159: ...wap between the entry fields with Next 46 Enter a name for the routine with 82 or an external keyboard 47 Confirm the entry with Ok The start measurement is completed and the data are stored as a rout...

Page 160: ...by simply pressing Start The settings and values offered correspond to the values that were entered in the start measurement 1 Switch to the Menu mode 2 Use 46 to select the main Meas menu 3 Select t...

Page 161: ...ep 11 l To change the data Continue with step 9 9 Swap between the selection fields with Next 10 Select Yes or No in the KnownDil Water use known dilution water field with 82 l Skip the end measuremen...

Page 162: ...in the Remove field with 82 l If Remove No was selected the default values from the start measurement are adopted l If Remove Yes was selected no end measurement is performed for this blank value sol...

Page 163: ...Yes or No in the Remove field with 82 l If Remove No was selected the end measurement is carried out l If Remove Yes was selected the end measurement is not carried out The value appears on the report...

Page 164: ...he measurement 25 Repeat from step 19 to step 24 for all sample dilutions Subsequently the End status BOD window opens 26 Display and edit the measurement result with Open see section 9 3 1 or Termina...

Page 165: ...calculation Displaying the measurement result 1 Switch to the Menu mode 2 Use 46 to select the main Meas menu 3 Select the BOD menu item with 82 4 Confirm the BOD menu item with g 5 Select the BOD res...

Page 166: ...ne 10 Select a line containing a measured value with 82 a small arrow on the left edge of the display shows the selected line 11 If necessary use g to exclude the measured value of the BOD calculation...

Page 167: ...7 15 mg l Blank value 0 72 mg l ID 2 Start 7 87 mg l End 7 87 mg l Blank value 0 00 mg l Measurement is removed Blank value 0 72 mg l Sample dilution _______________________________________ ID test1 S...

Page 168: ...m with g 7 Select the Sample menu item with 82 8 Confirm the Sample menu item with g The Select sample window opens 9 Select a sample name with 82 The status field shows the status of the sample incub...

Page 169: ...he BOD menu item with g 5 Select the Delete BOD menu item with 82 6 Confirm the Delete BOD menu item with g 7 Select the All samples menu item with 82 8 Confirm the All samples menu item with g The se...

Page 170: ...n be set up in the BOD menu l At the end of a start measurement You can save the current settings as a routine in the Save routine window Have the following data ready before setting up a routine l Nu...

Page 171: ...rocess see section 9 2 2 Note Also an existing routine can be used as a template when defining new routines 1 Switch to the Menu mode 2 Use 46 to select the main Meas menu 3 Select the BOD menu item w...

Page 172: ...o 7 To create space for new routines or to remove routines that are no longer required routines can be deleted It is possible to delete an individual routine or to delete all stored routines Deleting...

Page 173: ...nu 3 Select the BOD menu item with 82 4 Confirm the BOD menu item with g 5 Select the Delete BOD menu item with 82 6 Confirm the Delete BOD menu item with g 7 Select the All routines menu item with 82...

Page 174: ...BOD 174...

Page 175: ...nge manually when the intended measurement is output to a recorder at the same time You can determine the measuring range for measuring the conductivity as follows l Automatic selection of the measuri...

Page 176: ...easuring range 1 Switch to the Display mode 2 Use 46 to select the required range or Sal or TDS 1 Switch to the Menu mode 2 Use 46 to select the main Meas menu 3 Select the Cond setup menu item with 8...

Page 177: ...o the Menu mode 2 Use 46 to select the main Meas menu 3 Select the Cond setup menu item with 82 4 Confirm the Cond setup menu item with g 5 Select the TRef25 or TRef20 menu item with 82 6 Confirm the...

Page 178: ...pecific resistance in M cm 1 Switch to the Menu mode 2 Use 46 to select the main Meas menu 3 Select the Cond setup menu item with 82 4 Confirm the Cond setup menu item with g 5 Select the Cond MOhm me...

Page 179: ...ding to EN 27 888 l Linear temperature compensation lin with the adjustable coefficient of 0 001 to 3 000 K l No temperature compensation off Note Select the following temperature compensations from t...

Page 180: ...to the Menu mode 2 Use 46 to select the main Meas menu 3 Use 82 to select one of the menu items TC nLF or TC lin or TC off 4 Confirm the selected menu item with g The temperature compensation is acti...

Page 181: ...ibrate after performing a reset 1 Switch to the Menu mode 2 Use 46 to select the main Cal menu 3 Select the Reset cond menu item with 82 4 Use g to confirm the Reset cond menu item The default setting...

Page 182: ...conductivity measuring cell by calibrating with the control standard in the following ranges l 0 450 0 500 cm 1 e g TetraCon nominal cell constant 0 475 l 0 800 1 200 cm 1 cells with a cell constant o...

Page 183: ...of the cell constant with c 2 Immerse the measuring cell in the prepared calibration solution 3 Press the g key in order to start the measurement with AutoRead to determine the cell constant The h di...

Page 184: ...11 3 Note You can automatically print a calibration record after the calibration To do so switch on the printer before calibrating print LED lights up green After a valid calibration the record is pri...

Page 185: ...s due 1 Switch to the Menu mode 2 Use 46 to select the main Cal menu 3 Use 82 to select the Cal Int menu item 4 Use g to confirm the Cal Int menu item The input field for the calibration interval appe...

Page 186: ...ies of setting the cell constant l Accepting the cell constant from the last calibration record Cal cell l Selecting any cell constant within the range 0 250 to 2 500 cm 1 Man cell l Selecting the fix...

Page 187: ...e 46 to select the main Cal menu 3 Select the Cell const menu item with 82 4 Confirm the Cell const menu item 5 Select the Cal cell menu item with 82 6 Confirm the Cal cell menu item with g The cell c...

Page 188: ...eld for the cell constant opens The current value is displayed 7 Increase reduce the value with 82 8 Use ESC to leave the input field 9 Confirm the selected cell constant with g The selected cell cons...

Page 189: ...o select the main Cal menu 3 Select the Cell const menu item with 82 4 Confirm the Cell const menu item 5 Use 82 to select the required cell constant LR01 0 1 cm 1 or LR 001 0 01 cm 1 6 Use 82 to sele...

Page 190: ...variables conductivity dry filtrate residue and salinity 1 Connect a conductivity measuring cell with temperature probe to the measuring module The instrument recognizes the measuring cell and automat...

Page 191: ...S TDS 3 Press the 46 key until the measured variable conductivity appears The measured value appears on the display 4 Press the 46 key until the measured variable Sal appears The salinity value appear...

Page 192: ...only change to another measured variable after completion of AutoRead 1 Select the required measuring mode with 46 2 Immerse the conductivity measuring cell in the test sample 3 Activate the AutoRead...

Page 193: ...ble l Storage of measurement data records This memory contains measurement data records for subsequent processing or output see section 11 1 l Storage for system configurations settings This memory en...

Page 194: ...ured temperature value with status information To find data records easily Mem no ID and date time are available as filter criteria The identification ID which you allocate yourself can be especially...

Page 195: ...uired name ID with 82 5 With g confirm the ID In the manual type of storage the measurement data record is stored together with the selected ID 6 Use ESC to leave the Ident input window The Store wind...

Page 196: ...keyboard l Duration Here you set up the measuring period for which the planned AutoStore storing is to be performed l Interval Here you determine the intervals at which the measuring data records will...

Page 197: ...to select the main Mem menu 3 Select the AutoStore menu item with 82 4 Confirm the AutoStore menu item with g 5 Select the Open menu item with 82 6 Confirm the Open menu item with g The free memory l...

Page 198: ...as follows 10 Switch to the next input field with Next Complete the input with 82 11 Use Open to start the automatic storing 9 appears on the display 1 Switch to the Menu mode 2 Use 46 to select the...

Page 199: ...a records graphically 1 Switch to the Menu mode 2 Use 46 to select the main Mem menu 3 Select the AutStoGrph menu item with 82 4 Confirm the AutStoGrph menu item with g 5 Select the Open menu item wit...

Page 200: ...the upper left hand corner of the required sector with g 2 Position the corner with 4682 3 Confirm the upper left hand corner of the required sector and display the lower right hand corner of the req...

Page 201: ...nction The sector before the last zooming is displayed again 1 Switch to the Menu mode 2 Use 46 to select the main Mem menu 3 Select the AutStoGrph menu item with 82 4 Confirm the AutStoGrph menu item...

Page 202: ...Mem No l Identification ID l Date and time of storing 1 Use r to call up the manual measurement data record memory man mem The first data record that meets the selected criterion is displayed 2 Call u...

Page 203: ...off 7 Switch to the next input field with Next Complete all inputs 8 Option Select a digit with 46 9 Increase reduce values or switch a filter on off with 82 10 Close the input window with ESC The fi...

Page 204: ...process with ESC 1 Switch to the Menu mode 2 Use 46 to select the main Mem menu 3 Select the AutoStore menu item with 82 4 Confirm the AutoStore menu item with g 5 Select the Clear menu item with 82...

Page 205: ...delete process with ESC 1 Switch to the Menu mode 2 Use 46 to select the main Mem menu 3 Select the Mem man menu item with 82 4 Confirm the Mem man menu item with g 5 Select the Clear menu item with 8...

Page 206: ...configuration When storing the system configuration you store all the current settings for all probes 1 Switch to the Menu mode with Menu 2 Use 46 to select the main Mem menu 3 Use 82 to select the S...

Page 207: ...mode with Menu 2 Use 46 to select the main Mem menu 3 Use 82 to select the Settings menu item 4 Use g to confirm the Settings menu item 5 Select the Open menu item with 82 6 Confirm the Open menu ite...

Page 208: ...the current settings If Default was selected Use default setting If Setting 1 4 was selected open the stored setting 1 4 A security prompt appears 10 Select yes with Next 11 Confirm the selection wit...

Page 209: ...Menu 2 Use 46 to select the main Mem menu 3 Use 82 to select the Settings menu item 4 Use g to confirm the Settings menu item 5 Select the Clear menu item with 82 6 Confirm the Clear menu item with g...

Page 210: ...ol shows the calibration data for all measured variables as continuous text You can recall the data of the last calibration determination at any time 1 Switch to the Menu mode with Menu 2 Use 46 to se...

Page 211: ...only printing graphical and numerical data printing on the digital recorder l Output to the RS 232 REC interface printing numerical data on an external printer transmitting data to a PC e g to be save...

Page 212: ...the current measured value precondition the AutoRead function is not active by selecting Print in the menu prints e g the system configuration or selected elements of a data memory l Automatically by...

Page 213: ...splay of measured values is the default setting The graphical representation of a selected measured variable is activated via the digital recorder 12 1 1 Numerical display The numerical display of mea...

Page 214: ...er 1 determines the center of the measured value range here 7 000 l Delta 2 determines the extension of the measured value range starting from the center here Center Delta gives a range of pH 0 000 to...

Page 215: ...Dig Rec menu item 5 Select the Open menu item with 82 6 Confirm the Open menu item with g 7 Use 82 to select one of the menu items pH Oxi or Cond 8 Confirm the selected menu item with g The Recorder...

Page 216: ...merical display with Tab 15 Display the left hand measuring range limit with g 16 Change the left hand measuring range limit with 46 17 Determine the left hand measuring range limit and display the ri...

Page 217: ...es 20 Undo the zoom function with g and Tab The sector determined in the Recorder input window appears on the display again 1 Switch to the Menu mode 2 Use 46 to select the main Opt menu 3 Using 82 se...

Page 218: ...d printer the following conditions must be fulfilled l The integrated printer must be switched on and ready for operation print LED lights up green see section 12 2 2 l The data output is set to the i...

Page 219: ...put to the integrated printer Data is either output to the integrated printer or to the RS232 interface You can select where to output the data in the Opt menu 1 Switch on the printer with o The print...

Page 220: ...an also start a printout of the current numerical data record on the measuring module Precondition AutoRead is not active Printing stored data records If there are stored measured values you can displ...

Page 221: ...the integrated printer see section 12 2 1 6 Confirm the Print all menu item with g All data records meeting the selection criteria in the RCL filter input window are printed 1 Switch to the Menu mode...

Page 222: ...igital recorder 1 Switch to the Menu mode 2 Use 46 to select the main Opt menu 3 Using 82 select the Dig Rec menu item 4 Using g confirm the Dig Rec menu item 5 Select the Print menu item with 82 6 Co...

Page 223: ...nt quality prints more slowly 1 Switch to the Menu mode 2 Use 46 to select the main Opt menu 3 Select the RS232 Prt menu item with 82 4 Confirm the RS232 Prt menu item with g 5 Select the Prt font men...

Page 224: ...9PIN 25PIN ext printer cable The data output automatically switches to the RS232 interface Warning If a grounded PC printer is connected you can also measure in grounded media Set up the following tr...

Page 225: ...itch to the Menu mode 2 Use 46 to select the main Opt menu 3 Select the RS232 menu item with 82 4 Confirm the RS232 menu item with g The data is output to the RS232 REC interface 5 Terminate the Menu...

Page 226: ...e RS232 REC interface l Data The data is transmitted with separators The data can easily be saved in a database if it is transmitted to a PC 8 Confirm the selected baud rate with g The selected baud r...

Page 227: ...format with the header Printing the header You can also print the header separately 8 Confirm the selected menu item with g The selected data format is active 9 Terminate the Menu mode with m Data rec...

Page 228: ...labeling of the data in the data format Data is output e g on a printer or the PC 9 Terminate the Menu mode with m 1 Switch to the Menu mode 2 Use 46 to select the main Opt menu 3 Select the RS232 Pr...

Page 229: ...e integrated printer see chapter 12 DATA OUTPUT Note In order to store the data in a file on the PC a terminal program is required that can continuously store the received data 7 Switch the internal p...

Page 230: ...asuring ranges can be found in chapter 15 TECHNICAL DATA section 15 1 TERMINAL l Switch the data output to the RS232 REC interface l Select the measured variable to be recorded in the menu Selecting t...

Page 231: ...the recorder itself 6 Confirm the selected measured variable with g The selected measured variable is active 7 Terminate the Menu mode with m The voltage corresponding to the selected measured variab...

Page 232: ...Data output 232...

Page 233: ...ta except for the date and time are lost Caution Make sure that the poles of the batteries are the right way round The signs on the batteries must correspond to the signs in the battery compartment On...

Page 234: ...rmopaper HQ that can be read for at least 10 years 13 1 3 Maintenance of the probes Note See the relevant operating manuals of the probes for instructions on maintenance 1 Switch the printer off print...

Page 235: ...the instrument against damage during transport Batteries This note refers to the battery regulation that applies in the Federal Republic of Germany We would ask end consumers in other countries to fo...

Page 236: ...Maintenance cleaning disposal 236...

Page 237: ...ously Cause Remedy Calibration interval expired Recalibrate the measuring system Cause Remedy Operating state undefined or electromagnetic interference too high Processor reset Unplug the plug in powe...

Page 238: ...aper available Replace roll of paper AutoStore function is switched on with a long interval time Int 1 Switch off AutoStore The integrated printer is not selected in the Opt menu Select and confirm Pr...

Page 239: ...ove air bubble Air in the diaphragm Extract air or moisten diaphragm Cable broken Replace electrode Gel electrolyte dried out Replace electrode Cause Remedy pH ORP electrode Diaphragm contaminated Cle...

Page 240: ...amp Dry socket Buffer solutions Incorrect buffer solutions Change calibration procedure Buffer solutions too old Use only once Note the shelf life Buffer solutions depleted Change solutions Cause Reme...

Page 241: ...ivity too low Use suitable electrode Temperature too high Use suitable electrode Organic liquids Use suitable electrode Cause Remedy pH electrode unsuitable Use suitable electrode Temperature differen...

Page 242: ...electrode Cable broken Replace electrode Cause Remedy Ion sensitive electrode Slope is not in the range 50 70 mV or 23 35 mV Replace electrode Recalibrate Moisture in the plug Dry plug Electrode obsol...

Page 243: ...have the correct temperature max 2 C temperature difference from calibration temperature Adjust the temperature of the test sample Cause Remedy During calibration Calibration standards are too close t...

Page 244: ...ce probe Depleted Replace probe Short circuit between gold and lead electrode Clean probe and replace it if necessary Cause Remedy Invalid calibration Electrolyte solution depleted Regenerate probe Me...

Page 245: ...the defective stirrer Disconnect then reconnect mains plug Cause Remedy Insufficient flow Provide flow to the probe Cause Remedy High amount of dissolved substances Correct solubility function using t...

Page 246: ...message OFL Error message E3 Cause Remedy Measuring cell not connected Connect measuring cell Cable broken Replace measuring cell The measured value is outside the measuring range Cause Remedy Measuri...

Page 247: ...Electrical safety Applicable guidelines and norms Test certificates Storage 25 C 65 C Operation 0 C 40 C Allowable relative humidity Yearly mean 75 30 days year 95 Other days 85 Type of protection IP...

Page 248: ...printer approx 1 6 without plug in power supply approx 1 3 without plug in power supply Mains Connection max Overvoltage category II Plug in power supply unit FRIWO FW7207 9 15 0661 Friwo Part No 1815...

Page 249: ...uring module interface The power supply of the measuring module is fed via the interface Technical Data see section 15 2 PC keyboard interface Connection via the terminal PS2 adapter Type RS 232 bi di...

Page 250: ...nding display value 0 5 mV Internal resistance 5 current limit of max 0 2 mA output current Measuring range Recorder output voltage pH 2 000 16 000 0 200 1 600V U 999 9 999 9 mV 1 999 1 999V 999 9 999...

Page 251: ...output voltage Cond Conductivity 0 1 999 S cm 0 19 99 S cm 0 199 9 S cm 0 1999 S cm 0 19 99 mS cm 0 199 9 mS cm 0 500 mS cm 0 1 999 V 0 1 999 V 0 1 999 V 0 1 999 V 0 1 999 V 0 1 999 V 0 0 500 V TDS 0...

Page 252: ...h of the measuring modules to which the technical data of a section apply are listed at the start of the section Dimensions and weight Power supply The power is supplied via the serial connection cabl...

Page 253: ...tion Measuring ranges and resolution Input resistance 5 x 1012 Input current Typically 5 x 10 13 A 5 x 10 12 A at 25 C Slope pH 62 50 mV Asymmetry pH 30 30 mV pH Measuring range 1 Resolution 2 000 16...

Page 254: ...AND FIELD INSTRUMENTATION or via the Internet pH Measuring range 1 Measuring range 2 0 005 at 15 C 35 C 0 01 Electromotive force U mV Measuring range 1 Measuring range 2 0 3 at 15 C 35 C 1 Temperature...

Page 255: ...des and other accessories is given in the WTW catalog LABORATORY AND FIELD INSTRUMENTATION or via the Internet Input resistance 5 x 1012 Input current Typically 5 x 10 13 A 5 x 10 12 A at 25 C Slope r...

Page 256: ...ring ranges and resolution Concentration mg l Measuring range 1 Resolution 0 19 99 0 01 Measuring range 2 Resolution 0 90 0 0 1 Saturation Measuring range 1 Resolution 0 199 9 0 1 Measuring range 2 Re...

Page 257: ...measured value at an ambient temperature of 5 C 30 C Temperature compensation 2 at 0 40 C Saturation 0 5 of the measured value when measuring in the range of 10 K around the calibration temperature Ox...

Page 258: ...000 1 999 0 001 at a cell const 0 01 cm 1 Measuring range 2 Resolution 0 00 19 99 0 01 at a cell const 0 01 cm 1 or 0 1 cm 1 Measuring range 3 Resolution 0 0 199 9 0 1 Measuring range 4 Resolution 0 1...

Page 259: ...1999 1 0 0 1 0 Temperature T C Resolution 5 0 100 0 0 1 T F Resolution 23 0 212 0 0 1 Conductivity specific resistance No temperature compensation 0 5 Nonlinear temperature compensation 0 at 0 C 35 C...

Page 260: ...catalog LABORATORY AND FIELD INSTRUMENTATION or via the Internet Total dissolved solids TDS mg l 1 Temperature T C NTC 30 Accuracy 0 1 PT 1000 Accuracy Operating temperature 0 5 0 C 15 C 0 1 15 C 35...

Page 261: ...ns the indicators and the abbreviations that appear on the display and in the manual Specialist terms The glossary briefly explains the meaning of the specialist terms However terms that should alread...

Page 262: ...unit degrees Celsius Cal Calibration Cd Display indicator during calibration for pH measurements Indicates the selection of the buffer data record for buffer solutions prepared according to DIN 19 26...

Page 263: ...Nonlinear temperature compensation OFL Display range exceeded Overflow OxiCal Automatic calibration for D O measurements pH pH value S Slope internat k SAL Salinity SELV Safety Extra Low Voltage SLO S...

Page 264: ...at is regarded as correct or that the difference remains within the tolerance Amperometry Name of a measuring technique The signal depending on the measured parameter of the probe is the electric curr...

Page 265: ...regarded as correct Often this expression is also used when the measuring system is adjusted at the same time see adjusting Cell constant k Characteristic quantity of a conductivity measuring cell de...

Page 266: ...ctrode is the measurable electromotive force of an electrode in a solution It equals the sum of all the galvanic voltages of the electrode Its dependency on the pH results in the electrode function wh...

Page 267: ...n with the pH of the nominal electrode zero point The asymmetry is part of the offset potential ORP voltage The ORP is caused by oxidizing or reducing substances dissolved in water if these substances...

Page 268: ...by a measuring instrument Salinity The absolute salinity SA of seawater corresponds to the relationship of the mass of dissolved salts to the mass of the solution in g Kg In practice this dimension c...

Page 269: ...is adjusted to the temperature of the test sample but the measured value is not converted Temperature function Name of a mathematical function expressing the temperature behavior of a test sample a p...

Page 270: ...Lists 270...

Page 271: ...oint calibration 86 ConCal two point calibration 86 Conductivity calibration evaluation 184 Connect plug in power supply 24 Connect the probe 22 Connect the terminal 23 D D O concentration 145 D O par...

Page 272: ...suring range Cond 175 Measuring ranges 256 Measuring the temperature 57 Memory for measured values 194 Menu 44 N Numerical display 213 O Operating safety 16 ORP 91 ORP electrode 91 Output of measured...

Page 273: ...6 System messages 237 Conductivity 246 ISE 242 Oxygen 244 pH 239 Printer 238 Terminal 237 T Technical Data Dissolved oxygen 256 ISE 255 Technical data 247 Conductivity 258 Measuring module 252 Termina...

Page 274: ...Lists 274...

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