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14

APPENDIX A: CONDUCTIVITY TO TDS CONVERSION FACTORS

Conductivity

at 25 °C

            

TDS KCL

        

  TDS (NaCL)

         

  

 TDS (442) 

 

 ppm

Factor

 ppm

Factor

 ppm

Factor

23μS

11.6

0.5043

10.7

0.4652

14.74

0.6409

84μS

40.38

0.4807

38.04

0.4529

50.5

0.6012

447μS

225.6

0.5047

215.5

0.4822

300

0.6712

1413μS

744.7

0.527

702.1

0.4969

1000

0.7078

1500μS

757.1

0.5047

737.1

0.4914

1050

0.7

2070μS

1045

0.5048

1041

0.5029

1500

0.7246

2764μS

1382

0.5

1414.8

0.5119

2062.7

0.7463

8974μS

5101

0.5685

4487

0.5

7608

0.8478

12,880μS

7447

0.5782

7230

0.5613

11,367

0.8825

15,000μS

8759

0.5839

8532

0.5688

13,455

0.897

80mS

52,168

0.6521

48,384

0.6048

79,688

0.9961

 

442: 40% sodium sulfate, 40% sodium bicarbonate and 20% sodium chloride.

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Содержание WT-60

Страница 1: ...e d emploi Bedienungshandbuch Manual d Uso Manual de uso WT 60 Conductivity TDS Water Quality Meter info GlobalScientificSupply com www GlobalScientificSupply com GLOBAL SCIENTIFIC SUPPLY The Laboratory Supply Company ...

Страница 2: ...ality Meter Users Manual September 2009 Rev 1 2009 Amprobe Test Tools All rights reserved Printed in China English info GlobalScientificSupply com www GlobalScientificSupply com GLOBAL SCIENTIFIC SUPPLY The Laboratory Supply Company ...

Страница 3: ...hould be accompanied by the following your name company s name address telephone number and proof of purchase Additionally please include a brief description of the problem or the service requested and include the test leads with the meter Non warranty repair or replacement charges should be remitted in the form of a check a money order credit card with expiration date or a purchase order made pay...

Страница 4: ...ocket LCD display Adaptor port USB port Operation keys 6 7 8 9 5 Probe Temperature sensor Battery cover rear side Tripod mount hole rear side info GlobalScientificSupply com www GlobalScientificSupply com GLOBAL SCIENTIFIC SUPPLY The Laboratory Supply Company ...

Страница 5: ...mode While in calibration or setting mode press to return to previous mode HOLD KEY Press key to freeze current reading Press again to unlock When the meter is off press SET HOLD simultaneously 1 second to disable auto sleep mode MODE KEY Press this key to switch Cond TDS Press 2 seconds to manually set range In setting or calibration mode press to increase value DOWN KEY Press to record current r...

Страница 6: ...et Up 5 Calibration Mode 8 Conductivity calibration 8 TDS calibration 9 SPECIFICATION 10 MAINTENANCE AND REPAIR 11 Battery Replacement 11 USB PC INTERFACE CAPABILITIES 12 TROUBLESHOOTING 12 APPENDIX A 14 APPENDIX B 15 APPENDIX C 15 info GlobalScientificSupply com www GlobalScientificSupply com GLOBAL SCIENTIFIC SUPPLY The Laboratory Supply Company ...

Страница 7: ...ries 1 User s Manual If any of the items are damaged or missing return the complete packag to the place of purchase for an exchange INTRODUCTION Congratulations on your purchase of WT 60 Conductivity TDS water quality meter Conductivity measurements are used extensively in many industries For example conductivity measurements are used to monitor quality in public water supplies in hospitals in boi...

Страница 8: ... 5 ranges for selection and rAn auto ranging It cycles from 1 to 5 and get back to auto Fig 1 2 Automatic Temperature Compensation The meter is defaulted as ATC on To disable ATC refer to programming setting P1 3 and P3 3 for manual temp compensation 3 ASetting correct temperature coefficient Factory default is 2 1 per C temperature coefficient and this provides good results for most applications ...

Страница 9: ...ble READY will display on the left middle LCD TDS Measurement 1 Set a correct TDS conversion factor Factory default is 0 50 Refer P1 1 if a different value is needed See Appendix A B for more information 2 Select range ATC manual TC per your application 3 Take readings Press MODE to switch to TDS mode and get the reading Auto power off This meter will shut off automatically 20 minutes of inactivit...

Страница 10: ...0 Reset to factory default setting rSt P1 0 Meter configuration CoF P1 1 TDS factor tdS The dissolved salts increases conductivity but the effect varies from sal to salt and is roughly linear in a given range for a given salt The TDS conversion factor is used to convert conductivity into TDS In P1 0 press ENTER to enter P1 1 Press again to see TDS factor flashes on LCD Fig 3 Press UP DOWN to chang...

Страница 11: ... TDS unit ppm blinks on LCD Press UP DOWN to switch between ppm and mg l Press ENTER to confirm and return to P2 0 P3 0 temperature parameters t P3 1 Temperature coefficient tCo The temp coefficient expressed in percent per C is the changed ratio of conductivity per degree of temp The adjustable range is 0 0 per C to 10 00 per C The default is 2 10 per C 0 0 has no effect on temp So the displayed ...

Страница 12: ...brate It s for Review purpose only In P4 0 press ENTER repeatedly to view P4 1to P4 5 and it returns P4 0 after 4 5 P4 1 is calibration data for range 1 P4 2 is for range 2 P4 5 is for range 5 If no previous calibration data at particular range the display will show P5 0 Electrode data ELE To check the probe cell constant value for diagnostic purposes The cell constant is adjusted according to you...

Страница 13: ...rift If measure the extreme temperatures or special concentration 100uS or 2mS calibrate the meter at least once a week to get specified accuracy Conductivity calibration 1 Dip the probe into demineralized or distilled water for about 30 minutes to rinse the probe 2 Select the conductivity standard for calibration 3 Pour enough solution into two separate clean containers 4 Power on the meter Selec...

Страница 14: ...ing TDS standards 1 Dip the probe into demineralized or distilled water for about 30 minutes to rinse the probe 2 Select the TDS standard for calibration The factory default setting of the TDS conversion factor is 0 50 You can improve the calibration accuracy by setting the TDS factor before starting the calibration Please refer Appendix A for more information of TDS conversion factor 3 Pour enoug...

Страница 15: ...e 0 93 C 32 199 F Temperature Res 0 1 C F Temperature Accuracy 0 6 C 50 C 1 C 50 C Temp Coefficient 0 0 10 0 per degree C Normalization Tempe 15 0 30 0 C Cell Constant 1 0 Operation temp 0 50 C 32 122 F Power Requirements 4pcs1 5V Type AAA EMC Conforms to EN61326 1 This product complies with requirements of the following European Community Directives 89 336 EEC Electromagnetic Compatibility and 73...

Страница 16: ...ution of detergent and water Apply sparingly with a soft cloth and allow to dry completely before using Do not use aromatic hydrocarbons Gasoline or chlorinated solvents for cleaning Make sure the electrode is clean Between measurements rinse the electrode with deionised water If the electrode has been exposed to a solvent immiscible with water clean it with a solvent miscible with water e g ethan...

Страница 17: ...te and then re install Display disappear Check whether the low battery icon is appeared before the display is off If yes replace with new batteries Air bubbles adhere on electrode Stir the electrode completely and better to dip the electrode into solution at oblique angle After soaking the electrode for 15 30 minutes inspect the electrode carefully to make sure no bubbles adhere If air bubbles sti...

Страница 18: ...rror send back for repair E41 Caused by meter configuration error Re program the meter with correct setting Parameter TDS E04 Caused by temp or conductivity error Refer to error code of temp conductivity After solving the error of temp conductivity E04 will disappear Parameter TDS E01 Temperature circuit is damaged send back for repair E02 Temp value is lower than range limit or temp circuit is da...

Страница 19: ... 7078 1500μS 757 1 0 5047 737 1 0 4914 1050 0 7 2070μS 1045 0 5048 1041 0 5029 1500 0 7246 2764μS 1382 0 5 1414 8 0 5119 2062 7 0 7463 8974μS 5101 0 5685 4487 0 5 7608 0 8478 12 880μS 7447 0 5782 7230 0 5613 11 367 0 8825 15 000μS 8759 0 5839 8532 0 5688 13 455 0 897 80mS 52 168 0 6521 48 384 0 6048 79 688 0 9961 442 40 sodium sulfate 40 sodium bicarbonate and 20 sodium chloride info GlobalScienti...

Страница 20: ...the above formula and the result is the TDS in ppm APPENDIX C TEMPERATURE EFFECT Conductivity measurements are temperature dependent if the temperature increases conductivity increases For example the conductivity measured in a 0 01M KCl solution at 20 C is 1 273 mS cm whereas at 25 C it is 1 409 mS cm The concept of reference temperature Normalization temperature was introduced to allow the compa...

Страница 21: ...rature T Sample temperature θ Temperature coefficient Note the correction is accurate only within a limited temperature range around T1 and T2 The greater the difference between T and Tref the higher the risk of error Calculating Temperature Coefficients θ By measuring the conductivity of a sample at temperature T1 close to Tref and another temperature T2 you can calculate the temperature coeffici...

Страница 22: ...0 C Ultrapure water 5 2 C Average temperature coefficients of standard electrolyte solutions expressed as C of the conductivity value at 25 C Temp range C F KCl 1 M KCl 0 1 M KCl 0 01 M Saturated NaCl 15 25 C 59 77 F 1 725 1 863 1 882 1 981 15 25 35 C 59 77 95 F 1 730 15 27 C 1 906 1 937 15 34 C 2 041 25 35 C 77 95 F 1 762 15 27 C 1 978 1 997 25 34 C 2 101 info GlobalScientificSupply com www Globa...

Страница 23: ...info GlobalScientificSupply com www GlobalScientificSupply com GLOBAL SCIENTIFIC SUPPLY The Laboratory Supply Company ...

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