User Manual - DeFelsko Corporation
Contents
1. PosiTector App Wirelessly transfer measurement data to your Apple iOS or Android smart device Create customize and share professional PDF reports quickly and easily The PosiTector App is available on the iTunes App Store and Google Play For more information on the PosiSoft suite of software visit www defelsko com posisoft 14 Power Supply Charging PosiTest AT M manual Power Source Built in rechargeable NiMH battery 60 hours continuous with full charge The built in rechargeable NiMH batteries are charged using the included USB AC power supply charger Ensure batteries are charged prior to use The battery icon will blink while the instrument is charging and disappear when fully charged The charging process will take up to 14 hours depending on remaining battery power Alternatively the AC power supply or any computer USB port can be used to power and charge the instrument Do not attempt to remove or replace the PosiTest AT M internal NiMH battery pack In the unlikely event power issues are experienced please contact our technical support for assistance PosiTest AT A automatic Power Source Built in rechargeable NiMH battery gt 200 pulls with full charge The built in rechargeable NiMH batteries are charged using the included AC power supply charger Ensure batteries are charged prior to use The USB port will not charge or power the PosiTest AT A The charging process will take 2 3 hours dependi2. Posilest AT Pull Off Adhesion Testers H osiTest AT A automatic p Posi Test AT M manual Ct Si DS LUA bo A Ay a We P oe The Measure of Quality Introduction The PosiTest AT Pull Off Adhesion Tester measures the force required to pull a specified test diameter of coating away from its substrate using hydraulic pressure The pressure is displayed on a digital LCD and represents the coating s strength of adhesion to the substrate In accordance with ASTM D4541 D7234 ISO 4624 and others the PosiTest AT evaluates the adhesion pull off strength of a coating by determining the greatest tensile pull off force that it can bear before detaching Breaking points demonstrated by fractured surfaces occur along the weakest plane within the system consisting of the dolly loading fixture stub glue coating layers and substrate This quick guide summarizes the basic functions of the instrument Download a full instruction manual at www defelsko com manuals Basic Steps to Perform a Pull Off Test Dolly amp Coating Preparation The dolly and the coating are cleaned and abraded see pg 2 Glue amp Dolly Application The glue is prepared and applied to the dolly The dolly is is then adhered to the coated surface and the glue is allow ed to cure see pg 2 Test Area Separation optional The test area of the coating is isolated from the area surrounding the dolly by cutting or dri
3. Glue failures typically occur when the glue is improperly mixed or the coated surface has not been adequately prepared see pg 2 The PosiTest AT A model provides an interface to document the nature of the fracture for each pull off test see pg 10 Fracture results are included in test reports 4 PosiTest AT M Manual Actuator Handle Pump Handle USB Data Transfer Power Port Quick Coupling The PosiTest AT M powers up and displays dashes when the button is pressed To preserve battery life the instrument powers down after 5 minutes of no activity Quick Guide 1 Open pressure relief valve completely turn counter clockwise 2 Connect the actuator to the dolly 3 Close the pressure relief valve completely turn clockwise 4 Zero Press the C button 5 Pump pressure into the system until the dolly pulls 1 Ensure the pressure relief valve is completely open turn counter clockwise 2 Push the actuator handle completely down into the actuator assembly Place the actuator over the dolly head and attach the quick coupling to the dolly by reaching through the holes in the actuator and lifting the coupling Release the quick coupling when the dolly head is completely engaged 5 PosiTest AT M 3 Close the pressure relief valve on the pump completely turn clockwise PS button Select the pressure units by pressing the psi mPa button The instrument will maintain these settings even
4. excess glue from the dolly application process This typically prevents a larger area of coating from being pulled away from the substrate resulting in a higher pull off pressure Cutting Instructions 1 Cut through the coating around the edges of the dolly with the included cutting tool removing any excess glue 2 Clear away any debris from the cutting process Cutting may induce coating surface flaws such as microcracking that may alter test results For coatings with strong lateral bonding it is recommended to cut completely through the coating down to the substrate Drilling Template When testing very thick coatings an optional drilling template may be preferred Analysis of Test Results Upon completion of the pull off test the dolly and coated surface should be examined In addition to pull off force many National and International standards such as ASTM D4541 and ISO 4624 require the nature of the fracture to be recorded Dolly Face Coated Surface m Cohesive fracture fracture occurs within a coating layer Same coating on dolly face and coated surface m Adhesive fracture fracture occurs at the interface between layers coating on dolly face differs from surface m Glue failure visible separation of the glue from itself the coating or dolly no coating visible on the dolly face Dolly Cohesive fracture Adhesive fracture Glue failure intercoat between layers coating glue
5. How to Measure Prepare the Instrument 1 Push the actuator handle completely down into the actuator assembly Place the actuator over the dolly head and attach the quick coupling to the dolly by reaching through the holes in the actuator and lifting the coupling Release the quick coupling when the dolly head is completely engaged 2 Press the 1 button to power up the instrument if necessary 3 Verify Pull Parameters pg 11 are set to the preferred dolly size pull rate pull limit and hold time Change if necessary NOTE if recording of test results is desired a memory batch must be opened prior to the test Select New Batch from the Memory menu pg 11 8 PosiTest AT A Perform the Test 4 Press the L button to initiate the test m The instrument begins building pressure priming stage and a green animated arrow up appears on the display When the priming pressure is achieved the LCD starts displaying pressure over time on the pull chart Refer to step 5 pg 6 for Priming Pressures m Pressure build up stops when the dolly is pulled from the surface the pull limit has been reached or when the button is pressed The maximum pressure value will blink on the display and a red animated arrow down will display while the pump retracts the actuator AN caution To avoid injury keep fingers away from the quick coupling and actuator assembly until the pull test has completed and the actuator has been fully retr
6. TM D7234 ISO 4624 and others Specifications Resolution 1 psi 0 01 MPa Accuracy 1 Full Scale i Max Pull Off Max Pull Off Holy Ske u Pressure AT M Pressure AT A 10 000 psi 70 MPa 14 000 psi 96 MPa 6 000 psi 40 MPa 7 000 psi 50 MPa 3 000 psi 20 MPa 3 500 psi 24 MPa 500 psi 3 5 MPa 560 psi 3 8 MPa requires the use of a 50 mm stand off The instrument also measures in N mm and Newtons unit of force See Units pg 12 16 Returning for Service There are no user serviceable components Any service must be performed by DeFelsko Corporation If you need to return the instrument for service describe the problem fully and include reading results if any Be sure to include contact information including your company name company contact telephone number and fax number or email address Website www defelsko com support Limited Warranty Sole Remedy and Limited Liability DeFelsko s sole warranty remedy and liability are the express limited warranty remedy and limited liability that are set forth on its website www defelsko com terms DeFelsko The Measure of Quality www defelsko com 2015 DeFelsko Corporation USA All Rights Reserved This manual is copyrighted with all rights reserved and may not be reproduced or transmitted in whole or part by any means without written permission from DeFelsko Corporation DeFelsko PosiTector PosiTest and PosiSoft are trademarks o
7. acted Press the stop button to abort the pull test at any time NOTE Setting a Pull Limit or stopping the test before a fracture occurs is useful when the coating strength exceeds specified requirements 5 Remove the dolly from the actuator assembly 6 Examine the dolly and surface to analyze the result pg 4 Recording the Result If a memory batch is open the maximum pressure result is automatically stored into memory pg 11 Pass fail pull parameters date and time are also recorded The nature of the fracture cohesive adhesive glue batch and reading notes can also be recorded Swipe the touch screen horizontally or use the left right buttons to navigate to the appropriate view and select Edit See Memory Views pg 10 All stored measurement data can be accessed using PosiSoft solutions pg 13 9 PosiTest AT A Memory Views carousel When a memory batch pg 11 is open a carousel appears at the top of the display Views are represented by dots the solid dot indicates the current view Swipe horizontally to navigate between views or vertically to move between batch readings Alternatively the directional buttons can be used for navigation Six views are available Main View Reading List Reading Summary eo E S DE E L EE SE SE SE B3 B3 4 Page 1 1 2012 02 26 00 39 34 Pressure Passfail CI 2251 05 1082 iita ap Duration C2 23 1405 1000 Dolly Size 20mm m 00 23 54 1000 Rate 150 psii
8. after the button is pressed As required verify and adjust the dolly size by pressing the A 4 Zero the instrument BEFORE pumping by pressing the button Eoi This prepares the instrument for the test by clearing the display and zeroing the instrument 5 Prime the pump slowly until the displayed reading approaches the priming pressure The priming pressure is the point that the instrument begins calculating and displaying the pull rate It is also the pressure at which the ability to store readings is enabled Priming pressures for the various dolly diameters are 400 psi 2 8 MPa 200 psi 1 4 MPa 100 psi 0 7 MPa default setting 50 psi 0 4 MPa For optimum results prior to exceeding the priming pressure return the pump handle to its full upright position and then complete a single continuous stroke at the desired pull rate until the actuator separates the dolly from the coating 6 Open the pressure relief valve and remove the dolly from the actuator assembly 7 Readings may be stored into memory by pressing the EER button memory storage for up to 200 pulls Press again to review stored readings Stored measurements can be accessed using our PosiSoft 3 0 desktop software pg 14 6 PosiTest AT A Automatic Touch Screen Display AC Adapter Port Charges batteries and powers instrument 4 The PosiTest AT A powers up when the E button is pressed To preserve battery life the instrument power
9. ent data is automatically transfered Select Send Now to manually transfer batches useful when switching between smart devices WiFi Allows wireless communication with devices such as tablets smart phones and computers connected to your local wireless network or portable mobile hot spot See www defelsko com WiFi Updates Determines if a software update is available for your instrument See www defelsko com update The instrument will perform a Reset after an update pg 12 13 Accessing Stored Measurement Data PosiSoft solutions for viewing analyzing and reporting data PosiTest AT all models PosiSoft 3 0 Desktop software for downloading viewing printing and storing measurement data Customizable reporting tools allow you to add pictures and screen captures notes and annotations add or remove sections drag and drop change headings and more Save your custom layouts as templates for future use PosiTest AT A In addition to PosiSoft 3 0 the PosiTest AT A is also compatible with the following solutions PosiSoft USB Drive connect to a PC Mac using the supplied USB cable to access and print stored readings graphs notes and screen captures No software or internet connection required USB Drive must be selected see pg 13 PosiSoft net a free web based application offering secure centralized storage of instrument readings Access your data from any web connected device Go to www PosiSoft net
10. f DeFelsko Corporation registered in the U S and in other countries Other brand or product names are trademarks or registered trademarks of their respective holders Every effort has been made to ensure that the information in this manual is accurate DeFelsko is not responsible for printing or clerical errors 17 DeFelsko The Measure of Quality www defelsko com 2015 DeFelsko Corporation USA All Rights Reserved This manual is copyrighted with all rights reserved and may not be reproduced or transmitted in whole or part by any means without written permission from DeFelsko Corporation DeFelsko PosiTest PosiTector and PosiSoft are trademarks of DeFelsko Corporation registered in the U S and in other countries Other brand or product names are trademarks or registered trademarks of their respective holders Every effort has been made to ensure that the information in this manual is accurate DeFelsko is not responsible for printing or clerical errors
11. he maximum performance capabilities of the pressure system under ideal conditions Other glues may be preferred based on requirements such as cure time coating type working temperature and pull off strength Quick curing one part cyanoacrylates Super glues may be sufficient for painted surfaces but two part epoxies are preferred for porous or rough coatings Dolly Application 1 Mix the glue per manufacturer s instructions and apply a uniform film of glue on the base of the dolly 2 Attach the dolly to the prepared coating test area NOI If the coated surface to be tested is overhead or vertical a means to hold the dolly in place during the cure time may be required i e removable tape 3 Gently push down on the dolly to squeeze out excess adhesive Do not twist or slide the dolly back and forth on the coating as air bubbles may be generated 4 Carefully remove excess adhesive from around the edges of the dolly with included cotton swabs 5 Allow to cure per the adhesive manufacturer s instructions Test Area Separation The decision of when to cut around a dolly is dependent on the standard specification or contractual agreement to which the test is to comply The primary purpose for cutting through the coating is to isolate a specific diameter test area When the decision to cut into the coating has been made it is recommended to cut all the way through to the substrate As a minimum it is suggested to carefully cut away
12. lling See pg 3 Pull Off Test a PosiTest AT M manual see pg 5 b PosiTest AT A automatic see pg 7 Analysis of Test Results The dolly and the coating are examined and evaluated to determine the nature of the coating failure see pg 4 Dolly amp Coating Preparation Dolly Preparation 1 To remove oxidation and contaminants place the included abrasive pad on a flat surface and rub the base of the dolly across the pad 4 5 times 2 As required remove residue left from the abrading process using a dry cloth or paper towel Coating Preparation 1 Lightly roughen the coating using the included abrasive pad As coating abrasion may introduce flaws it should only be used when necessary to remove surface contaminants or when the bond strength between the glue and the coating is insufficient for pull testing 2 To promote the bond between the dolly and the coating degrease the area of the coating to be tested using alcohol or acetone to remove any oil moisture or dust Ensure that any alternative abrasion techniques degreasers or adhesives do not alter the properties of the coating Test by applying a small amount of degreaser or glue to a sample area and observing effects Glue amp Dolly Application Glue Selection The glue included in the PosiTest Adhesion Tester kit has been selected due to its versatility This glue has minimal impact on a variety of coatings and has a tensile strength exceeding t
13. ng on remaining battery power Alternatively the AC power supply can be used to power the instrument The icon will display while the instrument is charging When fully charged the S icon will appear NOTE The PosiTest AT A internal NiMH battery pack is user replaceable In the unlikely event power issues are experienced please contact our technical support or your local dealer for OEM battery pricing availability and detailed replacement instructions 15 Calibration and Verification Calibration The PosiTest AT is shipped with a Certificate of Calibration showing traceability to a national standard For organizations with re certification requirements the PosiTest AT may be returned at regular intervals for calibration DeFelsko recommends that our customers establish their instrument calibration intervals based upon their own experience and work environment Based on our product knowledge data and customer feedback a one year calibration interval from either the date of calibration date of purchase or date of receipt is a typical starting point Verification The PosiTest AT Verifier is available for verifying the accuracy and operation of PosiTest Adhesion Testers and is an important component in fulfilling both ISO and in house quality control requirements Fully portable with hardshell carry case for use in the field or laboratory Learn more at www defelsko com at verifier Technical Data Conforms to ASTM D4541 AS
14. re packages For security purposes the registration key is required to add the Gage to your PosiSoft net account pg 14 Restores factory settings and returns the instrument to a known condition The following occurs All batches stored readings notes batch names and screen captures are erased Menu settings are returned to the following Memory OFF Bluetooth ON Units psi Pull Parameters default WiFi OFF Backlight Sun Orientation Landscape USB Drive ON Language English NMU Date Time and WiFi are not affected by a Reset 12 PosiTest AT A Connect Menu PosiSoft net Select Sync Now to immediately synchronize stored measurement data via USB or WiFi to PosiSoft net pg 14 PosiSoft Desktop Manager and an internet connection are required when using USB The instrument automatically attempts synchronization with PosiSoft net when initially connected via USB to a PC running PosiSoft Desktop Manager Additional measurements added to memory while connected are synchronized only when the USB cable is disconnected then reconnected or when the Sync Now option is selected The instrument uses a USB mass storage device which provides a simple interface to retrieve data in a manner similar to USB flash drives cameras or digital audio players Allows communication with a smart device running the PosiTector App pg 14 via J Bluetooth wireless technology No pairing required When connected measurem
15. s EEE 00 39 34 1000 Hold 5 0 5 0 s Pull Status No Pull Edit 0 20 150 1000 mm _Psi s iE Batch Note B3 4 Layer 4 ___B3 4Note B3 Note used knife to cul away exces e Cohesive Adhesive i Glue Y 0 YiZ nterface 0 Layer B 0 Bi Interface 0 Substrate A 0 AB Interface 0 Edit Reading Note Recording Fracture Analysis The cohesive and adhesive fracture visual analysis results can be recorded available for up to 5 coating layers Dolly Face Coated Surfac eevee Bi 4 Layer 2 Cohesive Adhesive Glue Y 0 YiZ Interface 0 Layer2 C 50 CN Interface 0 a Layer1 B 50 BiC Interface 0 Layer 2 50 Cohesive C Substrate A 0 AMB Interface 0 EA Layer 1 50 Cohesive B Edit Fracture analysis is beyond the scope of this quick guide Refer to the full instruction guide for a detailed overview of fracture analysis and recording 10 PosiTest AT A Memory Menu The PosiTest AT A stores 100 000 readings in up to 1 000 batches Stored measurements can be reviewed on screen or accessed via computers tablets and smart phones New Batch Closes any currently opened batch and creates a new memory batch named using the lowest available number example B2 New batches are date stamped when they are created Open Selects a previously created batch to open and make current Close Stops the recording process closes the current batch and removes batch information from
16. s down after 5 minutes of no activity Alternatively press and hold the 0 button for 5 seconds or select Power Off from the menu Instrument functions are menu controlled To access the Menu press the button Navigate using the multifunction keypad or touch screen display Multifunction Keypad Directional buttons are used to navigate through O menu options and adjust parameters Note Some menus display on more than a single view Use the rg buttons or swipe the touch display to switch between views Access Menu Select Power On Start Test Return to Main View Screen Capture Press both lt gt buttons at any time to copy and save an image copy of the the current display The last 10 screen captures are stored in memory and can be accessed when connected to a computer see PosiSoft USB Drive pg 14 Stop Test Power down hold for 5 seconds 7 PosiTest AT A Touch Screen Display Use the touch screen to interact with menu options Swipe horizontally to navigate between views or vertically to move between batch readings Alternatively the directional buttons can be used for navigation Main View shown with memory batch open Carousel indicates the current view Swipe horizontally or use arrow keys to switch between views see pg 10 Pull Chart displays pressure over time Current Reading 150 psi s Hold Time WiFi Bluetooth USB Pull Parameters pg 11 Status icons
17. the display Delete Removes a batch and associated measurements from memory MOH For further details on memory options refer to the full instruction manual at www defelsko com manuals Setup Menu Pull Parameters Select desired parameter using the O Y buttons or touch screen Use the lt and gt buttons to adjust Dolly Size Select the dolly size being utilized for the test 10 14 20 or 50 mm Rate User selectable pull rate unit sec Specified rate is maintained for the duration of the test Limit Pressure will build up until the set Limit is reached or the dolly is pulled from the surface whichever occurs first By default the instrument will pull to maximum for selected dolly size see Technical Specifications pg 16 11 PosiTest AT A Hold Time o up to 60 seconds Hold Time is pressure is displayed on the pull chart maintained held at defined Limit Default 0 seconds 0 10 shaded area 20 30 20 1 0 20 00 Defined mm MPa s MPa S Hold Time Rotates display between landscape default or portrait views Ideal for use in horizontal or vertical positions Units Converts the display from psi MPa N mm or Newtons unit of force Existing measurements in memory are not converted Switching units closes Memory Gage Info Displays the model number amp serial number PosiSoft net registration key the amount of remaining memory for storage of readings date and time and softwa
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