(Computrac) 3000 Block1 User`s Manual256265
Contents
1.2. Figure 16 Main Test Screen The Graph key can be used to switch the display to the graphical displays When Graph is pressed the Total Moisture Graph appears and the name above the arrow button changes to Next When Next is pressed the graph changes to display the rate at which moisture is passing over the sensor Pressing Next will now toggle between the two graphs To return to this Main Test Screen press Esc Page 21 of 51 5 Pressing Menu brings up a screen see Menu Overview Screen below showing the following options e MEMORY START MENU e STORED DATA MENU e CALIBRATION MENU e SETUP MENU e DIAGNOSTIC MENU MEMORY START MENU MAIN MEHU _ SS Uan ADD EDIT MEMORY START MEMORY START MEHU ORDER MEMORY START STORED DATA MENU PRINT MEMORY STARTS CALIBRATION MENU SETUP MENU DIAGNOSTIC STORED DATA MENU VIEW STORED DATA ANALYZE STORED DATA REORDER STORED DATA DELETE STORED DATA Esc Selct Down CALIBRATION MENU PERFORM RH SENSOR CAL DIAGNOSTIC MENU EDIT SYSTEM CAL CONSTANTS UIEW SYSTEM SENSOR STATUS MANUAL FLOW CONTROL MENU SETUP MENU UIEW SYSTEM EXCEPTIONS PRINT EXCEPTION REPORT CLOCK SETUP EXT BALANCE SETUP EXT PRINTER SETUP REPORT SETUP ACCESS KEY SETUP SEPTUM RECORD SETUP Esc Selct Down Figure 17 Main Menu Selections 6 Use the Aand arrow keys to scroll through the selections and the and gt arro
3. LM FSG i 4 ma instrument LLC USER MANUAL COMPUTRAC VAPOR PRO 3000 MOISTURE ANALYZER OPERATION MANUAL Firmware Rev 1 002 February 1998 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 intl 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 0012 C1 Last update February 1998 Computrac 3000 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 can 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 ALL RIGHTS RESERVED Copyright 1998 Arizona Instrument LLC Page 2 of 51 Table of Contents INERODUCTION seinen cd coin teed ek Gane oa Se ed a ees Page 4 of 57 PRINCIPLES of OPERATION 00 0 e eee eee eee eens Page 5 of 57 UNPA KINS oia E a N Ea agen cscs E eae EC Page 6 of 57 IWE TALEA TION 2733 ea a A ahh a a Page 7 of 57 Check Sensor Status 0 0 0 eee a i Page 9
4. Rapidly press the plunger down and gt Remove the syringe NOTE EACH TEST WILL TAKE ABOUT TWO 2 MINUTES Page 13 of 51 6 When the instrument again indicates READY TO TEST perform steps 3 through 5 at least four 4 more times for a total of five 5 valid results within 10ug of each other 7 When the five tests results are available press Esc several times until the Main Test Screen appears 8 Select the Stored Data Menu 9 Select View Stored Data e Delete those test which are out of limit due to poor syringe technique e Delete any tests not of this test cycle e Press Esc to return to the Stored Data Menu 10 Select Analyze Stored Data and review each test e Valid tests should be within 10 pgrams of each other e Select the five closest results At least five 5 valid tests are required for the proper analysis and correction factors to be calculated If five valid results are not available repeat the tests until they are available 11 Depress STAT e Review the results of the calculation Standard Deviation should be less than 10 e Coefficient of Variation should be less than 2 12 Select Calibration Menu 13 Select Perform Calibration 14 The result screen will look similar to the sample at left Number of Tests e Press the Accept Key to store these new Average results into memory Standard Deviation Coefficient of Variance Sample Calibration Display 15 The new calibration nu
5. Principles of Operation The COMPUTRAC 3000 heats a sample of test material in a septum bottle Evolved volatiles are passed through a cold trap filter to an analysis cell where the moisture content of the flowing gas is measured A microprocessor integrates the varying moisture signal and converts the signal to micrograms of water for display Results are available in parts per million percent moisture or total micrograms of water Arizona Instrument s innovative prediction algorithm automatically terminates the test in just minutes when sufficient information is collected to allow accurate determination of the sample s moisture content The heating range of the COMPUTRAC 3000 is 25 C to 275 C Test parameters such as sample size heater temperature and test ending criteria can be altered to optimize speed and accuracy Performance Designed for either lab or production floor use the COMPUTRAC 3000 Moisture Analyzer uses patented state of the art technology specifically designed to provide accurate and precise results in a timely manner This ensures that product quality is achieved and maintained The Computrac 3000 stores programed memory settings for up to seven materials and retains the data from the last 30 sample test runs The software automatically calculates the statistics of any selected stored data upon demand All retained test data can be automatically sent to an external printer or personal computer at the end of a test or on requ
6. 3000 3 Using 1 4 formulation 2075 Tygon tubing AZI P N 345 0050 attach a dry nitrogen or carrier gas source to the Flow Inlet Port fitting on the back of the instrument indicated by an arrow pointing to the connector 4 Adjust the source pressure to between 7 and 12 psi 5 If you plan to use a printer electronic balance and or computer connect them to the marked connectors at the back of the instrument The accessory keyboard plugs into a fitting on the right side of the instrument 6 Power control and fuses are located at the rear of unit Plug the instrument line cord into the matching port on the back of the instrument and a dedicated 110 VAC 60 Hz 15 Amp line source Never use any power cable other than the one provided or of equivalent UL listed ratings Be sure that the ground pin of the power source is properly grounded Never cover the power receptacle so that the power cord can not be removed quickly and easily 7 Toggle the power switch at the rear of the unit to the ON J position Page 7 of 51 8 9 After a quick view of the instrument identification and the firmware version the Main Test Screen will appear Data from the OFF 12 81 1997 69 21 44 Last Test A AAAAAH PPM H20 J PAHA Hpg H20 86 60 00 CAL TEST Current Sensor SELEGIS PRESS MEMRY Status READY TO TEST a36 To Select Another Menry Menu Graph Set of Stored Test Parameters Current Oven Temperature To View
7. 51 Dry System NOTES For all tests using a bottle the bottle should not be moved into the heater until a screen prompt appears directing that the bottle be inserted If the bottle is moved in too soon it may be ejected and the test results affected ENSURE the slick side of the septum is to the inside of the bottle or the moisture trapped in the septum will cause false moisture indications 1 From the Main Menu select in order e Memory Start Menu e Add Edit Memory Start OG CAL TEST FILTER DRY DOWN FILTER DRYDOWN H2 BOTTLE PURGE AF TO BEGIN PRESS START 2 ESCAPE to the Main Test Screen 3 PREPARE a new clean and dry sample bottle to Up Down be positioned into the heater during the next set of Figure 7 Select Filter Drydown steps 4 When the display indicates Ready to Test PRESS START 5 When prompted insert the clean sample bottle into the heater 6 When the instrument signals End of Test TO BEGIN PRESS START e Depress Menu Ha CAL TEST s Hi FILTER DRYDOWN Select Memory Start Menu ao SBOTTLE PURCES e Select Add Edit Memory Start e Select BOTTLE PURGE 7 Press Esc several times until the Main Test Screen is displayed Figure 8 Select Bottle Purge 8 When the display indicates Ready to Test PRESS START PLACE SAMPLE BOTTLE IN 9 When prompted with rRansPort AND INSERT UNTIL insert the sample bottle into the heater 10 This test
8. Edit Memory Start Menu 8 Press Selct then Edit e Use the A and arrow keys to select the desired testing temperatures The 4 and gt arrow keys move the cursor s position 9 When complete move the cursor to the end of the line Press Quit then Accept Page 16 of 51 10 Highlight the Result Display Option line 11 Press Selct then Edit 11 1 Use the A and arrow keys to select the type of moisture value for the test result to be displayed Either e Percentage of water e Parts per million ppm of water or e Micrograms pg of water measured 12 Press the Quit then the Accept keys 13 Highlight the Ending Criteria line 14 Press Selct then EDIT 14 1 Use the A and arrow keys to choose the type of ending value e Rate ends the test when the moisture evolved from the sample drops below the programmed microgram per second value Use RATE if you want to match an existing standard or method that utilizes a RATE criteria such as the KF titration method This method is extremely dependent on the amount of sample used and water collected during a test For repeatability testing use a very consistent sample size that is within 10 percent e Predict ends the test when the built in programmed criteria which mathematically calculates the end point moisture content has been satisfied Use PREDICT if you want to more accurately determine the actual moisture content or are working independently
9. Out and multiply the result by 100 to determine the Flow Calibration Factor FCF Figure 25 Sensor Status Display Measured Flow Out Rate a0 Flow One FCF Indicated Flow Out Rate 16 1 Example The flow meter reads 100 while the instrument display reads 109 for flow out The result of 91 7 should be rounded up 77g X 100 91 7 109 and a value of 92 used in the next few steps Page 36 of 51 17 18 19 20 21 22 23 23 1 24 25 26 Escape to the Main Menu and select in order EDIT SYSTEM CAL CONSTANTS Calibration Menu FLOW IN XDUCER 188 x e Edit System Cal Constant FLOW OUT XDUCER 94 x RH SENSOR UA 4 788 U RH SENSOR U75 3 308 U Edit the Flow Out Transducer Value to the SYSTEM GAL 160 calculated Flow Out FCF Quit Left Right Incr Decr Figure 26 Editing the Flow Out FCF Select View System Sensor Status SENSOR STATUS Escape to the Diagnostics Menu i indi i RH SENSOR 66 675 x RH Verify that the indicated Flow Out in ser a ml min now agrees with the measured flow FLOW OUT 100 mL Min rate on the flow meter within 1 ml min RH RTD 871 C H20 FLOW 4BB1 1 ug Sec If they do not agree edit the Flow Out FLOW MODE STDBY Transducer value to 100 and REPEAT steps 6 through 20 Esc Units Figure 27 Check Indicated Reading WHILE AT THE VIEW SYSTEM SENSOR STATUS MENU Read and record the Flow In value Divide the Indicated Flow Out reading by the Fl
10. RELEASED WHILE TESTING This prompt results from premature release or ejection of the sample bottle during a moisture test Failure of the transport latch is the most likely cause If this condition persists call the Arizona Instrument Customer Service Department at 800 528 7411 or 602 470 1414 6 BALANCE COMM FAILURE This prompt indicates that the memory start used specifies use of a digital balance for weight entry but the instrument is not communicating with a balance Check the cable and assure that the balance is powered on on line and stable Page 27 of 51 Occurring less frequently than condition prompts system failure codes require the instrument to be switched off and then powered back up It is possible for a failure to occur due to a transient condition However if the failure persists or occurs frequently call Arizona Instrument Customer Service at 800 528 7411 or 602 470 1414 aks ERROR MESSAGE TEXT MOST LIKELY CAUSE e RH RTD RANGE ERROR CABLEOR RTD FAL e RHRTDRATEERROR maNnFoLD HEATER Page 28 of 51 Below are some commonly asked questions with answers and possible solutions Q What if my water injection results are zero or near zero Figure 18 Correct Placement Figure 19 Incorrect Placement A Make sure the syringe is being inserted all the way into the injection port Q What if my water injection results are out of range A Perform a sensor calibration
11. This Test s Graphical Data To Access the Main Menu Options Figure 3 Main Test Screen Allow the instrument to warm up for 20 minutes Page 8 of 51 Check Sensor Status From the Main Test Screen select Menu to reveal the Main Menu Use the buttons below the display on the front panel to move through the menu screens and system settings 1 Move the cursor down to highlight the Diagnostic MAIN MENU ou MEMORY START MENU STORED DATA MENU 2 Press Selct ee MENU DIAGNOSTIC MENU Esc Selct Up Figure 4 Select Diagnostic Menu 3 Verify the View System Sensor Status option is DIAGNOSTIC MENU highlighted VIEW SYSTEM SENSOR STATUS MANUAL FLOW CONTROL MENU UIEW SYSTEM EXCEPTIONS 4 Press Selct again to view the Sensor Status PRINT EXCEPTION REPORT Screen Figure 5 Diagnostic Menu 5 Adjust the nitrogen source pressure if necessary SENSOR STATUS but not to exceed 12 psi so that the Flow in and RH_SENSOR 66 675 x RH Flow out rates are both at the optimum setting of M eit 1an E a 100 ml min 3 ml min NOTE that the flow out MAN RTD 868 C p BOTTLE RTD 436 C may read slightly higher than the flow in RH RID M C e Ifthe suggested rates are not obtained see H20 FLOW 881 1 ug Sec How do I Calibrate the Flow Sensors on ELOY MODE STDBY page 41 Esc Units Figure 6 View Sensor Status Screen 6 Return to the Main Test Screen by pressing Esc three times Page 9 of
12. a weighing that has been zeroed out is removed from the pan a negative reading is displayed To return to zeros press the ZERO switch Pressing the MODE switch starts the unit of weight cycle as follows grams g carats ct pennyweights dwt troy ounces ozt and ounces oz Press the MODE switch a second time when the desired unit of measure appears For Computrac 3000 operation verify that the balance is weighing in grams g Pressing the SEND switch sends the information on the display to the Computrac 3000 Pressing the FUNCTION switch cycles the display through four functions as follows PCS front panel parts counting HI OK LO check weighing CAL 1 auto calibration CAL 2 factory set do not use To access the desired function press the MODE switch when it appears on the display CAL 2 is set at the factory and should never require further adjustment The procedures for the other three functions are as follows Page 45 of 51 Perform auto calibration every time you move your balance It is extremely important to use high quality weights and verify the balance has been warmed up for at least one 1 hour prior to calibration Procedure Remove any containers or weighings so that only the stainless steel pan is in place Press the ZERO switch Press the FUNCTION switch Press the MODE switch when CAL 1 appears Wait 10 seconds then press the ZERO switch Place the displayed weight or one of t
13. source of water is present in the system and must be removed before dry down will succeed Normally the rate will begin to decline after a short time and eventually will fall to less than 1 ug sec When this occurs a READY TO TEST message will appear on the display and testing can resume QO What about interferences Q What is good syringe technique A Good syringe technique is essential to accurate calibration The syringe uses the volume inside the needle as its calibrated quantity It is important to eject any trapped air to properly fill that volume Insert the syringe needle through the septum of a sample bottle of clean water distilled or de ionized water Depress the plunger all the way down Slowly withdraw the plunger to the stop Rapidly depress the plunger all the way and observe the needle tip for small bubbles If any appear repeat the cycle until none appear Slowly withdraw the plunger to the stop and hold it against the stop while withdrawing the needle from the septum To prevent loss of water from the syringe by capillary action do not touch the needle tip to anything until it is inserted into the calibration port of the instrument Start a CAL TEST see page 14 When prompted by the instrument place the needle tip in the injection port at the top of the instrument and insert it straight down until the septum is contacted Push it in until it touches the bottom of the injection port Be careful not
14. switch To enter RS 232 configuration mode proceed as follows Procedure Turn balance off using the ON OFF switch Hold the SEND switch down while turning balance on using ON OFF switch BAUD RATE SELECTION 9600 is default Press the SEND switch until the desired baud rate is displayed then press the ZERO switch LOCAL CONTROL SELECTION via front panel LC OFF is default Press the MODE switch Press the SEND switch to choose off then press the ZERO switch PROTOCOL SELECTION Pr OFF is default Press the MODE switch Press the SEND switch to choose off then press the ZERO switch PARITY SELECTION PA nonE is default Press the MODE switch Press the SEND switch to choose nonE then press the ZERO switch Display Reading Display blanks OK and the current baud rate br300 br600 br1200 br2400 br4800 br9600 or br19 200 is displayed OK SAVEd is displayed followed by OK and the chosen baud rate OK and the current front panel control setting LC on or LC oF F is displayed OK SAVEd is displayed followed by OK and the chosen setting OK and the current software protocol setting Pr oFF or Pr on is displayed OK SAVEd is displayed followed by OK and the chosen setting OK and the current parity setting PA EVEn PAodd or PA nonE is displayed OK SAVEd is displayed followed by OK and the chosen setting Page 47 of 51 Procedure AUTO SEND SELECTION AS oFF is default Press
15. the MODE switch Press the SEND switch to choose off then press the ZERO switch CONTINUOUS SEND SELECTION CS oFF is default Press the MODE switch Press the SEND switch to choose off then press the ZERO switch DISPLAY BLANKING SELECTION bL oFF is default Press the MODE switch Press the SEND switch to choose off then press the ZERO switch Press the ON OFF switch Page 48 of 51 Display Reading OK and the current auto send setting AS oFF or AS on is displayed OK SAVEd is displayed followed by OK and the chosen setting OK and the current continuous send setting CS oFF or CS on is displayed The display blanks OK SAVEd is displayed followed by OK and the chosen setting OK and the current display blanking setting bL on or bL oFF is displayed OK SAVEd is displayed followed by OK and the chosen setting The display blanks These specifications are intended as a guide to proper use of the instrument Specifications and features will vary with 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 0001 for current specifications controlling this instrument All specifications and features are subject to change without notice Periodically contact Customer Service to see if any upgrades are available for your instrument Dim
16. to move the plunger while inserting the needle Depress the plunger all the way with a firm smooth stroke Remove the needle from the injection port immediately Page 30 of 51 Store the needle in a dry place A desiccator box is a good choice If water is allowed to remain in the needle it will cement the needle bore and plunger wire together If this happens do not force the plunger to move as this will break the wire Instead insert the needle into the water bottle and let it soak for 15 minutes or until it moves freely If the syringe is damaged or is in need of annual calibration contact Customer Service at 800 528 7411 or 602 470 1414 fora replacement After receiving an RMA number return the damaged syringe to AZI for repair service Q Why do my tests sometimes end in less than 2 minutes A This is usually caused by an inappropriately large rate ending criterion value Recall that when using the rate ending criterion you entered a rate value to end on If the sample moisture is very low or the sample is too small the peak rate never exceeds the ending rate and the instrument concludes that the test is over To rectify this use a larger sample or a lower ending rate value See To Select How to End the Test beginning on page 19 Q How do I transfer stored data to a computer file A To store archival information in a computer text file before deleting it from the instrument memory set up the instr
17. will run for 15 minutes to purge moisture that may have migrated into the system e Ifthe result is more than 100g repeat the bottle purge test e Ifthe result does not fall under 100g after the 3rd or 4th test e Ensure the slick side of the septum is to the inside of the sample bottle e Check and or change the hydrophobic filter see page 39 e Call AZI Customer Service at 800 528 7411 or 602 470 1414 Page 10 of 51 The water calibration test verifies that the instrument is working properly This test only takes a few minutes Arizona Instrument recommends that e This test be run every day to verify the system s calibration and accuracy and e _ The syringe be returned for calibration annually or if damage is suspected The information presented here will help you perform the test described on the next page The syringe uses the volume inside the needle as its calibrated quantity It is important to eject any trapped air to properly fill that volume Insert the syringe needle through the septum of a sample bottle of clean water distilled or de ionized water Depress the plunger all the way down Slowly withdraw the plunger to the stop Rapidly depress the plunger all the way and observe the needle tip for small bubbles If any appear repeat the cycle until none appear Slowly withdraw the plunger to the stop and hold it against the stop while withdrawing the needle from the septum To prevent loss of water from the syringe by capil
18. CHECKING BALANCE COMM 8 Ifthe check is good press Esc until the Main Test Screen is displayed If not recheck the cables and setup conditions Figure 33 Oval at bottom will show weight when communication good Page 40 of 51 The balance weighing pans remote power supply and windscreen are packed in a foam support to protect them from shock during shipping and handling Save and reuse all packing material for future damage free shipments CIRCULAR WINDSCREEN Swircy SwitcH _ Witch Figure 33 Balance Full View Page 41 of 51 All AZI balances are equipped with a special clamping screw that locks the balance suspension during shipping This screw must be loosened before the balance can be operated see Figure 34 e Locate the black knob on the front center of the balance underneath the display area e Remove the paper tag e Turn the knob approximately one 1 turn counter clockwise as shown in Figure 34 until it stops If the balance is shipped or moved long distances the clamping screw should be re tightened by turning the knob in the clockwise direction until resistance is felt approximately one 1 turn Figure 34 Unlocking Clamping Screw The environment in which your balance is used is very important Air movement temperature changes vibrations direct sunlight etc influence the performance of high precision balances Therefore place your balance on a solid sturdy surface that is f
19. The Computrac 3000 self adjusts the internal calibration factors to the high precision moisture sensor due to varying conditions temperature product accumulation in the flow system component wear etc Over time this may cause the overall calibration to drift slightly Since sensor calibration is easily performed daily verification is recommended Page 29 of 51 QO How do I dry the instrument after an upset A In case the instrument has been flooded with moisture either by running a very wet sample or by exposure to a wet atmosphere it will be necessary to dry the entire flow system before normal operation can be resumed Inspect the filter tubing the needle and mount to be sure that no contaminants are present that might absorb and release large quantities of water If contamination is present replace the contaminated parts with new parts Confirm that the carrier gas supply is dry If there is any doubt about this employ a drying cylinder in line with the gas supply before connecting it to the instrument gas input fitting Begin drydown of the system Place a clean dry sample bottle ensuring that the slick side of the septum is to the inside of the bottle in the transport Go to the memory start list and select FILTER DRYDOWN Start the test and insert the bottle Periodically examine the rate graph display and see if the moisture rate is falling If it remains at a very high level until the end of the test a
20. e carrier gas flow out of the instrument is less than 90 of the flow into the instrument suggesting a leak Possible Cause Recommended Solution Faulty bottle septum Replace bottle septum Faulty bottle cap Replace bottle cap Flow system leak Locate and eliminate leak Flow system out of calibration Calibrate flow system 2 INPUT CARRIER GAS FLOW LESS THAN 40 mL Min This prompt results when the source flow into the instrument falls below the specified rate Increase source pressure to 7 12psi Locate and eliminate blockage Source connected to flow out barb Connect to flow in barb Flow sensor failure Call Arizona Instrument Blocked Needle Check that bottle septum is not blocking needle port Page 26 of 51 3 THE RH SENSOR WAS NOT READY This is a normal condition between tests indicating the drying or zeroing of the sensor If the condition persists for more than a few minutes then Possible Cause Recommended Solution Flow system contaminated Locate and eliminate contamination System unusually wet Wait for system to dry Install change external desiccant Wet source gas chamber 4 SEPTUM CHECK WARNING The septum at the calibration injection port has experienced 60 or more water injections and may be in danger of losing its core into the flow system Change the septum and reset the counter by selecting SETUP MENU from the MAIN MENU then SEPTUM RECORD SETUP then Go 5 BOTTLE
21. e cece eee eee Page 38 of 57 APPENDIX A ELECTRONIC BALANCE 0 00000 Page 47 of 57 Unpacking and Setup 0 0 cee eee ee Page 47 of 57 The On Om Switch iaae e apitn a Page 49 of 57 Connecting the External Balance to the Computrac 3000 Page 50 of 57 The Zero Switth sic6 sf 2g ada Sokal ote cl t hls Od do aly lea Page 51 of 57 Unit of Weight Selection 0 0 eee eee eee Page 51 of 57 The Send Switcht saN yenir T EAN eto dead eo ae ee ce Page 51 of 57 The Function Switch 0 0 0 eee eee eee Page 51 of 57 Auto Calibration CAL 1 Using an External Calibration Weight Ee AS ie eae eee ek Gece he ee ee Page 52 of 57 RS 232 Front Panel Configuration 005 Page 53 of 57 APPENDIX B SPECIFICATIONS AND RATINGS Page 55 of 57 Page 3 of 51 Arizona Instrument is proud to continue its leadership developing new technology in the moisture analysis industry The COMPUTRAC 3000 has been recognized by R amp D Magazine as one of the 100 most technologically significant new products of 1997 A revolutionary moisture analyzer with a detection limit of 10 ppm the COMPUTRAC 3000 uses a sensor based technology and correlates to the Karl Fischer coulometric titration method with an oven attachment in precision and accuracy The analyzer does not utilize reagents minimizes consumables and is simple to operate 1997 Winner R amp D Magazine Technology 100 Award
22. e setup e Select Balance Driver SETUP MEHU EXT BALANCE SETUP CLOCK SETUP SELECT BALANCE DRIVER DE SELECT TARE MO CHECK BALANCE COMM EXT PRINTER SETUP REPORT SETUP ACCESS KEY SETUP SEPTUM RECORD SETUP Esc Selct Up Down Esc Selct Down Figure 29 Setup External Balance Figure 30 Select Functions 2 Select the AZI SP150 or SCI SA800 according to the balance you have e Quit e Accept Select Tare Mode SELECT TARE MODE e Fixed Bottle Weight if all sample bottles FIED BOTTLE WEICHT weight exactly the same MANUAL BOTTLE WEIGHT e Manual Bottle Weight if all bottles are pre TARE EMPTY BOTTLE weighed by hand e Tare Empty Bottle if the balance is to tare weigh each bottle before it is filled with sample Esc Selct Up Down Figure 31 Select Tare Mode Escape ESC to the Ext Balance Setup Menu Connect the cable between the CT 3000 Balance Input and the balance RS 232 Connector Turn the balance power on and wait for the ready indication Page 39 of 51 7 Select Check Balance Comm on the Ext ERTERNAL BALANCE CHECK Balance Setup Menu TURN BALANCE ON e Select Go and wait for communication to MAKE SURE COMM CABLE IS be established COMHECTED TO PORT i e Ifthe check is bad verify each step above HIT GO WHEN BALANCE IS READY Figure 32 Balance Communication Check e Ifthe check indicates good FRTERNAL BALANCE CHECK communication a weight will be shown on the CT 3000 display
23. e water up slowly into the syringe Press the START key on the Computrac 3000 Itis important to begin the test promptly since the water will evaporate out of the syringe needle Almost immediately the screen will display the blinking message HAND INJECT WATER NOW Inject the sample by inserting the syringe needle all the way down into the injection port The rounded needle tip should touch the bottom Depress the syringe plunger wait a second or two and remove the needle This method will help to optimize the water transition and minimize the test time Allow the test to proceed until completed It should take less than 3 minutes If desired perform another four calibration injections and calculate the statistics for the water injection results for instant performance analysis e To do this press Menu for MAIN MENU e Press Selct for STORED DATA MENU e Press Selct for ANALYZE STORED DATA e Highlight and Selct the desired results to be included in the statistics and e Press STAT to calculate Average Standard Deviation and Coefficient of Variation The average should fall within 5 of the calibrated syringe s value If the mean result does not fall within the 5 range a sensor calibration should be performed Page 12 of 51 Only a one microliter 11 syringe which has been calibrated to 5ul with the exact weight in pgrams clearly visible will be used for this calibration or an NIST traceable syrin
24. easy since all the alphabetic and number keys can be used while editing 5 Move the cursor all the way to the end of the line then press the Quit then the Accept keys Page 15 of 51 6 Determining the Test Temperature 6 1 Generally use the highest temperature possible without causing other undesirable conditions such as melting or excessive release of other volatiles The instrument is relatively insensitive to the exact temperature used Too low a temperature will result in slow tests and possibly low results It is important that the sample not melt in most cases A melted sample may form an impermeable skin and trap moisture resulting in a low answer If the melting temperature is known use a temperature 10 or 20 degrees lower If it is not known start at a high temperature 230 to 270 and lower it until the sample no longer melts The following guidelines will help to determine test temperature 6 2 Ifyou are testing pelletized resins or a similar material set the test temperature to 230 C or the same temperature as used in a pyrolysis oven attachment to a Karl Fischer KF titrator 6 3 Ifyou are testing any other type of material set the temperature to 130 C 6 4 Runa moisture test e Ifthe sample doesn t melt raise the temperature 10 C and return to step 6 4 e Ifthe sample melts lower the temperature 10 C and repeat the test until condition is no longer observed 7 Highlight the Temperatures on the
25. ensions Weight Power Ratings Environmental Requirements Heating Range Resolution Special Service Carrier Gas Rear Panel Connections Side Panel Connections Detection Limit Repeatability Accuracy Automatic Test Ending Method Approximately 146 mm X 380 mm X 370 mm Approximately 8 6 kg 19 Ibs 110 10 volts 50 60 Hz 1 amp standby or 8 amps heat on or 210 10 volts 50 60 Hz 0 5 amp standby or 4 amps heat on 5 to 40 C 0 to 80 RH non condensing indoor use Optimum results are obtained from 20 to 40 C 25 C to 275 C electronically controlled 1 microgram 1 ppm 0 0001 water in sample Dry nitrogen or dry air 40 C dew point or lower is suggested at 7 to 12 psig user supplied Parallel printer port PC standard 9 pin RS 232 9600 N 8 1 9 pin Balance Comm proprietary protocol and cable Power cable receptacle with RFI filter Carrier gas input barb fitting Carrier gas exit barb fitting PC keyboard DIN socket 10 micrograms 1 standard deviation Depends on sample properties and syringe technique typically CV is lt 10 Depends on sample properties and syringe technique typically error is lt 10 Rate Threshold user adjustable Time user adjustable Prediction Page 49 of 51 Accessory Kit One 1 0 microliter calibrated syringe 990 0068 Ten each 20 mililiter sample bottles with septa and caps 990 0064 One hydrophobic filter 990 0059 Two injecti
26. est A factory calibrated syringe provided in the accessory kit permits quick and easy system verification System calibration is checked in just minutes Re calibration is a menu driven two step procedure to assure accurate and reliable results day after day Built in self diagnostics constantly monitor system conditions to detect and report any abnormalities in the hardware software moisture sensor or flow system Page 4 of 51 The COMPUTRAC 3000 utilizes a cylinder shaped bottle heater a dry gas flow system and a moisture sensor The instrument heats a sample of test material contained in a 20 ml mililiter septum bottle Volatiles driven from the sample pass through the manifold containing the Relative Humidity RH sensor where the evolved moisture is measured A microprocessor uses the collected data to generate an accurate measurement of the moisture content in the sample The instrument then displays the result in terms of e Parts per million ppm H O e Micrograms ug H O or Dry Air In C O E il hl a ha Ba Transducers Dry Air Out Figure 1 CT 3000 Basic Flow System The main sensor used to detect water in the gas stream is a polymer capacitor relative humidity sensor The reading from this sensor is combined with manifold temperature and outlet flow rate to determine absolute micrograms of water per second Test parameters such as temperature ending criteria and sample weight entry can be changed to optim
27. f information are to be included in the report or not These items are Memory Start Number Memory Start ID Text String Lot Number Product ID Text String Test Date and Time Final Result ppm or Final Mass micrograms H20 Ending Criterion Sample Weight Test Time Test Temperature Ending Rate micrograms sec at end of test gt Edit Company Name allows you to change the company name that prints on the header line of the report e ACCESS KEY SETUP Allows entry of the secret access codes used to prevent unauthorized alteration of stored parameter sets or stored data sets The master key controls all functions The Params key controls memory start parameter list access e SEPTUM RECORD SETUP This function resets the injection port septum counter When the septum has been used 60 times a message will warn the operator to replace it When the replacement is accomplished use this function to reset the count to zero Page 24 of 51 e VIEW SYSTEM SENSOR STATUS Displays RH sensor value flow in and out manifold temperature RTD bottle heater temperature RH sensor temperature H O flow rate and instrument flow mode e MANUAL FLOW CONTROL MENU This menu allows manual control of the carrier gas flow mode for test and analysis of possible system faults There are five selections Sensor Drydown high flow through the manifold and RH sensor but not the needle or bottle Standby normal flow through the manifold and RH se
28. ge set to 5ul 500ug This syringe has a very small barrel and piston which must be properly cared for to assure a correct injection is delivered to the instrument After first use the syringe must be stored in a desiccant box or it will become immobilized internally Once the syringe has become immobilized it should be replaced The syringe should be returned to AZI annually for calibration or if damage is suspected Contact AZI Customer Service at 800 528 7411 or 602 470 1414 to obtain a Return Material Authorization RMA number and prompt replacement AZI Part Numbers of most used items SEPTA Injection Port 990 0058 FILTER Hydrophobic 990 0059 BOTTLE Sample Black top only 990 0064 SYRINGE 1mliter calibrated to 0 5uliter 990 0068 SEPTA Sample Bottle 990 0074 1 SELECT IN ORDER e Memory Start Menu e ADD EDIT Memory Start e Cal Test 2 Press Esc several times until the Main Test Screen appears 3 Prepare the Syringe with distilled or deionized water e Insert the syringe into the water bottle and fill the syringe e Rapidly depress the syringe s plunger to expel any air in the barrel e Fill the syringe and hold the plunger against the stop e Remove the syringe from the bottle 4 When the READY TO TEST is displayed e Depress the Start Button 5 When the INJECT WATER NOW prompt flashes on the display e IN ONE CONTINUOUS MOTION gt nsert the syringe into the instrument to the stop
29. he alternating weights on the pan Wait 10 seconds then press the ZERO switch Remove the calibration weight Page 46 of 51 Display Reading Zeros are displayed Display cycles repeatedly through PCS HI OK LO CAL1 CAL2 CAL 1 and a flashing O are displayed The display stops flashing In approximately 10 seconds a weight value or two alternating weight values flash on the display The display stops flashing and the selected weight is displayed The weight continues to be displayed while the calibration takes place approximately 10 seconds The display blanks then displays OK and then displays the calibration weight The display returns to zeros and the normal weighing mode The RS 232 Configuration Mode allows changes to the baud rate front panel control software protocol parity and auto send The balance is configured at Arizona Instrument to communicate with a Computrac 3000 AZI preset settings indicated in the following table by parenthesis around the setting Any changes to this configuration will affect communication with the Computrac 3000 It is not necessary to follow the entire configuration procedure if only one parameter is to be changed Follow steps and 2 then use the MODE switch to select the parameter to be changed skipping the others Select the desired setting using the SEND switch save the setting using the ZERO switch then turn the balance off and then on again with the ON OFF
30. ize test speed and accuracy See Appendix B beginning on page 55 for detailed specifications and operating limits Page 5 of 51 Unpack the instrument and locate the following items AZI P N e COMPUTRAC 3000 e Line cord for 120 VAC 200 0002 e Accessory Kit Y990 0063 gt One 1 0 ul Hamilton Syringe 990 0068 gt Ten 20 ml Sample Bottles with 990 0064 Septums and Caps gt One Replacement Sample Probe 990 0057 gt Two Injection Port Septums 990 0058 One Hydrophobic Filter Disk 990 0059 gt User s Manual 700 0012 gt Power Cord 200 0002 Optional Items e Balance with interface cable Y990 0082 e Printer Y990 0098 e 10l key keyboard 990 0088 e Dry Air Generator 600 0169 If you are unable to locate any of the standard items or have questions regarding the optional accessories please contact AZI Customer Service at 800 528 7411 or 602 470 1414 Page 6 of 51 2 Place the Computrac 3000 on a solid level surface that is large enough to accommodate the instrument and any accessories or materials that may be required for your work balance printer sample bottles samples etc Aie QD 2 OW CTA MODEL CT 3000 i 80230 3360 NS DE A 60H REPLACEMENT FUSES 11DVAC 8ASB 220VAC 4ASB c Figure 2 Rear Panel of the CT
31. lary action do not touch the needle tip to anything until it is inserted into the calibration port of the instrument When prompted by the instrument place the needle tip in the injection port at the top of the instrument and insert it straight down until the septum is contacted Push it in until it touches the bottom of the injection port Figure 10 Correct Placement Figure 11 Incorrect Placement Be careful not to move the plunger while inserting the needle Depress the plunger all the way with a firm smooth stroke Remove the needle from the injection port immediately Page 11 of 51 10 Ensure that the TEST prompt on the main screen Las fe ane ance Te OFF reads KCAL TEST If not press Memry FINAL 8000 Qyq H20 J move the cursor up to highlight KCAL TEST OTAL GOHA Apy H20 and press Select TIME 66 66 66 TEST geile eye MEMRY SELECTS PRE amp 8 MEMRY Remove the one microliter syringe from the box READY TO TEST CEIR e The syringe has been factory set to Henry Menu Graph approximately 500ug The actual calibration Figure 12 CAL TEST Displayed value is written on the side of the syringe e Depress the plunger to the stop Insert the needle through the septum of a sample bottle containing distilled or de ionized water Draw water into the syringe Quickly cycle the syringe through its full stroke while in the water to eliminate any air bubbles in the capillary and shaft Draw th
32. les it may be necessary more often CAUTION Line voltage is present under the instrument s cover To prevent electrical shock turn off power and remove the power cord when instructed to do so Do not re connect the power cord and turn power on until after the cover is secured in place l Cover Release Opening og j Arizone USTED mstrument w o 62 MODEL CT 3000 Cree L X PERN 803 235 3340 vorsiinerume MANUSA REPLACEMENT FUSES 110VAG 8ASB 220VAC 4ASB _ Figure 20 Cover Release Location To inspect the filter and tubing unplug the power cable Then insert a small probe into the hole at the back of the instrument It is marked by a graphic symbol indicating the method of opening the top cover Push inward to release the safety catch and lift the cover up with your free hand Remove it and put it in a safe place The filter is visible at right center above the manifold Be careful not to contact the bottle heater rim as it may be hot enough to cause a burn Examine the filter and flex tubing If a deposit or discoloration is observed in the flex tubing between the filter and the manifold the filter and tubing should be replaced and the entire sample flow path cleaned with isopropyl alcohol 3 MPORTANT S Never use methanol for cleaning an
33. mbers will remain in memory until the next sensor calibration is performed The injections used for this calibration will be automatically marked so they will not be used for the next calibration 16 Press the Esc key several times until the Main Test Screen appears 17 Perform at least one more water injection to verify the accuracy of the calibration Page 14 of 51 The Computrac 3000 has seven available positions to store test parameters for different materials Storing the parameters ensures that each test of the same material will use the same parameters to assure accurate reliable and repeatable testing MAIN MEHU MEMORY START MENU STORED DATA MENU oe N 1 From the Main Menu select Memory Start DIAGNOSTIC MENU Menu Esc Select Down Figure 13 Memory Start Menu 2 From the Memory Start Menu select Add Edit Memory Start ADD EDIT MEMORY START REORDER MEMORY START PRINT MEMORY STARTS 3 Move the cursor down to an available memory start setting a blank line Esc Selct Down Figure 14 Memory Start Menu 4 Press Selct then Edit at the Edit Sample ID line 4 1 Use the A and arrow keys to scroll through the alpha numeric characters The and P arrow keys move the cursor s position left and right AA TIP Use the arrow keys on the 101 key keyboard to navigate the menu system if it is included with your system The keyboard makes entry of long strings of characters such as product names
34. n by line date or all items PERFORM RH SENSOR CALIBRATION gt To be used carefully and only when required to calibrate the moisture sensor When this selection is made the stored data sets and the calibrated syringe volume are used to calculate and execute the automatic adjustment of the instrument calibration constant EDIT SYSTEM CALIBRATION CONSTANTS This selection allows the entry of the two sensor constants written on the sensor card when a flow manifold is replaced and the adjustment values to calibrate the flow sensors Page 23 of 51 SETUP MENU e CLOCK SETUP Sets the internal clock for the correct time and date e EXT BALANCE SETUP Identifies the type of external balance AZI SP150 or SCI SA80 Selects the tare mode fixed or manual bottle weight entry or balance entry and gt Verifies the communication link between the instrument and balance e EXT PRINTER SETUP Identifies the type of data printer used and specifies where the output data is to be sent RS 232 LPT or both e REPORT SETUP gt Report Control specifies when the report is to be printed off at the start at the end selects the output format text or spreadsheet specifies the reporting interval in seconds turns on or off end of line automatic formfeeds selects which graph to print both rate result none and turns lot number recording on or off gt Report Content specifies whether particular items o
35. nsor Bottle Purge high flow through the needle and bottle vented Sample Test low flow through all components bottle must be present Off returns the system to automatic control of the flow state If any manually controlled flow state is used ensure the manual flow control is set to off before attempting normal operation If this is overlooked an error message will be displayed on the main screen e VIEW SYSTEM EXCEPTIONS gt A list of the last 20 faults detected by the instrument diagnostic system Print the list and fax it to AZI Customer Service at 602 470 1888 to assist in diagnosis of possible system failure e PRINT EXCEPTION REPORT Prints the stored list of instrument diagnostic exceptions RTD stands for Resistive Temperature Detector and describes the solid state devices used throughout the instrument to measure temperatures Page 25 of 51 To assure proper performance your Computrac 3000 uses an intelligent self diagnostic system to detect any problems in the hardware software sensors or flow system Operating abnormalities and fault conditions will result in system failure codes or condition prompts They will be recorded in the Exception Reports table Condition prompts indicate operating conditions that prevent starting or completing of a moisture test Following each condition prompt are possible causes and recommended solutions 1 EXCESSIVE IN OUT FLOW RATIO This prompt indicates that th
36. nt See Figure 24 for latch locations This releases the plastic cover from the metal base Lift the housing up and towards you and remove it from the chassis Store the cover in a safe place Page 35 of 51 Flow Regul Adj Top Cover Latches ow Regulator Adjustment T HIF 8 H2 EE 11 SS 5 oO CW to increase flow 12 H6 O COW to decrease flow Figure 24 Cover Latches and Flow Regulator Adjustment Locations 10 Set the output flow for 100ml min measured on the flow meter e Slowly Adjust the screw on top of the Inlet Flow Regulator CLOCKWISE to increase and COUNTERCLOCKWISE to decrease the flow until the flow meter indicates 100 ml min 11 Connect the power cord to the source of power and turn the instrument on 12 Go to the Diagnostics Menu 13 Select View System Sensor Status 14 Read and record the exact outlet flow rate as SENSOR STATUS DURET RH SENSOR p indicated by the flow meter FLOW IN FLOW OUT SEEST MAN RTD 15 Read and record the instrument s indicated BOTTLE RTD Flow Out from the display RH RTD H20 FLOW 8681 1 ug Sec FLOW MODE STDBY ETH Units 16 Divide the Measured Outlet Flow Rate by the Instruments Indicated Flow
37. of 57 Dy Syste 282 e al eles thee ed eleclis Sen el aa te ad ale Page 10 of 57 CALIBRATION TESTS 2 0 cece cece eee nee Page 12 of 57 Syringe Technique 0 0 ce eee eee eee ene Page 12 of 57 Calibration Check 0 0 0 cece eee Page 14 of 57 Sensor Calibration 20 0 00 eens Page 15 of 57 RUNNING MOISTURE TESTS 00 0 Page 17 of 57 select Test Settines i iteraa a Page 17 of 57 To Enter Material Name 0 0 00 cee eee eee Page 17 of 57 To Set Programmed Test Temperature 0 Page 18 of 57 To Select Units for the Final Result Display Page 19 of 57 To Select How to End the Test 0 00 00 eee Page 19 of 57 Run Moisture Test 0 0 cece eee eee Page 23 of 57 COMPUTRAC 3000 MENU SYSTEM 00 2 e eee eee Page 24 of 57 MEMORY START MENU 0 00 ee eee eee eee Page 26 of 57 STORED DATA MENU 2 0 0 0 cece cece eee Page 26 of 57 CALIBRATION MENU 0000 c eee eee eee Page 26 of 57 SETUP MENUS eso cage heehee he Se hE E EEE VEN ES Page 28 of 57 DIAGNOSTIC MENU E c eee eee Page 29 of 57 CONDITION PROMPTS and SYSTEM FAILURE CODES Page 30 of 57 Condition Prompts 0 0 eee eee eee Page 30 of 57 System Failure Codes ser runea 000 c eee eee Page 32 of 57 COMMONLY ASKED QUESTIONS 2 0 0 0 cece eee eee Page 33 of 57 REPAIR AND MAINTENANCE 0000
38. of other standards or methods This potential calculation monitors moisture loss from the sample to extrapolate the final moisture concentration and provides the quickest test times e Time ends the test when the programmed testing period has elapsed The test will end when a selected amount of time has passed Any value from 001 to 999 minutes may be entered Fixed time ending is seldom superior to the predict calculation but is useful when conducting application characterization tests or when investigating long term stability of the instrument Page 17 of 51 15 Ifyou are attempting to match KF analysis results find out what sample size and sensitivity setting was used in the KF procedure Use approximately ten times as much sample in the Computrac 3000 and set the rate ending criteria value to ten times the sensitivity value used in the KF equipment Example KF Sensitivity Setting KF Sample Size 0 1 ug sec 0 5 grams Computrac 3000 End Rate Computrac 3000 Sample Size 1 0 pg sec 5 grams 16 Ifyou do not have the KF parameters available perform the following experiment 16 1 Select a sample size that will yield 500 to 1000 micrograms of water or use the table below 005 015 50 150 ppm 015 035 150 350 ppm cree 075 150 0 5 1 gram 150 350 0 2 0 5 gram 350 750 0 1 0 2 gram 750 1 5 0 05 0 1 gram 16 2 For best accuracy and speed the sample should evolve between 500 and 1000 micrograms of
39. on port septa 990 0058 Replacement sample probe 990 0057 User s Manual 700 0012 Power cord for 120 volt use 200 0002 Optional 101 key PC keyboard 990 0088 Accessories PC graphics printer Y990 0098 Digital balance with cable and Y990 0082 Communications Software Travel case 990 0092 Dry air generator 600 0169 Warranty Instrument is warranted for two years against defects in material or workmanship Consumable and routine maintenance are not included in the warranty Contact Customer Service for AZI annual maintenance contract information US Patent No 5 712 421 Foreign Patents Pending UL and CE Listings Pending Page 50 of 51 TRADEMARK AND COPYRIGHT PROTECTION Computrac Arizona Instrument and the stylized AZI are all registered trademarks of Arizona Instrument LLC Instrument firmware is copyright protected Copyright 1998 Arizona Instrument LLC All Rights Reserved Arizona Instrument LLC Computrac 3000 Moisture Analyzer User Manual Part Number 700 0012 Revision C1 Document Number 6C21 0017 February 1998 If you have any questions regarding the operation of this instrument please call our toll free number 800 528 7411 or fax 602 470 1888 Internationally call 602 470 1414 or from Canada call 800 528 7411 Arizona Instrument 3375 N Delaware St Chandler AZ 85225 USA http www azic com email azi azic com General intl azic com International support azic com Customer Support Page 51 of 51
40. ow In reading and multiply the result be 100 to obtain the Flow In FCF Value Indicated Flow Out Rate Indicated Flow In Rate x 100 Flow In FCF Example The instruments flow out reads 100 while the instrument 100 flow in 113 The result of 88 4 should be rounded down and a Ta 100 88 4 value of 88 used in the next few steps Escape to the Main Menu and select in order e Calibration Menu e Edit System Cal Constant Edit the Flow In Transducer Value to the EDIT SYSTEM CAL CONSTANTS calculated Flow In FCF FLOW IN XDUCER 983 x FLOW OUT XDUCER 92 x RH SENSOR UA 4 78 U RH SENSOR U75 3 388 U SYSTEM CAL 100z Escape to the Main Menu Quit Left Right Incr Decr Page 37 of 51 27 Select Diagnostics Menu 27 1 Select View System Sensor Status e Verify that the indicated Flow In value agrees with the Indicated Flow Out value within 2 ml min e Ifit does not Adjust the Flow In FCF value in the Edit System Cal Constant Menu so that the Flow In and Flow Out Indications in the System Sensor Status Menu are equal 2 ml min 28 Press Esc to the Diagnostics Menu 28 1 Select in order e Manual Flow Control e Off 29 Check and if necessary adjust the RH Sensor calibration see page 14 Page 38 of 51 How do I set up the CT 3000 to use the AZI SP150 or SCI SA800 digital balance Follow the steps below Beginning at the Starting Screen select the prompts in order e Main e Setup e Ext Balanc
41. plied to the instrument is between seven 7 and twelve 12 psi 9 to 10 psi is preferred 2 Connect the dry gas supply tube to the Instrument s Inlet Port 3 Connect the Instrument s Outlet Port to a calibrated Flow Meter s Inlet Port 4 From the Main Menu Select in order e Calibration Menu EDIT SYETEM CAL CONSTANTS e Edit Cal System Constants FLOW IN KDUCER 187 x FLOW GUT ADUCER 100 x RH SENSOR UG 6 788 U 5 Edit the two values Flow In and Flow Out to read RH SENSOR UFG 3 300 U 100 SYSTEM CAL 100z 6 From the Main Menu Select in order Quit Left Right Incr Decr e Diagnostics Menu Manual Flow Control Figure 23 Editing Calibration Value gt BOTTLE PURGE to allow maximum flow then gt STANDBY to allow flow regulator adjustment 7 Turn the instrument off and remove the power cord from the source of power CAUTION Line voltage is present under the instrument s cover To prevent electrical shock turn off power and remove the power cord when instructed to do so Do not connect the power cord and turn power on until after the cover is secured in place 8 Insert a small screwdriver or other probe into the latch release hole at the back near the top of the instrument and remove the lid See Figure 20 on page 38 for release location Store the lid in a safe place 9 Reach through the opening at the top of the instrument and release the two catches at the top rear inside the instrume
42. prompted enter the net sample weight and insert the bottle The system will purge the bottle for 28 seconds The accessory balance AZI The sensor will again zero and the test begins P N Y990 0082 eliminates possible transcription errors An audible beep will sound when the instrument has when entering the sample completed the test Use the table on page 20 and the weight Itis also faster than FINAL moisture reading on the display to adjust the sample manually taring and size accordingly to optimize test time repeatability and weighing the sample accuracy Page 20 of 51 Data from the Last Test Current Sensor Status COMPUTRAC 3000 MENU SYSTEM In the idle state the Main Test Screen displays menu access keys at the bottom From left to right they are e Memry key for accessing stored memory start selections e Menu key for accessing the Main Menu and e Graph key which changes the display to a graph of collected moisture and rate information Use either the 4 and or A and W arrow keys to make your selection 12 61 7199 89 21 44 OFF LAST i FINAL AHHAH PPM H20 J OTAL HHHH Hpg H20 TIME 44 88 88 TEST MHLE E MEMRY SELECTS PRESS MEMRY READY TO TEST H36 Current Oven Temperature To Select Another Memry Menu Graph 3 1 3 2 3 3 Set of Stored Test Parameters To Access the Main Menu Options To View This Test s Graphical Data
43. re not trying to match KF analysis results perform the following experiment 17 1 Set up the instrument to use time ending and set the time to 20 minutes 17 2 Pick an appropriate temperature ae peak rate See Determining the Test Temperature on page 18 m 25 O 17 3 Runa test and observe the peak rate 2 on the Rate Graph D Zip 17 4 Use a rate ending value smaller than 1 3 the peak rate but larger than E 14 Va peak fate 0 2 micrograms per second Q os 17 5 Press Quit then Accept I 0 17 6 Press Esc several times to return 0 50 100 ae 150 200 250 iH Main Test Menu and verify Figure 15 Example of Graph e The name of the test appears next to TEST and e READY TO TEST appears in the status window at the bottom center of the screen 18 After determining the optimum test parameters repeat the test once to confirm the results 18 1 For performance data run 3 to 5 tests and determine the statistics by e Select Stored Data from the Main Menu e Select Analyze Stored Data e Select the test results you want to analyze and e Press Cale Page 19 of 51 19 19 1 19 2 19 3 19 4 Tare weigh a clean empty sample bottle including the septum and cap Based on the expected moisture content of the sample determine optimum sample size using the chart on page 20 Weigh the loaded bottle and record the weight of the sample Press START When
44. ree of air currents and vibration The surface should not be magnetic and should be located away from doors windows heaters air conditioners and fans Level the balance by turning the front feet to center the bubble in the Level Indicator Turn a foot clockwise to raise that side or counter clockwise to lower that side of the balance Turn both feet together to raise or lower the front of the balance Before making any connections verify that the power VAC requirement shown on the remote power supply is compatible with the AC power outlet to which the balance will be connected First plug the round DIN connector into the rear panel receptacle Then plug the power supply into a grounded AC outlet Do not alter or bypass the ground plug in any way Doing so adversely affects the performance of the balance Page 42 of 51 NOTE Your balance must be plugged in and switched on for at least one 1 hour then calibrated prior to use Please see the calibration instructions on page 52 Press the ON OFF switch and observe the turn on sequence shown below CAL X HI ozt dwt cave Oe H ASE RA bite PCS T LO aiviaiiainiainte Q ct A Figure 35 Turn On Display Sequence During this sequence the balance is doing an automatic systems checkout to verify it is functioning properly Page 43 of 51 The SP150 balance is configured to interface directly with the Computrac 3000 Moisture Analyzer Weight readings at the balance can be transmit
45. s marked by a graphic symbol indicating the method of opening the top cover see Figure 20 on page 38 Push inward to release the safety catch and lift the top cover up with your free hand Remove it and put it in a safe place Hydrophobic Filter 3 The filter will be found near the right a Disk 990 0059 center on top of the manifold assembly Pull the flex tubing off the top of the filter CCW to Remove disk Rotate the filter disk turn CW to Install counterclockwise and lift it off Discard the old filter and replace it with a new one Reattach the flex tubing If f condensed material is visible in the flex tubing replace the flex tubing Note that this is a special type of hydrophobic tubing The proper tubing is available from AZI as AZI Part Number 345 0050 4 Replace the top cover and power cord Figure 21 Filter Disk Location 5 Turn the instrument on and perform a FILTER DRYDOWN and a BOTTLE PURGE see page 10 6 When the drying process concludes the instrument is ready for normal use Page 33 of 51 Q How do I change the injection port septum A This is a simple procedure First obtain a replacement septum There should be one in the accessory kit If none is found call AZI Customer Service at 800 528 7411 or 602 470 1414 for a replacement 1 Turn the instrument off and remove the power cord from its socket CAUTION Line voltage is present under the instrument s cover To pre
46. ted directly to the Computrac 3000 through the null modem cable connection To enable this communication between the balance and the Computrac 3000 1 2 Power to both units should be switched OFF Connect the SPECIAL null modem cable AZI p n 200 0069 to the RS 232 connector at the rear of the SP150 balance Connect the other end of the cable to the balance connector at the rear of the Computrac 3000 Switch the power to both units ON On the Computrac 3000 press the Menu key Use the down arrow key to highlight the SETUP MENU Press the Selct key to access this menu Highlight the EXT BALANCE SETUP option and use the EDIT key to select Computrac as the external balance Press the Accept key to program this option change Select the Comm Check option to verify the cable is connected Use the Esc key to return to the MAIN MENU At the MAIN MENU select the Add Edit Memory Start menu Access the memory start to be edited using the up or down arrow keys and the Select key At the Sample Weight Entry Mode option select the option Digital Balance When a test is run using that memory start parameter the Computrac 3000 will automatically check for data communication The weight readings from the external balance will be displayed on the Computrac 3000 display Follow the display prompts to proceed through the weighing and testing sequence Page 44 of 51 Pressing the ZERO switch at any time returns the display to zeros When
47. ument to print to the RS 232 port Setup Menu External Printer Setup Go to Setup Menu Report Setup Report Control and select text output Go to the screen showing Print and select the report to be printed Set up the computer to receive text information into its serial port at 9600 baud no parity 8 data bits and 1 stop bit 9600 N 8 1 Windows Terminal or Windows 95 Hyperterminal are good choices for this purpose DOS users should use Procomm or Terminate or equivalent utilities Consult the documentation for your communications program for details on how to save input data to a file Q How do I print to a printer A To print test results or stored data 1 Connect the printer to the parallel port on the back of the instrument Use the accessory printer from AZI or a standard PC graphics printer and cable 2 Make sure the printer is supplied with paper the printer power is on and the printer is on line 3 Go to Setup Menu and External Printer Setup Select the Printer Type and LPT port 4 Go to Setup Menu Report Setup and Report Control Select text output 5 Go to the screen showing Print and select the report to be printed Page 31 of 51 Routine maintenance consists of checking the filter for clogging or contamination checking the needles for clogs and cleaning of the flow path between the needle and the filter For clean samples such as most plastic resin pellets this is seldom necessary For very dusty samp
48. vent electrical shock turn off power and remove the power cord when instructed to do so Do not connect the power cord and turn power on until after the cover is secured in place 2 Insert a small probe into the hole at the back of the instrument see Figure 20 on page 38 It is marked by a graphic symbol indicating the method of opening the top cover Push inward to release the safety catch and lift the cover up with your free hand Remove it and put it in a safe place Needle Guide 345 0044 3 The injection port needle guide will be found near the front center on top of the manifold assembly Use a 9 16 wrench to loosen the nut Turn the nut counterclockwise to remove it Lift off the needle guide and the nut The septum is now visible at the top of the injection port Replace it with a new one Replace the needle guide and nut hand tightening it Using the wrench turn the nut 1 4 turn to load the septum Grasp the needle Figure 22 Injection Port Septum guide and make sure everything is Location properly aligned and secure Retaining Nut Supplied with Needl i Septum 4 Replace the top cover and power cord 5 Turn the instrument on and the instrument is ready for normal use Page 34 of 51 Q How do I Calibrate the Flow Sensors A Follow the steps listed below A calibrated flow meter that will measure a flow rate of 100 ml min is required 1 Verify the pressure of the dry gas sup
49. w keys to Escape or Select your choice Note that for some of the later selections the A and VY arrow keys will cycle through available letters and numbers so that names can be spelled and numeric values may be entered Page 22 of 51 ADD EDIT MEMORY STARTS Sets the values for stored test parameters The parameters are stored by name Values are stored for test temperature ending criteria method of entry of sample weight and bottle purge control REORDER MEMORY STARTS Allows the list of stored parameter sets to be rearranged It also deletes sets no longer needed or copies existing sets to another location using the cut and paste method PRINT MEMORY STARTS gt Prints a list of the stored parameter sets on the attached printer or to an attached computer See Printer Setup and Report Setup Report Content to arrange the instrument for this purpose VIEW STORED DATA Allows viewing and printing of all data stored for a given test ANALYZE STORED DATA gt Permits selection of stored data sets for statistical analysis Statistical analysis includes mean standard deviation S D and coefficient of variation C V REORDER STORED DATA gt Rearranges the order of the list of stored data sets It also deletes sets no longer needed or copies existing sets to another location using the cut and paste method DELETE STORED DATA gt Facilitates deletion of selected data sets Selectio
50. water during the test Larger amounts will not significantly improve accuracy and will only add to the test time Smaller quantities will result in faster tests but may degrade accuracy depending on the properties of the sample No damage to the instrument will ensue if samples are too small but samples that evolve more than about 10 000 micrograms of water or other volatiles may result in condensation of water or volatiles in the output flow sensor damaging it 16 3 To estimate sample size you must have some idea of the approximate moisture content of the sample Use the calculation shown below to estimate the minimum sample size 0 05 Expected Moisture Minimum Sample Grams 500u g water Example Expected Moisture is 0 05 Minimum Sample 0 05 05 1 0 grams Page 18 of 51 16 4 Similarly the maximum sample is determined by what size sample will release 1000 micrograms of water 0 1 Expected Moisture Maximum Sample Grams 1000ug water Example Expected Moisture is 0 05 Maximum Sample 0 1 05 2 0 grams 16 5 These are only guidelines Experiment with your sample to refine the size estimates to achieve your desired speed and accuracy Note that if you are using a rate ending criterion and the peak moisture rate is less than 5 times the rate threshold the sample sizes should not be allowed to vary more than about 10 Larger variation of sample size will lead to a larger variation of results 17 If you a
51. y part of the instrument Methanol interferes with calibration of the RH sensor and is very difficult to remove once introduced into the flow system Page 32 of 51 The Hydrophobic Filter on top of the manifold is expected to be replaced when it becomes contaminated Replace it only with the Hydrophobic Filter available from Arizona Instrument AZI Part No 990 0059 When replacing a filter it is good practice to flush the new filter with dry carrier gas to remove moisture adsorbed to the interior of the filter After replacing the filter on its holder replace the top cover before connecting the instrument to its power source Turn the instrument on and when READY TO TEST appears run the drydown procedure outlined on page 10 with a clean dry empty sample bottle When this procedure ends the system is ready for reuse QO How do I change the filter A First obtain a replacement Hydrophobic Filter AZI Part Number 990 0059 There should be one in the accessory kit If none is found call AZI Customer Service at 800 528 7411 or 602 470 1414 for a replacement 1 Remove the power cord from its socket CAUTION Line voltage is present under the instrument s cover To prevent electrical shock turn off power and remove the power cord when instructed to do so Do not re connect the power cord and turn power on until after the cover is secured in place 2 Inserta small probe into the hole at the back of the instrument It i
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