Operating Instructions
Contents
1. Cal settings Design and Function 11 Icon Description 1 _ A Calibration settings 2 Temperature reading 3 FE Endpoint format A A Automatic T Timed Manual 4 S Conductivity reading 5 ISM ISM sensor is detected 6 Power status B fully charged half charged lowly charged fully discharged 7 Measurement mode 8 Hot power on Never shut down automatically until power is used up or press shut down manually 9 Interval reading is on Int 10 Calibration mode a Indicates calibration mode and appears whenever you are performing a cali bration or reviewing calibration data 11 Error occured 12 Setup mode 13 Self Diag Self diagnosis mode Q lg Self diagnosis indicator fa Indication to press key V Self diagnosis passed 14 Ref T Reference temperature 20 20 15 RefT Reference temperature 25 25c 16 Current measurement method 17 i Memory indicator Calibration point Error messages 18 Main setup menu structure 12 Design and Function 3 5 Setup menu 3 5 1 Navigation For general navigation in the setup menu read the following information Press tf to enter the setup menu Press and hold to exit the setup menu Press Read to confirm a change Press and hold Read to exit the setup menu and return directly to the measurement screen from every posi tion in the setup menu 1 Rea2. oa A WN 5 1 3 Enter a user defined standard There are 4 standards to choose from in the Calibration Settings Standard 1 Standard 3 are fixed Stan dard 4 can be altered user defined e Standard 1 84 uS cm fix oe Standard 2 1413 uS cm fix e Standard 3 12 88 mS cm fix Standard 4 0 01 200 00 mS cm user defined To define a user defined standard follow these steps Press fo enter the setup menu Select Calibration Settings press Read and select Standard 4 using and Press to confirm 2 3 4 Change the value by using and 5 Press Read to confirm 6 Press and hold to exit the setup menu Operation of the Instrument 21 5 1 4 Performing a calibration gt A sensor is connected to the instrument 1 Place the sensor in a defined calibration standard and press Cal gt The calibration icon and the measurement icon appear on the display 2 The automatic endpoint A is the default setting of the meter When the signal has stabilized the display freezes automatically A appears and the measurement icon disappears or To manually endpoint a measurement press Read The display freezes and appears gt The relevant value is displayed and stored and the measurement icon disappears from the display 3 Press Read fo accept the calibration and return to sample measurement or press 4 to reject the calibration Note To ensure the most accurate conductivity readings yo
3. Verify that all pins of the sensor cable plugs are straight not bent To exclude a problem with the meter measure the conductivity without connected sensor it must be O uS cm Error 3 Measured temperature during calibration is outside specified range see list of calibration standards in the appendix Keep the calibration standard temperature within the range for calibration To check the temperature reading perform a mea surement in air at room temperature and verify correct reading Error 8 Meter is set to cond ash and measured temperature is outside range 15 25 C Adjust the temperature of the sample Error 9 Measurement data cannot be stored twice Measured value has already been stored Error 10 Memory is full Already 200 results have been saved Delete some results or clear the memory Maintenance 29 6 3 Disposal In conformance with the European Directive 2002 96 EC on Waste Electrical and Electronic Equipment WEEE this device may not be disposed of in domestic waste This also applies 10 countries outside the EU per their specific requirements Please dispose of this product in accordance with local regulations at the collecting point specified for electrical and electronic equipment If you have any questions please contact the responsible authority or the distributor from which you purchased this device Should this device be passed on fo other parties
4. 0 973 0 971 0 969 0 967 0 965 0 963 0 961 27 0 959 0 957 0 955 0 953 0 952 0 950 0 948 0 946 0 944 0 942 28 0 940 0 938 0 936 0 934 0 933 0 931 0 929 0 927 0 925 0 923 29 0 921 0 920 0 918 0 916 0 914 0 912 0 911 0 909 0 907 0 905 30 0 903 0 902 0 900 0 898 0 896 0 895 0 893 0 891 0 889 0 888 31 0 886 0 884 0 883 0 881 0 879 0 877 0 876 0 874 0 872 0 871 32 0 869 0 867 0 866 0 864 0 863 0 861 0 859 0 858 0 856 0 854 33 0 853 0 851 0 850 0 848 0 846 0 845 0 843 0 842 0 840 0 839 34 0 837 0 835 0 834 0 832 0 831 0 829 0 828 0 826 0 825 0 823 35 0 822 0 820 0 819 0 817 0 816 0 814 0 813 0 811 0 810 0 808 Appendix 35 10 3 Temperature coefficients alpha values Substance at 25 C Concentration Temperature coeffi cient alpha C HCl 10 1 56 KCl 10 1 88 CH3COOH 10 1 69 NaCl 10 2 14 H2504 10 1 28 HF 1 5 7 20 coefficients of conductivity standards for a calculation to reference temperature 25 C Standard Measurement Measurement Measurement Measurement temp 15 C temp 20 C temp 30 C temp 35 C 84 15 00 1 95 1 95 1 95 2 01 1413 pS cm 1 94 1 94 1 94 1 99 12 88 mS cm 1 90 1 89 1 91 1 95 10 4 Practical salinity scale UNESCO 1978 The salinity is calculated according to the offic
5. Set up the instrument in a well ventilated location b Any spills should be wiped off immediately c When using chemicals and solvents comply with the instructions of the producer and the general lab safety rules WARNING Flammable solvents All relevant safety measures must be observed when working with flammable solvents and chemicals a Keep all sources of flame away from the workplace b When using chemicals and solvents comply with the instructions of the producer and the general lab safety rules Safety Measures 7 FCC Rules This device complies with Part 15 of the FCC Rules and Radio Interference Requirements of the Canadian Department of Communications Operation is subject to the following conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation 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 These limits are designed to provide reasonable protection against harmful interfer ence when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely 10
6. for private or professional use the content of this regu lation must also be related Thank you for your contribution to environmental protection 30 Maintenance 1 Product Portfolio Meter and Kits Order No Seven2Go Conductivity meter S3 ONLY 30207954 3 Standard Kit 30207955 Seven2Go Conductivity meter S3 Standard Kit with InLab 738 ISM S3 Field Kit 30207956 Seven2Go Conductivity meter S3 Field Kit with InLab 738 ISM and uGo carrying case 3 Bioethanol Kit 30207957 Seven2Go Conductivity meter S3 Bioethanol Kit with InLab 725 and uGo carrying case Product Portfolio 31 8 Accessories Parts Order No uGo carrying case 30122300 Seven2Go meter benchtop stabilizing base 30122303 Seven2Go electrode clip and electrode clip covers 4 pcs 30137805 Seven2Go wrist strap METTLER TOLEDO 30122304 InLab 738 ISM 51344110 4 graphite poles epoxy shaft ATC cell constant 0 57em InLab 742 ISM 51344116 2 steel poles steel V4A shaft ATC cell constant 0 105 cm InLab 725 30014160 2 platinum poles glass shaft ATC cell constant 0 1 cm Mini DIN 10 LTW adapter for InLab 725 51302329 uPlace electrode arm 30019823 Solutions Order No 1 3 uS cm conductivity check solution single use 250 mL 30090847 10 uS em conductivity standard solution 250 mL 51300169 10 15 0 conductivity st
7. 5 6 Instrument self test 28 5 7 Factory reset 28 Table of Contents 3 6 Maintenance 29 6 1 Cleaning the housing 29 6 2 Error messages 29 6 3 Disposal 30 7 Product Portfolio 31 Accessories 32 Technical data 33 10 Appendix 34 10 1 Conductivity standards 34 10 2 Temperature correction factors 35 10 3 Temperature coefficients alpha values 36 10 4 Practical salinity scale UNESCO 1978 36 10 5 Conductivity 10 TDS conversion factors 36 10 6 Conductivity ash methods 37 10 6 1 Refined sugar 28 g 100 g solution ICUMSA GS2 3 17 37 10 6 2 Raw sugar or melasses 5 g 100 mL solution ICUMSA GS 37 4 Table of Contents 1 3 4 1 8 13 1 Introduction Thank you for purchasing this high quality METTLER TOLEDO portable meter Everywhere you measure pH conductivity or dissolved oxygen the Seven2Go portables are designed fo offer you fast quality data one handed operation and an investment that lasts Whether you work in the laboratory at line or outdoors the Seven2Go meters will provide you with high quality measurement everywhere you go The Seven2Go offers many exciting features including Simple and intuitive menus that shorten steps needed for setting up measurements and calibration T pad hard keys for comfortable and fast navigation Rubber side guards for comfortable one handed operation IP67 rating for the entire measurement system including meter sensor and the connection cables Useful ac
8. as the desired appears e Performing a conductivity measurement page 26 e Performing a TDS salinity or resistivity measurement page 26 14 Design and Function 4 Putting into Operation 4 1 Scope of delivery S3 instrument for conductivity measurement Battery LR3 AA 1 5V 4 pcs Electrode holder CD ROM including operating instructions Putting into Operation 15 4 2 Installing the batteries 4 LR3 AA 1 5V or 4X HRG AA 1 2V 16 Putting into Operation 4 3 Connecting sensors ISM sensor When connecting an ISM sensor to the meter one of the following conditions have to be met for the calibra tion data to be transferred automatically from the chip of the sensor into the meter and is used for further mea surements After attaching the ISM sensor e The meter must be switched on e Ifthe meter is already switched on the READ key is pressed e lf the meter is already switched on the CAL key is pressed We strongly recommend you to switch off the meter when disconnecting an ISM sensor In doing so you make sure that the sensor is not removed while the instrument is reading data from or writing data to the ISM chip of the sensor The ISM icon isM appears on the display and the sensor ID of the sensor chip is registered and appears on t
9. cause harmful interference in which case the user will be required to correct the interference at his own expense 8 Safety Measures 3 Design and Function 3 1 Overview 1 Status LED only Pro series 7 Rubber feet 2 Display 8 Fixing points for electrode holder 3 Calibration key 9 Micro USB port only Pro series 4 On Off key 10 Battery compartment 5 Read key 11 Slot for wrist strap 6 T Pad 1 LTW socket for conductivity signal input Design and Function 9 In Standard Screen Key Press and Release Press and hold 1 Read Start and manually stop a measure ment 2 Settings Up s Open setup menu 3 Store Right Save last measurement data 4 Mode Down Switch measurement mode 5 Recall Left 9 Recall measurement data 6 Cal Start calibration Recall last calibration result 7 On Off Switch instrument on hold for 1 sec ond or off hold for 3 seconds In calibration mode indicated by t Key Press and Release Press and hold 1 Read Manually stop calibration Save cali bration result 2 Settings Up 3 Store Right 4 Mode Down 5 Recall Left 9 Fra Discard calibration result 6 06 7 On Off In Setup mode
10. designed for a wide range of applications in various areas and is suitable for measuring pH S2 S8 conductivity S3 S7 or dissolved oxygen 34 S9 The use therefore requires knowledge and experience in working with toxic and caustic sub stances as well as knowledge and experience working with application specific reagents which may be toxic or hazardous The manufacturer shall not be held liable for any damage resulting from incorrect usage divergent to the operating instructions Furthermore the manufacturer s technical specifica tions and limits must be adhered to at all times and in no way exceeded Location The instrument has been developed for indoor and outdoor operation and may not be used in explosive environments Use the instrument in a location which is suitable for the operation protected from direct sun light and corrosive gases Avoid powerful vibrations excessive temperature fluctuations and temperatures below O C and above 40 C 6 Safety Measures Protective Clothing It is advisable to wear protective clothing in the laboratory when working with hazardous or toxic substances O d Safety notes A lab coot should be worn Suitable eye protection such as goggles should be worn Use appropriate gloves when handling chemicals or hazardous substances checking their integrity before use WARNING Chemicals All relevant safety measures are to be observed when working with chemicals a
11. or InLab 742 ISM guaran tees optimum performance even in very humid environments 26 Operation of the Instrument 5 4 Using the memory 5 4 1 Storing a measurement result The Seven2Go can store up 10 200 endpointed results Press when the measurement has endpointed gt M0001 indicates that one result has been stored and M2000 that the maximum of 200 results have been stored Note e If you press when M2000 is displayed FUL indicates that the memory is full To store further data you will have to clear the memory See also e Clearing the memory page 27 5 4 2 Recalling from memory 1 Press fo recall the stored values from memory when the current measurement has endpointed 2 Press or 10 scroll through the stored results gt R0001 to R2000 indicates which result is currently displayed 3 Press Read fo exit 5 4 3 Clearing the memory 1 Press 9 to recall the stored values Press t or 10 scroll through the stored results until ALL appears Press Read gt CLr blinks on the display 4 Press Read fo confirm the deletion or long press 4 to cancel Operation of the Instrument 27 5 5 Hot power on off Generally the instrument shuts down automatically after 10 minutes of not in use This is for saving battery life With hot power on you can deactivate this setting If hot power on is active the instrument will never power off until battery power is used up or the user presses man
12. 141 4 10 455 92 12 18 126 7 1220 11 163 97 8 20 132 2 1273 7 11 644 101 7 25 146 5 1408 3 12 852 111 31 35 176 5 1687 6 15 353 131 1 Japanese Standards Ref 20 C T C 1330 00 uS cm 133 00 pS cm 26 6 pS cm 0 771 40 77 14 15 428 5 911 05 91 11 18 221 10 1050 70 105 07 21 014 15 1190 35 119 04 23 807 20 1330 00 133 00 26 6 25 1469 65 146 97 29 393 30 1609 30 160 93 32 186 35 1748 95 174 90 34 979 Saturated NaCl Ref 25 C T C 251 3 mS cm 5 155 5 10 177 9 15 201 5 20 226 0 25 251 3 30 277 4 35 304 1 34 Appendix 10 2 Temperature correction factors Temperature correction factors for non linear conductivity correction c 0 1 2 3 4 5 6 7 8 9 0 1 918 1 912 1 906 1899 1 893 1 887 1 881 1 875 1 869 1 863 1 1 857 1 851 1 845 1840 1 834 1 829 1 822 1 817 1 811 1 805 2 1 800 1 794 1 788 1 783 1 777 1 772 1 766 1 761 1 756 1 750 3 1 745 1 740 1 734 1 729 1 724 1 719 1 713 1 708 1 703 1 698 4 1 693 1 688 1 683 1678 1 673 1 668 1 663 1 658 1 653 1 648 5 1 643 1 638 1 634 1629 1 624 1 619 1 615 1 610 1 605 1 601 6 1 596 1 591 1 587 1 582 1 578 1 573 1 569 1 564 1 560 1 555 7 1 551 1 547 1 542 1 538 1 534 1 529 1 525 1 521 1 516 1 51
13. 2 8 1 508 1 504 1 500 1496 1 491 1 487 1 483 1 479 1 475 1 471 9 1 467 1 463 1 459 1 455 1 451 1 447 1 443 1 439 1 436 1 482 10 1 428 1 424 1 420 1416 1 413 1 409 1 405 1 401 1 398 1 384 11 1 390 1 387 1 383 1 379 1 376 1 372 1 369 1 365 1 362 1 358 12 1 354 1 351 1 347 1 344 1 341 1 337 1 334 1 330 1 327 1 323 13 1 320 1 317 1 313 1 310 1 307 1 303 1 300 1 297 1 294 1 290 14 1 287 1 284 1 281 1 278 1 274 1 271 1 268 1 265 1 262 1 259 15 1 256 1 253 1 249 1 246 1 243 1 240 1 237 1 234 1 231 1 228 16 1 225 1 222 1 219 1 216 1 214 1 211 1 208 1 205 1 202 1 199 17 1 196 1 193 1 191 1 188 1 185 1 182 1 179 1 177 1 174 1 171 18 1 168 1 166 1 163 1 160 1 157 1 155 1 152 1 149 1 147 1 144 19 1 141 1 139 1 136 1 134 1 131 1 128 1 126 1 123 1 121 1 118 20 1 116 1 113 1 111 1 108 1 105 1 103 1 101 1 098 1 096 1 093 21 1 091 1 088 1 086 1 083 1 081 1 079 1 076 1 074 1 071 1 069 22 1 067 1 064 1 062 1 060 1 057 1 055 1 053 1 051 1 048 1 046 23 1 044 1 041 1 039 1 037 1 035 1 032 1 030 1 028 1 026 1 024 24 1 021 1 019 1 017 1 015 1 013 1 011 1 008 1 006 1 004 1 002 25 1 000 0 998 0 996 0 994 0 992 0 990 0 987 0 985 0 983 0 981 26 0 979 0 977 0 975
14. S3 Seven2Go Conductivity Meter SUOIJONISU 88290 Table of Contents 1 Introduction 5 2 Safety Measures 6 2 1 Definition of signal warnings and symbols 6 2 2 Product specific safety notes 6 3 Design and Function 9 3 1 Overview 9 3 2 Sensor connections 9 3 3 T Pad and hard keys 9 3 4 Display and icons 1 3 5 Setup menu 13 3 5 1 Navigation 13 3 5 2 Menu structure 14 3 6 Measurable parameters 14 4 Putting into Operation 15 4 1 Scope of delivery 15 4 2 Installing the batteries 16 4 3 Connecting sensors 17 44 Installing optional equipment 18 4 4 1 Electrode holder 18 4 4 2 Meter base stabilizing unit 18 4 4 3 Wrist strap 19 4 5 Switching the instrument on and off 20 5 Operation of the Instrument 21 5 1 Calibration 21 5 1 1 Selecting a calibration standard 21 5 1 2 Enter a cell constant 21 5 1 3 Enter a user defined standard 21 5 1 4 Performing a calibration 22 5 2 Settings 22 5 2 1 General settings 22 5 2 1 1 Endpoint Formats 22 5 2 2 Measurement Settings 23 5 2 2 1 Timed Interval Reading 23 5 2 2 2 Reference temperature 23 5 2 2 3 Temperature correction alpha coefficient 24 5 2 2 4 TDS factor 25 5 2 2 5 Conductivity Ash 25 5 3 Sample measurement 26 5 3 1 Performing a conductivity measurement 26 5 3 2 Performing a TDS salinity or resistivity measurement 26 5 4 Using the memory 27 5 4 1 Storing a measurement result 27 5 4 2 Recalling from memory 27 5 4 3 Clearing the memory 27 5 5 Hot power on off 28
15. andard 30 x 20 mL 30111141 84 uS cm conductivity standard solution 250 mL 51302153 84 uS cm conductivity standard 30 x 20 mL 30111140 500 uS cm conductivity standard solution 250 mL 51300170 1413 uS cm conductivity standard solution 30 x 20 mL 51302049 1413 uS cm conductivity standard solution 6 x 250 mL 51350096 12 88 mS cm conductivity standard solution 30 x 20 mL 51302050 12 88 mS cm conductivity standard solution 6 x 250 mL 51350098 Documents Order No A Guide to Conductivity Measurement 3009912 32 Accessories 9 Technical data General Power requirements Batteries 4 x LRG AA 1 5 V Alkaline or 4 x HRG AA 1 3 V NiMH recharge able Battery life 250 400 h Dimensions Height 222 mm Width 70mm Depth 35 mm Weight 270g Display LCD Segmented LCD b w Ambient conditions Operating temperature 0 40 C Relative humidity 5 85 non condensing at 31 C linearly descending to 50 at 40 C Overvoltage category Class II Pollution degree 2 Maximum operating altitude Up to 2000 m Range of application For indoor and outdoor use Materials Housing ABS PC reinforced Window Polymethyl methacrylate PMMA IP Protection class IP67 Measurement Parameters Conductivity TDS salinity specific resistance conductivity ash Sensor input Conductivity Standard LTW 7 pin IP67 Conductivity Measuring range 0 01 uS cm 500 mS
16. cessories such as the electrode clip the meter base stabilizing unit the wrist strap and the uGo carrying case with hermetically sealed interior for easy cleaning Introduction 5 2 Safety Measures 2 1 Definition of signal warnings and symbols Safety notes are marked with signal words and warning symbols These show safety issues and warnings Ignoring the safety notes may lead to personal injury damage 10 the instrument malfunctions and false results Signal words WARNING for a hazardous situation with medium risk possibly resulting in severe injuries or death if not avoided CAUTION for a hazardous situation with low risk resulting in damage 10 the device or the property or in loss of data or minor or medium injuries if not avoided Attention no symbol for important information about the product Note no symbol for useful information about the product Warning symbols General hazard Toxic substance A Inflammable or explosive substance 2 2 Product specific safety notes Your instrument represents state of the art technology and complies with all recognized safety rules however certain hazards may arise in extraneous circumstances Do not open the housing of the instrument it does not contain any parts that can be maintained repaired or replaced by the user If you ever have problems with your instrument contact your authorized METTLER TOLEDO dealer or service representative Intended use This instrument is
17. cm Resolution 0 01 1 auto range Accuracy sensor input 0 5 TDS Measuring range 0 01 mg L 300 g L Resolution 0 01 1 Accuracy sensor input 0 5 Specific Resistance Measuring range 0 00 100 0 MO cm Resolution 0 01 0 1 Accuracy sensor input 0 5 Salinity Measuring range 0 00 42 psu Resolution 0 01 0 1 Accuracy sensor input 0 5 Conductivity Ash Measuring range 0 00 2022 Resolution 0 01 0 1 1 auto range Accuracy sensor input 0 5 Temperature Measuring range 6 105 C Resolution 0 1 C Accuracy sensor input 0 2 C ATC Yes Reference temperature 20 25 C Temperature correction mode Linear Calibration Calibration points Predefined conductivity standards 3 Data security storage ISM light version Yes Memory size 200 Technical data 33 10 Appendix 10 1 Conductivity standards International Ref 25 C T C 10 15 01 84 uS cm 500 pS em 1413 pS em 12 88 mS cm 5 6 13 53 02 315 3 896 8 22 10 7 10 60 34 359 6 1020 9 33 15 7 95 67 61 402 9 1147 10 48 20 8 97 75 80 451 5 1278 11 67 25 10 00 84 00 500 0 1413 12 88 30 11 03 92 19 548 5 1552 14 12 35 12 14 100 92 602 5 1667 15 39 Chinese Standards Ref 25 C T C 146 5 pS em 1408 pS cm 12 85 mS cm 111 3 mS cm 15 118 5 1
18. d e Read save cal data e Confirm entered values 2 Setup Up e Enter the setup menu e Move up in the menu structure e Edit value increase 3 Save Right e Save measurement data 4 e Store last calibration point to end calibration e Go right 4 Mode Down e Change measurement mode e Move down in the menu structure e Edit value decrease 5 Recall Left Recall data recall the last step e Go left e For menu or data memory exit press gt 1 s Design and Function 13 3 5 2 Menu structure 1 General Settings l Endpoint Formats 1 1 Automatic 1 2 Timed 1 2 1 Measurement Time 1 3 Manual 2 Measurement Settings 1 Reference Temperature 2 Enter Alpha coefficient 3 Enter TDS Factor 4 Measurement Time 5 Conductivity Ash 3 Calibration Settings 1 Buffer Group Standard 1 1 Standard 1 1 2 Standard 2 1 3 Standard 3 1 4 Standard 4 3 6 Measurable parameters With the S3 conductivity meter it is possible to measure the following parameters of a sample e Conductivity uS cm and mS cm The instrument will switch automatically to uS m and mS m depending on the measurement value e g conductivity of ethanol according fo the ABNT ABR 10547 method e TDS mg L e Salinity psu e Resistivity MO cm e Conductivity ash To change the measurement mode press See also as offen
19. d sugar ICUMSA GS2 3 17 e 5g 100 mL solution raw sugar ICUMSA GS1 3 4 7 8 13 The instrument will directly convert the measured conductivity to conductivity ash according to the selected method The user has the possibility to enter the conductivity of the used water for preparing the sugar solutions in uS cm 0 0 to 100 0 uS cm This value is then used for correcting the measured conductivity ash values according 10 the formula given in the Appendix Note Conductivity ash measurements are only possible in the temperature range from 15 C fo 25 C To edit the conductivity ash of used water follow these steps Press tf to enter the setup menu Select Measurement Settings and press Read five times Select the conductivity ash by using or Press Read 10 confirm oF WN Press and hold to exit the setup menu Operation of the Instrument 25 5 3 Sample measurement Note amp Stability criterion for conductivity measurement The sensor input signal must not deviate by more than 0 4 from the measured average conductivity of the sample in 6 seconds 5 3 1 Performing a conductivity measurement gt gt 3 A sensor is connected to the instrument The measurement parameters are fully set Place the sensor in the sample and press Read fo start the measurement gt The measurement icon appears on the display and the decimal point blinks gt The display shows the value of the samp
20. he display The calibration history the initial certificate and the maximum temperature can be reviewed and printed in the data memory Putting into Operation 17 4 4 Installing optional equipment 4 4 1 Electrode holder For a safe placing of the electrode you can mount an electrode holder on the side of the instrument The elctrode holder is part of delivery You can mount it on either sides of the instrument for your personal handling 1 Remove the protective clips 1 2 Push the electrode holder 1 into the recess 2 of the instrument 4 4 2 Meter base stabilizing unit The meter base stabilizing unit should be mounted when using the instrument on a desk It ensures a more firm and secure stand when pressing the keys 1 Remove the protective clips 1 2 Push the meter base stabilizing unit 1 into the recess es 2 of the instrument 18 Putting into Operation 4 4 3 Wrist strap For better protection against damage caused by dropping you can mount the wrist strap as shown in the fol lowing diagrams o aR TOES METTLER TOLEDO or E09 ee METTLER TOLEDO Putting into Operation 19 4 5 Switching the instrument on and off 1 Press and release to switch on the instrument gt All segmented digital numbers and icons are dis played for 2
21. ial definition of UNESCO 1978 Therefore the salinity Spsu of a sample in psu practical salinity unif at standard atmospheric pressure is calculated as follows a 2 1 15 amp n2 S aR bR 2 PT 1 k T 15 2 ict dp 0 0080 00 0 0005 k 0 00162 a 0 1692 b 0 0056 02 25 3851 bz 0 0066 a3 14 0941 bz 0 0375 04 7 0261 b 0 0636 ds 2 7081 bs 0 0144 R Reomp D Ra 32 4356 g KCI per 1000 g of solution 10 5 Conductivity to TDS conversion factors Conductivity TDS KCI TDS NaCl at 25 C ppm value factor ppm value factor 84 19 00 40 38 0 5048 38 04 0 4755 447 5 00 225 6 0 5047 215 5 0 4822 1413 uS cm 744 1 0 527 702 1 0 4969 1500 uS cm 757 1 0 5047 737 1 0 4914 8974 uS cm 5101 0 5685 4487 0 5000 12 880 uS cm 7447 0 5782 7230 0 5613 15 000 uS cm 8759 0 5839 8532 0 5688 80 mS cm 52 168 0 6521 48 384 0 6048 36 Appendix 10 6 Conductivity ash methods The meter can measure the conductivity ash 99 according to the two ICUMSA methods 10 6 1 Refined sugar 28 g 100 g solution ICUMSA GS2 3 17 The formula that the instrument uses is 9 m m 0 0006x C1 1 0 026x T 20 0 35x C2 1 0 026x T 20 xK C1 conductivity of the sugar solution in uS cm with cell constant 1 cm C2 conductivity of the water used in uS cm to prepare the sugar solution with cell constant 1 cm T temperature in C bet
22. indicated by Key Press and Release Press and hold 1 Read Select submenu Confirm setting Leave setup mode 2 Settings Up amp Edit value increase Fast value increase 3 Store Right Switch between changeable values 4 Mode Down Edit value decrease Fast value decrease 5 Recall Left 9 Switch between changeable values 0 6 level up back fo setup menu or leave setup mode 6 Cal 7 On Off lt In Recall mode indicated by Key Press and Release Press and hold 1 Read Clear memory and confirm deletion 2 Settings Up Navigate up a 3 Store Right 8 sas Cancel data deletion 4 Mode Down Navigate down 5 Recall Left 9 Leave recall mode 6 Cal 7 On Off 10 Design and Function 3 4 Display and icons When turning on the instrument the startup screen appears for 3 seconds The startup screen shows all icons which can appear on the display In the following table you find a short description about these icons Note Some icons are shown specific to the other Seven2Go routine level instruments S2 pH mV and S4 DO These icons are not relevant 10 the operation of S3 and are not further explained below Startup screen TDS Salinity Resistivity Cond ash 5 SM o coeff Cond of used water 1 Z Lal DHRel mV C AIM mS cmg L psu 3 k MO cm CalErr Fe Py TI 2 Lo r a
23. ion factor alpha coefficient 10 define this dependency You can define a temperature correction coefficient between 0 000 10 000 C The measured conductivity is corrected and displayed using the following formula GTre 1 0 6 Tre 100 Formula definitions e GT conductivity measured at temperature T mS cm GT pep conductivity mS cm displayed by the instrument calculated back to the reference temperature Tref e linear temperature correction coefficient C O no temperature correction e T measured temperature C Reference temperature 20 C or 25 C No temperature correction In some cases for example when measuring according 10 USP EP United States European Pharmacopeia you need to switch off the temperature correction This can be done by entering a linear correction factor of 0 C Each sample has different temperature behavior For pure salt solutions the correct coefficient can be found in literature otherwise you need to determine the ot coefficient by measuring the conductivity of the sample at two temperatures and calculate the coefficient by using the formula below GTI GT2 100 11 12 GT2 T1 Typical sample temperature T2 Reference temperature GT1 Measured conductivity at typical sample temperature GT2 Measured conductivity at reference temperature Non linear The conductivity of natural water shows strong non linear temperature beha
24. le The automatic endpoint A is the default setting of the meter When the signal has stabilized the display freezes automatically A appears and the measurement icon disappears or To manually endpoint a measurement press Read The display freezes and appears gt The measured value is displayed Press amp to store the measured value Note Press Read to switch between the automatic and manual endpoint modes 5 3 2 Performing a TDS salinity or resistivity measurement gt gt 4 A sensor is connected to the instrument The measurement parameters are fully set Press Mode to switch between the measurement modes and select the desired Press Read to confirm Place the sensor in the sample and press Read 10 start the measurement gt The measurement icon appears on the display and the decimal point blinks gt The display shows the value of the sample The automatic endpoint A is the default setting of the meter When the signal has stabilized the display freezes automatically A appears and the measurement icon disappears or To manually endpoint a measurement press Read The display freezes and M appears gt The measured value is displayed Press to store the measured value Note For accurate measurement with the S3 conductivity meter it is important to use a sensor with a built in tem perature sensor The use of the special IP67 conductivity and temperature sensor InLab 738 ISM
25. ngs mode the interval can be defined by entering the seconds The measure ment series stops according to the selected endpoint format Automatic Manual or Timed When Timed Interval Readings is On appears on the screen Press fo enter the setup menu Select Measurement Settings and press Read Choose interval time by using or Press Read 10 confirm o A U N Press and hold to exit the setup menu Reference temperature The reference temperature can be set in the Measurement settings Two reference temperatures are available e 20 C 68 F e 25 C 77 F To change the reference temperature follow these steps Press tf to enter the setup menu Select Measurement Settings and press Read twice Select the reference temperature by using or Press Read to confirm oF U N Press and hold 10 exit the setup menu Operation of the Instrument 23 5 2 2 3 Temperature correction alpha coefficient If needed you can define the alpha coefficient In the measurement settings as follows 1 Press to enter the setup menu 2 Select Measurement Settings and press Read three times 3 Edit the alpha coefficient value by using or 4 Press Read to confirm 5 Press and hold to exit the setup menu With most solutions a linear interrelationship between conductivity and temperature is given In such cases select the linear temperature correction method Enter a linear temperature correct
26. o switch on the instrument 28 Operation of the Instrument 6 Maintenance 6 1 Cleaning the housing Q Note Damage to the instrument Wipe off any spills immediately Ensure that no liquid enters the interior of the instrument The meters do not require any maintenance other than an occasional wipe with a damp cloth The housing is made of acrylonitrile butadiene styrene polycarbonate ABS PC This material is sensitive to some organic sol vents such as foluene xylene and methyl ethyl ketone MEK Clean the housing of the instrument using a cloth dampened with water and a mild detergent 6 2 Error messages Error 0 Error to access memory Switch Seven2Go off and on again If this error persists call METTLER TOLEDO Ser vice Error 1 Self diagnosis failed Not all key presses recognized within 2 minutes Repeat the self diagnosis procedure and make sure that you finish pressing all seven keys within two minutes If the error appears again call METTLER TOLEDO Service Error 2 Conductivity resistivity TDS salinity or cond ash reading is outside specified range see technical data in chapter 9 Make sure the electrode placed in the sample solution Check the calibration data If needed re calibrate the sensor Make sure that the sensor is not damaged Check if the sensor is properly connected Neither the electrode plug nor the instrument s connector must be oxidized
27. seconds After that the installed soft ware version appears e g 1 00 and the instru ment is ready for use 2 Press for 2 seconds and release to switch off the instrument Note e By default after 10 minutes not in use the instrument shuts down automatically The auto off function can be turned on off in the setup menu under General settings See also Hot power on off page 28 20 Putting into Operation 5 Operation of the Instrument 5 1 Calibration Note To determine the cell constant of a conductivity sensor perform a calibration as described below 5 1 1 Selecting a calibration standard 1 Press to enter the setup menu 2 Select Calibration Settings and press Read 3 Select your standard by using and l and press Read to confirm By default the following 3 standards are available e 84 uS cm 1413 15 00 e 12 88 mS cm Tables for automatic temperature compensation are programmed in the meter for each standard See also e Appendix page 34 5 1 2 Enter a cell constant If the cell constant of the conductivity cell being used is accurately known it can be entered directly in the meter 0 01 500 0 uS cm 1 Press ts to enter the setup menu Select Calibration Settings and press Read Select Standard 0 by using and and press fo confirm Increase or decrease the cell constant value by using and Sl and press Read to confirm Press and hold to exit the setup menu
28. u should verify your cell constant with a standard solution regularly and recalibrate if necessary Use always fresh standards 5 2 Settings 5 2 1 General settings Stability criteria for conductivity measurement The sensor input signal must not deviate by more than 0 4 from the measured average conductivity of the sample in 6 seconds There is no user defined configuration needed 5 2 1 1 Endpoint Formats The Seven2Go offers three different endpoint formats Automatic endpoint With the automatic endpoint the selected stability criterion fast normal determines the end of an individual reading depending on the behavior of the sensor used This ensures an easy quick and precise measurement Timed endpoint The measurement stops after a user defined period of time 5 s 3600 9 Manual endpoint Unlike Auto user interaction is required to stop the measurement reading in manual mode The three different endpoint formats can be selected in the General settings Press t to enter the setup menu Select General Settings and press Read twice Choose the endpoint format by using t or Press Read 10 confirm oF U N Press and hold 10 exit the setup menu 22 Operation of the Instrument 5 2 2 Measurement Settings 5 2 2 1 5 2 2 2 Timed Interval Reading A reading is taken every time after a certain interval 1 200 s defined in the menu has elapsed When work ing in the Timed Interval Readi
29. ually Activate hot power on Press and Read simultaneously gt Hot power on is activated appears on the display Deactivate hot power on Press and Read simultaneously gt Hot power on is deactivated disappears from the display Note On delivery and after doing a factory reset the hot power on function is OFF 5 6 Instrument self test 1 Press Read and Cal simultaneously until 82 appears gt First that each icon blinks one after the other whereby you can check if all icons are correctly shown on the display After that the full screen will be displayed gt After that starts to blink and the 7 hardkey icons are shown on the display 2 Press any hardkey gt The specific icon disappears from the display Press each hardkey one time gt When the self diagnosis is completed successfully PAS and appears If the self diagnosis is failed Err 1 appears Note e You must press all hardkeys within 2 minutes Otherwise Err 1 appears and the self diagnosis has to be redone See also e Error messages page 29 5 7 Factory reset Note 4 D Loss of data ho A With a factory reset all user specific settings will be set to standard Also all data memories e g sample IDs User IDs will be deleted gt The instrument is switched on 1 Press Read and simultaneously gt RST appears on the display 2 Press gt The instrument switches off gt All settings are reset 3 Press t
30. vior For this reason use the non linear correction for natural water The measured non temperature corrected conductivity is multiplied by the factor fos for the measured temperature see value table in Appendix and thus corrected to the reference tem perature of 25 C Gros GT fo5 The conductivity corrected to 25 C is divided by 1 116 see fz25 for 20 0 C GTo9 GT fo5 1 116 Note Conductivity measurements of natural water can only be performed at temperatures ranging from O C to 36 C Otherwise the warning message Temp out of nLF correction range appears 24 Operation of the Instrument 5 2 2 4 5 2 2 5 TDS factor TDS Total dissolved solids is calculated by multiplying the conductivity value with the TDS factor A factor between 0 40 and 1 00 can be entered To edit the TDS factor follow these steps 1 Press s to enter the setup menu Select Measurement Settings and press Read four times Edit the TDS value by using or 8 Press Read to confirm oa A WN Press and hold to exit the setup menu Conductivity Ash Conductivity Ash is an important parameter that reflects the content of soluble inorganic salts in refined sugar or raw sugar melasses The value expresses the amount of such impurities in the analyzed sugar sam ple This meter can measure conductivity ash according to the following two ICUMSA methods see Appendix Conductivity ash methods e 28 g 100 g solution refine
31. ween 15 C and 25 C K cell constant 10 6 2 Raw sugar or melasses 5 g 100 mL solution ICUMSA GS 1 3 4 7 8 13 The formula that the instrument uses is 9 m V 0 0018x C1 1 0 023 T 20 C2 1 0 023 T 20 xK C1 conductivity of the sugar solution in uS cm with cell constant 1 cm C2 conductivity of the water used to prepare the sugar solution in uS cm with cell constant 1 cm T temperature in C between 15 C and 25 C K cell constant of the used sensor Appendix 37 To protect your product s future METTLER TOLEDO Service assures the quality measuring accuracy and preser vation of value of this product for years 10 come Please request full details about our attractive terms of service www mt com ph For more information Mettler Toledo AG Analytical CH 8603 Schwerzenbach Switzerland Tel 41 0 44 806 77 11 Fax 41 0 44 806 73 50 Subject 10 technical changes lll li lll ll ll Mettler Toledo AG 08 2014 3 0 2 1 9 78 5 30219785A
Download Pdf Manuals
Related Search