Dexsil L2000DXT Скачать руководство пользователя страница 29 | Manualshive

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Dexsil L2000DXT Скачать руководство пользователя страница 29

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Care and Maintenance

General Care

Your

L2000

DXT

is designed for ease of use and reliability requiring very little maintenance. By

following the instructions outlined below, you should be able to obtain maximum life from the
electrode and the instrument itself.

Do not allow the instrument to get wet. As with any electronic instrument, water is the quickest
way to destroy the

L2000

DXT

components. Store the instrument in its case when it is not in use

and do not expose it to extremely humid environments.

Remove the USB drive from the unit before returning it to the carrying case.

  Be  careful  not  to  spill  any  of  the  solutions  on  the  instrument.    They  are  all  acidic  and  will
quickly destroy the  circuitry if they come into contact  with  it.   If solutions  are spilled onto  the
instrument, wipe it off quickly with a damp cloth.  Do not store solutions in the same case with
the instrument, as any leakage may cause serious damage.  This is particularly important when
the instrument is to be shipped by air.

When  using  the

L2000

DXT

where AC power is available, operate the instrument with the AC

adapter. This will prolong the life of the battery and insure that the battery is always charged.

Always  store  the  analyzer  with  fully  charged  battery.    (A  completely  dead  battery  could  take
approximately 6-8 hours to charge fully.)

If the unit is to be stored for prolonged periods of time, it is important to periodically charge the
battery. This will prolong the battery life and ensure that the analyzer is always ready for use.

Protect  the  analyzer  from  static  electric  charges.    The  keypad  and  case  are  isolated  from  the
internal  circuitry  and  are  not  susceptible  to  static  discharge.    However,  when  connecting  the
electrode to the meter, under certain environmental conditions, the static discharge may reset the
power  management  circuit.    Before  connecting  the  electrode,  first  touch  the  outer  ring  of  the
BNC connector with one hand while holding the metal connector on the electrode in the other.
Then connect the electrode to the Analyzer.

The

L2000

DXT

analyzes for PCBs/Chlorinated Organics by finding the total amount of chlorine

in  a  given  sample.    Therefore,  it  is  important  to  keep  all  extraneous  sources  of  chlorine  away
from  the  instrument  and  the  various  solutions.    Take  extra  precaution  when  working  near  salt
water  or  under  very  warm  conditions  when  contamination  by  perspiration  is  possible.    Never
pour  used  CALIBRATION,  RINSE,  or  EXTRACT  solution  back  into  a  storage  bottle  as  the
entire bottle may become contaminated.

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Содержание L2000DXT

Страница 1: ......

Страница 2: ...rranties of merchantability or fitness for any particular purpose Further Dexsil Corporation reserves the right to revise this publication and to make changes from time to time in the contents hereof...

Страница 3: ...gram 11 Main Menu 11 Calibration 12 Blank Determination 13 Analysis 15 Entering Header Information 16 Creating or Editing a Method 16 Data Management 18 Change Date or Time 20 Check Electrode 20 Sampl...

Страница 4: ...ive or worst case conversion factor is chosen to provide an upper limit for the concentration of the target analyte in the sample There are three basic steps involved in the chemical analysis for tota...

Страница 5: ...volume determines the sensitivity of the test The extract is reacted and the chloride is quantified as above In water samples only the organic chlorine is quantified Wipe tests require that a specific...

Страница 6: ...ped in its own carrying case complete with all the hardware necessary for operation Upon receiving the L2000DXT Analyzer please verify that all of the items listed below are present and in good workin...

Страница 7: ...f CALIBRATION solution 1 60 mL bottle of Electrode Filling Solution 1 box of tissue wipes 1 40 cell box containing 20 empty 20 mL glass vials 20 bottles containing Soil Extraction Solvent 1 shelf pack...

Страница 8: ...ng in a heat sealed foil bag 20 filters 20 pipettes 20 reaction tubes black dispenser caps 20 empty test tubes with white caps 1 set of instructions Reorder Part No LP WRK Option 4 Reagents for 20 Wip...

Страница 9: ...d be charged overnight using the power cube supplied with the instrument The Analyzer can be operated from line power while the battery is charging and should be left plugged in whenever AC power is a...

Страница 10: ...each 140 mV or greater within 1 minute If the electrode output does not reach at least 140 mV by the time the 2 minute buzzer sounds empty the RINSE solution and refill with fresh RINSE solution If th...

Страница 11: ...to the main analysis loop for sample analysis is through the Analysis button Choose a Method is used to create edit or select a new method Pressing Help will open the help screens The Data Management...

Страница 12: ...the function of the electrode will also be evaluated If the electrode potential for the calibration solution is not within the acceptable limits 50 mV 75 mV a warning will be displayed and the progra...

Страница 13: ...the START SCREEN should be the serial number of the unit along with the software version number If a USB drive is plugged in the name of the data file on the drive will be displayed otherwise the mess...

Страница 14: ...isplayed method is the desired one press ENTER to select it to move on to the CALIBRATION screen Calibration The first step required before any measurements can be made is to calibrate the electrode T...

Страница 15: ...n If the calibration voltage is acceptable the pass message will appear Pressing BACK will return to the MAIN MENU and ENTER will jump operation to the BLANK INPUT screen Blank Determination Once the...

Страница 16: ...l entry of the desired blank NOTE It is a good practice to periodically measure a reagent blank to keep tabs on how the meter is working and to verify that the current lot of reagents is free of extra...

Страница 17: ...the pop up alpha numeric keypad A three digit numeric extension will be added to the ID and will automatically increment if the name is re used without a change Once the sample ID has been entered pr...

Страница 18: ...ion can be disposed of as ordinary aqueous waste containing nickel Entering Header Information There are 5 custom identifiers available in the header of the stored data file which can be up to 15 char...

Страница 19: ...nt 10 100 Sample Size Correction 0 01 100 Extraction Efficiency Correction 0 01 100 Matrix Oil Soil Water Wipe Units to be Displayed ppm mg kg ppb ug sdm Analyte Label 15 character alpha numeric Metho...

Страница 20: ...ect the Data Management option from the MAIN MENU From the DATA MANAGEMENT screen The options available are Export Data Review Data and Delete Data Choosing any of these options will open further scre...

Страница 21: ...Tot Pt 7 hh mm 9 Char Samp ID ID Ext Raw Cl Calc Res Sample Tot Pt 8 hh mm 9 Char Samp ID ID Ext Raw Cl Calc Res Sample Tot Pt 9 hh mm 9 Char Samp ID ID Ext Raw Cl Calc Res Header Info Op ID Cust ID J...

Страница 22: ...ing the temperature will disable the temperature probe and should only be used if the probe is either lost or damaged Once overridden the temperature will remain disabled until the unit is turned off...

Страница 23: ...S from the MAIN MENU Rinse and refill the RINSE vial with fresh rinse solution and swirl the electrode in the solution gently for a few seconds Allowing the electrode to sit in the rinse solution veri...

Страница 24: ...minutes 5 Place a polyethylene filter funnel in one of the 20 mL glass vials marked with the sample number Position the black capped test tube directly over the top of the funnel and open the dispense...

Страница 25: ...ght fit and the drying column may have to be carefully worked onto the syringe Make sure that it is seated tightly 4 Remove the black dispensing cap from the plastic test tube that contains two glass...

Страница 26: ...eful not to get any foreign material into the weighed sample i e absorbent material large rocks etc The empty tube can be tared by placing it on the balance and pressing the ON OFF ZERO key 2 Add the...

Страница 27: ...ample 2 Add 10 mL of isooctane extraction solvent and shake vigorously for 30 seconds 3 Allow to separate into two phases for a minimum of 2 minutes If a emulsion forms add sodium sulfate2 shake and a...

Страница 28: ...the black capped tube up to the 5 mL line Replace the cap tightly on the tube 4 Break the bottom colorless ampule in the tube Shake the tube well for 10 seconds 5 Break the top gray ampule in the tub...

Страница 29: ...the battery is always charged Always store the analyzer with fully charged battery A completely dead battery could take approximately 6 8 hours to charge fully If the unit is to be stored for prolonge...

Страница 30: ...ith distilled water and store it dry with the protective black cap to protect the sensing membrane Make sure to follow the procedures for restoring electrodes before using the electrode again see Rest...

Страница 31: ...ill not exceed 140 mV Replace the RINSE solution and swirl the electrode for several seconds before letting the reading stabilize Replace the filling solution in the electrode as described in Restorin...

Страница 32: ...solvent and follow the instructions as you would for any sample NOTE This technique causes a loss of precision and should not be used unless absolutely necessary Error Messages CAL ERROR This message...

Страница 33: ...restoring an electrode Measured Result 9999 This result for an unknown measurement indicates that the calculated reading is above 5000 ppm in analyte concentration This message only appears during an...

Страница 34: ...ature is displayed exit the error screen by pressing BACK and beginning the Analysis process again If the probe is lost or cannot be fixed any prepared samples can still be analyzed by setting the tem...

Страница 35: ...e in the Field S Finch pp 45 1 to 45 4 Proceedings 1991 EPRI PCB Seminar DTR 12 01 Application of a New PCB Field Analysis Technique for Site Assessment Roger D Griffin Griffin Environmental Proceedin...

Страница 36: ...and Development Washington D C Report December 2000 DTR 21 01 Analysis of Water for PPB Range Chlorinated Organics Using a Total Organic Chlorine Analyzer Theodore B Lynn Ph D Mary Kate Boggiano Larr...

Страница 37: ...or 1254 yes 54 1 1 1 Soil ppm AROCLOR 1254 2 STEP 1254 Aroclor 1254 yes 54 1 1 Wipe g 100scm AROCLOR 1254 1254 WIPE Aroclor 1254 yes 54 1 1 25 Water ppm AROCLOR 1254 1254 WATER HIGH Aroclor 1260 yes 6...

Страница 38: ...i chloro ethane yes 80 10 2 03 Water ppb 111 TRICHLETHANE 111 TRICHL WATER Tetrachloro ethylene yes 86 1 1 00 Soil ppm TETRACHLOR TETRACHLOR SOIL Tetrachloro ethylene yes 86 10 1 89 Water ppb TETRACHL...

Страница 39: ...Low Power Warning and Shut Off Digital Processor Microchip PIC A D Converter 24 Bit Auto Ranging Memory 2 MB EEPROM Method Storage 33 Pre programmed Methods Up to 22 User Defined Methods Data Storage...

Страница 40: ...38 Appendix D Program Flow Diagram...

Страница 41: ...39...

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