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Echo Signal Processing

QuintSonic 7

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8.5 Postprocessing

8.5.1

General remarks

While the preprocessor is designed to extract the echoes from the echo signal curve by means of

the set clipping parameters and to optimise their position and size (least squares optimisation), the

postprocessor focuses on the selection of echoes. It aims to select from the extracted echoes only

those to be used for layer thickness calculation. In other words, unwanted echoes produced by

interference or noise will be identified and suppressed accordingly. For this purpose, a comparison

with the results from a cross section is of great help as the echoes at layer interfaces can thus be

quickly identified. Only the remaining echoes will be considered as being unwanted echoes and

can be suppressed accordingly by using appropriate methods.

QuintSonic 7 offers a number of postprocessing options that partially complement each other or

can be used alternatively. The postprocessor runs a set of possible selection mechanisms in a

fixed sequence. If certain processing methods are not activated, they will be jumped. Each

processing level identifies the echoes that have been suppressed and thus eliminated in this level

accordingly. This makes sure that at the end of the postprocessing procedure it will be clearly

shown by which selection criterion a certain echo has been suppressed and eliminated. On the A-

scan image, the peak of suppressed or invalid echoes is marked by an icon (see also section

7.4.7). So you can quickly identify why a certain echo has become invalid. This will help you to find

out whether a selection has been incorrect and remedy accordingly.

The following sections describe the selections methods available. They are listed according to their

running sequence.

8.5.2

Multiple-echo suppression

Some types of material (such as metals for instance) may produce strong echoes on both sides of

the layer interfaces. This is due to strong variations of the acoustic properties at the layer

interfaces and due to the weak attenuation of ultrasound in the material itself. Sound waves

travelling between two layer interfaces produce multiple reflections. As the sound, however, will

never be reflected completely, a part of the energy from each of the reflections will be sent back to

the sensor head. As a result, multiple echoes will disturb the evaluation and thus lead to erratic

Содержание QuintSonic 7

Страница 1: ...ElektroPhysik Technical Manual and Operating Instructions Ultrasonic Coating Thickness Measuring System QuintSonic 7 ...

Страница 2: ...ysik Dr Steingroever GmbH Co KG Pasteurstr 15 50735 Köln Deutschland Tel 49 221 752040 Fax 49 221 7520467 Internet http www elektrophysik com Mail info elektrophysik com ElektroPhysik Version 0 92 13 08 2013 Rh bo r Subject to change without notice ...

Страница 3: ... 3 2 2 Measuring ranges 21 4 User Interface 22 4 1 Important Menu Screens 22 4 1 1 Start screen 22 4 1 2 Measure mode numerical and graphical screen 23 4 1 3 Measure mode Large numerical screen 24 4 1 4 Measure Mode A screen Image with Echo Signal 25 4 1 5 Statistics screen 26 4 1 6 Main menu 27 4 2 How to navigate in the main menu 28 4 3 Parameter setting 29 4 3 1 Setting a switch parameter Examp...

Страница 4: ...ction 47 7 2 Description of A scan Image Types 48 7 2 1 Reference signal 48 7 2 2 Raw measuring signal 49 7 2 3 Echo signal with echo lines 50 7 3 Application 52 7 3 1 Reference signal 52 7 3 2 Raw measuring signal 52 7 3 3 Echo signal with echo lines 52 7 4 How to use the A scan screen 59 7 4 1 Zoom in and zoom out in amplitude direction 61 7 4 2 Zoom in and zoom out in time direction 61 7 4 3 Gr...

Страница 5: ...ses 83 9 7 Multiple reflections 83 9 8 Measuring object of unidentified nature 83 9 9 Interaction of preprocessor optimisation and postprocessor parameters 84 10 Application examples 86 10 1 Three layer paint on plastic 86 10 2 One layer paint on wood 86 10 3 Two layer paint on steel 87 10 4 Thin one layer paint on body sheet 88 10 5 Wall thickness measurement 89 10 6 Multi layer plastics foil 89 ...

Страница 6: ... Readings 140 13 2 3 Histogram 141 13 2 4 Trend diagram 142 13 2 5 Help Extras 143 13 3 Delete a reading from a batch 143 13 3 1 Delete single readings 143 13 3 2 Delete all readings 144 13 3 3 Delete a current value 144 14 Data Output Data Transfer 145 14 1 Data print out 145 14 2 Transfer data to a PC terminal program 146 14 3 Data transfer to a PC QSoft 7 148 15 The Menu 149 15 1 Main menu 149 ...

Страница 7: ...ture compensation reference point 162 17 Connectable accessories 164 17 1 General remarks 164 17 2 Direct connection 164 17 3 Connection via the multi purpose connection box 166 18 Care and Maintenance 167 18 1 Care 167 18 1 1 Using NiMH storage batteries 167 18 2 Maintenance 167 19 Technical Data 168 19 1 Gauge specifications 168 19 2 1 Gauge specifications 168 19 3 Sensor 169 20 Supply Schedule ...

Страница 8: ...d for measuring thin bases through the coating especially the wall thickness of thin metal sheets starting from 50 µm 1 3 Measuring Procedure The working principle of QuintSonic 7 is based on the reflection of ultrasonic waves at the interfaces between the individual layers of a coating system For measurement a liquid or pasty couplant is applied on the sample at the point of measurement The senso...

Страница 9: ... feature of QuintSonic 7 A scan images see section 7 are shown directly on the gauge display for immediate quality assessment of the readings obtained without the need to connect a computer On the other hand additional PC software is available see below to provide large sized coloured A scan images on your computer This makes QuintSonic 7 the ideal tool for both portable use on site or use in the ...

Страница 10: ... a multi purpose adapter unit can be supplied to provide an extra USB interface for connecting a mains unit headphones a footswitch and or an alarm device If only single functions are requested an RS232 adapter cable as well as an IR USB converter unit for connecting a PC can be supplied ...

Страница 11: ...the carrying case Push the battery compartment lid in direction of the arrow as shown below Insert the batteries supplied with the gauge into the battery compartment Respect polarities as shown below Push the battery lid over the housing and close housing Open the battery compartment Insert batteries Take the sensor form the carrying case and connect it to the sensor socket on top of the base unit...

Страница 12: ...unctions keys are located below the display Their current function is shown above the respective key at the bottom of display The ON OFF button is located on the left side of gauge Prior to the initial operation of the gauge please proceed according the instructions below The menu will guide you through the procedure sensor socket multi purpose socket Function keys ON OFF button Command and naviga...

Страница 13: ...et language Use arrow arrow up down keys to go to the requested language option Press OK key or OK function key to confirm Now Total Reset appears on display A Total Reset restores the factory settings For the initial operation there is no need to carry out this function Therefore press the NO function key To complete the initialisation procedure the type of power supply is displayed Do not change...

Страница 14: ...ly to measuring mode The gauge is ready for measurement and the measuring screen appears At this point no reading is available The Direct mode see section 6 3 1 along with the parameter set Demo are preset The current setting is always shown in the status line In this setting you can take readings at a medium accuracy It is not necessary to make further settings prior to measurement Take the test ...

Страница 15: ...nt has been completed use a clean cloth to clean the foil and the sensor measuring surface Briefly press ON OFF button to switch off the gauge The figure above shows all data displayed on the measuring screen For more details please refer to the following sections of this manual Schematic representation of the layer system here one layer only Active parameter set in this figure Demo Active batch h...

Страница 16: ...in switched on state the Special Functions menu will be called s section 16 2 The Function keys may assume different functions according to the screen content Their current properties are shown on display upper to the function keys The command and navigation key block may also assume different functions Press OK to confirm settings store values or select items from the menu Function keys ON OFF bu...

Страница 17: ...e sensor socket connects to all SIDSP coating thickness sensors of the MiniTest 7 series also to sensors such as the F N or FN type magnetic induction and or eddy currents principle i e you only need one display unit and can operate several sensors The multi purpose socket is used for connecting the plug in mains unit or other optional accessories such as the foot switch the alarm device RS232 int...

Страница 18: ...20 40 100 If the lowest stage has been reached Battery almost empty will be indicated In case of total discharge Battery too low will be indicated and the gauge will switch off Make sure to replace empty batteries within a period of about one minute after you have removed the exhausted ones If the gauge remains longer without power date and time settings will get lost If the time interval for batt...

Страница 19: ...ckness measurement Compared to the conventional procedures the new technology offers considerable advantages that will be explained in detail in the following section SIDSP stands for sensor integrated digital signal processing With this technique all necessary measuring signals are generated and processed inside the sensor itself The sensor of the QuintSonic sensor emits the ultrasonic signal at ...

Страница 20: ...m stability enabling the user to take full advantage of the precision and reliability of the system During the manufacture of a sensor sensor calibration values are determined Such values are vital for the precision of a sensor They are stored in the sensor itself to make them available at any time They will be retained even if the sensor is connected to another QuintSonic 7 gauge in other words y...

Страница 21: ...rinciple is based on a time interval measurement the measuring ranges are scaled in units of time The obtainable coating thickness ranges are a function of the ultrasonic velocities of the materials to be measured Please refer to the technical data of section 19 for the different coating thickness ranges resulting from an ultrasonic velocity of 2375 m s average values for industrial coatings The r...

Страница 22: ...u will learn how to enter your settings for the different parameter types 4 1 Important Menu Screens 4 1 1 Start screen At switch on the start screen appears showing company logo gauge and type of sensor being connected The start screen is shown for about 3 seconds during which the initialising procedure is running Once completed the system switches to measuring mode You will be requested whether ...

Страница 23: ...the left side of screen with the height of the individual layers being determined by their layer thickness The coupling index on the left indicates the quality of coupling see section 6 5 2 achieved during measurement On the upper right the number of readings stored in the current batch is shown along with the name of active batch and the name of parameter set relating to this batch bottom line Ma...

Страница 24: ...creen offers sufficient space to represent large numerical values to enable good readability from the distance To call this screen the Graphics parameter must be disabled Go to the Configuration submenu and press the Configuration function key see section 15 5 3 Configuration Mains or battery operation with state of charge Time Layer thickness 1 Layer thickness 2 Active parameter set Antenna icon ...

Страница 25: ...used for moving along the signal curve This enables you to read the amplitude value at any point of the curve numerical value on the upper right of screen The broken lines represent the clipping lines For their signification and use please refer to section 8 The A scan image also includes a zoom function to zoom in or out sections as requested see also section 7 4 Current property of function keys...

Страница 26: ... A screen its significance and how to use it please refer to sections 7 and 8 4 1 5 Statistics screen All statistical values of a batch will be reported in tabular form The figure above represents Layer 1 Statistics are available for each individual layer as well as for the total thickness For more details on the statistical functions please refer to section 13 Current properties of function keys ...

Страница 27: ...ny submenu you can return to the main menu by pressing the ESC key repeatedly If you press ESC in the main menu you will go back to the measure screen The typical items of a menu are shown on the figure above Press the Help key on the left to call up the help menu relating to the currently active menu A context oriented help is available for many of the different screens For more detailed informat...

Страница 28: ...unction key In such case please press ESC repeatedly until you access a screen featuring such key From the main menu press arrow up or down key to select the requested item for instance Setup Press OK to confirm The selected item will be called up The Setup menu includes a submenu Use arrow keys to select User Preferences and confirm by OK to call up your selection The User Preferences menu does n...

Страница 29: ... only mark your parameter option without making any changes to it How to reach the editing mode for changing a parameter will be explained in the relevant sections relating to the different parameter types Some of the parameters cannot be changed such as active batch batch properties You will quickly identify such parameters if no selection cursor is available 4 3 1 Setting a switch parameter Exam...

Страница 30: ...e parameters require a numerical setting Once you select such parameter a special entry screen will appear Example pos clip limit from the batch configuration menu See section 12 1 2 1 Clipping The ESC and OK keys assume navigation functions to the left right The arrow keys assume their standard navigation function up down The entry method is similar to writing a text message on a mobile phone Use...

Страница 31: ...the cursor over the alphanumerical entry field Once you reached the requested character wait until the auto save time delay has passed and the value will be accepted automatically The auto save time delay can be set via Setup User Preferences Entry accepted after sec See section 15 6 5 If you wish to enter the same character again just move the cursor to any other character and go back immediately...

Страница 32: ...ial characters also for vowel mutations Once you have entered a special characters this window will close automatically Once you have completed your text press Done to confirm You will be asked whether to save changes or not Press OK to confirm or ESC to abort If you abort the previous setting will remain valid ...

Страница 33: ...travel times as determined in the measuring object into coating thickness the sound velocities in the individual layers act as constants of proportionality These variables are properties of the measuring object not of the measuring system and depend on the material and temperature involved Most times these variables are not exactly known As a consequence their determination through indirect method...

Страница 34: ...you have defined in the table are still applicable for the material batch to be measured If not it is recommended to make a cross section of the new material batch and use the calibration standard resulting from this material cross section accordingly d Using the preset value for industrial coatings The sound velocities for most industrial coatings are in the range of 2375 m s 15 If this default v...

Страница 35: ...or each layer the gauge will calculate an average from the set of readings you have taken Make sure to use the same measuring spot as during measurement with the other method Of course after a cross section this will be possible to a very limited extend only The system now processes the deviations from the thickness values that have been entered previously and the sound velocities are calculated a...

Страница 36: ...nstructions on the steps required to prepare measurement on the use of the sensor on how to avoid interference and on the correct interpretation of measuring results Skills required for operating the gauge For using an ultrasonic measuring system a basic training in the field of ultrasonic measuring techniques is recommended to make available sufficient knowledge on the following topics Theory of ...

Страница 37: ...al limits If impedance values do not vary sufficiently a clear separation of the layers is not possible any more For more details please refer to sections 7 to 9 Sound velocities Ultrasonic coating thickness measurement is based on the measurement of travel times taking into account the sound velocities in the individual layers For the calculation of the layer thickness it is presumed on the assum...

Страница 38: ...thinner bases it is recommended to make a material cross sections Also strong sound attenuation may impair measurement It occurs in some kinds of plastic materials for instance In such materials sound attenuation becomes stronger with increasing wall thickness When reaching a certain material thickness depending on the type of material the sound attenuation is so strong that the amplitude of the r...

Страница 39: ...n batches First create a batch and store in under a name in the database The name you have assigned to your batch is shown on the measuring screen New readings will be added and stored to the currently active batch If you switch the gauge off the name of the last batch you have used will be memorized so that you can continue in this batch even after a switch off 6 3 1 Using the Direct Mode For qui...

Страница 40: ...he sound velocity is a constant of proportionality twice the coating thickness can be measured within the same measuring range if the sound velocity is double Compared to plastic materials the sound velocities in metal coatings are much higher approx 6000 m s As a result in metal coatings higher coating thickness ranges can be covered The total coating thickness of paint coating systems rarely exc...

Страница 41: ...ecome invalid due to one or several of the following incidents You have switched the measuring range The current temperature varies too much from the temperature during the acquisition of the reference signal Generally the acquisition of a reference signal is only required if such message appears In order to ensure optimum precision of the system or if very difficult measuring tasks are involved e...

Страница 42: ...ion 2 via the Measure Mode screen Press Configuration function key The Configuration menu will be active Proceed according the steps as descried under option 1 6 4 2 Selecting a couplant In ultrasonic coating thickness measurement couplants are needed to provide optimum transfer of ultrasonic wave energy between sensor and measuring object Main target is to ensure both a maximum input of energy as...

Страница 43: ...ved by ElektroPhysik If other couplants are used user is responsible for measuring errors or damage to the sensor Please note that any warranty claim will expire if the sensor is damaged by use of couplants other than those approved by ElektroPhysik 6 4 3 Checking carrying out calibration Prior to measurement it is recommended to check calibration If necessary proceed on recalibration see also sec...

Страница 44: ...ase the measuring procedure the following recommendations should be observed Connect the sensor prior to switching the gauge on Do not pull the sensor cable For disconnecting the cable from the gauge or sensor grasp the corrugated sleeve of connector and pull to disconnect The measuring surface of the sensor is made of a special plastic material ensuring an optimum ultrasonic energy transfer Keep ...

Страница 45: ...tact has deteriorated and action to improve the coupling contact must be taken accordingly The maximum coupling index depends on the nature of object to be measured For measurement grip the grey spring mounted sensor sleeve to hold the sensor between your thumb and forefingers see fig below Place the sensor vertically on the measuring object Push the spring mounted sleeve down to the stop Make sur...

Страница 46: ...Measure Mode ElektroPhysik QuintSonic 7 46 von 184 Ideal sensor position Example Readings taken on a 3 layer sample ...

Страница 47: ... Once the sensor is put onto the measuring object the measuring procedure will launch automatically and the results are shown on display Thus additional graphical representations do not seem to be necessary at a first glance However it should be considered that many factors may influence ultrasonic measurement impair the evaluation of readings or lead to calculation errors Sources of error may be ...

Страница 48: ...tages of the measuring and evaluation process Their information content and use is also different and will be described in the following section All A scan images are scaled in time units nanoseconds As the sound velocities vary according to the individual layers it is not possible and would make no sense to scale in thickness units 7 2 1 Reference signal Example of an A scan image with reference ...

Страница 49: ...gly depend on the properties of the object to be measured as well as on the coupling performance The above figure shows an example for a measuring signal As with the reference signal the signal profile should be smooth without jumps or sharp bends There are no further requirements for a proper A scan image The above A scan image does not allow to deduce any statements with respect to the position ...

Страница 50: ...zontal and vertical limiting lines as well as colour shaded or hatched zones representing the filtering or selection measures for noise suppression as set by the user The example above shows two horizontal broken lines indicating the global clipping limits See also section 8 3 3 1 Other filtering or selection measures have not been taken and therefore they are not shown in the above example Extrac...

Страница 51: ... as being invalid and what are the reasons for that What is the overall result of the processing procedure Did the current parameter settings make sure that only such echoes remain that do actually represent the layer interfaces This information directly relates to the various filtering and selection methods as described under section 8 The echo signal A scan image serves for checking the effects ...

Страница 52: ...ic component The positive pulse P will not reach the maximum set point approx 95 Either it is clearly smaller or it reaches the upper edge of image at a zoom factor set to 1 to finally to jump down overshoot The response characteristic is beyond the control range of the electronics This may occur if the sensor head is damaged or worn The overall signal form clearly diverges from the image as shown...

Страница 53: ...limits of Global Clipping will be undercut see section 8 3 3 1 the measuring system will provide no results and an error message coupling failure will appear In such case it is recommended to clean the surface of measuring object at the measuring spot carefully and or to apply a suitable couplant If on the other hand the coupling echo Y is too large almost reaching the level of the reference signa...

Страница 54: ...r sufficiently in order to be distinguished from each other As a consequence there will be no negative echo even if the coupling is good enough In such case it is recommended to use another couplant 7 3 3 2 Noise floor Example noise floor As the generated ultrasonic sound wave travels through the complete measuring object not only the acoustic properties at the layer interfaces needed for coating ...

Страница 55: ...eflections The parameter setting must ensure to maintain all layer interface reflections Any remaining components of the noise floor can be suppressed later on by means of the post processor see section 8 5 7 3 3 3 Layer interface echoes Example Layer interface echoes Once the clipping parameters have been set correctly apart from the coupling echoes only the layer interface echoes remain after th...

Страница 56: ...system is not feasible any more If input and output signal travel in different directions they will be represented on the diagram as directly adjacent echoes with different algebraic signs positive negative In such case a detection is possible However a suitable least square optimisation section 8 4 must be applied to make sure any incorrect echo position will be corrected accordingly This will wo...

Страница 57: ...perties and if through the coating process no additional transitional layer has been produced it often happens that a smaller number of echoes is generated As a result the generated echo amplitude is very small and will be obscured through the noise In such case the relevant layers cannot be separated from each other by means of the ultrasonic method They will be displayed as one single layer Thei...

Страница 58: ...dustrial paintings have shown that interruptions of a few minutes only can produce a layer interface as shown on the A scan image The reflection at such layer interface can reach the size of the true reflection at the layer interface Though on both sides of the layer interface the same material is present a reflection and thus an echo is produced This is because the material of the layer interface...

Страница 59: ...an Several proxies are available to facilitate interpretation of the visible image section A cursor is available to move along the signal curve and read individual amplitude values accordingly This is to facilitate the numerical parameter setting The following section will describe in detail how to use the above help tools Some preprocessor see section 8 3 as well as some post processor section 8 ...

Страница 60: ...and amplitude domains 100 The signal curve is very small and not clearly visible The settings as described below will allow you to optimise the image section accordingly Zoom in Time Zoom ut Time Zoom out Amplitude Amplitude value at cursor position Crosshair cursor Time value at cursor position Function keys to move the graphics cursor Amplitude zoom detail Time ns on the left edge of screen Time...

Страница 61: ...acement of the image in amplitude direction is not possible 7 4 2 Zoom in and zoom out in time direction Press OK key in order to zoom in the A scan image by the factor 2 in direction of the time axis The currently set time domain can be read from the time limits located on the left and right bottom edge of the image In the example the zoom in factor of 2 enables an optimum positioning of the echo...

Страница 62: ...omplete signal curve and read the corresponding amplitude values at any point of the curve In the example shown on the left the cursor has been placed exactly at the point of time of the first layer interface echo line The associated time and amplitude values are indicated as numerical values upper to the image section Move the cursor to the right edge of screen When reaching a certain position th...

Страница 63: ... visible zoom factor 1 the light bar will be fully covered by the dark bar 7 4 5 A scan image menu The A scan image offers its own menu with some additional functions How to call and operate this menu will be described below 7 4 5 1 Calling the menu Point of start The A scan image is displayed Press function key Help Extras to call the menu as shown on example on the left Select the top item of me...

Страница 64: ... of parameter values such as time and amplitude limits as the numerical values of echoes give you some orientation To quit this screen press OK and the A scan image will appear 7 4 5 3 Zoom 100 With this function you can set the A scan image section to full size total measuring range amplitude 100 and the A scan reappears 7 4 5 4 Auto Zoom The Auto zoom function automatically adjusts the image sec...

Страница 65: ...or statistics as such measurements are for trial purposes only in order to find the optimum settings That the readings will not be stored can also be recognized by the fact that no thickness readings will be shown when changing to the measure mode screen section 7 4 8 7 4 7 Icons to identify invalid echoes Of echoes have been sorted out by the post processor section 8 5 they will be marked with an...

Страница 66: ...QuintSonic 7 66 von 184 7 4 8 Quit the A scan image After you have reached the total image section you can quit the A scan image by pressing ESC again The query as shown on the left appears Press ESC to quit the A scan image or ESC to stay with the image ...

Страница 67: ...h cases an appropriate assessment of the A scan image of the echo signal will be vital for reliable measurement For a new setting of task you should generally start with a basic setting suitable for your application The gauge provides a series of basic settings for typical applications in the form of pre defined parameter sets section 11 Data Management Choose a suitable pre defined parameter set ...

Страница 68: ...edure Signal processing algorithm sequence Preprocessor sequence preprocessing Optimisation sequence Postprocessor sequence postprocessing Calculation of layer thickness The measuring procedure signal processing algorithm and the calculation of thickness sequence cannot be influenced by the user For that reason no further details will be given on this subject The preprocessing optimisation and pos...

Страница 69: ...ng range Currently the time clipping is defined by the size of measuring range and cannot be changed 8 3 3 Amplitude clipping By means of the amplitude clipping portions of the echo signal curve containing unwanted echoes can be extracted from the echo extraction QuintSonic 7 offers three different clipping methods adapted to different settings of task According to the clipping method one or two a...

Страница 70: ...iently good for a wide range of applications In the standard mode of global clipping the criterion for the extraction of an echo is that the echo signal travels beyond the blocked domain exceeding its extremes maximum for positive echoes minimum for negative echoes to finally travel back to the blocked domain This requirement is met in most applications see fig above If echoes of the same algebrai...

Страница 71: ... of the blocked domain depend on the direction of evaluation you have set For positive limits the peak of echo must be located upper to the limit and the blocked domain is below this limit and vice versa as far as negative limits are concerned Under normal condition positive echoes are located above the zero line and negative ones below The so called base line of echo signal i e the behaviour of e...

Страница 72: ...exactly one echo is available at every end of domain once the clipping procedure has been completed Advantage of this method For each layer echo to be expected an optimally matching amplitude limit can be adjusted according to its height and direction without the need to take into account the size of adjacent echoes In addition the automatic time triggering ensures each echo will always be extract...

Страница 73: ...e minimised This condition will be checked by means of the so called method of least squares The result of this adjustment procedure optimisation becomes obvious on the A scan image One can see that the echo lines are no more located exactly under the pulse maxima Instead their position is slightly off centred Also the size of echo does not exactly correspond to the pulse heights any more This doe...

Страница 74: ... they will be jumped Each processing level identifies the echoes that have been suppressed and thus eliminated in this level accordingly This makes sure that at the end of the postprocessing procedure it will be clearly shown by which selection criterion a certain echo has been suppressed and eliminated On the A scan image the peak of suppressed or invalid echoes is marked by an icon see also sect...

Страница 75: ...cho suppression will search for echo sequences in the echo curve that meet the above described criteria All matching echoes will be suppressed accordingly except the first echo of each sequence The first echoes represents the original echo With certain layer base combinations adjacent layers also several in a row may happen to exhibit identical travel times and continuously decreasing amplitudes A...

Страница 76: ... produce gaps between two blocked domains A maximum of 8 adjacent blocked domains can be defined Each of the domains can be enabled or disabled individually Each domain starts from the second coupling echo starting point and is characterised by an amplitude limit A domain ranges from the starting point up to the starting point of the next active domain Disabled domains will be jumped If there is n...

Страница 77: ...eceding valid echo Thus it can be ensured that only the current layer will be considered irrespective of the thickness of the preceding layers and their respective echoes positions Any echo located between the expectancy domains will be classified as being unwanted and suppressed accordingly Only echoes located in the expectancy domains will remain If several echoes are detected in an expectancy d...

Страница 78: ...everal echoes can be found in one expectancy domain as you cannot be sure that the largest echo actually represents the right one In the ideal case the expectancy domains should be set in a way to make sure exactly the echo to be detected will actually be found in the respective domain Any adjacent unwanted echoes should be located beyond this domain Expectancy domains should not be mixed up with ...

Страница 79: ...hoes From the right to the left i e starting from the last echo the system will evaluate at maximum as many echoes as you have set layers 2 layers in the above example If the number of echoes detected is less than the number of layers you have set the system will identify less layers accordingly This setting is of advantage for the evaluations of wall thickness irrespective of the number of layers...

Страница 80: ...you cannot use two or more methods at the same time This applies for instance for the settings described under 8 5 6 2 to 8 5 6 4 Overlapping or contradictory effects will therefore not occur On the other hand some of the selection methods that can be usefully combined so as to complement their effects As an example combining First echoes section 8 5 6 2 with number of layers 2 section 8 5 6 1 wil...

Страница 81: ...h later optical evaluation of the sample It is highly recommended to use this service If the sound velocities in the materials concerned are not known such cross section evaluation will be required anyway for obtaining reliable and precise measuring results 9 2 Measuring range It is recommended always to choose the smallest possible measuring range for your setting of task Make sure always to work...

Страница 82: ...as you are not familiar enough with the system it is not recommended to change several parameters at the same time The effects of such parameter reset would be difficult to assess and probably lead to unnecessary time consuming procedures but to no avail However once you are familiar with the system a short glance on the A scan image will be sufficient to assess how make the correct parameter choi...

Страница 83: ...dividual echo extremes As a consequence the conditions for identifying multiple echoes constant distance are not given any more and suppression will partially fail In such cases other selection methods such as the limitation of the number of layer must be applied 9 8 Measuring object of unidentified nature If no precise knowledge on the nature and composition of a measuring object is available it ...

Страница 84: ...from the true receive signal This process is verified by using the least squares method The optimisation will succeed more effectively to the extent that the input signal of the optimisation stage is complete If bigger portions of the input signal are missing e g through a preceding clipping with amplitudes limits adjusted very high the optimisation processor might try to close this gap by displac...

Страница 85: ...and tricks ElektroPhysik QuintSonic 7 85 von 184 filtered out This situation occurs more frequently than expected especially if several postprocessing selection criteria have been activated at the same time ...

Страница 86: ...tly It will not be necessary to use the postprocessor function The thickness of the third layer is very thin and slightly ranges below the resolution limits of the system Given their respective echoes 2 and 3 showing different algebraic signs echo extraction will be no problem 10 2 One layer paint on wood Measuring range 1 300 ns Also for this measuring task you can work with the preset parameter ...

Страница 87: ...cularly high This indicates the coupling performance is not optimal However you have to accept as the situation cannot be changed Finally a clear deviation of the base line from the zero line can be observed behind the interface echo 1 This is due to the increased noise floor caused by the strong granularity of the wood In the above example the clipping limit as set is high enough for noise floor ...

Страница 88: ...e negative ones layer echo 1 as well the second coupling echo Z As a result both layer echoes will partially superimpose causing the signal between the echoes not going back to zero It will not even reach the blocked domain as defined by the global clipping For that reason processing by means of the basic setting will not be possible as the echo Z cannot be extracted However a special setting of t...

Страница 89: ...cted accordingly In order to display the wall thickness only the postprocessor has been set to process the last echoes from the rear to the front only The number of layers has been set to 1 As a consequence the extracted echoes from the paint layers will be marked to be invalid see fig and thus not taken into account for the calculation of layer thickness The sound velocity of layer 1 that remains...

Страница 90: ...eason it was switched to domain clipping The first clipping domain has been defined in a way to suppress the afore mentioned artefacts see fig on the right The second clipping domain is operated in the global clipping mode with the amplitude limit set to 0 and ranging until the end of measuring range Five layer interface echoes have been extracted hence five layer thickness values have been provid...

Страница 91: ...quick and rough readings and if there is no need for data storage or data evaluation 11 1 2 Memory capacity using the data memory The memory of QuintSonic 7 disposes of a data memory for at total of 300 batches and parameter sets e g 200 batches and 100 parameter sets to store a maximum of 250 000 readings Subdirectories with up to 5 levels are available to store and manage batches and parameter s...

Страница 92: ...l information Press function key Main menu to call the main menu followed by data base Press OK to confirm All actions described hereunder will start from this point 11 2 2 Directories 11 2 2 1 How to create a directory Use arrow keys up down to move the cursor from its current position greyed out to the place on the tree where you wish to create a new directory A new directory can be created at a...

Страница 93: ...ur entry or ESC to abort Once you have confirmed your entry the directory has been created and will be shown on the directory tree 11 2 2 2 How to delete a directory or a directory entry Use arrow up down keys to select the directory or the directory entry batch parameter set you wish to delete Your selection will be greyed out Press function key Actions and select Delete Press OK to confirm ...

Страница 94: ...e Note You can only delete empty directories Any subdirectories and or batches and parameter sets must be deleted previously This is a safety measure in order to prevent accidental deletion of data The Direct mode batch cannot be deleted A parameter set associated to one or several batches cannot be deleted Caution Data will be deleted irretrievably and cannot be restored any more For that reason ...

Страница 95: ...low the pop up window The move procedure will be executed Note The target position must be an intermediate position i e it must be located between two entries or a the end of the tree Such intermediate position will be marked by an arrow on the left edge of screen It may occur that during the move procedure a message will appear Memory optimisation in progress Please wait This is for internal reas...

Страница 96: ...ch parameter set you wish to rename Your selection will be greyed out Press function key Actions Select Rename from the list and press OK to confirm The current name appears in the alphanumerical entry field You can change it now see section 4 3 4 Alphanumerical entries The user name will persist The name has been changed and the new directory name appears on the directory tree ...

Страница 97: ...creen a small arrow appears at the intermediate position You can create a batch at any intermediate position of the directory tree In the example on the left this is the upper tree level Press function key Actions Select the menu item New batch from the list Press OK to confirm A alphanumerical entry field appears Enter a batch name see section 4 3 4 Alphanumerical entries A confirmation prompt wi...

Страница 98: ...sk you whether to save the new user name Press OK to confirm or ESC to abort To complete the procedure a confirmation prompt will ask you whether to accept the settings from the currently active batch Press OK to confirm or ESC to copy other presettings or make new settings The copy function facilitates the creation of a series of new batches or to copy settings from the Direct mode The batch has ...

Страница 99: ... select Database Press OK to confirm The currently active batch and its matching parameter set are shown on the status line Use arrow up down keys to choose the requested batch and press OK to confirm your selection Your selection has become active now The batch properties of are shown on a list If you do not wish to make any changes to the batch parameter settings you can directly proceed on meas...

Страница 100: ...via the main menu Press function key main menu and select Active Batch from the list Press OK to confirm The submenu Active Batch will appear Choose Configuration and press OK to confrm The Configuration submenu will appear Choose Parameter set and press OK to confirm Choose a parameter set from the list and press OK to confirm ...

Страница 101: ...cording to option 1 Note This function mainly serves to assign a parameter to a new batch other than the Default parameter set Make sure the new batch does NOT contain any readings The parameter set of a batch containing readings should never be changed Any changes to its original parameter set would change the conditions for measurement As a result the batch would contain a mixture of readings ta...

Страница 102: ... main menu and select Active Batch from the list Press OK to confirm The submenue Active Batch will become active Choose Configuration and press OK to confirm and to call the submenu Configuration Move the cursor to Parameter set option and press function key Edit The submenu Parameter set appears Proceed according to section 12 Setting Parameter Sets ...

Страница 103: ...containing readings should not be changed Any changes to the original parameter set would change the conditions for measurement As a result the batch would contain a mixture of readings taken with the originally set parameters as well as readings taken with the new parameter set Hence consistency of the batch would not be given any more If during measurement changes to the parameter set should bec...

Страница 104: ...OK to confirm Use arrow up down keys to select an intermediate position on the directory tree where you wish to insert a new batch An intermediate position is marked by a small arrow on the left screen edge You can create a parameter set at any position on the directory tree On the example shown on the left a previously created subdirectory Parameter has been used Press function key Actions to cal...

Страница 105: ...confirm the parameter set will be created and appear on the directory tree At this point the new parameter sets is defined by the presettings 11 2 4 2 Delete a parameter set See section 11 2 2 2 How to delete a directory or a directory entry Note A parameter set associated to one or several batches cannot be deleted 11 2 4 3 Move a parameter set See section 11 2 2 3 How to move a directory or a di...

Страница 106: ...dvantage of this function You can always start from the same conditions even if the parameter set has been changed Hence you can fully focus on the effects of the parameter changes There is no need to take new readings and follow up the echo signal changes This adds additional comfort to the parameter setting Option 1 via the main menu Press function key Main menu and select Active Batch from the ...

Страница 107: ...ppears Move the cursor to Parameter set and press function key Edit The submenu Parameter set appears and the parameter set associated to the active batch becomes active The parameters stored in a set are subdivided into several submenus The respective menu items are described under 12 1 1 to 12 1 3 Choose the requested submenu and confirm your selection by pressing OK Note One parameter set may b...

Страница 108: ... 5 The Auto zoom parameter defines whether the obtained echoes will always be zoomed to full size on the A scan image after a new reading has been taken This is of advantage for highest precision of the graphical representation If however the focus is put on a comparative analysis e g in order to assess the reproducibility of echoes in sub sequent measurements on the same measuring spot it is reco...

Страница 109: ...to section 8 3 3 1 Domain Clipping If you set to domain clipping apart from the global clipping limits the parameters for the various domains 8 maximum will be added Each domain can be enabled disabled individually For each domain you can set the starting time from as well as the amplitude clipping value Height If the amplitude clipping value has been set to 0 the global clipping will be applied f...

Страница 110: ...ain The default processing direction can be inverted by using the invert function For a description and the use of the variable clipping function please refer to section 8 3 3 3 As the parameters of the 8 clipping domains do not fit into one single screen a screen scroll bar is available on the right edge of screen Use the arrow up down keys to scroll through the complete table Note A domain can n...

Страница 111: ...ction With this parameter you can chose the method to select the requested echoes from the total number of echoes that have been extracted by the preprocessor for use and entry of selection parameters please refer to 4 3 2 The following options are available all echoes first echoes largest echoes and last echoes If this parameter is set to echo selection you can choose the echoes manually from the...

Страница 112: ...to the starting time of the next blocked domain being active If above a blocked domain no further active blocked domain has been found the blocked domain concerned will range up to the end of measuring range If the limit has been set to 0 the domain concerned will not have any blocking function However the starting time of such domain will define the starting time of the previous domain As the par...

Страница 113: ...are related to the detected position of the preceding echo This is necessary as the limits should represent the upper and lower thickness limits of the respective layer irrespective of the properties of the other remaining layers As the parameters of the 8 expectancy domains will not fit into one single screen a screen scroll bar is available on the right edge of screen Use the arrow up down keys ...

Страница 114: ...icance whether Material or Sound velocity are marked Press OK to confirm and call the entry method Entry options Direct numerical entry Literature values selection from a sound velocity table User values Determine Calibration via target layer thickness and thickness measurement Make your selection and press OK to confirm and call the respective submenu 12 1 4 4 1 Direct entry Select Direct to call...

Страница 115: ...4 The entry of a material name is optional If you do not wish to enter such name just press Done You will be asked whether to save changes or not Press OK to save the material name you have entered or ESC to abort After completion of the input procedure the sound velocity you have entered will be saved together with the material name if any for the layer you have selected Finally you will be asked...

Страница 116: ... to confirm As the complete table will not fit into one single screen just use the cursor to scroll through the table Once you arrive at the end of table just keep on pressing the arrow key and you will jump back to the start The sound velocity associated to the material will be stored for the selected layer 12 1 4 4 3 User values User values A table appears with customer set materials and their r...

Страница 117: ...dure a suitable parameter set must be created or loaded in order to obtain reproducible and reliable readings on the calibration standard Make sure to obtain the correct number of layers Once the measurement cycle is completed for each layer a new sound velocity will be calculated from the average of readings the set point and the sound velocity used The new sound velocity obtained from this calcu...

Страница 118: ...will increase with the number of readings Double check the state of couplant from time to time see section 6 5 2 Once all readings taken press Done to complete and save To abort and cancel readings press New and take a new set of readings The sound velocities will be saved for the new parameter set 12 1 5 Edit the User values table 12 1 5 1 Add a new material Proceed according to section 12 1 4 4 ...

Страница 119: ...rs to ask you whether to save the value or abort Press OK to save or ESC to abort An alphanumerical entry field follows Enter a name for the new material for how to enter alphanumerical parameter values please refer to section 4 3 4 A confirmation prompt appears to ask you whether to save the name or abort Press OK to save or ESC to abort If you confirm the new material entry will be created and l...

Страница 120: ... values can be set on the graph by positioning the cursor lines within the A scan image This procedures enables a quick reference between A scan image information and parameter values without the need to read numerical values from the A scan image or enter the same into the system If a parameter set has been changed QuintSonic 7 offers the possibility to repeat the processing of previous readings ...

Страница 121: ...ions Clipping method Clipping limits Expectancy domains Blocked domains Select the requested item from the menu and press OK to confirm Please refer to the following section for more detailed information 12 2 2 Clipping 12 2 2 1 Clipping method Select requested clipping method and press OK to confirm and activate your selection 12 2 2 2 Clipping limits Any further editing procedure depends on the ...

Страница 122: ...s 4 in the example on the left are covered by a cursor line Therefore they seem to be solid lines Use arrow up down keys to adjust the upper clipping limit The upper solid cursor line will detach from the former upper clipping line and assume the position you adjust Once the setting complete press OK Use arrow up down keys to adjust the lower clipping limit The lower solid cursor line will detach ...

Страница 123: ...nd the A scan image refreshed accordingly The new clipping limits and their respective numerical values 2 8 are shown on the A scan image Note According to your clipping limit changes some of the formerly visible echo lines may disappear and new ones appear accordingly The echo signal however will remain unchanged ...

Страница 124: ...ced from an interference Press Help Extras to call the A scan image menu Select clipping limits followed by Create The A scan image appears displaying a high lighted doted area the so called blocked domain For the moment this blocked domain reaches in right direction from the cursor to the end of measuring range It moves according to cursor position Use the cursor to adjust the left time limit fun...

Страница 125: ...re the cursor is positioned within the clipping domain you have just created This time make sure to position the cursor behind the first echo pulse Set the amplitude limit for the next domain to 0 Make sure the current blocked domain disappears once you approach the cursor to the zero line This indicates the system switches to global clipping Press OK to confirm The process will be recalculated Th...

Страница 126: ... of image has been created for demonstration purposes only You may also drop it by extending the first clipping range a little to the right and the third one to the left making sure both clipping domains are contiguous This setting will even improve noise suppression How to make such setting will be shown in the following section Delete a clipping domain Starting point is the A scan image on the l...

Страница 127: ... cursor right to the limit to be displaced i e in the second clipping domain Press function key Help Extra to call the A scan image Choose clipping limits followed by Edit The A scan image appears and the cursor jumps to the limit to be edited Adjust the cursor to the new position of limit Press OK to confirm The limits have been displaced and the processes recalculated accordingly The clipping do...

Страница 128: ...ted from an interference Press Help Extras to call the A scan image menu Select clipping limits followed by Create The A scan image appears displaying a high lighted doted area the so called blocked domain For the moment this blocked domain reaches in right direction from the cursor to the end of measuring range It moves according to cursor position Use the cursor to adjust the starting times func...

Страница 129: ...in a way the second layer interface echo protrudes Press OK to confirm The second clipping domain has been created and the process has been recalculated Now the second layer interface echo will be extracted correctly You can clearly see the second clipping domain precisely starts at the above mentioned point of penetration of the first echo pulse If during a new measurement the first layer interfa...

Страница 130: ...wed by Delete Once you confirm Delete by pressing OK selected domain will be deleted and the A scan image refreshed accordingly Edit the clipping limits Point of start is the A scan image on the left Two clipping domains have been created by using the Delete function see above The clipping limit of the second clipping domain is to be changed Position the cursor in the domain to be edited Press fun...

Страница 131: ...on Blocked domains can be edited created or deleted Chose the requested function from the list and press OK to confirm Create a blocked domain Point of start is the A scan image on the left It has been created by measurement of a 2 layer sample with the global clipping function being enabled No additional clipping domains have been defined so far 3 layer interface echoes have been extracted with t...

Страница 132: ...l range downwards and vice versa Position the cursor behind the second layer interface echo pulse Adjust the amplitude limit in a way to make sure any false echoes will be completely located within the blocked domain It is recommended to keep an additional safety distance Whether you create a positive or a negative blocked domain is of no significance here Press OK to confirm The blocked domain ha...

Страница 133: ... to the left for demonstration purpose Press OK to confirm The blocked domain will be refreshed according to the changes you have made and the process recalculated accordingly However the result will not change as the changes to the blocked domains will suppress the false echoes with the same efficiency as in the previous case Delete a blocked domain Point of start is the A scan image on the left ...

Страница 134: ...o located between the expectancy domains will be marked as being invalid On the A scan image they will be marked by the expectancy domain icon You can create edit or delete expectancy domains Select the requested item from the menu and confirm your selection by pressing OK Create an expectancy domain Point of start is the A scan image on the left It has been created by measurement of a 2 layer sam...

Страница 135: ...eys left and right of the expectancy domain to be created Position the cursor in front of the first layer interface echo pulse in order to adjust the start time of the first expectancy domain Press OK to confirm After this the end point of the expectancy domain is to be adjusted The cursor is located on the right edge of screen Move the cursor to the left in order to position it behind the first l...

Страница 136: ...ctancy domains The false echo can be suppressed by a blocked domain Given that both layer interface echoes are located within their respective expectancy domains they will be identified as being valid The desired state is present that s also why this setting has got no expectancy domain effect Edit an expectancy domain Point of start is the A scan image on the left with two expectancy domains crea...

Страница 137: ...ocated within this expectancy domain As a consequence it will be marked as being invalid and the expectancy domain icon will be added The first expectancy domain does not contain echoes any more This situation considered to be an error condition all further echoes being valid so far will be identified as being invalid and marked by the expectancy domain icon As no valid echoes are available no thi...

Страница 138: ...e function Create see above For demonstration purposes the second expectancy domain is to be deleted now Position the cursor in the expectancy domain to be deleted Press Help Extras to call the A scan image menu Select Expectancy domains followed by Delete Once you have confirmed Delete by pressing OK the A scan image reappears and the selected expectancy domain has been deleted ...

Страница 139: ...en or main menu press function key Statistics to call the statistics In this menu you can view statistics single readings trend diagram and histogram transfer data to a PC print out or delete For general information on statistical terms please refer to section 22 2 13 2 View statistics 13 2 1 Statistical values To view the statistics of a currently active batch press Statistics from the main menu ...

Страница 140: ... appears at the bottom line of list and press OK to confirm your selection Total layer Use arrow up down keys to scroll through the list of single readings of a batch The are listed together with their consecutive numbers The list includes also readings marked by X Such readings have been deleted previously Deleted readings will not be considered for the statistics calculation Example Layer 1 The ...

Страница 141: ...ollowed by Histogram First the histogram as calculated for the total thickness appears On the left column a scale is shown displaying all thickness readings of the active batch The numerals beside the bars and the length of bars indicate the number of single readings Press arrow up key repeatedly to scroll through the histograms of single layers in ascendant order and vice versa The name of layer ...

Страница 142: ...w up down keys to select the requested layer The layer is shown in the head line of diagram Press OK to confirm your selection Total layer The trend diagram is shown and a graphical cursor appears along with an additional window Use the function keys and to move the cursor as requested The additional window indicates the current cursor position with the associated reading consecutive number single...

Страница 143: ... deleted value remain listed on the single readings list However instead of showing a consecutive number it is marked by X and will not be considered for statistics calculation It will neither be printed out nor transferred to any other system However it will be read out and listed as a deleted value by QSoft 7 The above mentioned statistics items Numerical Statistics Histogram and Readings offer ...

Страница 144: ...will appear Press OK to confirm deletion or ESC to abort If you confirm all readings from the active batch will be irrevocably deleted and cannot be restored any more However batch name the parameter set associated to it and the calibration remain valid 13 3 3 Delete a current value A reading may be deleted immediately after its acquisition by pressing ESC The deleted reading will be shown on the ...

Страница 145: ... statistics can be printed out from the statistics screens Numerical Statistics Histogram and Readings Press function key Help Extra from any of these screens Select Print and press OK to confirm The Printing Sequence window will open Select and adjust items 1 to 9 according as required The sequence is also user adjustable so for instance you can adjust two points only such as Statistics and Readi...

Страница 146: ...PC terminal program Before transferring data make sure to adjust the data port accordingly From Main Menu select Setup followed by Data Output Press OK and use arrow up down keys to make your selection RS232 Cable or Infrared IrDA Press OK to confirm See also section 15 6 4 Make sure to set the data format baud rate and Protocol appropriately The Transmission Protocoll option must be set to OFF Wh...

Страница 147: ... function key Send PC to launch data transmission To abort or interrupt transmission press ESC Please note As the data transfer is made in ASCII format graphical representations such as histogram or trend diagram will not be transferred After you have launched the print function the info window Data transfer in progress appears If the communication between Infrared and printer or PC has failed an ...

Страница 148: ...Make sure the Transmission protocol has been enabled if required see section 15 6 4 No further settings required Please note The histogram and trend diagram will be recalculated by the QSoft 7 pro software to be represented in high resolution on your PC That s why the histogram and trend diagram shown on your PC may include more details as compared to the representation on the QuintSonic 7 gauge D...

Страница 149: ...us necessary for setup data management or view of information Press the function key Main Menu to access the Main Menu Use arrow up down keys to selected the requested submenu Press OK to confirm your selection 15 2 Submenu Database See section 11 2 Database 15 3 Submenu Statistics See section 13 Statistics 15 4 Submenu A scan image See section 7 Significance and use of A scan images ...

Страница 150: ...his menu you can view batch properties and readings or call the configuration menu 15 5 1 Properties The following date will be listed Batch name Date of creation Date of last modification User name If you press OK you can switch to the measure mode 15 5 2 Readings See section 13 ...

Страница 151: ...In this mode you can first position the sensor as requested without measurement being launched automatically Once the optimal sensor position has been found press OK to launch measurement The Block size parameter can be used for the so called block value statistics The Graphics parameter is used for switching between the two display modes numerical or graphical see section 4 1 2 and 4 1 3 If Graph...

Страница 152: ...he requested submenu from where you can make the settings Confirm your selection by pressing OK 15 6 2 Display Select Display from the Setup menu to enable or disable the screen and keys backlight option Please note the backlight is power consuming Permanent backlight will shorten the battery storage battery life accordingly Use arrow up down keys to select Brightness Press OK to confirm Select br...

Страница 153: ...cable In this menu you can also configure further data outputs function key Switch See also section 14 Data output and 17 Connectable accessories 15 6 4 1 Data output setting Infrard IrDA In the infrared setting data transfer will be wireless Chose Infrared IrDA if data readings and statistics should be printed out on the MiniPrint 7000 data printer or transferred to a PC Make sure your PC is equi...

Страница 154: ...ssion protocol you can enable or disable the ElektroPhysik transmission protocol Set to ON if you are using QSoft 7 Set to OFF if data transfer is made to another software In this setting data transfer is made in ASCII format with carriage return character CR LF See table below Description Ref of reading Space Reading Measuring system Carriage Return Line Feed Note Only if storage of readings into...

Страница 155: ...tSonic 7 is permanently connected to a PC documentation of readings is commonly made by a quality assurance or production control software installed on a PC If you wish to additionally store the readings in the QuintSonic 7 it is required to enable the Transfer of readings into statistics To prevent a memory overflow the maximum number of readings storable in the gauge should not be exceeded The s...

Страница 156: ...y this setting is not relevant for QuintSonic and can be ignored 15 6 5 User preferences Select User preferences from the Setup menu to adjust the following parameters Language English German Measuring system metric auto µm mm cm cm fixed mm fixed µm fixed Decimal inch imperial mils inch In the metric auto option the gauge selects automatically µm mm or cm according to the thickness being measured...

Страница 157: ... the period of time to elapse after a numerical or alphanumerical entry before your entry is saved automatically Modification lock ON OFF To prevent accidental changes you can enable the modification lock However this will not lock the measure mode so you can continue to take readings The modification lock is password protected Please note the entry is case sensitive In the event of password being...

Страница 158: ...ake your language selection Press OK to confirm or ESC to abort The Total Reset window appears A Total Reset will restore the factory settings Press NO to abort or Yes if you wish to make a Total Reset If you press function key NO only the language setting will be changed if you made any Only press function key YES if you really wish to restore the factory settings Caution A Total Reset will irrev...

Страница 159: ... make screenshots hardcopy to a printer or PC Other quick access options are provided for backlight ON OFF and measuring system metric imperial The quick access to the measuring system may be of interest for users in countries where both measuring systems are used Once the measuring system changed the readings will be indicated according to your setting Use arrow up down keys to make your selectio...

Страница 160: ...ey on the right no inscription Press OK to confirm The sensor service menu appears 16 3 2 A scan images for servicing purpose For servicing purposes this menu provides all A scan images the sensor can produce The reference signal A scan image and the raw measuring signal A scan image are described under section 7 Both images can be called up from this menu Once you have called up the A scan image ...

Страница 161: ...y more and you are your it is not due to an operating error please proceed as follows for verification Hold the sensor into the air and cautiously pull the grey sensor sleeve until its edge lies flush against the measuring surface of sensor As an alternative you can also put the sensor onto an even surface without using couplant and press down the sensor sleeve to the stop The system should provid...

Страница 162: ...g term and intensive use of the QuintSonic sensor the sensor tip may wear off a little causing the wrong echo to change its position In such case the automatic wrong echo suppression will not work properly any more To readjust the echo suppression please follow the instructions below 16 3 5 Readjust the temperature compensation reference point The travel time taken by the signal to travel through ...

Страница 163: ...nu ElektroPhysik QuintSonic 7 163 von 184 once determined without recalibrating measurement might be affected To readjust the reference point for temperature compensation please go to the menu as shown below ...

Страница 164: ...ulti purpose socket for connecting various accessories directly or via a multi purpose connection box 17 2 Direct connection This enables connection of one of the below accessorial devices The foot switch offers an additional connection to the plug in mains unit plug in mains unit 9V 1 12A RS 232C cable cable with converter USB adapter cable ...

Страница 165: ...delete the last reading during acquisition of readings and for selective storage of readings into the statistics see 15 6 4 3 An optical or acoustical alarm device may be connected to the alarm output Electrical data voltage 3 6 V impedance 330 Ohm no picture headphones the internal loud speaker signal is transmitted to the headphones useful in noisy environment ...

Страница 166: ... be connected another multi purpose connection box can be attached in cascade connection In addition the multi purpose connection box features an USB interface Stored readings and statistics can be transferred via the USB or RS232 interface As soon as you connect an RS 232 cable the USB interface connection will be disabled and the RS232 interface enabled multi purpose connection box with lateral ...

Страница 167: ...ty of older storage batteries can be restored through frequent charge and discharge cycles For such purpose special charger units should be used Remove the NiMH storage batteries if the QuintSonic 7 gauge is not in use for a longer period of time For extended stocking periods make sure the NiMH storage batteries are fully loaded Reload regularly at 12 months intervals Recommended storage temperatu...

Страница 168: ...alibration sound velocity calibration for up to 5 points Calibration procedures according to int l norms and standards presently not available as no such norms or standards exist Application standards European standard currently in the draft phase Display Graphics display 160 x 160 Dots backlit user adjustable Data ports IrDA 1 0 Infrared USB and RS232 via adaptor unit available as an option Power...

Страница 169: ... 4 um 1 Repeatability 3 Measuring range 1 0 2 ns corresponding to approx 0 25 um 1 Measuring range 2 0 4 ns corresponding to approx 0 5 um 1 Measuring range 3 0 8 ns corresponding to approx 1 um 1 Measuring range 4 1 7 ns corresponding to approx 2 um 1 Measuring range 5 3 3 ns corresponding to approx 4 um 1 Accuracy 3 Measuring range 1 0 2 ns corresponding to approx 0 25 um 1 2 Measuring range 2 0...

Страница 170: ...Dimensions D 25 mm x L 60 mm Weight 150 g 1 at a sound velocity of 2375 m s average value for industrial paints 2 completely determined by the accuracy3 of sound velocity values the statistical error contribution of the measuring system can be neglected 3 according to DIN 55350 part 13 ...

Страница 171: ...le Description Item QuintSonic 7 gauge and SIDSP sensor 80 163 0000 including SIDSP sensor cable straight 1 m standard length USB adapter cable Software QSoft 7 Basic Edition on CD Operating instructions in German and English on CD 4 x AA batteries type LR06 Plastics carrying case Glycerine ElektroPhysik coupling gel ...

Страница 172: ...Shoulder bag for QuintSonic 7 82 010 0007 Dust bag for QuintSonic 7 85 199 0001 IrDA USB converter For wireless connection of QuintSonic 7 to a PC Direct support of Win9x WinME Win2000 WinXP WinVista Win7 through universal easy to install driver 1m cable with USB connector 85 139 0014 RS 232C adapter cable for QuintSonic 7 85 159 0006 USB adapter cable for QuintSonic 7 80 900 0006 Multi purpose co...

Страница 173: ...y be due to wrong or marginal parameter setting or through insufficient couplant or lopsided sensor contact Check your data input and the A scan image The number of valid echoes on the A scan must be equal to the presets Make sure an appropriate coupling is given if necessary renew couplant and ensure vertical contact of the sensor on the sample No echoes selected The postprocessor echo selection ...

Страница 174: ... power supply for more than one minute clock settings date and time will be wrong Readjust date and time see 15 6 3 Low Bat Though you can continue to measure it is recommended to change batteries If battery voltage is below minimum the gauge will switch off automatically Change batteries Dispose batteries or storage batteries according to your local regulations Modification lock active If the mod...

Страница 175: ...ls however the same names can be used Choose another name Your entry must contain 1 character at least No name has been entered For proper management of batches and directories in the database directory or batch names are required To name a batch or directory at least one character must be entered The Direct Mode batch name is fixed and cannot be changed You have tried to change the name of the Di...

Страница 176: ... have reached maximum number of entries in the data base Delete readings batches or directories in the database you do not need any more Memory optimisation in progress Message appears briefly on display Automatic procedure No further action required Check sensor connection Possible cause the sensor has been removed while the gauge was switched on loose probe connection cable damaged sensor defect...

Страница 177: ...software on your PC Choose the appropriate terminal device Data transfer error Failure during transfer of data to printer or PC Possible causes poor IR connection Check the direct visual contact between the IR windows For data transfer an unobstructed view between the IR devices must be ensured Remove any error sources empty storage batteries in printer Ensure an unobstructed visual contact betwee...

Страница 178: ...s in the list from their mean divided by the number of readings minus 1 1 var 2 n x x x s Standard Deviation STD DEV s s sigma The sample standard deviation is a statistic that measures how dispersed the sample is around the sample mean The sample standard deviation increases with increasing spread out The standard deviation of a set of numbers is the root mean square of the variance s s x x n 2 2...

Страница 179: ...ere The cp index is calculated as follows s LSGL USL Cp 6 where USL Upper specification limit where LSL Lower specification limit Process capability index Cpk In addition to the spread the cpk index also takes into account the location of midpoint as related to the specification limits s LSL x Cpku 3 s x USL Cpko 3 Cpk Min Cpkl Cpku where USL Upper specification limit where LSL Lower specification...

Страница 180: ...auge Connect only to compatible peripheral devices Connecting other devices If you connect the gauge to any other device please refer to the respective instructions manual of such device for detailed information on safety issues Do only connect original accessories as recommended by the manufacturer of QuintSonic 7 Keep away from water The measuring unit is not waterproof Keep in a dry place Keep ...

Страница 181: ...D 50735 Cologne Germany manufacturer of QuintSonic 7 declare in sole responsibility that the products this declaration relates to is in conformity with the provisions of directive 89 336 EEC Electromagnetic compatibility in Germany EMVG Gesetz über die elektromagnetische Verträglichkeit of November 9th 1992 ...

Страница 182: ... error please contact ElektroPhysik and advise your problem Please retain the original packing for future transportation needs if a repair should become necessary For more detailed information on the use applications service or technical data please contact your local agent or ElektroPhysik ElektroPhysik Dr Steingroever GmbH Co KG Pasteurstr 15 50735 Koeln Germany Tel 49 221 75204 0 Fax 49 221 752...

Страница 183: ...tomatic switch off 156 average 179 B backlight 152 159 batteries inserting 11 18 168 175 battery symbol 18 C charger unit external 18 Contrast 152 D data format 146 154 155 Data output 148 153 155 156 E entry accepted time 156 external charger 18 F Floating point 155 foot switch 17 Function key 17 28 161 G Gauge specifications 169 I Infrared 145 146 147 148 153 155 169 ...

Страница 184: ...i purpose socket 17 N norms and standards 169 170 P Print Screen 159 Printing Sequence 145 147 S sensor specifications 155 157 single readings 151 179 specification limits 180 storage battery 152 Supply schedule 172 switch off 18 168 175 T Total Reset 13 159 Transmission Protocoll 146 U USL 180 V variance 179 ...

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Содержание QuintSonic 7

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ElektroPhysik QuintSonic 7, Техническое руководство и инструкции по эксплуатации, Страница: 74 / 184

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Содержание QuintSonic 7

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