Lamotte 2020wi Portable Turbidity Meters User Manual

2020we/wi1970-EPA1970-ISO

 EPA COMPLIANCEThe 2020we meter meets or exceeds EPA design specifi cations for NPDWR and NPDES turbidity monitoring programs as specifi ed by the USE

COMPUTER CONNECTION  PC LINKThe 2020we/wi may be interfaced with any Windows-based computer by using the LaMotte SMARTLink 3 Program and USB Cable. T

To extend the battery life:• Shut down the unit with the power switch when not taking measurements or use the power save option to have the unit auto

TURBIDITY  WHAT IS TURBIDITY? Turbidity is an aggregate property of the solution, which is water in most cases. Turbidity is not specifi c to the type

reported as Jackson Turbidity Units (JTU). The lowest turbidity that can be determined with this method is about 25 NTU. There are two common methods

 TURBIDITY UNITSTraditionally, turbidimeters designed for use in the United State were made to the specifi cations of EPA Method 180.1. This method d

Acronyms Defi nitions NotesRegulatory MethodNTU Nephelometric Turbidity UnitsIncandescent white light between 400 and 600 nm, 90° detection, 2020weEPA

 SAMPLE DILUTION TECHNIQUESIf a test result is out of the range of the meter, it must be diluted. The test should then be repeated on the diluted sa

 AVERAGINGThe averaging option allows the user to average multiple readings. This option will improve the accuracy of samples with readings that may

5. Press or to scroll to the desired option.Averaging MenuDisabled2 Measurements5 Measurements10 Measurements12:00:00 001/500

 TURBIDITY OPTIONSThe default units are NTU and FNU and the default calibration curve is formazin. NTU will be used in this example. To change the s

5. Press ENTER to select Turbidity Units.Set Turbidity UnitsNTUASBCEBC12:00:00 001/500 Available units are:NTU (Nephe

Selecting a Turbidity Calibration Curve1. Press and briefl y hold to turn the meter on. The LaMotte logo screen will appear for about 3 seconds and

6. Press ENTER to select Turbidity Calibration.Turbidity CalibrationFormazinJapan Standard12:00:00 001/500 7. Scroll

24  SETTING THE CLOCK1. Press and briefl y hold to turn the meter on. The LaMotte logo screen will appear for about 3 seconds and the Main Menu wil

5. Press ENTER to select the fi nal character. The time and date will be saved and the screen will return to the Options Menu.Options MenuAveragingTurb

 SETTING POWER SAVEThe power saving Auto Shutoff feature will turn the meter off when a button has not been pushed for a set amount of time. The def

5. Press ENTER to select PWR Save.Auto ShutoffDisable5 Minutes15 Minutes30 Minutes12:00:00 001/500 6. Press or to

 SETTING THE BACKLIGHT TIMEThe backlight illuminates the display for enhanced viewing. If Button Control is chosen the backlight button on the key p

4. Press to scroll to Set Backlight Time.Options MenuTurbidity OptionsSet ClockSet PWR SaveSet Backlight Time12:00:00 001/500

CONTENTSGENERAL INFORMATION  Packaging and Delivery 5  General Precautions 5  Safety Precautions 5  Limits of Liability 6  Specifi cations 6

 FACTORY RESETPerforming a Factory Reset will restore the factory default settings. All user-level calibrated settings will be lost.1. Press and br

6. Press ENTER to complete the Factory Reset. The screen will momentarily display Writing. The screen will display Done and return to the Options Menu

 SELECTING A LANGUAGEThere are seven languages available in the 2020we/wi: English, Spanish, French, Portuguese, Italian, Chinese, and Japanese (Kan

6. Press or to scroll to desired language.Select LanguageEnglishSpanishFrenchPortuguese12:00:00 001/500 7. Press

DATA LOGGINGThe default setting for the data logger is enabled. The meter will log the last 500 data points. The counter in the center bottom of the d

5. Press or to scroll through the data points in the log.Record Number 1Turbidity - WB (F)95.4 NTU12:26:44 PM 08-03-201012:00:00

CALIBRATION & ANALYSIS  CALIBRATIONTurbidity StandardsOnly use AMCO or formazin standards with the 2020we/wi. StablCal® standards below 50 NTU sh

retain the old calibration data for the other ranges. It is recommended that the meter be calibrated for each range that will be used. The value of th

5. Rinse a clean tube (0290) three times with the blank. If samples are expected to read below 1 NTU the meter should be blanked with a 0 NTU Primary

9. Press ENTER to scan the blank. The screen will display Blank Done for about 1 second and then return to the Turbidity - With Blank Menu.Turbidity W

 Dilution Procedure 46  Preparation of Turbidity-Free Water 47  Testing Tips 48TROUBLESHOOTING GUIDE  Troubleshooting 50  Stray Light 50GEN

14. Press ENTER to scan the standard. The screen will display Reading for about 1 second. The result will appear on the screen.Turbidity WB (F)0.99 NT

19. Press ENTER to select Set Calibration and save the calibration. Press or to scroll and select Factory Setting to revert to the factory calibrati

3. Press ENTER to select Turbidity - No Blank.Turbidity NB (F)Scan BlankScan Sample12:00:00 001/500 4. Rinse a clean

8. Press ENTER to select Scan Sample. The screen will display Reading for about 1 second. The result will appear on the screen.Turbidity NB (F)10.22 N

4. Press ENTER to select Turbidity - With Blank.Turbidity WB (F) Scan BlankScan Sample12:00:00 001/500 5. Rinse a c

458. Open the meter lid. Insert the tube into the chamber. Align the index line on the tube with the index arrow on the meter. Close the lid.9. Press

13. Open the meter lid. Insert the tube into the chamber. Align the index line on the tube with the index arrow on the meter. Close the lid.14. Press

be the same whether it is called 0.00 NTU or 0.02 NTU. For design simplicity the 2020we/wi uses the term turbidity-free water and the value of 0.00 NT

3. Remove the fi lter from the syringe. Remove the plunger from the barrel. (This step is required to prevent rupturing the fi lter by the vacuum that w

for wiping a fi lled tube before placing it in the meter chamber. Invert tube very slowly and gently three times to mix the sample. Surround the tube w

GENERAL INFORMATION  PACKAGING AND DELIVERYExperienced packaging personnel at LaMotte Company assure adequate protection against normal hazards encou

TROUBLESHOOTING GUIDE  TROUBLESHOOTINGPROBLEM REASON SOLUTION“Blank?” Sample is reading lower than the blank.With samples of very low concentration r

GENERAL OPERATING INFORMATION  OVERVIEWThe 2020we/wi is a portable, microprocessor controlled, direct reading nephelometer. Turbidity is measured dir

 The KeypadThis button will scroll up through a list of menu selections.ENTERThe button is used to select choices in a menu viewed in the display.Th

Header Menu TitleMain Selection WindowFirst ChoiceSecond ChoiceThird ChoiceAnotherFooter12:00:00 001/500 And AnotherA

The display may show the following messages:Battery Status More choices are available and can be viewed by scrolling up and/or down through the displa

55detergent prior to use to remove dirt or fi ngerprints. The tubes should be allowed to air-dry in an inverted position to prevent dust from entering

including phone and FAX numbers to the shipping carton. This information will enable the service department to make the required repairs more effi cien

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 LIMITS OF LIABILITYUnder no circumstances shall LaMotte Company be liable for loss of life, property, profi ts, or other damages incurred through th

802 Washington Ave • Chestertown • Maryland • 21620 • USA410-778-3100 • 800-344-3100www.lamotte.com1970-MN • 02.01.12

Operation Humidity Range:0–90 % RH, non-condensingAuto Shut-off: 5, 10, 30 min, disabledWaterproof: IP67 with USB port plug in place.Power Source†: US

be very bad! This is not a useful measure of the performance of a test method.Repeatability: Repeatability is the within-run precision.5 A run is a s

 CONTENTS & ACCESSORIES2020we KitEPA VersionCode 1970-EPA2020wi KitISO VersionCode 1970-ISOContents Code Code0 NTU Standard, 60 mL 1480 14801 NT