Home

(Computrac) MAX® 2000XL User`s

1. e Press the Esc key to return to the REPORT SETUP MENU e Move the select bar to REPORT ITEMS TO PRINT and press the Selct key Move up and or down through the list and select the items to be printed e Press the Esc key until the MAIN TEST SCREEN 1s displayed e To verify that the MAX 2000XL and the printer are connected and working together perform a weight test and monitor the printing operation Page 22 5 10 Connecting a Computer If you wish to monitor the test with a computer connect a null modem cable to the smaller of the two D connectors at the rear of the instru ment Use any serial port communications program not provided on your computer to read the messages emitted at the MAX 2000XL serial port The content of each message can be selected from the REPORT ITEMS TO PRINT menu which is described on page 42 aE yy e The MAX 2000XL comes equipped with RS 232 communications available at a 9 pin standard serial communications socket at the rear of the instrument The standard communications parameters used are 9600 N 8 1 9600 baud no parity eight data bits one stop bit Refer to your computer communications program manual for instructions on configuring the PC to read this data format e The MAX 2000XL does not test to see if the connected device is actually ready or even present nor does it respond to a request by the connected device for status information e Since the MA
2. e Program an empty Memory Start location or program the Param key location to the following testing conditions Sample Name Drift Test Temperature 2000C Ending Criteria End Test on Time Time to End 20 minutes Sample Size 25 grams Sample Window 6 grams Tare Options Pan Tare Option Standard Sample Tare Option Start After 8 Seconds Lift Comp Pct 000 e Use the default parameters for the other program options e Ifthe Drift Test parameters were programmed using Param press the START key at the opening menu screen e Ifthe Drift Test parameters were programmed into a vacant Memory Start location press the Memry key to access the stored test programs Use the up or down keys to highlight the Drift Test location e Press START e When the OPEN LID prompt appears on the screen open the lid and GENTLY place a new clean sample pan on the pan support e Close the lid and allow the unit to tare e When the OPEN LID prompt appears on the screen open the lid and carefully place a 20 gram weight and a much smaller weight such as 20 milligrams not normally supplied onto the sample pan e Close the lid e After the testing screen is displayed and the temperature reaches 200 C gently open the lid and carefully remove the small weight e Wait for the end of the test Page 66 Press Menu Use the up or down arrow key to highlight the STORED DATA MENU Use the up or down arrow key to select VIEW STORE
3. Backlight connector disconnected Open front panel and reconnect Call AZI at 1 800 528 7411 or 1 602 470 1414 for assistance Heat will not turn off Circuit board failure Call AZI at 1 800 528 7411 or 1 602 470 1414 for assistance Page 60 solids too low see pages 29 8 49 1 602 470 1414 for assistance Lift compensation too small Increase lift comp pct see page 34 Dirty heater assembly Clean heater assembly see page 56 Ending Criteria incorrect Determine new ending criteria see page 30 Call AZI at 1 800 528 7411 or 1 602 470 1414 for assistance Moistures too low or Temperature too low Increase temperature Sample size too small or too large Adjust sample size see pages 31 amp 51 Sample needs spreading Spread sample evenly see page 50 and or 51 Lift compensation too large Decrease lift comp pct see page 34 Ending Criteria incorrect Determine new ending criteria see page 30 Call AZI at 1 800 528 7411 or 1 602 470 1414 for assistance Moisture never stops Other volatiles Try lower temperature increasing see pages 29 amp 49 Balance drifting Run drift check see page 66 No graphical display Graphics not selected Press Graph key at Main Test Screen No heat Voltage selection wrong Check power module at rear of instrument set to correct voltage See page 13 Wiring failure in heater circuit Call AZI at 1 800 528 7411 Page 61 No heat cont Door sensor failure Check displ
4. TIME Time for End Test on Time Page 36 This function is used to work with data stored in the STORED DATA MENU instrument from past moisture determinations To access UTE STORED DATA this function go to the Main Menu and select the STORED ANALYZE STORED DATA PRINT STORED DATA DATA MENU DELETE STORED DATA gt View Stored Data This function is used to view a list of all stored test results The list is presented in abbreviated form consisting of the sample name date and the final result Pressing Selct displays the targeted stability reliability tares rate and lift compensation percentage if they have been selected in the REPORT ITEMS TO PRINT menu see page 42 Moving the selector bar to a particular test and pressing Selct changes the screen to a display of the entire stored test result gt Analyze Stored Data To analyze a set of data select ANALYZE STORED DATA This function is used to do mathematical calculations on selected stored test data Mean Standard Deviation and Coefficient of Variation are calculated using the following formulas For 21 CFR Part 11 compliant instruments results must be recorded by hand or printed out The calculations are then performed by means of a calculator or computer e Mean or average total of results divided by number of results 2 Standard Deviation an n e Coefficient of Variation Standard Deviation divided by Mean times 100 Use the arrow keys to
5. there is usually no need to link more than two or three The linked test will end when a memory start containing Link Enable OFF is encountered To run a single memory start the Linked Test Option must set to OFF Rate Timeout If the Rate Ending Criteria 1s selected and the sample loses no moisture the test will never end To allow the test to end after a reasonable time the Rate Timeout option may be set to the desired time Setting the time to 000 disables this option Display Purity Turns the purity calculation on or off The calculation multiplies the percent moisture by a Purity Factor of a product to provide an indication of impurities in the product sample Purity Factor A number provided by the user and entered as a parameter for the purity calculation The default number is 4 778 which is the purity factor for gypsum Page 35 gt Reorder Memory Start MEMORY START MENU OO Allows a stored parameter set to be copied from ADD EDIT MEMORY START one position and pasted to another position in the REORDER MEMORY START bags DELETE MEMORY START list If you paste a set over an existing set the PRINT MEMORY STARTS existing set 1s replaced and cannot be recovered Be careful To quickly create a new set similar to an old one use REORDER to copy the old one to a Y Esc Selct blank location then use ADD EDIT to enter the new name and changed values gt Delete Memory Start This command removes a stored
6. 40 C 50 relative humidity and 0 31 C 80 relative humidity e Do not expose the moisture analyzer unnecessarily to extreme temperatures moisture shocks blows or vibration UNPACKING THE MOISTURE ANALYZER e After unpacking the moisture analyzer check it immediately for any visible damage resulting from rough handling during shipment e Save the box and all parts of the packaging to use when returning your moisture analyzer for calibration Only the original packaging provides the AZI recommended protection for shipment Before packing your moisture analyzer for shipment unplug all connected cables to prevent damage during transit WARNING SYMBOLS Protective Ground Identifies the connection on the Chassis and Power Inlet Module for connection of the safety ground green yellow wire gt Warning Information or procedure that must be observed gt 3 Electrical Shock Hazard Observe all steps of the procedure to prevent electrical shock gt 3 Warning Hot surface or area of possible severe burns Use listed precautions when opening the oven lid and handling samples to prevent injury 2 PACKING AND SHIPPING INSTRUCTIONS IMPORTANT Movement handling and packaging of the instrument must be done with EXTREME CARE to avoid permanent expensive internal damage The MAX 2000XL uses a delicate and very sensitive electronic force balance to measure small weights and weight losses The balance
7. If the test results need to be saved they should first be printed or stored in a computer file The list consists of the memory start number used the sample name or lot number and the final result Moving the selector bar to a particular test and pressing Select will erase the record so be careful If the list is empty the screen will show NO MENU ITEMS 6 4 CALIBRATION MENU The calibration menu provides access to two instrument CALIBRATION MENU calibration routines one for the balance and the other for BALANCE CALIDRATI N the heater TEMPERATURE CALIBRATION Esc Select gt Balance Calibration The balance should be calibrated immediately after initial setup whenever the instrument is moved whenever a BALANCE CALIBRATION problem is suspected or as set forth in your Quality Policy eg Tie PRINT BALANCE CAL REPORT See page 17 for the balance calibration instructions SETUP BALANCE CAL PROMPT Esc Select Page 38 gt Temperature Calibration For optimal performance the MAX 2000XL temperature TEMPERATURE CALIBRATION calibration should be run in an environment that is free from air currents and general activity evenings or smaller staffed shifts RUN VERIFICATION TIP The temperature calibration and verification take PRINT CAL REPORT are best CAL DATE ENTER DEVICE DATA SETUP HEAT CAL PROMPT Esc Select approximately 5 hours If time is critical the process can be completed in approximately
8. T MEMRY Memory Start SelectiONS occcccooccccccocnccccoononoconcnnonononnonannnnononcnnnonanonconannnnnnns 45 8 GRAPH Displaying the Moisture Trend Plot cccoooccccccccconcccocnococanococoncnnnonanonnnnanons 45 9 PARAM Temporarily Changing Test ParameterS occcconccnccoccnconoccnnononcnncnnnnncnnnncnnononcnnnnnas 46 10 MISCELLANEOUS MESSAGES ccccccccccccsccscsccacsccscsecessesecsesstsesacsassesacsevassecsesacstsacsetacseeees 46 lOl ContokPrograni Version NUDE do 46 10 2 Diaphostie Failure Messa es ii a aa cee 47 11 PERFORMANCE ENHANCEMENT ccccccsseccsssscssecceseccecsesesessesscsessesacsesacseacsesacsetactacsesaes 48 11 1 Delectiomor Test TEMPE ds ea ao ll o ad 49 PTZ Selecion OF ENS Cri Ailes laa 50 11 3 Preparing Granular and Powdery Samples ccccccccsceseseessssccssesesesdecsusecesssesecsessssceesesecsroeseoses 50 PA Preparing and Testing Liquid Samples didas 51 11 5 Selectimo the Optimum Ss apli 51 12 PERFORMANCE VERIFICATION cccccccccccoseccesccsseccsccessesecsessssessesassesacsesacseacsesacsecsttacseeaes 52 WU The WW Cr Test 52 122 The Precison WW CVO Te Turcica aE adi is 52 12 3 Sodi Tartrate Tetas id 53 12 4 Precisi n Lartrate Teta cid 54 12 5 Retamed pls tirita tia ai A RS 55 13 ROUTINE MAINTENANCE cccccceccccecccceccacsccecsesecsesecsassesatsesatsesassassesassesassesacsacstsacsetacseeaes 56 13 1 as ae halle 10 eee eee eae ete ee ae eee ene A A eae
9. Test Screen press Data and then Final e The graph displays time up to 30 minutes on the X axis and a RESULT the result on the Y axis The actual moisture or solids result dotted line and the result predicted solid line are displayed on the graph e The Print key acts as a hot key and will send the graph to the printer PREDICT Lu LE E Lu o e Y Print Menu Data Param Page 45 To develop a new application a few tests are run with different values for parameters such as temperature and sample size Ending criteria and sample size are also changed to improve speed and accuracy To speed this process the Param function allows immediate alteration of a test parameter and immediate execution of a test from the parameter change screen This parameter change function is only available for the parameter set stored in Memory Start 251 entitled CUSTOM To quickly change a parameter press Param at the Main Test Screen Enter the access code if needed and the PARAMETERS MENU START screen will appear Make the necessary changes to the listed parameters including a unique sample name to help identify different test runs and press START any time to begin a test with the altered parameter values 10 1 Control Program Version Number For troubleshooting purposes AZI Customer Service may need to know the version or revision of the control program running in IS HAX2008 4L your ins
10. 30 minutes depending on ambient temperature and the chamber temperature stabilized at 80 C for five minutes prior to calibration A vibration free table will speed the calibration process since the balance will stabilize more quickly if it is not subject to vibration e Preheat the chamber to 80 C Ensure the lid is closed and press the Memry key to display a list of the memory Starts Highlight memory start 01 TARTRATE and press the START key Press Quit The unit will heat the chamber to the 80 C programmed idle temperature Wait five minutes Press Memry and highlight 00 WEIGHT Press START Press Quit YYYY VV WV e Balance calibration procedure Press Menu Select the CALIBRATION MENU Highlight BALANCE CALIBRATION and press Selct Ensure CALIBRATE BALANCE 1s highlighted and press Selct Press GO to begin the calibration procedure Follow the prompts to complete the calibration The first prompt is OPEN THE LID e After placing a clean pan on the balance and closing the door the screen will indicate TARING PAN PLEASE WAIT As soon as the tare is finished the next OPEN THE LID prompt will appear e As the lid is opened the screen prompts PLACE ZWg CAL MASS N CENTER GF PAN HANDLE CALIBRATION MASS CAREFULLY VVVV WV CLOSE LID TO CONTINUE Avoid excess pressure on the scale Use the tweezers to gently place the weight on the pan Page 17 With
11. 9 rU ent LLCO USER MANUAL COMPUTRAC MAX 2000XL MOISTURE ANALYZER OPERATION MANUAL November 2002 Firmware Rev 4 3X ARIZONA INSTRUMENT LLC 3375 N Delaware Street Chandler AZ 85225 USA 800 528 7411 602 470 1414 f 602 281 1745 WWW azic com Email General azi azic com International inth azic com Customer Service support azic com ARIZONA INSTRUMENT LLC 3375 N Delaware St Chandler AZ 85225 800 528 7411 sales azic com www azic com MADE IN THE USA AZI P N 700 0028 C1 Last update November 2002 Computrac MAX 2000 XL User s Manual PROPRIETARY RIGHTS NOTICE The material in this manual contains valuable information developed by Arizona Instrument LLC for use with the Computrac line of moisture analyzers No part of this manual may be reproduced or transmitted in any form or by any means electronic mechanical or otherwise This includes photocopying and recording or in connection with any information storage or retrieval system without the express written permission of Arizona Instrument LLC ALL RIGHTS RESERVED Copyright 2002 Arizona Instrument LLC RO No 2A 4 1 4 2 9 STE 2 D2 5 4 2 3 5 6 5 7 5 8 5 9 5 10 5 1 l 5 12 da LO 6 6 1 6 2 D V VVVVVOV gt TABLE of CONTENTS WARNINGS AND SAFETY INFORMATION oocccccccccccncnccoccncnoncnonocononocononncnnoncnnnonnnononenononnnss 5 PACKING and SHIPPING INSTRUCTIONS 0occcocccccc
12. START will begin the test e Memory Starts are numbered at the left beginning with 000 A total of 252 different parameter sets can be retained in the system memory Each has a unique number and a user entered ID label Memory Starts 000 Weight Test and 001 Sodium Tartrate are preprogrammed for system verification These are stored in non volatile memory and cannot be changed Memory start 251 is the CUSTOM parameter set The instrument uses this set when first powered up 1f no other memory start parameter set has been programmed and selected This location 1s also used to store temporary parameter sets entered after pressing Param on the Main Test Screen e Memory Starts 002 though 250 are programmed by the user through use of menu options to set the parameters into the instrument for specific material that is to be measured on a recurring basis e To begin a test using a Memory Start stored parameter set gt Press Memry at the Main Test Screen gt Move the selector bar to the desired stored test parameters set with the up and down keys and press START gt Unless the LOT NUMBER function is selected the test will start immediately using the parameters stored in the instrument at that parameter set 8 GRAPH DISPLAYING THE MOISTURE TREND PLOT e Atthe Main Test Screen press Graph The moisture graph for the current test or the last moisture test if no test is running will replace the Main Test Screen To return to the Main
13. The force balance registers the initial weight of the sample before testing and relays the sample s decreasing weight to the microprocessor for evaluation Balance readings are averaged to eliminate signal interference or erroneous data Within each memory start test temperatures can be programmed between normal room temperature 25 C and 275 C in either a one or two step temperature contour Heating is done through a 700 watt nichrome element which is located on the underside of the test chamber s lid An RTD monitors the temperature of the test chamber and sends that information back to the microprocessor Under the microprocessor s control the heater element is cycled on and off to bring the test chamber to the programmed level Page 48 During the entire testing process the microprocessor monitors the sample s weight loss The sample s decreasing weight is compared to the initial sample weight and the calculated moisture concentration will appear on the display Simultaneously the microprocessor is predicting a final moisture concentration based upon the sample s rate of weight loss compared to the exponential portion of a standard drying curve Testing will continue until the predicted moisture concentration agrees within a certain percentage of the actual moisture concentration appearing on the display The percent agreement between the predicted and the actual moisture concentrations will vary depending upon the system s programming and t
14. The test listed on page 18 simulates moisture release with the removal of one of two known weights This test may be used as part of your control verification program e At the interval established by your quality assurance control program e Any time the unit is moved the power switched off the instrument is jarred or bumped and or e If there is any concern about the accuracy of the instrument 12 2 The Precision Weight Test This is a series of weight tests and is a more critical verification of the instrument s accuracy e Perform the steps in the Weight Test a total of five 5 times If this is a 21 CFR Part 11 compliant instrument all readings must be recorded by hand AZI recommends using a printer to capture the values The calculations must be performed on a calculator since the instrument s storage and analysis functions are disabled Mean Standard Deviation and Coefficient of Variation are calculated using the following formulas gt Mean total of results divided by number of results sn 2 gt Standard Deviation n gt Coefficient of Variation Standard Deviation divided by Mean times 100 Page 52 e After all five 5 tests are complete calculate the mean standard deviation and coefficient of variation or press the Menu key and arrow down to the STORED DATA MENU gt PRESS Selct gt Arrow down to highlight ANALYZE STORED DATA and press Selct gt Arrow up or down to select the
15. a preset percentage value This 1s useful for samples that do not conform to the standard exponential drying model but will show a consistent moisture rate loss at some point in the process The parameter may be set for values from 0 001 to 9 999 loss rate For END TEST ON TIME the MAX 2000XL ends the test after a preset time of up to 999 minutes has past This is sometimes useful for diagnostic and research purposes 11 3 Preparing Granular and Powdery Samples The MAX 2000XL system can be used to test a wide range of products from finely ground low moisture powders to high moisture slurries For best results the sample should be of a uniform particle size distributed evenly over the sample pan If sample material is collected into a jar or sampling bag shake the jar or bag to produce a uniform mixture Liquid samples should also be mixed or shaken to ensure a more homogeneous mixture Large chunk samples such as charcoal or cookies should be crushed or ground to smaller pieces approximately 1 4 or less in diameter Some samples such as dried vegetables may also need to be ground The smaller pieces will easily release moisture during testing leading to shorter test times and more repeatable results Solid granular sample material should be shaken onto the pan from a spoon shaking sample directly from the collection jar will usually deposit only the larger granules not a representative mixture Liquid samples or slurries can be spoone
16. a sample of test material and transport it in an airtight container to prevent moisture gain or loss through contact with the atmosphere e Ifthe instrument has already been configured for your test material simply place a clean sample pan on the pan support press START and follow the instructions displayed on the screen If not set up the material parameters must be entered before accurate testing may begin See the PERFORMANCE ENHANCEMENT section that starts on page 48 and Memory Start Menu section that starts on page 28 for how to store the test setup for future use Call your technical sales representative at 1 800 528 7411 or 1 602 470 1414 for assistance in installing your parameters gt Install a clean dry sample pan and press START gt When LOAD SAMPLE appears on the display add sample NOTE If the instrument displays LOAD SAMPLE but the balance stored a tare weight greater than 0003 grams press START key again If 1t will not zero quit the test and start again Load the sample quickly taking care to distribute it evenly across the entire surface of the pan to get the fastest and most accurate results e After START has been pressed a weight error message may appear on this screen For example if no pan or pan support is on the balance UNDERLOAD will be displayed If the weight on the sample pan exceeds 40 grams OVERLOAD will be displayed If an empty sample pan is in place and either of these dis
17. accurate results in the shortest possible time Typically the instrument results are precise to better than 20 CV from 0 005 0 010 10 CV from 0 010 0 100 2 0 CV from 0 100 100 CV Coefficient of Variation The accuracy of the MAX 2000XL is maintained by periodic balance and temperature calibrations performed by the operator or quality assurance and by annual factory calibration The MAX 2000XL will test at temperatures from 25 C to 275 C set at increments of one degree The advanced heat control program brings the sample up to temperature in less than three minutes Depending on the rate of volatilization of the sample moisture test results are available in as little as two minutes twice as fast as older instruments of this type The instrument is programmable through the easy to use front panel menu system For plant control purposes the programming features can be placed under access code control preventing unwanted changes to operating parameters Advanced computer circuitry enables the instrument to be programmed with test parameters for 248 different materials in addition to the two factory set test parameters Tartrate and weight tests and one rapid change set for parameter development On board memory allows selective analysis of mean standard deviation and coefficient of variation of tests from up to 122 stored test results for X bar reports Test data can e Be stored in the instrument e Be sent direc
18. and press Edit Use the arrow keys to enter or edit a parameter key code of up to eight 8 characters To activate the access key codes highlight ACTIVATE KEYS and toggle the NO to a YES To deactivate the access key codes highlight the ACTIVATE KEYS and toggle the YES to a NO gt Foil Weight Setup Allows up to 25 foils that are used during spray paint analysis to be pre weighed and their weights stored During the sample test the stored foil weight is subtracted from the starting weight of the foil and sample Pan tare will first tare the empty sample pan Follow the prompts to open the lid place a foil on the sample pan and close the lid After the foil is weighed the display prompts EDIT FOIL ID to allow a unique identifying number or name to be given to the foil After entering an ID the weight of the foil is given The weight must be saved to be available during sample testing Open the lid and remove the foil to set up the pan tare operation for the next foil to be weighed Press GO to weigh the next foil or Esc to return to the SETUP MENU Page 44 7 MEMRY MEMORY START SELECTIONS Pressing Memry will display the Stored Parameter Sets more commonly called Memory Starts The list looks like the ADD EDIT MEMORY START list and selections are made in the same manner The difference 1s that once a selection has been highlighted the only soft keys that are functional are ESC and START Pressing
19. eee ee 56 13 2 oa Fhe Rs AA A ne ENE One NA 56 e OS ds A O A TENE AOE Men A Pt 58 14 TROUBLE WES SAGES o e o 59 TO TROUBLE DONON ee ar ee 60 16 SPECIFICA TON Suso A a naanakan aaen 63 17 ACCESSORIES amp MAINTENANCE PARTS ooo ALE LLELE E a a ann 65 18 APPENDIX A DRIFT TEST ou cccccccccccsccccosccsssccecsecsssassssassesassesstsassesassesacsesacsecacsevacsecsetacseaes 66 19 WARRANTY dao ldasa 68 20 MAINTENANCE CONTRACT cccoccsssscsssscecsscessessssacscsassesatsassesassesassesasseacsevacsecattacsetacseeaes 69 Page 4 1 WARNINGS AND SAFETY INFORMATION The MAX 2000XL Moisture Analyzer complies with the Underwriter Laboratories Inc standards and European Council Directives for Electrical Equipment for Laboratory Use electromagnetic compatibility and the stipulated safety requirements However improper use or handling of instrument can result in damage to equipment and or injury to personnel The MAX 2000XL Moisture Analyzer is identified as Equipment Class I Pollution Degree 2 and Installation Category II Read this manual thoroughly before using your moisture analyzer to prevent damage to the equipment Keep these instructions in a safe place An up to date electronic copy of this manual can be found at the Arizona Instrument AZI web site http www azic com The following instructions will help to ensure safe and trouble free operation of your moisture analyzer e Use the moisture analyzer only for p
20. instrument to automatically end a test This feature makes 1t unnecessary for the operator END TEST ON RATE to monitor the analyzer while it is performing a test DE E Selecting this option will display the three ending criteria options Esc Select gt End Test on Prediction The MAX 2000XL uses an advanced version of the AZI moisture prediction method to automatically end each test early to speed test results The prediction method relies on the fact that most samples exhibit a weight loss trend such that the rate of volatilization 1s proportional to the amount of volatile material remaining in the sample The resulting weight trend approximates an exponential function and the prediction algorithm models this exponential function continuously updating the prediction When the prediction 1s sufficiently stable and reliable the test ends and the predicted endpoint is displayed stored in the instrument and printed if an accessory printer 1s enabled and attached Proper selection of the ending criteria can greatly improve the test times and repeatability Auto Criteria Selection The MAX 2000XL monitors the progress of moisture determination and automatically selects the ending criteria most appropriate to the test under way Manual Criteria Selection In a few instances best performance will be achieved by adjusting the ending criteria The first manual ending criterion is called the Reliability Test and is activated when the predicte
21. of Variation Standard Deviation divided by Mean times 100 e Depress Esc until the MAIN MENU is displayed Calculate the mean standard deviation and coefficient of variation or press the down arrow to STORED DATA and press Select Press the down arrow to ANALYZE STORED DATA and press Selct Select the five Tartrate tests Press Calc key Record the results The mean of the sodium Tartrate results should be 0 1 of the value on the bottle label If the result is still out of tolerance the most common causes of such errors are bent or dirty sample pans or debris that may have fallen into the balance shaft Switch the unit OFF Remove the pan support and the balance cover Carefully clean the instrument see page 56 Also clean the heater assembly and check the temperature sensor Ifa temperature calibration device AZI P N 600 0156 is available calibrate the system see page 39 e Repeat the tartrate test again using a clean sample pan for each of the five samples and analyze the results e Ifthe mean is still out of tolerance call AZI customer service at 1 800 528 7411 or 1 602 470 1414 for assistance Page 54 12 5 Retained Samples The we1ght test and the sodium tartrate test are usually sufficient to satisfy industry guidelines for quality control in moisture measurement Some additional checks can be performed using replicate testing of retained samples Retained samples when stored under airtight condition
22. set of parameters Remember to use this carefully as the information can not be retrieved The weight and tartrate parameter sets cannot be deleted with this option gt Print Memory Start This command prints the stored parameters All 252 000 to 251 of the numbered Memory Start Sets are printed giving the values of the parameters shown below in the print out example COMPUTRAC MAX2000XL MEMORY START REPORT ID TST IDL HST SSZ SWNLFT MODE PMDE RY STAB RATE TIME 000 WEIGHT 105 025 025 80 1 0 010 RATE 1 000 001 TARTRATE 150 100 025 80 1 0 170 RATE 0 025 002 TPO 125 100 025 20 0 2 0 150 RATE 0 005 003 BROWN LIS 050 259 0 NO ISO RATE 8050 128 160 025 O25 80 1 0 100 TIME 0005 129 160 025 025 80 1 0 100 TIME 0005 251 CUSTOM 160 025 025 80 1 0 100 TIME 0005 Page X of Y NOTE Full printout of the Memory Starts will take five pages to print all 252 sets The column headings are abbreviations for the following H Identification Number of the Memory Start Set ID Identification Name of the Memory Start Set TST Programmed Test Temperature IDL Programmed Idle Temperature HST Programmed HISTART Temperature Parameter SSZ Sample Size SWN Sample Window LFT Programmed Lift MODE Mode Prediction Rate or Time End Test On Criteria PMDE Prediction Mode Auto or Manual RY Reliability Percentage for End Test on Manual Prediction STAB Stability for End Test on Manual Prediction RATE Rate of Weight Loss for End Test on Rate
23. the 20 gram weight in place gently close the lid As the MAX 2000XL calibrates itself the screen displays the CALIBRATING BALANCE message For best results the unit should not be moved jarred or otherwise disturbed in any way during this calibration time When the calibration is complete the screen displays the results Ifthe result is 20 0000 0 0015 g the calibration c paL RESULT 28 8098 y was successful and the MAX 2000XL is ready for STATUS PASSED use Ifthe weight result is out of this range the calibration was unsuccessful Rerun the calibration e Ifthe calibration fails again contact AZI Customer Service at 1 800 528 7411 or 1 602 470 1414 CAREFULLY REMOVE CAL MASS HIT ESG TO Ealt Press Esc four 4 times to return to the Main Test Menu e To ensure proper calibration and become familiar with the instrument run a weight test This test simulates moisture content by the removal of one of two known weights Ensure a clean dry empty sample pan is placed on the pan support From the Main Test Screen press the Memry key If the highlight bar is not already there highlight 00 ID WEIGHT and press START When the OPEN THE LID prompt appears on the screen open the lid and carefully place both a 5 gram and a 3 gram weight near the center of the sample pan Close the lid After the testing screen is displayed gently open the lid and carefully remove the 3 gram
24. 0 for all samples unless it is found by experiment that another value is more appropriate Contact your AZI technical sales representative at 1 800 528 7411 or 1 602 470 1414 for help on determining the proper value for difficult applications gt Linked Test Options LINKED TEST OPTIONS nn Allows multiple successive memory starts to be run LINE ENABLE OFF together as one test Increasing temperatures rates RATE TIMEOUT 0006 Sec DISPLAY PURITY HO times etc may be selected to monitor the progress PURITY FACTOR M4 778 of moisture loss for research and or control purposes In some materials such as gypsum powder moisture occurs in more than one molecular state usually free water and one or two bound water states Free water evaporates from the sample at relatively low temperatures typically 40 C to 80 C Bound water however requires higher temperatures around 135 C and others around 240 C to break the molecular bonds To provide operator convenience and to avoid rehydration of the sample in handling the MAX 2000XL Linked Test Option may be turned on As the test for free moisture is completed the next memory start in sequence will be initiated This subsequent memory start must contain the parameters for the bound water test The sample integrity will not be compromised between tests since the instrument s lid is not opened Link Enable Although all 248 programmable memory start locations may be linked
25. AC or from 220 to LLOVAC gt Remove the tab in the fuse holder gt Change the fuse A unit operating from 100 120 VAC should have eight 8 amp slow blow fuses AZI P N 190 1001 A unit operating from 200 240 VAC should have four 4 amp slow blow fuses AZI P N 190 1002 gt Slide the card in the center of the fuse holder out turn it around and slide it back in so that the correct voltage shows through the window of the fuse holder gt Ensure the power switch located next to the fuse holder is in the off O position gt Remove the power cord from the packing material and insert the rectangular end into the power receptacle located on the other side of the fuse holder The power source outlet used by the MAX 2000XL MUST BE GROUNDED if you are not sure if the socket 1s grounded check with your plant electrician before proceeding The MAX 2000XL will appear to function correctly even if the socket is not grounded but there is a danger of possible electrocution If grounded outlets are not available consider using a ground fault interrupter to protect personnel against electrical shock Plug the line cord into its dedicated electrical power outlet Line noise on the power lines may affect accuracy A dedicated AC power line or an isolation transformer for the MAX 2000XL may be beneficial in eliminating this noise The MAX 2000XL is designed to remain powered up at all times Turn the instrument on by press
26. D DATA Use the up or down arrow key to highlight the DRIFT TEST Record the START WT and the END WT The following example shows how to calculate the unit s drift Start Wt 20 0255 g End Wt 19 9984 g Difference 00 0271 g Less Removed Wt 00 0200 g Total Drift 00 0071 g The total drift value must be 0 000 0 010 grams Repeat the test several times for precision studies Should the unit fail this test repeat the test one more time Itis possible that a random air current or other phenomenon caused the unit to fail If the unit s memory is erased it will fail a drift test every time If the second drift test does not pass call AZI customer service at 1 800 528 7411 or 1 602 470 1414 for assistance Page 67 19 WARRANTY Arizona Instrument LLC warrants the Computrac MAX 2000XL to be free from defects in materials or workmanship for two years from the date of purchase for those units sold in the USA All other sales normally carry a one year warranty AZI will repair or replace at 1ts option products which AZI determines to be defective during the warranty period All defective parts replaced by AZI become the property of AZI Replacement parts are warranted for the remaining portion of the effective warranty period This warranty does not apply to expendable or maintenance items such as pans and pan supports The above warranty does not extend to any product which has been subjected to misuse abuse neglect accident imp
27. Press the right arrow key to move to the remaining digits to be edited and change each appropriately When finished move the cursor to the end digit and press the key labeled Quit To register the change press the key labeled Accept To cancel the change press the key labeled Cancl The display remains at the TEMPERATURES screen Test Histart Temperature Sets two temperatures for a test one higher at the beginning and one lower part way through the test gt The instrument begins a test at the HISTART TEMPERATURE and continues at that temperature until the rate of moisture loss falls to half of its peak value The heater then changes to the test temperature setpoint for the remainder of the test gt The MAX 2000XL prediction algorithm is so fast this process is usually not necessary gt To deactivate the HISTART feature set the TEST HISTART TEMP to 25 C Idle Temperature The temperature maintained by the instrument between tests This speeds testing by decreasing the time required to heat the sample chamber at the beginning of the test It can save 10 to 90 seconds of test time if properly used A common idle temperature value is 50 C but any value above room temperature but below 15 0 C can be used Experiment to see what value is best for your application Too high a value will cause low results because the sample is evaporating while the basis weight is being measured at the beginning of the test Start Temp Contro
28. Up Ln Dn e The tolerance values will change automatically with the temperature entered The example to the right shows that WERIFICATION SETUP AUTO UERIPY YES the tolerance changed from 2 to 1 when the ADDI on a e ae temperature was changed from 80 C to 110 C TEMP 2 126 C 21 TEMP 3 168 C 41 C TEMP 4 268 C 220 Esc Edit Ln Up in Dn Page 40 At the VERIFY PTS prompt select the number of points to AAA AUTO VERIFY YES be checked between 01 and 04 The example to the right shows two points selected with their values edited To e eG no LOG select which temperature s will be verified toggle down rye Went wera a to the TEMP you wish to change and press Edit If you do not wish to edit the temperatures press the Esc key and move to the next step Esc Edit Ln Up Ln Dn Using the arrow keys enter the temperature you wish to verify between 50 and 275 and press Accpt The temperatures selected should be the ones that best represent those used for your product s When finished press Esc to return to the Temperature Calibration Menu In the TEMP CALIBRATION MENU highlight ENTER DEVICE DATA and press Selct Using the arrow keys enter the appropriate serial numbers and calibration date gt The interface serial number probe serial number and certification date are located on the TCI label on the black box gt The Probe Number located on the RTD fixture should match the probe ser
29. WINDOW i yg ranges can be programmed from 0 200 gram to INSIDE LIMITS TWO BEEPS 39 800 grams OUTSIDE LIMITS H BEEPS gt Sample Size The sample size should be consistent for all tests on a particular product in order to get the best standard deviation possible High volatile materials such as coatings typically require smaller sample sizes one to three grams Low volatile materials such as low moisture resins typically require sample sizes from 20 to 30 grams Contact your technical sales representative at 1 800 528 7411 or 602 470 1414 for appropriate sample sizes Page 31 gt Sample Window The numbers entered set the center and tolerance values of the horizontal weight scale that is displayed when sample is being added gt Inside Limits and Outside Limits Selections of no sound one beep or two beeps may be programmed to signal inside or outside tolerance of sample quantity gt Tare Options TARE OPTIONS nn There are two tare options which define how stable the balance must be before a test will start The SAMPLE TARE OPTIONS SPECIAL OPTIONS third tare option is labeled Special Options and 1s used to tare a syringe foil tray or other light weight device used to carry or hold the sample on the pan Esc Select gt Pan Tare Options PAN TARE OPTIONS This ensures that the drift in the measured weight of the empty pan 1s less than a given number Pan Tare refers to O e the first step in a moistu
30. X 2000XL can send data to both the RS 232 port and the parallel printer port at the same time the same procedure to direct the output to the printer routes the output to computer The graph that is printed by the printer will not be understood by the computer Therefore the menu selection found at Setup Menu Report Setup Report Control Options Include Graph must be set to NO 5 11 MAX 2000XL Communication Software e Arizona Instrument offers a communication software package which enables the user to gt Transfer memory start parameters to and from one or more instruments and store them by instrument serial number Download memory start parameters to other instruments Store test data from the instrument s stored data function in a computer Poll and or interface with multiple instruments using Instrument Network Modules or a Code Operated Switch VV V e Ifyou have any questions about this software package call your technical sales representative at 1 800 528 7411 or 1 602 470 1414 Page 23 5 12 Test Procedure This section briefly describes the steps in running a test on a product sample For additional information on testing and sampling CAUTION Mechanical stops offer some limited protection to the balance mechanism from overload damage caused by vertical forces To prevent damage to the balance use care not to push pull twist turn or bump the sample pan support excessively e Obtain
31. abeled EDIT LOT AND I D NUMBER There are ten spaces for the alphanumeric label characters Each space can be changed with the arrow keys Pressing Incr starts at A and continues through the alphabet the symbols and the numbers Pressing Decr starts with the numbers first 9 to 0 followed by the symbols and then the letters Select the item to be edited with the up and down arrow keys and press Edit Press Quit when editing is complete Press Accept to record the change or Cancl to leave it unchanged The instrument will retain and report the additional information Page 43 gt Access Key Setup Allows entry of access codes to prevent unauthorized user s entry into any menu where data can be edited modified or deleted The use of this option still allows all information menus to be accessed viewed and printed by any user A master key code permits access to all menus whether they are controlled by individual key codes or not If the master key code is forgotten call AZI Customer Service at 1 800 528 7411 or 1 602 470 1414 To enter or edit the master key code highlight EDIT MASTER KEY and press Edit Use the arrow keys to enter or edit a master key code of up to eight 8 characters In addition to the master key code the system allows a calibration key code to be entered so selected users can calibrate the instrument but not have access to other protected menus To enter or edit this code highlight the EDIT CAL KEY
32. ay for LID OPEN message when open during a test call AZI at 1 800 528 7411 or 1 602 470 1414 for assistance Temperature setpoint too low Raise temperature above room ambient or standby temperature see pages 29 amp 49 No power to Check switch position confirm instrument power cord seating test circuit with lamp remove and test fuse No weight reading Balance not initialized Turn power off wait 5 seconds then turn power on wait 15 seconds Call AZI at 1 800 528 7411 or 1 602 470 1414 for assistance Erratic results Poor AC ground Ensure instrument is grounded from case ground to earth ground see page 13 Dirt in Pan Support See page 56 or call AZI at 1 800 528 7411 or 1 602 470 1414 for assistance Pan Support height incorrect Adjust pan support height see page 12 or call AZI at 1 800 528 7411 or 1 602 470 1414 for assistance Display erratic Unit cold near freezing Allow to warm up UNDERLOAD when Sample pan or pan support not in Install pan and or support START pressed place Quit test and press START again see page 12 Instrument won t tare Test chamber temperature Allow system to stabilize fluctuates changes Check tare options Dirt in test chamber or under pan support see page 32 Clean instrument see page 56 and following Page 62 16 SPECIFICATIONS These specifications are intended as a guide to proper use of the instrument Specifications and features will vary w
33. azic com e mail azi azic com General intl azic com International support azic com Customer Support Page 69
34. c Sample Tare Option SAMPLE TARE OPTIONS There are five possible choices under this menu The factory default is START WHEN STABLE START AFTER 3 SEC TARE START AFTER 5 SEC TARE START AFTER 8 SEC TARE START AFTER 24 SEC TARE Start When Stable The balance will start to tare after two seconds Tare is complete and the test will begin when the balance is stable The balance is stable when there is less than 0 3mg difference in the weight measured on successive weight readings Esc Selct Start after 3 Second Tare Test starts after a three second wait Start after 5 Second Tare Test starts after a three second wait and five seconds of averaging Start after 8 Second Tare Test starts after a three second delay and eight seconds of averaging Start after 20 Second Tare Test starts after a three second delay and twenty seconds of averaging To select a SAMPLE TARE OPTION move the highlight bar to the desired choice and press Selct To store the new selection press Esc Page 33 gt Special Options Provides the means to tare either a syringe or foil sample carrier Syringe Tare Used when testing materials with high EDIT SYRINGE START WEIGHT solvent or volatile content The purpose is to account for NEW START WI 48 1357 the weight loss of material that normally would evaporate during the sample loading process An external balance with 0 0001 gram 0 1 mg resolution is used to weigh the syringe before and aft
35. cate the number of weeks between prompt displays Right Incr Decr SETUP HEAT CAL PROMPT Select in order Menu Calibration Menu PROMPT ENABLE ON Temperature Calibration and Setup Heat Cal START DATE 1072572002 Toggle the Prompt Enable to OFF or ON INTERVAL 64 Weeks Edit the Start Date to the desired date to begin prompt intervals Edit the Prompt Time to the time of day the prompt is to be activated usually the start of shift work time Edit the interval to indicate the number of weeks between prompt displays Quit Right Incr Decr A factory set prompt will notify the user when 11 months have elapsed since the last annual factory calibration The 11 month point will give the user time to schedule factory calibration Call AZI Customer Service at 1 800 528 7411 or 1 602 470 1414 for details and directions on factory calibration The prompt may be cleared but it will reappear Page 16 periodically until it 1s reset at the next factory calibration 5 6 Calibrate Balance 20 gram weight required e The balance should be calibrated gt Immediately after initial setup gt Whenever the instrument is moved gt Whenever a problem is suspected or gt As your Quality Policy dictates e The screen will prompt you to have a clean dry sample pan and a 20 gram calibration mass available before beginning the calibration process NOTE Best results are obtained if the MAX 2000XL has been turned on for 20 to
36. ccnccoccnococononocnconcnonononononononononononononaninnns T MAX 2000XL PACKING DIAGRA Mesias 8 INTRODUC TION a 9 INSTRUMENT DESCRIPTION cirrcar pinn E A A Gena 10 Nea F216 1 102 T S ee a ON E E E A E EO ee E oe ore 10 NS A EO ENET E A EN E E EOE ETE 10 INSTRUMENT SE TUP poite a oriol oido 11 Instrument LOC AUN A Oa ees 11 Menor or Test Nam eras 12 AC POW El COEM a a a ate eae ets 13 CONTO maiaa A 14 Senine Calibration Promise a a E a eens 16 Calibrate Balance 20 gram weight TEQUI diva 17 Weight Test three and five gram weights required oocccccccccnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnss 18 Connecting Nitrogen Purge Kit AZI P N Y990 0046 ccccccccceeceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeees 19 Connccino a Pnie gee enn na aA EE E E E EEE IR T ner error rer eee 21 CONE CAMA CIA ias 23 MAX 2000XL Communication SOM Was 23 A PP ON 24 TESTA A cree ean oe nen ee Sere ee eee ere Reena eee ee 25 MENU SYSTEM Instrument Configuration And OperatiON oooccccccocccncccnccnnononenononcnnnnnos 26 MAIN MENU it 27 Memory start Menia a E li ela 28 Add EdE Memory tata A eae 28 w ape NE a N 28 A E S e ince enc sages caaad ates Sea taeiaunse teen wee neanee ies tesa deean core mnmn acne 29 LES LEPE a 29 adn eR AE re ree ce ee ce ene 29 o Soe 29 Start Temp AAPP RA AA 29 A E rae pee emote eee 30 e EMO Feston Prod ICON Ren en a o eae ee 30 AUTO CASA LON A AAA AA A A AS A 30 Manual iterna SC lt AOS 30 gt E
37. company 17 ACCESSORIES 8 MAINTENANCE PARTS CONSUMABLES 800 0037 990 0003 990 0008 990 0010 SPARE PARTS 170 0014 190 1001 190 1002 200 0002 200 0003 200 0008 200 0021 200 0026 300 0106 300 0114 355 0079 600 0152 690 0003 690 0004 690 0007 690 0012 4000 2008 700 0028 Y990 0129 OPTIONS Y990 0156 6000 1044 Y 990 0046 990 0093 990 0114 Y 990 0070 Y 990 0097 Y 990 0098 Sodium Tartrate 500 gram bottle Filter Paper 100 PCS Waffle Bottom Sample Pans 100 PCS Flat Bottom Sample Pans 100 PCS Fan 8 Amp Fuse 4 Amp Fuse Power Cord 110V Power Cord British Standard 220V Power Cord Continental Europe 220V Optical switch Cable Assembly RTD Cable Assembly Inside Shroud Gasket Outside Shroud Gasket Gas Spring Pan Support Assembly Post and Tray Holder 3g Weight Sg Weight 20g Weight Tweezers NiCad Batteries MAX 2000XL User s Manual Pan Support Post Replacement Kit Post only Temperature Calibration Interface Kit with DC Adaptor 110 VAC input 9 VDC output 100ma 3 5mm male plug positive tip Null MODEM Cable Nitrogen Purge Kit Carrying Case H2S Filter Kit Communication Software Kit Dust Filter Kit Printer Kit Parallel 110 V Page 65 18 APPENDIX A DRIFT TEST It is possible to check the drift of the balance to determine if instability is occurring and having an effect on the results This test may be helpful as a troubleshooting tool if instability is suspected
38. d final value and the actual weight loss are sufficiently close together The number displayed 1s a percentage equal to the actual weight loss divided by the predicted end point times 100 For example if 90 1s entered the test will end when the actual weight loss is 90 or more of the predicted end point The second manual ending criterion is called the Stability Test It 1s a measure of the variance or instability of the prediction As the equation to the right indicates a perfectly stable Cirean Ped enon unchanging prediction would have an instability of zero It is zero 1f the current prediction and the previous two predictions are the same value Historical Prediction A prediction that varied over a 2 to 1 range would have an instability of 1 000 It is not practical to have stability numbers greater than 0 010 or less than 0 003 Page 30 In general standard deviation will improve as stability of the prediction increases and decline as stability decreases Selection of the proper stability value 1s a matter of experiment and judgment but can be made easier by printing out the results of multiple tests for comparison gt End Test on Rate This feature ends the test when the weight loss rate falls below a selected value This is a percent per minute value For example entering 0 100 means that the test will end when the rate of change of the actual weight loss per minute is less than 0 100 of the original sample we
39. d or poured onto the sample pan however a pipette or sampling straw will collect a more uniform mixture of the sample All samples should be evenly distributed over the sample pan Page 50 Some liquid samples will dry slowly even at high temperatures Drops or puddles may form on the pan and dry slowly as the sample concentrates A skin may form which limits evaporation from the interior Long test times greater than 25 minutes and low percent moisture or high percent solids values suggest incomplete drying Pre dried glass fiber filter paper and flat bottomed pans are recommended to successfully test samples such as these e The glass fiber filter paper AZI P N 990 0003 serves as a support for the liquid sample The sample is absorbed through the paper for more even and rapid evaporation to reduce test times e Waffle bottomed sample pans are not recommended for use with filter paper The liquid sample may soak through the filter paper and collect in puddles in the pan s depressions Flat bottom pans are available from AZI as part number 990 0010 Call AZI parts sales at 1 800 528 7411 or 1 602 470 1414 to order Occasionally some samples cannot be absorbed into the filter paper At the end of the test examination of the sample pan shows the sample sitting high above the filter paper with a thick crust The crust may be singed from the heat or even show bubbling where vapor has been trapped beneath the surface SOLIDS results wil
40. duct sample repeat each test five 5 or more times to obtain reliable information about the standard deviation of a typical result Each test result 1s automatically stored recording the date time and test setup name The instrument can calculate the mean standard deviation and coefficient of variation of a set of tests through the Stored Data Menu 5 13 Test Data Output e Test results are displayed on the Main Test Screen Graph Screen or Data Screen and can be sent to a printer and or to a computer the computer cannot receive the graph gt The LCD screen can display a graphic depiction of the moisture curve weight loss percentage and predicted final value during the test when the GRAPH key is pressed This information is helpful in determining the proper test parameters for a new sample material gt The test data and a graph can be sent to a printer but only the test data can be sent to a computer for storage For printer output connect a standard PC parallel printer to the MAX 2000XL printer port For communications with a computer connect a null modem cable between the MAX 2000XL RS 232 port and a computer running communications software Call AZI Customer Service for assistance or your technical sales representative for more information on this software Numbers are 1 800 528 7411 or 1 602 470 1414 Page 25 6 MENU SYSTEM INSTRUMENT CONFIGURATION AND OPERATION The MAX 2000XL is controlled by various parameters a
41. er loading The difference in loaded 4 Left Quit Incr Decr and empty syringe weights is then calculated and entered into the MAX 2000XL at the end of the test as the NEW START WEIGHT Foil Tare Used when a sample of sprayed material such SPECIAL OPTIONS as paint is to be tested Up to 25 pieces of foil can be pre weighed before actual testing begins The alpha numeric identity of each foil is stored in memory until it is replaced by other foil tare entries During a test the ID of the foil is entered from a menu of stored foils The weight of the foil Esc Togs in Up is subtracted from the measured weight giving the true weight of the sprayed sample gt Result Display Options RESULT DISPLAY OPTIONS Selects the final display value of moisture solids or DEEPLY ReLT Ac MOLE TUNE dry weight Test results can be displayed as a percentage of weight lost during the test Moisture percentage weight remaining after the test Solids or as a dry MN Fooros ety OS weight Dry Wt basis value Dry weight basis is the weight loss divided by the weight remaining at the end of the test Note that the dry weight value ratio can exceed 100 and often does in applications such as soil and forest fuels analysis gt Lift Comp Pct LIFT COMP PCT The value of lift compensation calculated for the instrument CURRENT LIFT 8 46689 Programmable lift compensation is a feature found only in Computrac instruments It 1s i
42. erforming moisture analysis of samples Any improper use of the analyzer can endanger persons and may result in damage to the analyzer or other material assets e Do not use this moisture analyzer in a hazardous area location operate it only under the ambient conditions specified in these instructions e Although the moisture analyzer is simple to operate and is very user friendly it should only be operated by qualified persons who are familiar with the properties of the sample being analyzed e Ensure before getting started that the voltage rating printed on the manufacturer s label is identical to your local line voltage see the section beginning on page 13 e The MAX 2000XL Moisture Analyzer is provided with a power cord that has a protective grounding conductor Do not operate the unit without the supplied three wire power cord or an identical recognized equivalent that meets all applicable standards e AZI does not recommend the use of an extension cord However if one must be used use an extension cord that meets all applicable standards and has a protective grounding conductor e Do not remove the protective grounding wire from the power supply circuit e With the power switch off power is still applied to the power entry module Disconnect the power cord from the instrument to ensure complete power removal e Position the power cable so that it cannot touch any hot areas of the moisture analyzer e Use only AZI sup
43. fication assigned to the foil FOIL WEIGHT The actual tare weight of the foil PURITY The purity of the sample when computed using the purity factor gt Add Edit Company Name Allows the report headers to be customized to show the name of the company test location or other alphanumeric material gt Clock Setup Used to enter the correct date and time into the instrument s clock system The internal battery saves the clock value when the power is off Use this function to change the time at initial setup when changing for daylight savings time or when the internal battery is replaced If the clock resets or if all memory resets in fact whenever the power is off the internal backup battery may need replacement If this happens call AZI Customer Service at 1 800 528 7411 or 1 602 470 1414 gt Data Format Setup These three functions do not fit into other menu selection criteria gt Ending Criteria Display This process controls display of the PREDICTED END POINT and the ENDING CRITERIA on the Main Test Screen during the test Display of these values is useful during parameter development to aid in selecting the best ending criteria to use for a particular test material These values serve little purpose however during normal operation and may even cause confusion gt Lot Number and Product ID If the LOT NUMBER function is toggled ON in the DATA FORMAT SETUP menu initializing a material test will bring up a screen l
44. five 5 weight tests and press Calc e The mean of the indicated weight loss percentage should be 37 500 020 for a test using the five and three gram weights e Ifthe results obtained from these tests are outside the specified range call AZI Customer Service at 1 800 528 7411 or 1 602 470 1414 for assistance 12 3 Sodium Tartrate Test NOTE If the outside shroud gasket AZI p n 300 0114 is used during routine testing usually with very low moisture samples remove it for this test The gasket will interfere with the high moisture test process The sodium Tartrate test verifies the heater and force balance operation Sodium tartrate dihydrate is a chemical with a known moisture concentration that gives up moisture at temperatures greater than 120 C Because of its consistent moisture concentration it is used as a standard in moisture measurement using oven or titration methods To obtain consistently reliable results use a high quality or reagent grade ACS certified granular sodium Tartrate Grind sodium Tartrate that contains lumps or has an uneven consistency Lumps in sodium Tartrate usually indicate moisture absorption that will yield inconsistent results Sift the sodium Tartrate through a 20 sieve to obtain a more uniform size that will achieve better results Re grind the larger chunks and return them to the bottle as well The test uses approximately 8 grams of sample and is run at 150 C Results should be wi
45. four hours by running the verification portion manually and opening the lid to cool the unit between the calibration and the verification Parts Required Amt AZI Part Number Description l MAX 2000XL MAX 2000XL Moisture Analyzer Temperature Calibration Kit with Y990 0156 9 VDC 100 mA 3 5 mm male plug positive tip DC Adaptor Y990 0098 Printer Kit optional l N A Flathead Screwdriver optional Raise the lid of the MAX 2000XL and turn the instrument power switch to OFF Use the supplied tweezers to lift the pan support out of the balance stem Be careful excess force on the balance could result in costly repairs Set the pan support aside during the calibration If the outer shroud gasket AZI P N 300 0114 is normally used during routine testing usually with very low moisture samples ENSURE THAT IT IS REMOVED prior to performing the Temperature Calibration The gasket will only interfere with the calibration process See page 12 if necessary to identify parts Place the RTD fixture onto the top of the balance cover so that the disk support sinks into the center hole of the balance cover Turn the RTD fixture so that the wires are positioned at the 4 30 position when facing the unit from the front as shown Page 39 To Parallel TCI Serial AC DC Printer Interface Adaptor Cable Cable 2000XL Printer e Plug the probe interface cable into the matching connector on the Temperature Calibra
46. he display screen when certain internal problems occur You will probably never see one of these messages However if one should appear the message and its meaning are provided in the following table With each message a probable cause and a suggested action to take 1s listed BAD EPROM The EPROM is continuously checked against a pre calculated CHECKSUM CHECKSUM to insure against failure This message appears if a discrepancy is detected Probable cause Bad EPROM chip Replace U4 Call AZI at 1 800 528 7411 or 1 602 470 1414 for Action l assistance SRAM SRAM chip is continuously checked for proper operation during program execution Message generated if error in SRAM detected Probable cause Bad SRAM chip Replace U3 Call AZI at 1 800 528 7411 or 1 602 470 1414 for Action assistance HEATER RUNAWAY Message is generated if the lid is closed and temperature exceeds 290 C for 3 seconds It is also generated if the lid is open and the temperature does not decrease according to an exponential model Failed triac or triac driver may be both Probable causes Excess line noise her Use power line conditioner or isolated power line ction Call AZI at 1 800 528 7411 or 1 602 470 1414 for assistance TEMPERATURE Message is generated if temperature circuit is not detected CIRCUIT Probable causes Analog to Digital A D Converter failure RTD failure Bridge circuit failure MPU failure hee Check RTD connection to board c
47. he inside of the heater shroud This darkening affects results as heat 1s absorbed rather than reflected from the heater onto the sample However the browned condition may be allowed to remain on the heater shroud and heater box if test results can be maintained within an acceptable range Page 56 Cleaning Materials Needed Cleaning solution such as 4094 in a spray bottle Cloth and or paper towels Small stiff bristle brush such as a toothbrush or acid brush Cotton swabs or cotton tipped applicators Water for cleaning and wiping shroud and heater after cleaning Small Phillips head screw driver if you elect to remove the shroud VVVVV NV Turn the unit off and remove the power cord Ensure the unit has cooled down to ambient room temperature Remove the sample pan Use the supplied tweezers to remove the pan support up and out of the test chamber Be careful excess force on the balance could result in costly repairs Cover the pan support hole in the bottom of the chamber with masking or other similar tape Carefully mark the RTD with a permanent marker on the inside and outside of the shroud and clamp to mark the relative RTD position in the heater Remove the shroud to provide the maximum cleaning benefit Remove the four 4 evenly spaced small screws located on the outside of the shroud holding it in place Carefully Slide the RTD out of the shroud Take care not to pull the RTD wires out of the heater box while rem
48. he moisture level of the sample The MAX 2000XL is an extremely flexible instrument This flexibility means that some time is required to determine the best set of parameters for a particular application The determination of the proper parameters requires a series of tests and good laboratory procedure Call your AZI technical sales representative at 1 800 528 7411 or 1 602 470 1414 for assistance 11 1 Selection of Test Temperature If the moisture of the sample material is known as determined by a reference method vacuum or air oven the MAX 2000XL s temperature can be adjusted until test results correlate with the established moisture concentration If the moisture is not known prepare a moisture versus temperature curve to decide the proper test temperature for a particular sample Sample material is tested at increasing temperatures increments of ten degrees each The starting temperature is usually 40 the standard or reference method 35 temperature for that particular 30 sample Results for each increasing 25 temperature will usually rise to a 20 plateau where several increasing 15 temperatures do not change the 10 results significantly Beyond this 5 plateau results rise dramatically 80 90 100 110 120 130 140 150 Examination of a sample tested at Moisture Vs Temperature Curve these increased temperatures shows burning or charring Results along the plateau usually correlate well with the standard or reference me
49. ial number on the TCI box and the calibration certificate If it does not call AZI Customer Service at 1 800 528 7411 or 1 602 470 1414 for assistance When the data has been entered close the lid Highlight RUN CAL and press Selct The next screen will ask to ensure that you have the temperature calibration device If the device is hooked up press Go When the verification is complete the screen will display gt The verification temperatures gt The error between the MAX 2000XL and the calibration interface and gt The pass or fail at each verification point If the unit failed at any given point save the data and run the calibration again to improve the results If all the points pass save the data to store the calibration values If a printer is connected to the MAX 2000XL highlight PRINT CAL REPORT and press Selct to print out the calibration report Calibration is complete gt Turn the instrument off gt Disconnect the calibration interface gt Carefully remove the RTD fixture from the balance cover gt Carefully install the pan support Page 41 6 5 SETUP MENU The SETUP MENU is used to program the MAX 2000XL with information relevant to all operations and test From the SETUP MENU it is possible to set up the Printer Clock Access Codes Data Screen and Company Name gt Printer Setup Identifies the type of printer connected to the instrument which port 1s to be used and if an automatic fo
50. ight The instrument s program assumes that the sample contains volatile material that will completely evaporate after some time It further assumes that at first the rate will increase to a maximum point then gradually decrease to zero Selecting some threshold rate value will cause the test to end before the sample is completely dry Rate is useful to profile a sample s weight loss Some applications are faster in the rate ending criteria Others are faster in the prediction ending criteria Some samples contain more than one volatile material for example nylon resins with large amounts of unpolymerized material Caprolactam In these cases the rate will fall to some fixed value when all the moisture 1s evaporated but while the monomer is still evaporating The graphical display available from the Main Test Screen is of great help in visualizing these cases The rate ending criteria if set above the rate of monomer volatilization may give the best results gt End Test on Time This feature places a time limit on a test The test will end when a selected amount of time has passed Fixed time tests are seldom superior to the prediction algorithm but can be useful when conducting application characterization tests or when investigating long term stability of the instrument gt Sample Size Options SAMPLE SIZE OPTIONS This feature enters a target sample size and the SAMPLE CIPE TET minimum and maximum sample range Sample size SAMPLE
51. ing the switch on the back of the analyzer above the power receptacle and the opening screen will appear Page 13 COMTRAST HAXZ2008xL Copyright HH Arizona Inztrunent Version 4 MAX 2000XL Opening Screen Your specific firmware version 1s shown here e Adjust the contrast controls on the analyzer s front panel as necessary to view the screen display OONTAAST e Before beginning any test allow the instrument to warm up for 30 minutes 5 4 Controls e The front panel controls consist of two arrow keys at the left used to adjust the display CONTRAST five small keys below the display labeled lt 4 P A and V and a large START key at the right side of the panel Current time date and time 05 05 2003 14 53 51 125 LAST NAS FINAL 24 864 MOISTURE TIME 02 13 TEST JIJA PRESS START MEMRY SELECTS PRESS MEMRY NEW PARAMETRS PRESS PARAM OK TT 125 Y Memry Menu Graph Param Graphics to show progress To select and change CUSTOM parameters quick To select another set To view tests graphical data Programed oven temperature Data from last test Current selected test Current measured weight Current oven temperature of stored test parameters To access Main Menu options Main Test Screen e Moisture tests are started by pressing the START key gt Ifall system parameters have been selected for the selected test no other key str
52. ion tag for the parameter set used LOT NUMBER Identification tag for the lot of material to be tested now PRODUCT ID Identification tag for the product in this lot of tested material Lot number and product ID are alphanumeric tags entered by the operator to identify a test or set of tests for reporting purposes DATE Date of the test TIME OF DAY Time of the test FINAL RESULT Test result value RESULT TYPE Moisture solids or dry weight basis TEST MODE Ending criteria used for this test START WT Sample basis weight END WT Sample weight at the end of the test Page 42 TEST TIME Minutes and seconds the test was in progress START TEMP Temperature of the chamber when the test started TEST TEMP Test setpoint temperature HISTART TEMP HiStart temperature setpoint e PAN TARE Pan tare setting SAMPLE TARE Sample tare setting SAMPLE CENTER Nominal load weight SAMPLE WINDOW Acceptable load weight ENDREL Reliability ending criterion value at the end of the test e REL TGT Target reliability used for PREDICTION ending criteria END STAB Stability ending criterion value at the end of the test STAB TGT Target stability used for PREDICTION ending criteria END RATE Rate ending criterion value at the end of the test RATE TGT Target rate used for RATE ending criteria LIFT PCT Programmed Lift Compensation Percentage FOIL ID The name or identi
53. ire samples weighing as little as 150 milligrams Be aware that the standard error will be larger for samples this small unless the moisture content is sufficient to cause a weight change of 10 milligrams or more for each test If the first result is too low increase sample size or raise the temperature If it is too high decrease sample size or lower the temperature Page 51 The sample should be added evenly in a thin layer across the entire surface of the pan Once the desired amount has been added the pan can be removed from the test chamber to evenly distribute the sample The sample should be distributed over the surface by gentle shaking tapping or for very viscous samples spread with a spoon or knife Do not spread granular products with a spoon as the particles compress even under gentle pressure affecting test times and results An even layer of sample across the pan will reduce test times and increase precision of results 12 PERFORMANCE VERIFICATION Periodic checks of the system are recommended to verify proper system operation These periodic checks will satisfy some quality assurance requirements as specified in your quality assurance control policy A log is recommended either hand written or computer managed which will record the weight tests sodium Tartrate tests and retained sample s results Shifts in results that are out of range can be quickly detected and the appropriate corrections made 12 1 The Weight Test
54. is capable of measuring weight to a resolution of 0 100 milligram over a sample weight range from 150 milligrams to 40 grams Careful handling is necessary to prevent damage to the balance With proper care the instrument will provide years of dependable UNPACKING Retain all packaging materials for any future shipment of the instrument If the instrument is returned to AZI for any reason it must be placed in the original packaging materials which have been tested and proven to be effective protection during shipment See page 8 REPACKAGING FOR SHIPMENT e Call AZI Customer Service at 1 800 528 7411 or 1 602 470 1414 for Return Material Authorization RMA information prior to returning a unit e For all shipments boxes and packing materials are available from AZI e Pack the MAX 2000XL in a Computrac MAX 2000XL shipping container using the packing figure supplied on the box as a guide AZI WILL NOT BE RESPONSIBLE FOR SHIPPING DAMAGE IF YOU RETURN THE INSTRUMENT IMPROPERLY PACKAGED OR SHIPPED YOU SHOULD INSURE IT FOR FULL VALUE Page 7 3 INTRODUCTION The Computrac MAX 2000XL manufactured by Arizona Instrument LLC of Tempe Arizona is a high performance programmable moisture analyzer It uses the proven loss on drying method to detect the volatile content of a sample of test material The instrument may be programmed to use Arizona Instrument s pioneering prediction method of automatically ending a test to provide
55. ith application AZI product specifications are controlled by ISO 9001 procedures and are established and verified during design They are not to be construed as test criteria for every application Refer to AZI document Number 4C04 0008 for current specifications controlling this instrument All specifications and features are subject to change without notice Periodically contact Customer Service 1 800 528 7411 or 1 602 470 1414 to see if any upgrades are available for your instrument FEATURE Dimensions Weight Casework Power Requirements Heating Range Heater Calibration Test Temperatures Balance Sample Size Resolution Balance Calibration Display Test Display Interface Moisture Range Repeatability Firmware Memory SPECIFICATION 235mm H x 300 mm W x 575 mm D 9 5 in H x 12 in W x 24 in D 13 9 kg 32 lbs Per drawing 7200 0244 110 120 volts 50 60 HZ 1 amp standby or 8 amps heat on or 210 240 volts 50 60 HZ 0 5 amp standby or 4 amps heat on Power control and fuses at rear of unit 25 C to 275 C set point in 1 C increments Menu driven automatic calibration and verification traceable to NIST Requires temperature calibration kit AZI part number Y990 0156 User set to control Idle Hi Start and Test Temperatures through the heating range Built in automatic operation 150 milligrams to 40 grams Moisture 0 001 Balance 0 0001 gram Automatic menu driven one point calibration a
56. l Prevents a test from starting 1f the chamber temperature is more than two degrees hotter or colder than the IDLE TEMPERATURE This feature can improve the standard deviation of results of some temperature sensitive materials When this feature is enabled and an over or under chamber temperature is detected an alarm will sound and the test will quit If START is pressed when the chamber is too hot the alarm will sound and the following message will be displayed CHAMBER TEMPERATURE IS HIGH Open the lid and wait for the alarm Open the lid An alarm will sound as the temperature reduces an appropriate amount below the idle temperature Close the lid and press START The alarm will sound and the CHAMBER TEMPERATURE IS TOO LOW warning will sound Keep the lid closed and the alarm will sound again when the temperature has risen to within two degrees 2 C of the set idle temperature Press START and this time the test will proceed normally Page 29 If START is pressed when the chamber is too cold the alarm will sound and this message appears CHAMBER TEMPERATURE IS LOW Leave lid closed and wait for the alarm then re start test The alarm will sound again when the temperature has risen to within two degrees 2 C of the set idle temperature Press START to begin the test When the TEMP CONTROL is disabled a test can be started at the oven temperature at that time gt Ending Criteria ENDING CRITERIA Used by the
57. l be high or MOISTURE results will be low Samples such as these are treated differently After the sample has been added to the sample pan remove the pan from the test chamber and place it onto a flat surface Grasp part of the filter paper tweezers are suggested and flip it over so that the sample lies between the pan and the paper Squash the sample with a flat bottom glass or jar to a uniform layer Return the sample pan to the test chamber and close the lid The upper filter paper surface absorbs moisture from the sample and minimizes bubbling and spattering to produce more accurate reproducible results 11 5 Selecting the Optimum Sample Size Each particular sample will have its own optimum sample size Best results will be obtained 1f the sample consists of a single layer of particles as long as this is sufficient to develop a weight loss of 10 milligrams or more A rule of thumb is the lower the moisture the larger the sample Low moisture samples less than 0 100 such as chemicals or plastics require larger amounts 20 to 30 grams of sample The larger sample size is necessary to provide sufficient weight loss information to the microprocessor A larger weight change between the initial and final sample weights will give more accurate repeatable results A smaller sample size will give faster tests Generally it is best to use a thin layer that just covers the surface of the pan Very light or very expensive test materials may requ
58. layed on a single screen a scroll bar will be displayed at the far right of the screen Available screens below and or above the current screen will be indicated by arrows on the scroll bar Press Selct to choose the option or move to the next menu level or press Esc to return to the previous menu level Page 27 6 2 Memory Start Menu MEMORY START MENU ADD EDIT MEMORY START REORDER MEMORY START DELETE MEMORY START The Memory Start Menu allows access to the stored test parameter sets This is where the contents of the stored parameters may be printed out or changed e Selecting any of the four options in the Memory Start Menu brings up the list of stored test parameter sets They are sequentially numbered from 000 to 251 e The first and second 000 ID WEIGHT and 001 ID TARTRATE are factory set in non volatile memory and cannot be changed e The last 251 ID CUSTOM can be changed through this menu or using the Param key at the Main Test Screen e The left most key is now labeled Line The Ln Up key will cause the highlight to ascend through the selections one at a time The Ln Dn key will descend through the selections one at a time e Pressing the Line key will cause this key to change to Page The Ln Up and Ln Dn keys change to Pg Up and Pg Dn They will now scroll through the selections seven lines or one display page at a time e Individual selections cannot be made in Page Mode Therefo
59. mage to the force balance Avoid excess pressure from the top or sides which can damage the force balance NOTE The Outside Shroud Gasket is not used in all applications and may not be included with your instrument Balance Cover Shroud Gasket Outside 300 0114 yx Notch for Balance Shroud Gasket Inside Gover Removal Somova 300 0114 under outside shroud gasket Page 12 Check the clearance between the pan support arms and the heat shield by observing the space between the arms and the shroud gasket The clearance should be about one millimeter or about the thickness of an American dime If the clearance is considerably different from one millimeter or the pan support appears to be crooked call AZI customer service or your technical sales representative at 1 800 528 7411 or 1 602 470 1414 Ensure the AC power receptacle 1s set for the correct voltage 110 or 230 VAC The MAX 2000XL will draw up to eight 8 amps Ensure the instrument is provided with its own DEDICATED and GROUNDED electrical power outlet Do not put it on a circuit with motors blenders heaters coolers grinders or other high current electrical devices 5 3 AC Power Connection The MAX 2000XL can be used with either 100 120 or 220 240 VAC Check the setting on the fuse holder located at the rear of the instrument for correct voltage 100 120 or 220 240 volts from your power receptacle To change from 110 to 220V
60. ments gt Close to an isolated power outlet that will provide dedicated electrical power and gt Away from the direct flow of a fan or heating air conditioning outlet that might produce force on the balance Please save the shipping box and all packaging materials for future use e Carefully unpack the instrument and locate the following items Part Name MAX 2000XL Accessory Kit Line Cord Varies with area Sample Pans Waffle Test Weights 3 grams 5 grams 20 grams Tweezers User s Manual Optional Accessories Printer Kit RS 232 Cable null modem for computer interface Temperature Calibration Kit Sample Pans Flat Filter Paper Outer Shroud Gasket Needed for testing at less than 0 5 moisture Shipping Container Nitrogen Purge Kit AZI Part Number MAX 2000XL MAX 2000XL 220V Y990 0157 USA Canada 200 0002 990 0008 690 0003 690 0004 690 0007 690 0012 700 0036 England 200 0003 Europe 200 0008 Y990 0098 6000 1044 300 0114 990 0010 990 0003 300 0114 751 0008 Y990 0046 Page 11 e Open the lid by lifting the handle just above the display e Remove the yellow tape pan support and packing foam e Save the foam so that it can be taped in place when the instrument is returned to the factory for annual calibration e Install the pan support gently but firmly into the instrument CAUTION Do not at any time attempt to spin the pan support as it may result in da
61. milligrams Page 32 The STANDARD LOW MOISTURE and ULTRA LOW MOISTURE options do check for balance drift caused by temperature changes and offer greater accuracy but at increased tare times In these three options the pan tare algorithm checks to ensure that the balance has drifted less than 0 3mg during a variable TARE TIME a few seconds to several minutes For example a pan tare using the ULTRA LOW MOISTURE option checks to ensure that the balance has drifted less than 0 3mg in the last 30 seconds after the tare command was issued to the balance This requires that the balance be tracked for the initial 30 seconds If the drift is excessive at the end of that time the balance is rechecked every six seconds and the value is compared against the previous 30 seconds of data until the 0 3mg criteria is met Depending upon the situation an ultra low moisture tare can take as long as three minutes The ULTRA LOW MOISTURE option should be used for samples with a moisture content between 0 005 and 0 2 percent This option may be used to improve accuracy for samples with moisture content in excess of 0 2 percent but will increase the overall testing time When the tare criteria have been successfully met the balance is re tared to zero and the unit beeps to indicate that it is ready for the sample to be loaded To select a PAN TARE OPTION move the highlight bar to the desired choice and press Selct To store the new selection press Es
62. ncluded because of heated air currents in the oven chamber that apply lift to the sample pan This causes a falsely high apparent weight loss If not compensated for this error leads to erroneous moisture values too high The amount of lift generated by the hot sample varies from sample to sample and increases with the test temperature In some cases the lift is approximately 10 milligrams and is small enough that less sensitive instruments do not provide compensation Because the MAX 2000XL can sense a weight change as small as 0 100 milligrams the lift must be compensated for when testing samples that have a total weight change smaller than the lift value Page 34 For example some plastic resins are controlled to a moisture content of 0 01 so for a 30 gram sample the weight change is only 3 milligrams Similarly some lyophilized drugs are so valuable that the sample weighs only 150 milligrams At 2 moisture the weight change is only 2 milligrams The MAX 2000XL automatic lift compensation factor is determined at the factory Each instrument 1s characterized for lift produced under standard conditions and for the way that lift changes for various test temperatures The factor 1s called the 100 lift compensation value Each sample material has a degree of similarity to the maximum lift sample and this is expressed as a percentage of the maximum lift This value is entered under LIFT COMP PCT lift compensation percentage Use 10
63. nd Tesvon Rate dla dias 31 D AAA A A 31 Sample Size OPU ONS ia 31 E Sample IZ it oh oenadel 31 E O e ae 32 gt Inside Limits and Outside Limits 0 0 ss00sssseeesennenensnnnnansonnnnnnsnennennseennsnensenneanseensenns 32 Tato CO PUGS rl lados 32 e Pan Tare OPINA te iS 32 E AA SPT cg ECR Tey cat ge nt a ee Oe er ee 33 Bp OPE CIAl ONON A daeeutad caseonatesuet cameedmnaebentenrau cuter 34 Result Display OPUS aida 34 DiC Oi fate Geese cate eee eae ee 34 Linked Tos OPUS tati 35 Ea A 36 Delete Memory Star do ST 36 PAn MEmMO di ii 36 STORED DATA Not available on 21 CFR Part II compliant instruments 00000000000000000000 37 VIEW OLA Dat o edo oooO 37 X Analyze Stored Dilase a a a a eee a A vacate a sce see sc ste ao rset aceaec ais 38 gt Delete Stored Data 2 0 cccccccccccccccccccccscccccccccacccauccecccesccescusccauccauccsccuscanceasceaces 38 6 4 CABIBRATION MEN Tor ts o dl td dad LE 38 gt Balance Cal Oral O a E E 38 gt Tempere C A cur satedsvun aun aeeteaeniats 39 6 5 SF FUP MENU crass Sa Seer dt o ed nn ates eiss 42 z PrN E oE UDa env taleie ET E E 42 gt REDO CUD ad T ae 42 gt REPO COMO LOODUS eere E E 42 gt Repo Hen AOP a RA 42 X AUMENTAN ds oda 43 a CES ta 43 gt Data Foma SUD 43 o gt Ending Criteria By 0 C2 ener ee eee eee 43 o gt Lot Number and O a a 43 BR ACCESSKEY SEUD pe A A E E 44 e FON Wy So MU SCU o OCC o II not vaet ees eaapuieneetneatees 44
64. nd commands entered into the instrument by way of keyboard operations as prompted by the display The entire set of commands and displays 1s accessible through a menu tree with each choice selected at the time of need by specific keystrokes The Main Test Screen which appears a few seconds after the instrument is powered up displays the current date time last test parameter set name last test result last elapsed test time and the idle temperature setpoint as shown below It is also the top of the menu tree and displays the name of the four functions selectable by the four arrow keys Current time date and time 05 05 2003 14 53 51 125 LAST ANA FINAL 24 864 MOISTURE TIME 02 13 TEST VOSS PRESS START MEMRY SELECTS PRESS MEMRY NEW PARAMETRS PRESS PARAM OK TT 125 Y Memry Menu Graph Param Graphics to show progress To select and change CUSTOM parameters quick To select another set To view test s graphical data Programed oven temperature Data from last test Current selected test Current measured weight Current oven temperature of stored test parameters To access Main Menu options e The left most selection is Memry and will switch the display to a list of stored test parameters Memory Starts e The next selection is Menu and will switch the display to the Main Menu from which most test parameters and functions are accessed e The next selection i
65. ns only Use of strong detergents and oven cleaners will damage the case and heater housing e Before using any cleaning or decontamination method except those recommended by Arizona Instrument check with AZI Customer Service at 1 602 470 1414 or 1 800 528 7411 to ensure that the proposed method will not damage the equipment e The outside housing of the MAX 2000XL Moisture Analyzer should be cleaned with a mild household detergent such as 409 and a soft lint free cloth Paper towels should never be used as they will scratch the instrument s finish and the clear lens over the display If methods that are more stringent are required call AZI Customer Service at 1 602 470 1414 or 1 800 528 7411 for recommendations e Every precaution has been taken to prevent contaminants from entering the unit However 1f liquids or powders do enter the case call AZI Customer Service at 1 602 470 1414 or 1 800 528 7411 for recommendations The user shall be liable and responsible for any damage that arises in connection with the use of this moisture analyzer Page 6 ENVIRONMENTAL CONDITIONS Storage and Shipping e Temperature should be between 0 C to 40 C 32 OF to 104 F e Relative Humidity should be between 10 and 80 OPERATIONAL CONDITIONS INDOOR USE e Optimum results will be achieved when the unit is set on a smooth level non vibrating surface in a non condensing non explosive environment of 0
66. okes are required to complete most tests gt Follow the steps as they appear on the screen and wait for the audible signal at the end of the test Page 14 e The four arrow keys 4 gt A V are OFF used to navigate through the menu system and LAST to respond to prompts on the screen The FINAL 46 804 MOISTURE function of the key appears above the key As TINE 40 48 an example the name Param above the V TEST UAEM FRESS START in changes to Quit during tests This MEMRY SELECTS PRESS MEMRY ae NEW PARAMETRS PRESS PARAM indicates that the test will be terminated and Fa 06 65606 aos computations canceled when the key 1s pressed Menry Menu Graph Paran e When using the menu system to change a EDIT TEST PARAMETERS numeric value such as a name or temperature SAMPLE MAME TEMPERATURES gt Use lt and P to select the character ENDING CRITERIA position to be changed SAMPLE SIZE OPTIONS gt Use the ak dIVV toi d TARE OPTIONS se the A and Y to increase or decrease RESULT DISPLAY OPTIONS the character in the selected position LIFT COMP PCT Quit Right Incr Decr e The alphanumeric digit place can contain one of 12 symbols in addition to the alphabet and the EDIT TEST PARAMETERS numbers 0 to 9 Pressing Incr starts at A and SAMPLE NAME 12345673 continues through the alphabet the symbols then ENDING AR TIERI the numbers Pressing Decr first starts at the AE ERNS n
67. oving the shroud Lightly spray the shroud with cleaning solution and allow it to stand for several minutes Scrub with the stiff bristle brush Repeat if necessary to remove layers of accumulated buildup Rinse under warm water and dry Prepare the heater element enclosure by placing paper towels around the elements Lightly spray the front face of the heater box and allow to stand or alternately spray a damp cloth or paper towel with cleaner and clean the heater box Use a small brush or cotton swab Q Tip to remove excess buildup Dry the front of the heater with paper towels or damp cloth until clean Allow heater elements and enclosure to dry for at least 15 minutes to ensure that they are completely dry Re assemble heater and correctly position the RTD using the marks made with the permanent marker Remove the masking tape from the hole in the chamber floor and carefully install the pan support and pan Run a weight test to verify that the unit 1s functioning correctly see page 18 Ifa temperature calibration interface kit is available perform a temperature calibration after cleaning Page 57 The sample pan support may need to be cleaned if high volatile material condenses on it Turn the unit off and use the supplied tweezers to remove the pan support up out of the test chamber Remove the pan support carefully and clean it by wiping with a tissue or paper towel Page 58 14 TROUBLE MESSAGES Messages appear on t
68. plays appear turn the unit off and clean out any debris found beneath the pan support Reassemble the parts and be sure that no mechanical interference is present It may be necessary to calibrate the balance see page 17 If these measures fail to restore normal function call AZI customer service at 1 800 528 7411 or 1 602 470 1414 for assistance The internal balance weight reading is always visible at the bottom of the screen when in the operating mode Page 24 e While loading the sample the weight is LOAD SAMPLE displayed in grams at the bottom of the screen and on a horizontal bar at the top The target weight 1s entered under 24 aA 9 6 SAMPLE SIZE OPTIONS Add the sample CLOSE THE LID TO START TEST so that the solid bar is at or near the target E H8 HHH y weight and the instrument produces audible beeps e Close the lid to begin the test e While a test is in progress the horizontal bar is not displayed Only the weight in grams 1s displayed at the bottom center of the screen shown as 08 0000 grams gt To load difficult samples more easily remove the sample pan from the instrument after the correct amount of sample has been placed on the pan and place the filled pan on a level work surface Spread the sample with a small flat brush or spatula depending on the consistency of the sample gt Replace the loaded sample pan on the pan support and close the cover e To determine analyzer performance on a new pro
69. plied accessories and options with the MAX 2000XL Moisture Analyzer or check with AZI before using any third party accessories such as printers and analytical balances to verify compatibility e If there is visible damage to the MAX 2000XL Moisture Analyzer or its power cord unplug and isolate the unit first and then call AZI Customer Service at 1 602 470 1414 e Do not open the analyzer housing of the MAX 2000XL Moisture Analyzer There are no user serviceable parts or adjustments inside the unit Any maintenance inside the unit is to be performed by factory trained technicians only Any unauthorized inspection and or maintenance of the MAX 2000XL Moisture Analyzer will void the warranty Prevent excess heat build up around the analyzer e When setting up the MAX 2000XL leave enough space to prevent heat from building up and to keep your analyzer from over heating Leave 20 cm about 8 inches around the moisture analyzer and 1 meter about 3 ft above the unit e Do not put any flammable substances on under or around the moisture analyzer e Use extreme care when handling the used sample pan when removing it from the unit Although the pans cool rapidly they are still very hot when the lid is first opened after a test HAZARDS FOR PERSONS OR EQUIPMENT POSED BY USING SPECIFIC SAMPLES Flammables explosives substances that contain flammables explosives solvents and or substances that release flammable or explosive gases or
70. re to scroll one line at a time turn Page Mode off by pressing the Page PRINT MEMORY STARTS Select ADD EDIT MEMORY START ID WEIGHT ID TARTRATE D Line Esc Select Ln Up Ln Dn ID ID CUSTOM Line Esc Selct Ln Up Ln Dn e With Page Mode turned off again the Ln Up and Ln Dn prompts reappear over the respective keys and individual selections may be made gt Add Edit Memory Start Used to create or alter a stored set of test parameters The seven options parameters available at each memory start selection are discussed in the following paragraphs Once a selection is made follow the displayed screen prompts to complete the editing process Refer to page 5 4 1f necessary gt Sample Name ADD EDIT MEMORY STARI ID WEIGHT ID TARTRATE D Selct Ln Up Ln Dn An eight 8 place alphanumeric identification for the test Each ID location will be blank when first opened Edit the value to any desired name or number to identify the product under test Page 28 gt Temperatures TEMPERATURES The three possible temperature parameters used TEST TEMPERATURE 160 C during a test TEST HISTART TEMP 25 C IDLE TEMPERATURE H25 C Test Temperature START TEMP CONTROL OFF The current temperature setpoint 1s displayed after TEST TEMPERATURE Press Edit and the cursor will be positioned at the first most significant digit Use the up or down arrows to increase or decrease the digit value
71. re test the taring of an empty sample pan Temperature fluctuations occur across the balance and are dependent on a number of different criteria such as previous test setpoint temperature the amount of cool down time between tests and the current idle temperature This temperature fluctuation causes the balance to drift during and after the sample pan tare and is reflected as error in the final moisture value Since the conditions that cause the temperature fluctuation across the balance are not always constant this error often appears as a higher standard deviation for a series of tests on a particular sample Esc Select The Pan Tare Option offers the user four mutually exclusive selections to adjust the relationship between tare time and tare error to improve overall operation for a given product or purpose The following table summarizes the menu choices and the parameters associated with each choice MENU INITIAL TARE POTENTIAL POTENTIAL CHOICE TIME DRIFT ERROR TARE TIME FAST up to 20 mg 6 seconds STANDARD 1 0 to 2 0 mg UP to 60 seconds LOW MOISTURE less than 1 0 mg UP to 2 minutes ULTRA LOW 30 seconds less than 0 3 mg UP to 3 minutes MOISTURE The FAST tare option as the name implies is the fastest If this option is selected the MAX 2000XL zeros the balance waits six seconds and records the balance reading as tare weight There is no check for balance drift This option could cause the ending error to be as great as 20
72. rect port selection is displayed press the Accpt key to lock the selection into the MAX 2000XL parameters e Move the select bar to AUTO FORM FEED and press the Toggle key to select between OFF and ON When the correct selection is displayed press the Esc key two times to return to the MAIN TEST SCREEN NOTE Selection will depend on the printer used Try Auto Form Feed ON for most printers If the printer seems to waste paper switch it to OFF e With the MAIN TEST SCREEN displayed press the Menu key to display the MAIN MENU Go down to the SETUP menu and press Selct Highlight REPORT SETUP and press Selct again With REPORT CONTROL OPTIONS highlighted press Selct again e With REPORT ENABLED highlighted press the Toggle key to select between YES and NO Select YES to send the test results to the printer and NO to stop results from being sent to the printer e Highlight REPORT START and press Edit Press Incr or Decr as necessary to select either START TEST Ist PRED first prediction or TEST END Page 21 e Highlight REPORT INTERVAL and press Edit Press Incr or Decr to select an interval between the minimum of 02 seconds and the maximum of 99 seconds Press the Accept key to lock the selection into the MAX 2000XL parameters e Highlight INCLUDE GRAPH and toggle the NO to a YES if you have the LPT output port only selected and want to print the graphic plot of weight and moisture loss for a test
73. rm feed is desired If the port option of Both is selected the data will be sent to the computer serial port and the parallel printer port gt Report Setup This menu allows for the program settings related to the final printout of a test Itis in this menu that the printer is enabled and the printout is customized to your needs gt Report Control Options This screen controls output to the printer and the RS 232 port It also controls how often the instrument sends data gt Report Enabled Select YES to enable reports or NO to disable reports gt Report Start START TEST reporting will begin as soon as the sample tare is complete Ist PRED reporting will begin when the first prediction is made TEST END reporting is delay until the test ends and real time data will not be printed during the test gt Report Interval Minimum of 02 seconds to the maximum of 99 seconds between reports gt Include Graph Print the graph YES or NO A graphics capable printer is required if YES is selected There is no RS 232 output to the computer gt Report Items to Print For MAX 2000XL instruments that are not 21 CFR Part 11 compliant 122 test results with their test parameters can be stored in memory These results are available for printing or statistical analysis mean standard deviation and coefficient of variation MEMORY SELCT Number of the memory start parameter set for this test SAMPLE NAME Identificat
74. roper application modifications or service performed by persons other than AZI s own service representatives power surges or spikes negligence in use maintenance storage transportation or handling or an act of God If a MAX product is defective in workmanship or materials the owner s sole remedy shall be repair or replacement of the defective part or parts as provided above Under no circumstances shall AZI be liable in any way to the owner or any user for any damage including but not limited to any loss of business or profits or any other direct indirect special incidental or consequential damages whether or not foreseeable and whether or not based on breach of warranty contract or negligence in connection with the sale of such products Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitations or exclusions may not apply to you No other warranty is expressed or implied including the warranties of merchantability or fitness for a particular purpose In no event shall AZI be liable for consequential and or incidental damages The effective warranty begins on the date of purchase by or lease to the first end user owner Keep the dated bill of sale or invoice for evidence of the effective warranty date when warranty service 1s requested In the event that any questions or problems should arise in the use or application of your Computrac MAX 2000XL unit call AZI C
75. s should maintain moisture levels for long periods Routine testing of these samples should produce the same results day after day Retained samples further verify the unit s operation on the customer s own product If hygroscopic materials are used the values can change with time and repeated opening of the container e Let the system warm up for 20 minutes e Set the MAX 2000XL to the optimum test temperature for the retained sample or use the ID Number of a test that has been stored in memory e Place a clean aluminum sample pan onto the pan support in the test chamber e Close the lid and press START e When the OPEN LID display appears GENTLY add the optimum amount of retained sample evenly across the sample pan e Close the lid and allow the test to continue e Record the final result in the quality control log e The results for the retained sample should fall within the established acceptable range of results for that sample If results are out of range repeat the test to verify results and or perform standard reference testing to certify the percent moisture value Page 55 13 ROUTINE MAINTENANCE The MAX 2000XL requires routine cleaning to keep the test chamber free of excess sample material Failure to keep the instrument interior clean reduces its accuracy and repeatability Sample material collecting in the test chamber prevents free movement of the pan support Also sample material collecting on the heater shroud pre
76. s Graph and will change the display to a graph of the moisture content of the sample as a function of elapsed test time e The right most selection is Param and allows the parameters of the Memory Start Test at ID 251 CUSTOM to be changed quickly between tests If access code control 1s active edits to some components of the menu system will bring up a message asking for the access code For more information on the access code see Access Key Setup on page 44 Page 26 6 1 MAIN MENU At the Main Test Screen pressing the Menu button will MAIN MENU On display the four top level selections of the menu system l STORED DATA MENU MEMORY START MENU 1s used to make CALIBRATION MENU changes to Memory Start stored parameter sets STORED DATA MENU is used to view analyze print and or delete data from past moisture Y Esc Selct determinations CALIBRATION MENU is used to perform balance and heater calibrations SETUP MENU SETUP MENU is used to enter and or edit instrument default parameters for the printer reports internal clock data format and the access key or codes used to control parameter change access The four arrow keys lt 4 P A and V are used to navigate through the menu system and to respond to prompts on the screen To select a menu item move the selector bar up or down the displayed list to the desired function using the A or W arrow keys If the list is longer than can be disp
77. select the data items to be included in the analysis designating the selected items with Selct Notice that each selected item is marked with a triangular symbol at the left of the data item If one has been designated in error move the selector bar to it and press Dslct to deselect and unmark it When all desired items are selected press Calc The screen will immediately display the number of samples mean standard deviation and coefficient of variation of the selected data set Below is an example of an ANALYZE STORED DATA calculation report This report can be printed by pressing Print To return to the previous menu press Esc SAMPLES 005 MEAN AVG 23 593 STD DEV 0 0569 CV 00 21 Page 37 gt Print Stored Data Stored data can be printed to a parallel printer attached to the MAX 2000XL That same data can also be routed to a computer Note that up to 122 samples can be stored before the oldest is pushed out overwritten Also note only data can be retrieved from storage since graphs are not stored Graphs can only be printed at the end of the test provided the INCLUDE GRAPH feature is enabled under the REPORT CONTROL OPTIONS see page 42 To print stored data select that option on the STORED DATA MENU and press Select gt Delete Stored Data This function is used delete individual results and is nonreversible Normally results are deleted to make management of the data easier and to make room for new tests
78. st chamber As the sample heats and loses weight due to moisture evaporation the balance records that weight loss and transmits the data to the microprocessor The microprocessor interprets the information and compares the sample s weight loss to a standard drying curve The final moisture concentration is extrapolated from the curve and results are available within minutes A typical drying curve 1s shown at the right e Section A B represents the sample s weight loss as it heats from room to testing temperature e Section B C is linear representing moisture loss from the interior of each particle of the tested sample e Section C D is exponential in nature Time and represents the final evolution of Typical Loss On Drying Curve moisture from within the particle The point at which no additional weight loss occurs represents the complete evolution of water from the original sample E e Section D E is the longest and most time consuming portion of the entire testing process The time for a sample to reach zero residual moisture in an oven can take from one to possibly 24 hours depending upon the sample sample preparation and testing temperature The MAX 2000XL loss on drying system calculates the sample s moisture concentration through mathematical extrapolation from the exponential C D portion of the curve Weight Reading and Moisture Content An aluminum pan sits on a pan support coupled to a sensitive electronic force balance
79. t 20 grams 30 character 9 row LCD with back light text or graphic test display Continuous text or graphic display of test time current temperature programmed test temperature and current sample weight and calculated weight loss RS 232 9 pin standard serial port and bidirectional parallel printer port 25 pin standard 0 005 to 100 moisture 0 002 standard deviation depending upon program Menu driven through LCD display Storage of up to 122 test results and up to 249 different test parameters plus 2 quality test programs weight test and tartrate Page 63 FEATURE Statistical Calculation Access Code Results Display Ending Criteria Programmable Features Certifications Page 64 SPECIFICATION Mean standard deviation and coefficient of variation Two user selectable codes up to eight 8 digits in length One master code and one calibration code no limits to access on memory starts one universal code for factory use and override Moisture solids or dry weight Predict both automatic and manual Rate from 0 001 minute to 9 999 minute Time from 001 to 999 minutes Sample name Lot number or product ID Balance and temperature calibration prompts Linked tests for multiple test parameters without opening the lid Syringe and foil tare operation for precise test start weights US and Canadian Underwriters Laboratory European Communities CE Arizona Instrument LLC 1s an ISO 9001 registered
80. tall the air diffuser and seal supplied with the Nitrogen Purge Kit into the opening created by removing the plug e Close the heater lid e From the back of the unit remove the plug located in the upper left corner as viewed from the rear of the heater lid e Install the 007 orifice fitting it has the green insert supplied with the Nitrogen Purge Kit into the opening created when the plug was removed e From the back of the unit remove the plug from the lower portion of the unit e Install the 012 orifice fitting it has the black insert supplied with the Nitrogen Purge Kit into the opening created when the plug was removed e Connect the regulator to the gas source cylinder per the regulator manufacturer s instructions e Use tubing to connect the outlet of the regulator to the Y connector supplied with the Nitrogen Purge Kit e Connect tubing from the Y connector s two outlets to the fittings on the rear of the unit e Check that all fittings are gas tight and secure Pressure should be deferred until the start of a test to conserve gas use Flow rates will be sufficient with the pressure set to between 4 and 5 psi Regulator Y Connector Cylinder Shut off Valve Page 20 An optional graphic capable printer is available from AZI pictured is printer example only It connects to the printer port at the rear of the instrument The content and time of printing for each message can be cus
81. the set value after equilibrium is reached The 700 watt heater reaches equilibrium in 90 to 180 seconds depending on the difference between the starting and setpoint temperatures Closed loop feedback control assures a constant temperature even if power line voltage varies during the test The heating system is automatically turned off when the test is completed Open the lid to speed cooling before performing the next test if needed Page 10 5 INSTRUMENT SETUP Call AZI customer service or your technical sales representative at 1 800 528 7411 or 1 602 470 1414 if you have any questions about the following instructions You may also contact customer service by e mail at support azic com Updated revisions to this manual are available at the AZI web site Log onto http www azic com and click Products then Computrac and scroll down for a list of available manuals For those familiar with moisture analysis instruments the MAX 2000XL should be simple to operate Section 5 on page 11 gives the instrument setup and calibration instructions for those who have used Computrac instruments before Section 6 on page 26 describes the instruments menus and how to select options If you are unfamiliar with this technology please read all of the sections in this manual before attempting 5 1 Instrument Location e Select a location for the instrument that 1s gt Firm and level gt Free from vibration that will affect the balance measure
82. thin a range of 40 1 of the assayed value on the label of the chemical Sodium Tartrate assayed moistures typically range from 15 61 15 71 From the Main Test Screen press Memry Highlight 01 ID TARTRATE Press START key When the OPEN THE LID prompt appears on the screen open the lid and carefully place a new clean sample pan on the pan support Close the lid and allow the unit to tare When the OPEN THE LID prompt appears on the screen again open the lid and gently and evenly shake sodium tartrate over the surface of the sample pan until the display shows that 7 9 to 8 1 grams of sample are loaded Close the lid and the test will begin Wait for the end of test signal If this 1s the first test of the day discard the results of this test for stability reasons Results should be within a range of 0 1 of the assayed value on the bottle label Page 53 12 4 Precision Tartrate Test e Perform five sodium Tartrate tests If this is a 21 CFR Part 11 compliant instrument all readings must be recorded by hand AZI recommends using a printer to capture the values The calculations must be performed on a calculator since the instrument s storage and analysis functions are disabled Mean Standard Deviation and Coefficient of Variation are calculated using the following formulas gt Mean total of results divided by number of results ae 2 gt Standard Deviation ae n gt Coefficient
83. thod results Repeated testing should be done at temperatures in this range Several tests are performed using the same sample size and test parameters Results from these repeated tests are tabulated to calculate the mean or average and the standard deviation S D Analysis of the mean and standard deviation and their comparison with reference method results determines that the proper test temperature has been used If mean values do not compare well or if the standard deviation is too large test at another temperature along the plateau Page 49 11 2 Selection of Ending Criteria The decision of which ending criteria to use 1s application dependent Best results are typically given with the PREDICTION or RATE rather than TIME Experiment with your particular sample to determine which criterion is best for your product For END TEST ON PREDICTION the MAX 2000XL uses a sample dependent test to automatically end a test The test called the reliability criterion 1s equal to one minus the ratio between the actual weight loss at a given moment and the end point predicted by the microprocessor The ratio can be set to a value from 00 to 99 depending on the user s desire to balance speed and accuracy The smaller the number the sooner each test will end A value of 99 means the actual weight loss must exceed 99 of the predicted end point For END TEST ON RATE the MAX 2000XL ends the test when the sample weight loss rate has fallen below
84. tion Call AZI at 1 800 528 7411 or 1 602 470 1414 for assistance A D TIMEOUT Message generated if A D does not clear in 100mS Probable causes Bad A D Bad A D timing circuit Call AZI at 1 800 528 7411 or 1 602 470 1414 for assistance INTERRUPT Something caused the system to crash and reset STARTUP Probable cause RAM corruption of some kind Call AZI at 1 800 528 7411 or 1 602 470 1414 for assistance Page 59 15 TROUBLE DIAGNOSIS Answer always zero Pan support height incorrect Adjust pan support height see page 12 or call AZI at 1 800 528 7411 or 1 602 470 1414 for assistance Temperature too low Raise temperature see pages 29 amp 49 See No Heat symptom later in table Sample too small Increase sample size see pages 31 amp 51 Lift compensation too large Reduce lift comp pct see page 34 Determine temperature ending criteria to use or call AZI at 1 Answers vary too Test temperature incorrect much Ending criteria incorrect 800 528 7411 or 1 602 470 1414 for assistance Sample size too small Increase sample size see pages 31 amp 51 Samples not uniform Grind sample Sample particles too large see page 50 Blank display or very Contrast controls not set Adjust contrast hard to see see page 14 No power Check power cord connections see page 13 Microprocessor failure Turn unit OFF and back ON Call AZI at 1 800 528 7411 or 1 602 470 1414 for assistance
85. tion Interface TCI box Plug the RS 232 interface cable into the matching connectors on the cal box and on the back of the MAX 2000XL Plug the AC adaptor into a 110 VAC outlet e Turn the MAX 2000XL ON From the Main Test Screen press Menu to bring up the MAIN MENU Toggle down if necessary so that CALIBRATION MENU 1s highlighted press Selct At the CALIBRATION MENU toggle down until TEMP CALIBRATION MENU is highlighted press Select e Inthe TEMPERATURE CALIBRATION MENU highlight VERIFICATION SETUP and press Selct gt The purpose of the verification function is to confirm VERIFICATION SETUP whether the calibration was successful or not at a given AUTO UERIEY YES at VERIFY PTS B4 set of temperatures The verification process can be Annio Tas aoe run automatically following the calibration by selecting YES at the AUTO VERIFY prompt TENE EAC omen 1 gt The rest of these instructions assume that the Esc TEdit Ln Up Ln Dn verification is being run automatically AUTO VERIFY YES e The pass fail criteria may be changed by selecting and VERIFICATION SETUP editing the value of ADDITIONAL TOL to increase the AUTO UERIFY YES l VERIFY PTS B4 listed values shown The verification will then give a pass fail indication at the end of the test based upon the TEMP 2 120 C 30C adjusted tolerance The example at right shows the result TEMP 4 200 C 40 of changing the ADDITIONAL TOL value to 2 Esc Edit Ln
86. tly to a personal computer e Be printed on many graphics capable printers and may include a printed graphical representation of the drying process Page 9 4 INSTRUMENT DESCRIPTION The MAX 2000XL consists of a small convection air oven a weighing mechanism with a resolution of 0 1 milligrams and a full scale range of 40 grams and a backlit graphic Liquid Crystal Display LCD A microprocessor controls the test process data handling communica tions and performs all necessary calculations A small fan in the lower chassis maintains the electronics at a stable low temperature Connectors for a printer and serial communications devices are provided at the back The power input module can be set for either 100 120 volts or 220 240 volts see page 13 The MAX 2000XL is designed to remain powered up at all times When it is not in use keep the lid down The light behind the LCD will turn off after a period of inactivity to conserve energy The display is visible but appears very dim Press any key to restore the backlight to illuminate the LCD 4 2 Heating System The sample heating system is designed to remove volatile components from the sample as quickly as possible while maintaining accurate temperature control to prevent sample degradation Oven temperature is measured with a Resistance Temperature Device RTD mounted in a rugged metal tube to prevent damage and dislocation Temperature control accuracy is within one degree of
87. tom configured from the menu system These same messages can be directed to a computer through the RS 232 serial port at the back of the instrument e Unpack the printer cable and paper Install the paper according to the instructions in the printer manual Plug the large end cable connector into its mating socket on the printer and the small end into its mating socket on the back of the MAX 2000XL Plug the power cord into the printer and into a GROUNDED power receptacle e Turn the printer power on On some older printers it is also necessary to place the printer On Line NOTE If the printer is supplied with the MAX 2000XL from AZI the unit is already programmed If the printer is obtained from another source refer to its manual for programming information e To set up the MAX 2000XL begin at the OPENING MENU and press Menu Press the Down key until SETUP MENU 1s highlighted and press Selct e Highlight PRINTER TYPE and press Edit to allow the selection to be changed Press Incr or Decr to change the selection between available types When the correct type is displayed press the Accpt key to lock the selection into the MAX 2000XL parameters e Move the select bar to OUTPUT PORT and press Edit to allow the selection to be changed Press Incr or Decr to change the selection between LPT for printer only RS 232 for Computer only and Both for the printer and computer at the same time When the cor
88. trument To display this information turn the power off wait a a second and turn 1t on again Observe the o front panel The program version number will be displayed in the lower center portion of the screen for about five seconds Page 46 10 2 Diagnostic Failure Messages The MAX 2000XL contains extensive diagnostic software which monitors the performance of the instrument If a dangerous or abnormal condition is detected the instrument turns off power to the heater ends operations locks the keyboard and displays the following message SYSTEM ERROR A brief description of the problem Software Halted Power off on to reset Record the error message and turn the power switch to OFF Wait ten seconds and turn the power switch back ON If cycling the power switch does not clear the error stop using the instrument and call AZI Customer Service at 1 800 528 7411 or 1 602 470 1414 Page 47 11 PERFORMANCE ENHANCEMENT The information presented here is general in nature Specific information directed at the chemical foods plastics forest service and gypsum industries can be found in product related documents The Computrac MAX Series loss on drying moisture analysis system takes advantage of computer technology to reduce test times and increase precision over standard vacuum oven or convection oven drying procedures The sample is added to an aluminum sample pan sitting atop an electronic force balance within a te
89. umbers then symbols and finally the alphabet RESULT DISPLAY OPTIONS LIFT COMP PCT e When the changes are completed move the cursor Left Quit liner Decr off the end of the entry either to the left or right to Quit the edit mode e Use the A to accept or the V to cancel the EDIT TEST PARAMETERS 8 SAMPLE NAME 12345678 TEMPERATURES NOTE Prompts to remind the user of key functions are HEEE ONE always displayed above the keys and change as necessar TARE OPTIONS y pray y 8 y RESULT DISPLAY OPTIONS throughout the menu system LIFT COMP PCT lAccpt Canc 1 Page 15 5 5 Setting Calibration Prompts There are prompts available to remind you when scheduled calibrations are due The default factory settings are gt gt gt To select the Balance Calibration Prompt gt Vv yY vv To setup the Temperature Calibration Prompt v Y Y VY Prompt Enable ON Start Date Factory Calibration Date Prompt Time 07 00 and Interval 04 Weeks SETUP BALANCE CAL PROMPT Select in order Menu Calibration Menu PROMPT ENABLE OH Balance Calibration and Setup Balance Cal START DATE 186 221 2082 Prompt PROMPT TIME 67 88 INTERVAL 64 Week Toggle the Prompt Enable to OFF or ON GeEks Edit the Start Date to the desired date to begin prompt intervals Left Edit the Prompt Time to the time of day the prompt is to be activated usually the start of shift work time Edit the Interval to indi
90. ustomer Service or your technical sales representative at 1 800 528 7411 or 1 602 470 1414 Page 68 20 MAINTENANCE CONTRACT Arizona Instrument LLC has a high level of confidence in the reliability of the MAX Our sophisticated circuits advanced design and manufacturing techniques result in a unit that performs reliably over an extended period To demonstrate our confidence we offer an extended warranty maintenance contract For a nominal annual charge AZI will exchange any subassembly or repair any unit at the factory which fails through no fault of the user This exchange or repair is on a no charge basis except for freight Contact AZI and ask for the Maintenance Contract Sales Representative TRADEMARK AND COPYRIGHT PROTECTION Copyright 2002 Arizona Instrument LLC All rights reserved Computrac Computrac Arizona Instrument AZI and the stylized AZI are registered trademarks of Arizona Instrument LLC MAX 2000XL is a trademark of Arizona Instrument LLC Tygon is a registered trademark of the Norton Company ARIZONA INSTRUMENT LLC COMPUTRAC DIVISION COMPUTRAC MAX 2000XL MOISTURE ANALYZER USER S MANUAL If you have any questions regarding the operation of this instrument please call our toll free number 1 800 528 7411 Internationally call 1 602 470 1414 or FAX 1 480 804 0656 Arizona Instrument LLC 3375 N Delaware St Chandler AZ 85225 USA 602 470 1414 800 528 7411 FAX 480 804 0656 http www
91. vapors during the drying process e If flammable or explosive liquids are tested the gases escaping from the unit are still dangerous when they are exposed to the atmosphere Fume hoods may offer partial protection but the potential danger will still be present The user shall be liable and responsible for any damage that arises in connection with the MAX 2000XL Moisture Analyzer and potentially harmful substances e Substances containing toxic caustic or corrosive substances may be analyzed with the unit in an appropriate fume hood only The fume hood must keep the work area below the lower toxic limit established by appropriate standards Page 5 e Substances that release caustic vapors such as acids should be analyzed in the smallest sample size possible to still achieve satisfactory results If vapors condense on the MAX 2000XL Moisture Analyzer s housing parts stop the testing wipe the surface clean with a suitable neutralizer and place the unit in a fume hood capable of removing the vapors The instrument is composed of powder coated aluminum anodized aluminum and some brass fittings Check for compatibility of substances to be tested before inserting them into the instrument e The user has the responsibility for carrying out appropriate decontamination if hazardous material is spilt on or inside the MAX 2000XL Moisture Analyzer CLEANING e Clean the MAX 2000XL Moisture Analyzer according to the cleaning instructio
92. vents the lid from closing completely causing erratic moisture results Material may fall into the system s interior causing balance problems Routine cleaning of the test chamber reduces the possibility of problems and repairs extending the life of the instrument 13 1 Chamber Interior The chamber interior needs to be cleaned when needed to eliminate the buildup of sample material Switch the main power switch off and use a vacuum line portable vacuum cleaner or a small paint brush to remove debris from the chamber A compressed air line or canned air is not recommended since debris migrates into the system s interior and settles in the electronic components 13 2 Heater Cleaning Perform a heater cleaning only if a Temperature Calibration Kit AZI p n Y990 0156 is available If not contact AZI Customer Service at 1 800 528 7411 to arrange for the instrument s return to the factory for cleaning and calibration An oven cleaner such as Easy Off should not be used on the aluminum shroud as it is corrosive and will remove the coating and pit the aluminum Cleaning frequency will vary depending on the application and frequency of use We recommend that you establish a periodic cleaning schedule to ensure unit to unit correlation and performance Call AZI Customer Service at 1 800 528 7411 or 1 602 470 1414 if you have any questions Testing of some materials may cause a brown discoloration behind the heater and on t
93. weight Wait for the end of the test If this is the first test of the day discard the results of this test for stability reasons Record the final result The value should fall between 37 480 and 37 520 YYY VV WV VV WV Page 18 CAUTION Use of nitrogen or other inert carrier gas does not create an explosion proof system Some applications may require the use of a nitrogen purge to remove volatiles from the chamber e In addition to the Nitrogen Purge Kit the following materials will be required for the nitrogen purge setup gt Nitrogen source cylinder or other supplied inert gas source gt Two stage regulator capable of regulating pressure to 5 psi gt For cylinder applications Multi stage Gas Regulator for Compressed Air Cylinder VWR 55850 150 55850 155 or equivalent or Matheson Gas Products Brass Dual Stage Regulator model 8L or equivalent gt For supplied gas sources Matheson Gas Products Model 3471 Single Stage Line Regulator or equivalent gt Tubing with a 1 8 31 cm inside diameter 1 D and 1 4 625 cm outside diameter O D Vinyl tubing VWR 63013 029 or Nalgene clear plastic tubing Nalgene 8000 0020 VWR 63015 368 gt Connector 1 8 I D 1 4 O D Remove plug and install air diffuser inside Remove plugs and install 007 and 012 orifice fittings outside e Open the lid e Remove the plug which is centered in the heater ring Page 19 e Ins

(Computrac) MAX® 2000XL User`s

Contents

Download Pdf Manuals

Related Search

Related Contents

(Computrac) MAX&reg; 2000XL User`s

Contents

Download Pdf Manuals

Related Search

Related Contents

(Computrac) MAX® 2000XL User`s