cheminstruments loop tack tester model lt
Contents
1. CONTROL KEYS control the various features of the data acquisition and operating system There are 5 keys consisting of Select Enter UpT Downy and Units RS232 CONNECTION data output port for downloading test data oe 8 op Tack Tzster LT 1000 Control Keys Units Indicator Photo 2 LT 1000 OPERATION THEORY OF OPERATION A pressure sensitive adhesive laminate sample is formed into a standard loop This loop with the adhesive on the outside is brought into contact with a standard test panel and retracted at a set speed An electronic load cell measures the tack force then feeds the information to a data acquisition unit The data acquisition unit collects the data from the load cell and stores these data points in memory for use in calculating the maximum minimum and average values The data acquisition unit assigns a file number and saves the results in memory This data can be downloaded through the RS232 connection port to an appropriate receiving program on your PC POWER UP Turn on the master power switch located on the back panel of the control cabinet directly next to the power line receptacle The onboard computer will go through a self test and then display the high peak force for the last test The system is now ready for conducting the next loop tack test MENU FORMAT There are three distinct Menus for the LT 1000 They are the Run menu Print menu and Setup menu Each menu has an indicator light t2. This action will provide you access to your hard drive and other media connected to your computer You can now select a file to open 21 SAVING DATA TO EXCEL Ez Lab allows you to save your test data files in an Excel format for additional statistical review and display of the numerical values The following procedure is used to accomplish this feature 1 Select the Review Data button on the Operating Screen 2 Select the file that you wish to save in an Excel format 3 Click on the file button located at the upper left corner of the Data Review screen See Screen 10 Data Review 4 Select Save as xls 5 You will be able to select a location for saving the file and click OK You can now open that data file from Excel EXIT RS 232 MODE To return the LT 1000 to the stand alone operating mode simply press the SELECT and ENTER control keys together for 3 seconds 22 MAINTENANCE As with any precision equipment it is important to provide care and maintenance to ensure proper performance and long life The LT 1000 Loop Tack tester is a durable and well designed piece of testing equipment requiring only minimal maintenance Normal and weekly general cleaning is all that ChemInstruments recommends be done to maintain your LT 1000 TROUBLESHOOTING In the unlikely event you experience problems with your LT 1000 Loop Tack tester the following list of probable causes and corrective procedures may provide a solu
3. T key to select the Beep mode 3 When the display shows bE press the Enter key to access the settings 4 Press the Up or Down J keys to turn the beep feature off or on 5 After selecting the appropriate setting press the Enter key to activate your choice and return to the Run menu RUNNING A TEST Loop tack tests are conducted according to written test methods such as ASTM PSTC TLMI and others These tests are preformed to determine the tack adhesive values of the selected PSA material as it is removed from a stainless steel test panel The LT 1000 will accommodate test panels with dimensions of 1 wide by any length Make sure the load cell has been calibrated before conducting a test TEST PROCEDURE The ChemInstruments Loop Tack Tester is very simple to use The following is the correct procedure for running a Loop Tack Test 1 Thoroughly clean a 1 x 6 test panels with a strong solvent such as methyl Alcohol or Methyl Ethyl Ketone The test panel should be made of 304 Bright Annealed Stainless Steel with a surface height roughness of 2 micro inches 1 micro inch 2 Insert a 1 x 6 test panel into the panel holder Suitable test panels are available from ChemiInstruments 3 Remove the Grip by removing the release pin Carefully slide the Grip straight down until it is clear of the mounting yoke 4 Cut a test specimen 1 x 5 with the long dimension in the machine direction 5 Completely remove
4. and Work have also been computed 18 These last three values are not displayed on the graph with the High Low and Average However they are available by selecting and clicking on the button marked Statistics See Screen 5 Statistical Graph They also appear in the Review Data screen and with the Data Set Information when the Graph is printed In addition to this individual test statistics there is the ability to Tabulate and Overlay multiple test data files Please see the next section Screen 5 Statistical Granh TABULATE AND OVERLAY There are two Statistical analysis report formats available to the EZ Lab System user Tabulate and Overlay allow you to group multiple test files in a single report Access to both of these formats is located on the Operating Screen at the bottom There is a button identified as Tabulate and one identified as Overlay Clicking on either of these buttons will activate these features The Tabulate feature allows you to select up to 99 files from your stored test data files and present them together in a spread sheet format In addition there are four summary values established at the bottom of the sheet These four summary statistics are the Average of averages the average Work value the Standard Deviation of all the Averages and the Variance of the averages The Overlay feature allows you to select up to 5 individual test files for display on a single graph The statistical data fro
5. 3746 35270 BBE 2383943 571182 1076257 1156325 1816 2541697 3044318 3271528 P ewe om Ce Screen 7 Data Tabulate Notice the summary statistics at the bottom of the sheet You may click on the Print button to print this screen There is also a button to save this list of test files in tabulated form as a separate file for later review When finished simply exit back to the Operating screen for continued testing or other choices After selecting the files to be overlaid click on the Graph button This will open a new window with the selected files graphed in individual colors on the same graph See Screen 8 Overlay OVERLAY 1 From the Operating Screen select the Overlay button at the bottom of the screen This will open the file selection window See Screen 6 Select Files 2 The windows on the left of the Select Files screen show the drive and file path for the test files that appear in the window on the right Simply select the desired files in the window on the right and click on the Add to List button at the bottom These selected files will now appear in the window at the bottom as selected files 3 Sealed tes v tebulste mon any Mean umn number of fies to sekectis 13 Lisette CTRL end SUIT keys of cick md diag to sek fies E Display ndvidualciste tes CO C Display prencusty savectnty bets tes 30 ARO de A Fics to Tabuete 4 20 Add to List Ls pri En Sc
6. CHEMINSTRUMENTS LOOP TACK TESTER MODEL LT 1000 OPERATING INSTRUCTIONS PRODUCT DESCRIPTION eo 2 UNPACKIN Gaia 3 ASSEMBEY e ds e ar alo de 4 Key Components tata 5 E eee eons 6 Theory OROPESA A eee 6 I KOAT tee Rent ne at et ne PREP RRR CAPPER ARI ER TWEE CONEY TAN A AE PRET 6 Menu Format tienta abla lidad 7 Load Cell Calibration aia a ia 8 Calibration Procedure music at 8 A E 9 Audible ECC o E EAEE E E EE ENEE E EEEN E 9 Runninea Testi ii a a a R E ates 10 Test Procedure op il Ra ie T a E aa te 10 Grip Operation ara EE 11 File Manara 12 Reviewing Test Data nai id 12 Downloading Test Dita Sve cca hele e Ble i a 13 Data Stara me uni sides 13 Deleting Test Dales A iio 14 EZ GAB SY STEM saps settee o e eo ed duo ab 15 Installation ii 15 Remote Opera A ii BA e ee Bae 16 CAD A 16 Runnin A Testi deta See Wild aoe te Nae A tet nats 17 Statistical Analysis 00d E EE Gis 18 Tabulate and Ova 19 Tabulate estss ta ar E ei a E E Sai ei 19 Overlay a A ate sehen a eee 20 Review Test Data dd e des ed dd 21 Saving Data tO Brel iaa idas 22 EXt RS a A O 22 MAINTENANCE cita 23 Trouble Shooting sai 23 WARRANTY pincer e ed es ert e doo as De a aa a 24 Created on 8 2 2002 2 13 PM PRODUCT DESCRIPTION Congratulations on the purchase of your new ChemInstruments LT 1000 Loop Tack Tester This versatile user friendly carefully designed instrument allows you to determine loop tack values of adhesive laminates The unit has the following
7. Z Lab This will open the EZ Lab System program and display the Main Screen See Screen 1 EZ Lab Main Screen 12 Select the Comm Setup button and select the appropriate port for your computer connection Usually comm 1 13 After selecting the appropriate port select the LT 1000 button to activate the program The operating screen will appear on your display See Screen 2 Operating Screen REMOTE OPERATION EZ Lab is designed to provide all the necessary instructions on your computer screen However the following information will provide additio nal insight on the use of this system iia The main screen is divided into 2 Ps Tat SS KA AAA sections See Screen 2 Operating Screen yas The left section titled Load Setup is for the Tet Dats calibration of the load cell and choosing the Parade Stat Pressing thes bation mimes srt units of measure The right section titled Foie Run Test is for running a test displaying Bounds r F tjentara Seu test data and system status Epi Daie Tetulis Date Ostos Deto m Screen 2 Operating Screen CALIBRATION In order for the load cell to measure forces correctly it is necessary to calibrate the system The following procedure describes the calibration process 1 Move the Load Cell Assembly to the idle position 2 Select the Calibrate button in the Load Setup section of the main screen 3 Follow the on sc
8. ct the power cord to its receptacle on the backside of the control cabinet Complete the connection by inserting the male end of the power cord into an appropriate AC outlet Notice that the on off power switch is located directly beside the power cord receptacle on the backside of the test frame See Photo 1 LT 1000 Cabinet Back The ChemInstruments LT 1000 is now ready for calibration and use Before proceeding with calibrating the LT 1000 it is advisable to become familiar with the Key Components of the LT 1000 These Key Components and a brief description of their function follow in the next section Photo 1 LT 1000 Cabinet Back KEY COMPONENTS See Photos 1 and 2 POWER SWITCH is located on the back panel of the control cabinet directly beside the power cord connection TEST PANEL BRACKET provides a holder for a standard 1 inch wide test panel LOAD CELL ASSEMBL Y consists of the mounting bracket for the load cell with grip GRIP secures the test sample loop to the load cell MAST the track that the load cell assembly travels during the testing cycle DIGITAL DATA DISPLA Y provides test data results and system status information PROGRAM STATUS INDICATOR these three LED lights identify the operating status either Run Print or Setup Menus are active when LED light is on UNITS INDICATOR there are five LED lights indicating the units of measure for the data collected They are Kilograms grams Newtons Pounds and ounces
9. features Automated test sequence Selectable units of measure Kilograms grams Newtons Pounds amp ounces Stores up to 20 test in memory Collected test data can be exported via RS232 port Stored test data is available for review Compatible with optional EZ Lab System UNPACKING ChemlInstruments has made every effort to ensure that the LT 1000 arrives at your location without damage Carefully unpack the instrument and check for any damage that might have occurred during shipment If any damage did occur during transit notify the carrier immediately The ChemInstruments LT 1000 consists of the following parts e The test frame which includes the motor drive mechanism and the data acquisition system e An envelope with this manual e Grip and fastening pin Make sure all of these components are present before discarding packaging material ASSEMBLY Carefully remove the test frame data acquisition assembly from the packaging and set it on a sturdy bench top The space required for the unit is approximately 12 wide x 15 deep x 16 high As with any precision piece of test equipment it is preferable to locate the LT 1000 in an area where temperature and humidity are controlled to standard conditions 72 2 F 50 5 relative humidity Attach the Grip to the load cell mounting yoke using the small straight pin to hold it in place Make sure the sample grip is mounted with the flip lever toward the front Conne
10. ge mode The Display will show either St On or St OFF 4 Pressing the Up T or Down J key will toggle the Display between St On and St OFF When the St On is selected the LT 1000 will store up to 20 individual tests in files 5 Press the Enter key to record the setting and return to the Run menu 13 DELETING TEST DATA The storage limit of the LT 1000 memory is 20 tests When this limit is reached an error message SE FULL is displayed It is then necessary to delete test data from the memory in order to allow additional test data to be stored Deleting test files before the memory is full is also accomplished with this procedure 1 Press the Select key to access the Print Menu The Display will show the letter P indicating Print mode 2 Press the Up key until dL is displayed Then press the Enter key to access the Delete mode The Display will show dl OO where the indicates the number of test files stored in memory 3 Pressing the Select and Enter keys together for 3 seconds will delete the stored test files and return the Display to the Run Menu and P mode 14 EZ LAB SYSTEM INSTALLATION Your LT 1000 has the dual capability of operating as a stand alone system or as a slave test platform with the remote Windows EZ Lab system on your computer The following procedure describes how to use the LT 1000 as a slave test platform with the remote Windows EZ Lab sy
11. hat will be on when that menu is active Within each menu there are a series of modes that display the data collected calibration sequence and data storage transfer Each of the three menus uses the Up T and Down J arrow keys to access the modes within the menu When the desired mode is displayed the Enter key is used to access the parameter settings for that mode Once a parameter selection is made the Enter key is used to record the setting and return to the Run menu The following is an outline of the three menus and the modes contained within each menu Use this chart to quickly identify the location and proper path to access any of the settings RUN MENU Modes I Instantaneous force Average of last test Maximum of last test c gt Minimum of last test PRINT MENU Modes P Data transfer to PC St Data storage on off dL Data storage delete SETUP MENU Modes F Force LC Low calibration HC High calibration rs Remote bE Beep on off There is also a Units key that allows you to change the unit of measure to any of the five choices Kilograms grams Newtons Pounds amp ounces The green LED lights to the right of the display indicate the current active unit of measure LOAD CELL CALIBRATION It is important to calibrate the load cell to ensure that reliable data will be gathered A calibration procedure is built into the software of the LT 1000 This procedure should be followed upon first use of t
12. he LT 1000 and whenever necessary thereafter The following is the step by step procedure for calibrating the load cell MAKE SURE THE LT 1000 HAS BEEN ON AND RUNNING FOR 20 MINUTES BEFORE PROCEEDING WITH CALIBRATION TO AVOID THIS WARM UP PERIOD LEAVE THE LT 1000 POWER ON WHEN NOT IN USE CALIBRATION PROCEDURE 1 Move the Load cell assembly containing the load cell to the upper idle position Make sure the engaging pin is activated to lock the assembly in this position 2 Confirm that the Grip is properly attached to the load cell mounting yoke and secured by the mounting pin 3 Simultaneously press the Select and Enter keys for 3 seconds to access the Setup menu 4 When the F is visible on the Display press the Enter key to access the calibration sequence 5 At the LC display determine the Low Offset Value desired Typically 0 00 Make sure that you do not have a weight hanging from the Grip and press the Enter key The display will change to HC for high calibration value NOTE the calibration sequence defaults to grams as the unit of measure Make sure your calibration weights and entries are in grams 6 At the HC display select a calibration weight close to the maximum expected test value and hang that weight in the mouth of the Grip so that it hangs straight down 7 Set the High Offset Value on the Display to correspond with the selected calibration weight You can change the displayed value by pressi
13. ight position See Figure 2a Grip Closed The grip opening may be adjusted by rotating the lever clockwise for thinner samples counterclockwise for thicker samples al Grip Closed b Grip Open Figure 2 Grip Operation NOTE The grip is attached directly to the load cell Do not move the grip sideways or up and down When opening and closing the grip support it with one hand and operate the lever with the other hand to avoid damaging the load cell For proper operation of the load cell it is necessary for the grip to be mounted with a space between the load cell housing and the grip WARNING Rotating the Grip on the threaded mounting rod causing the Grip to come in contact with the wall of the load cell housing will damage the load cell There must be a physical gap maintained between the Grip and the load cell housing for the load cell to function correctly DO NOT TIGHTEN THE GRIP AGAINST THE LOAD CELL HOUSING 11 FILE MANAGEMENT There are four file management functions available in the LT 1000 They are Review Download Store and Delete These four functions are available in three different modes within the Print Menu The following sections describe each of these modes and the procedure for enacting each REVIEWING TEST DATA When the Data Storage is turned on test data is maintained in the memory of the LT 1000 This data is accessible for reviewing downloading and deleting The following procedures will de
14. m each of the selected files is also presented in the tabulate format with the four summary values established at the bottom of the sheet The following procedure describes how to use these functions TABULATE 1 From the Operating Screen select the Tabulate button at the bottom of the screen This will open the file selection window See Screen 6 Select Files 2 The windows on the left of the Select Selog thes totabslete tom ary path Madrun sunbe otfasto sadac in 99 Files screen show the drive and file Ue fe CTRL und SHPT Kaye i kx end denta eri tes Coe 7 ONS path for the test files that appear in the Patas window on the right Simply select the A desired files in the window on the right and click on the Add to List button at Files to Tabiueta the bottom These selected files will now appear in the window at the edt to List Sant Beni toon Screen 6 Select Files bottom as selected files 19 CETL 3 After you have selected all the files to be tabulated simply click on the Tabulate button at abil est ket 00 1 601 Sb de a D biic CET Lab TesOetyil000 2c Iboo cat 693 37275 159 the bottom This action will open a new window with the selected files listed in a spreadsheet format See Screen 7 Data Tabulate aa 2005 524 427125 ODO 6011 192 7 too 75 206 007 1274053 thoDde 1001 634 RN wos emor WI Sol sbo ds 71806 105344 167 0500494 1556977 2
15. ng the UpT and Down J keys 8 Make sure the calibration weight is completely at rest and then press the Enter key The display will change to the P mode showing the current reading of force 9 Verify the calibration by hanging a different calibration weight on the Grip Confirm that the instantaneous force reading is the same as the selected weight hanging from the Grip 10 Repeat the calibration procedure if necessary SCALE A current force reading is available by accessing the I mode in the Run menu To access this mode simply press the Up key until the display shows I where the will be the current force being measured This reading should be used only as a quick reference NOTE It is important to remember that the load cell is measuring forces at a rate of 400 times per second The rate of display on the display screen cannot cycle at this speed Therefore the value in the Scale reading is only one of the many data points that the load cell is measuring and it is not necessarily representative of the total data reading AUDIBLE BEEP The LT 1000 has an audible beep feature that sounds each time a Control Key is pressed This provides confirmation that electrical contact has been made by the key This audible beep feature may be turned off by following this procedure 1 Simultaneously press the Select and Enter keys for 3 seconds to access the Setup menu 2 From the Setup menu press the Up
16. program on a PC This procedure is easily accomplished but requires three additional items besides the LT 1000 You will need a RS232 9 pin serial cable a PC and an appropriate receiving program such as ChemInstruments EZStats 1 Connect the RS232 cable to the 9 pin connector on the back of the Display Cabinet of the LT 1000 See Photo 1 LT 1000 Cabinet Back Connect the other end of the cable to your comm port on your PC usually comm 1 Access the software program EZStats and proceed to the Capture Data mode Press the Select key to select the Print menu At the P display press the Enter key EES a ARS Press the Down 4 or the Up T key to select the stored test file you want to download NOTE Make sure you have selected Capture Data in your EZStats program before proceeding to the next step 6 After selecting the test file number to be downloaded press the Enter key to start the download of the test file Downloading will only take a few seconds and the Display will count down the number of data points being transferred DATA STORAGE The LT 1000 can store test files in the memory or operate without storing test files The following procedure describes how to turn the memory storage function on and off 1 Press the Select key to select the Print Menu The Display will initially show the P mode 2 Press the Up 7 to select the St storage mode 3 Press the Enter key to access the Stora
17. reen 6 Select Files As with any graph screen in EZ Lab you will find the familiar left and right margin cropping bars allowing you to select smaller areas of the graphed data for review 5 At the Overlay graph screen there are buttons to save this file for latter review and a button to access the files in tabulated format Simply select either button and notice the summary statistics at the bottom of the tabulate sheet CHEZ Lab Tew DESAT Eo 1 Sh de CEZ Lab Tea Drait 000 1 e So de When finished simply exit back to CEZ Lai team ce 200 e CAET Lab Tena T0081 Ec 1 Shoop the Operating screen for continued testing or other choices Sereen 8 Overlay REVIEW TEST DATA All of the test data that is collected in the EZ Lab system is available for review The following procedure describes the method of retrieving and reviewing your test data 1 From the Operating Screen select the Review Data button See Screen 2 Operating Screen This action will open the Data Review screen See Screen 9 Data Review This screen will list the test data files that have been saved in the program s data file folder Select the file you wish to review Screen 9 Data Review by clicking on the name Then select the action button to the right Graph or Delete Should you desire to access other saved files from another location select file located in the upper left of the Data Review screen
18. reen instructions exactly and make sure to hang the appropriate weight on the Grip when entering the high calibration value 4 Verify the calibration by hanging some other known weight on the Grip and checking the display in the current load field 16 RUNNING A TEST The test procedure is the same when using EZ Lab as with the stand alone system The procedure for running the test is as follows 1 2 10 Prepare a sample loop and place it into the Grip of the Load Cell Move the load cell assembly down from the idle position to the test position Select the Run Test button See Screen 2 Operating Screen Push the Start button The LT 1000 will automatically conduct the test and collect the data At the completion of the test the display of your computer will change from the Main Screen to the Data Set Information screen See Screen 3 Data Set Information You may enter as many notes as there are fields You may even select the file name to be automatically incremented with each additional test You may also select an additional file folder to save your test data The entries you make on this screen will be the default entries for the following test Fie Mone Tust ite sara Tewtdsthod pal tagh fa SonpleSive fi ince Dil E amp lire i j Side frien Tordna imina Falura Moce omne Pamela aon Notes Data Set Stored nh Following F FP Save Abm Disket
19. scribe how to review data contained within each test file 1 Press the Select key to access the Print menu The Display will show the letter P indicating Print mode 2 Press the Enter key to access the Print mode The Display will show P where represents the number of the test currently stored in memory 4 Pressing the Down J and Up T key will allow you to select any of the individually stored test files each one indicated by a different number 5 After selecting the file number to be reviewed press the Select key two 2 times to access that particular file s data The Display will change to the P or current force reading 6 Pressing the Up T key will change the display from I to Average High and then Low The numerical values displayed are the test results stored for the selected test file in the Print mode 7 A new test can be run while in the review mode Simply set up your test material in the Grip make sure you have a clean test panel in place and push the Start button The Display will revert to the current test data at the conclusion of the test NOTE The current test data Average High and Low values are always accessible in the Run menu by pressing the Up key Each push of the Up key changes the display in the following sequence current A average H high and L low 12 DOWNLOADING TEST DATA Any data stored in a test file can be downloaded to an appropriate receiving
20. stem Should you have any problems or questions after following this procedure please call ChemInstruments at 513 860 1598 or contact us by email at ci fuse net 1 2 3 4 10 Insert the EZ Lab program disk into the computer designated to run the LT 1000 Select RUN Drive Setup exe Follow the on screen instructions to complete the software installation Connect the LT 1000 s RS232 connection to the appropriate port EZ Lab System Cheminstruments Leador in Laboratory Tasting Mochrie Design end Mandectun usually com 1 on your computer with the provided 9 pin serial cable Enter the setup mode of the LT 1000 cid Cee Ere T100 HER 000 mm simultaneously for 3 seconds aaa to Use the UP key to cycle through the test platform by pressing and holding the SELECT and ENTER buttons Pest atthe Chon sutants intemahonal Network menu until rS is displayed Press the ENTER key Use the UP key to cycle the display from OFF to ON Press and hold the SELECT and ENTER buttons simultaneously for 3 seconds to activate the RS232 remote operating mode The LT 1000 should display rS232 The control of Screen 1 EZ Lab Main Screen the LT 1000 test platform is now on your computer On your computer open the EZ Lab program This file will be located in a folder titled EZ Lab on your C drive The file is titled EZ Lab 15 11 Double click on the file E
21. te Saye fikt Speatad Fodar Beiow Screen 4 Test Data Graph If you choose to not save the test data simply select the Abort button Select the Done button when finished and the next screen will show your test data in graph form See Screen 4 Test Data Graph The graph provides a cropping feature Notice the red vertical lines at the left and right sides of the graph You may move these lines by selecting the up and down arrow keys for both the Left Time and Right Time 17 11 12 13 14 15 Selecting the Recalculate button will re graph the data between the two red vertical cropping lines Selecting the Auto Scale button will graph the data on a vertical scale that begins and ends with the values of the data being displayed This feature provides dramatic presentation of cropped graphs You may recalculate up to three times This cropped data graph may be saved as a file revision The button for saving the file is located at the lower right of the display when available Select the Done button and proceed to your next test by repeating this procedure Any time the Print button appears you may select it to print the current display STATISTICAL ANALYSIS At the completion of each test basic statistical analysis values are established In addition to the graphed data with the High Low and Average values the Standard Deviation Variance
22. the release liner from the specimen 6 Bend the specimen back onto itself being careful not to crease it forming a teardrop shaped loop with the adhesive surface towards the outside Masking Tape 7 Fasten the ends together using a strip of 1 2 wide Adhesive masking tape See Figure 1 Loop Tack Specimen ot 8 Insert the tape loop into the specimen Grip until it touches the spring block near the center of the Grip to ensure squareness of the sample 9 Replace the Grip using the release pin to secure it in the Figure I Loop Tack Specimen mounting yoke 10 Support the Load Cell Assembly to prevent the 10 assembly from falling while pulling on the Release Button to lower the Load Cell Assembly to the test position 11 Turn the Power Switch to ON 12 Press the Start Switch and hold it until the Load Cell Assembly starts to move The machine will complete one full test cycle and automatically stop when finished NOTE Since the testing area is one square inch a 1 x 6 test panel may be used several times After completing a test slide the test panel to one side in order to expose a clean spot on the panel Ensure that the footprint of nylon screws from previous test do not interfere with current test GRIP OPERATION The grip opens by moving the lever to its down position See Figure 2b Grip Open Insert the free end of the sample into the open grip and close the grip by moving the lever to its upr
23. tion SE Full message 20 test have been collected Refer to Delete No Data collected Sample not attached See Test Procedure Data measurement Improper calibration calibration Check calibration calibration consistently Low High O calibration a en to load cell calibration Calibration drifts Bad or damaged load cell Replace load cell 23
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