prisma quick start guide v18hd

Quick Start Guide Conventional UT

Phased Array

TOFD

Table of contents

1 Introduction to your new device ........................................................................................................................ 4

2 Inserting and charging the battery for the first time ......................................................................................... 5

3 Booting the unit .................................................................................................................................................. 6

4 Connecting probes and USB memory stick ........................................................................................................ 7

5 Load an existing configuration ........................................................................................................................... 9

6 Create a configuration ...................................................................................................................................... 11

7 Starting data acquisition ................................................................................................................................... 13

8 Understanding the conventional UT screen layout .......................................................................................... 15

9 Navigating through menus and views .............................................................................................................. 18

10 Keypad .............................................................................................................................................................. 19

10.1 Keypad definition table .......................................................................................................................... 20

11 Adjusting gain ................................................................................................................................................... 21

12 Automatic 80% gain adjustment ...................................................................................................................... 22

13 Calibration wizards (for conventional UT) ........................................................................................................ 23

14 TOFD option ...................................................................................................................................................... 25

14.1 Creating a TOFD setup ........................................................................................................................... 25

14.2 Calibrating a TOFD setup ....................................................................................................................... 27

14.3 Understanding what you look at ........................................................................................................... 29

15 Phased array Option ......................................................................................................................................... 30

15.1 Understanding at the phased array screen layout ................................................................................ 30

15.2 Moving the A-scan Extractor cursor ...................................................................................................... 33

15.3 Moving the Top/End view box ............................................................................................................... 33

15.4 Adjusting the focus (focal laws) ............................................................................................................. 33

15.5 Calibration wizards (for phased array) ................................................................................................... 34

16 Manipulating cursors (Cartesian, Angular, Gate, Extractor Box, and Extractor) .............................................. 35

17 Adding cursors .................................................................................................................................................. 36

18 Making measurements with gates ................................................................................................................... 37

19 Customizing the Measurements bar ................................................................................................................ 38

20 Taking screenshots and building reports .......................................................................................................... 40

21 Defining scan plan geometry (cartesian/axis reference system) ..................................................................... 41

21.1 Wedge references .................................................................................................................................. 42

21.2 Group reference ..................................................................................................................................... 42

21.3 Part datum ............................................................................................................................................. 43

22 Setting up position-encoded or time-encoded scans ....................................................................................... 44

23 Setting up an encoded scan .............................................................................................................................. 45

24 Selecting a layout with appropriate views ....................................................................................................... 46

25 Menu tree (menu items vary according to the inspection setup).................................................................... 47

26 Ruler and axis color map .................................................................................................................................. 49

27 Power LED Behavior ......................................................................................................................................... 50

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28 Color palettes ................................................................................................................................................... 51

29 Features not covered in this document ........................................................................................................... 52

30 Encoder Connector Pin out............................................................................................................................... 53

31 I/O Connector Pin out ....................................................................................................................................... 54

32 Definitions ........................................................................................................................................................ 55

32.1 Scan types .............................................................................................................................................. 55

32.1.1 Sectorial scan ........................................................................................................................................... 55

32.1.2 Linear scan ............................................................................................................................................... 55

32.1.3 Mono scan (conventional UT) .................................................................................................................. 55

32.1.4 TOFD scan ................................................................................................................................................. 55

33 Copyright, disclaimers, and certifications ........................................................................................................ 56

33.1 Copyright ................................................................................................................................................ 56

33.2 Disclaimer of liability .............................................................................................................................. 56

33.3 Certification (electromagnetic compatibility) ........................................................................................ 57

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1 Introduction to your new device

Before starting, make sure that your Prisma kit includes the following:

1. Drawing: unit, battery and charger

Make sure you have the appropriate probes, wedges, and encoder for the type of inspection you intend

to perform. You may also use the Prisma demo kit, which includes a basic set of accessories necessary to

complete the scenarios described in this document.

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2 Inserting and charging the battery for the first time

2. Drawing: unit back

Unscrew the back door and insert the battery. Remove the waterproof rubber cover over the AC input

socket and connect the AC power adaptor. Before using it for the first time, the battery must be charged

for at least 6 hours; however, the unit can be used while charging.

An optional external battery charger and additional battery packs can be added in order to reduce down-

time and increase productivity.

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3 Booting the unit

The following is the procedure to boot the Prisma unit.

1. Press the ON/OFF key. Please wait; the Prisma requires 35 seconds for a full cold-boot process.

2. At the end of the boot process the graphical user interface (GUI) appears.

3. Drawing: startup screen

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4 Connecting probes and USB memory stick

The following is the procedure to connect probes and a USB memory.

1. Connect the probe to the appropriate connector.

4. Drawing: UT connectors

In order to connect phased array probes, unscrew and remove the grey protective cap that covers the

I-PEX connector located on the right-hand side of the Prisma. The cap can be stored on the unit by

screwing it on the back panel of the unit, over the CE mark.

IMPORTANT

When a phased array probe is not connected to the unit, the connector protective cap must be

reinstalled in order to prevent water and dust ingress.

If the phased array probe does not have an I-PEX connector, Sonatest can supply an appropriate

adaptor.

5. Drawing: X4 phased array probe DAAH phased array probe X-clamp

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Your Prisma will be equipped with either BNC or Lemo 1 connectors for conventional UT and TOFD

probes. Sonatest can similarly supply appropriate cables and adaptors to suit probes with other types of

connectors.

You may use either, or both, channels A and B for conventional UT or TOFD. For pulse-echo scans,

connect the probe to the Tx/Rx connector, labelled T on the case. For pitch-catch scans, connect the

transmitter probe to the Tx/Rx T connector and the receiver probe to the Rx R connector.

2. Insert a USB memory stick into USB port 1. A miniature USB memory stick is supplied, which allows the

cover to close while in use.

6. Drawing: PC type connectors

Three USB connectors and an Ethernet connector are located on the side of the unit; protected by the

waterproof cover. The USB ports can be used to connect external memory devices, a keyboard, a mouse,

or a USB hub should you need to connect additional devices. The Ethernet port can be used for remote

session support and to drive an external display via a VNC connection. If a USB memory device is

connected to the Prisma then the user may opt to save configuration (.utcfg) and data (.utdata) files to it.

Otherwise, by default and in the absence of an external memory device, these will be saved to the 5-GB

internal memory.

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5 Load an existing configuration

The following is the procedure to load files.

1. Press the key to open the startup screen where you can select a user-defined or an example configuration file.


2. Use the Click Wheel to select Load Configuration and press .

8. Drawing: Using the click wheel

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3. Press the button to toggle through the available memory location options. If you have connected a USB memory device, the list will include the following:

a. The Internal partition is where you can save your own files.

b. The Templates partition is where predefined example configuration files are stored.

c. A USB device will provide external memory storage options.

4. Select Templates Read Only.

9. Drawing: Media Browser (file open)

5. Press the key to toggle between the different views.

6. Press the key to select the Menu bar on the left of the screen.

7. Select the appropriate file in the list using the Click Wheel .

8. Press to open the selected file.

File Extension Description

.utcfg Contains the entire configuration for an inspection i.e. the probe, the wedge, the type of

scan, the position of each cursor, the layout and the color palette to use.

.utdata Contains the recorded data and everything a .utcfg file contains.

.pdf Reports created by Prisma use the PDF file format. Imported PDF files can also be

displayed by the Prisma.

.png Screen captures created by Prisma use the PNG image standard.

(PNG: portable network graphics)

Table 1: List of supported file types.

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6 Create a configuration

The following is the procedure to create a new configuration with the help of the New Inspection Wisard.

1. To create a new configuration, press the key to open the startup screen.

2. Use the Click Wheel to select Start New Inspection Wizard and press .


3. Follow the instructions appearing on screen to set the parameters one by one.

11. Drawing: New Inspection Wizard (Step 1)

4. Select the required inspection type (conventional, TOFD, or phased array) and press on the keypad.

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The number of steps required to complete a configuration depends on the option selected. A typical

sequence of steps is as follows:

12. Drawing: New Inspection Wizard (step list)

5. After each step, press to progress to the next step.

OR

Press to return to the previous step.

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7 Starting data acquisition

The Prisma software simplifies your workflow by using three operational modes:

Configuration

Acquisition/Recording

Analysis

These modes are controlled using the STOP , PLAY , and REC keys. The current operation

mode is always displayed at the top-right corner of the screen by the and icons.

1. After opening a configuration file (.utcfg), the Prisma always starts in Configuration mode, also referred

to as the STOP mode. Before starting the data acquisition it is good practice to review your setup.

In Configuration mode the Prisma displays the following screen:

13. Drawing: UT Configuration mode (layout)

1. Menu

2. Configuration summary view

3. 3D view

4. Contextual help view

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2. Press the key to select the Menu bar then use the Click Wheel to navigate.

3. Press to edit a parameter.

4. To navigate the various menus press the and arrow keys. Press or , or rotate your finger

around the OK button to move up or down a menu.

14. Drawing: UT Configuration mode (components)

1. Tab bar (selected menu)

2. Menu Item

3. Selected menu Item

4. Category

5. Tab bar

6. 3D View

7. Battery status

8. Information bar

9. Contextual help view

5. If necessary apply couplant to the part to be inspected.

6. Position the probe on the part.

7. Press to change to the Acquisition mode ( ).

At any time you can return to the Configuration mode by pressing the key.

You are now ready to select the Calibrate tab and start the calibration process.

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8 Understanding the conventional UT screen layout

It is important to understand the components of the screen layout. This section guides you through the

main elements of the Acquisition or PLAY mode.

15. Drawing: UT Acquisition mode (layout)

1. Menu

2. A-scan view

3. C-scan View

4. B-scan view

A number of alternate screen layouts can be selected from the View menu

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16. Drawing: UT analysis mode (component)

1. Measurements bar

2. Calibration indicators

3. Instrument state (Acquisition, Configuration, Recording, Analysis) and battery status

4. Scroll bar

5. View layout (current in green)

6. Encoder position

7. View measures

The division of the screen layout into areas is called a layout. Different layout options are available

depending on the inspection type. To change the layout press to select the Menu bar on the left

of the screen and use the key to select the View tab, use the Click Wheel to select Select

Layout, press and use the Click Wheel again to select the appropriate layout.

In the image above, the layout comprises one A-scan and one B-scan. This is the result of an encoded scan

of a 0 dual crystal probe over a step block. At the bottom, the colored spots represent the amplitude of

the underlying A-scan sample. The X-axis is the encoder scan axis. The Y-axis is the depth into the test

item.

Each view has its own cross-hair cursors, which can be disabled from the View tab. In drawing 16 above

the A-scan view has one gate and one Cartesian cursor (cross-hair). The B-scan view has two Cartesian

cursors. The Cartesian cursor location will report the depth (D) and true surface distance offset (SD). If

you move the cursor over a red region in the B-scan it will provide you the exact location of the flaw in

the part, regardless of the angle at which the peak signal occurs. All measurements are referenced from

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the wedge reference (Wedge Reference) point. The wedge reference location depends on the type of

wedge you are you using. The wedge reference is represented by the red dot in the 3D and scan plan

views displayed in Configuration mode. For more details see the Defining scan plan geometry

(cartesian/axis reference system) section.

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9 Navigating through menus and views

17. Drawing: Menu bar, view selection, cursor selection

1. Press to select the Menu bar, and use the Click Wheel to navigate.

2. Press to edit a parameter and press again to confirm the new value.

OR

Press the key to cancel making a change.

3. Press to toggle between the different views.

4. Press to toggle between the different cursors of the selected view, then use the Click Wheel to

move the selected cursor (displayed in blue).

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10 Keypad

18. Drawing: keypad

The keypad comprises the following areas. Details of the functionality of each button are provided in Table 2

1. Click wheel

2. Main controls to access menus, views and cursors

3. Alphanumerical keypad and shortcuts

4. Mode selection: PLAY/PAUSE, STOP, REC

5. Files save and load, use these buttons to:

a. LOAD

i. Create a new configuration (setup)

ii. Open a configuration (setup, .utcfg file)

iii. Open a report (PDF)

iv. Open a data file (.utdata file)

b. SAVE

i. Save configuration (setup, .utcfg file)

ii. Save screen capture image

iii. Create and save Inspection report

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10.1 Keypad definition table

Button Button Name USB Keyboard Short Function Description

CANCEL Escape Cancels an ongoing value change and resets to the previous value. Exit from a popup window.

Click Wheel --- Rotate your finger clockwise and counter clockwise to scroll up and down through a menu, to increase/decrease a parameter value, to move cursor in view area or zoom in/out in 3D view. Also acts as LEFT/RIGHT key to move during text entry.

UP / DOWN ARROWS Arrows

Moves from one menu item to another. Changes a parameter value. Moves up and down the selected cursor or gate.

LEFT / RIGHT ARROWS Arrows Moves from one menu tab to another. Moves the selected cursor or gate to left and right.

OK Enter Edit and confirm new value or selection.

MENU M Get to the menu and allows menu navigation.

VIEW V Toggles between the various views. Display the Measurements bar (in Live mode)

CURSOR C Toggles between the various cursors of the currently selected view. Also acts as Backspace during text entry.

dB D Changes the gain value of the selected scan. If pressed and held for 3 seconds, it will automatically adjust the gain to 80% of the selected gate (if RefAmplitude is set to 80%).

WELD W Shows or hides the weld overlay for the selected view.

ZOOM IN/OUT Z Zooms in or out of the view, in analysis mode only.

MAX / MIN X Maximizes or minimizes any selected view.

GATE G Focuses or toggles between gates.

RANGE A Changes the range path value of the selected scan.

F1 / HELP F1 Access the Contextual Help, Quick Start Guide and User Guide Documentation.

F2 / INFO F2 Displays the view information menu or for wizards returns to previous step or page.

F3 / SET REF F3 Resets the encoders position to the origin, or for wizards advances to the next step or page. .

PLAY/PAUSE P Starts or pauses live acquisition of ultrasound images.

STOP T Stops live acquisition or recording or goes a step in configuration mode.

RECORD R Starts the recording mode permitting data to be saved on completion or termination of the scan.

SAVE S Saves a file (configuration, screenshot or report).

LOAD O Loads a configuration file,. displaying afile list to choose from.

REJECT --- Illuminated when reject mode is activated

ALARM1 &2 --- Illuminated when any configured gates are triggered

ON/OFF & Battery indicator

---

Powers the instrument on (Hold down) or shuts it down. Lightis green when the device is ON. Refer to the section 27 Power LED Behaviour

Table 2: Keypad button functionalities

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11 Adjusting gain

To adjust the gain, press the key to open the gain items and set the gain of the current scan.

Note: If you have multiple scans (only in UT), you should select the appropriate scan by pressing

before pressing the key.

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12 Automatic 80% gain adjustment

The following is the procedure to adjust the gain automatically.

1. Press the gate key , move the gate over the peak to be maximized using the Click Wheel

arrows , , , and

2. Press and hold the key for 3 seconds and it will automatically adjust the gain to the value of the

Ref Amplitude parameter of the selected gate, which is 80% by default.

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13 Calibration wizards (for conventional UT)

The Calibration tab displays the available calibration wizards. The menu items on this tab are displayed in

the order in which the calibrations should normally be performed. If you are using a multi-scan setup

each scan must be calibrated independently. The wizards will facilitate the calibration of the unit taking

into account the reflector type, type of calibration block, user supplied parameters, and the type of

probe/wedge used.

Type Description

Velocity & Zero

Wizard...

Guides you through a calibration accounting for material

velocity and probe zero.

TCG/DAC/DGS

Wizard...

Guides you through the setup of TCG, DAC, or DGS curves.

Encoder

Wizard...

Guides you through the calibration of the encoder resolution.

Clear Calibrations Resets one or more calibrations.

Table 3: Conventional UT calibration wizards

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Figures 19 and 20 show the examples of the Velocity & Zero and TCG Wizards.

19. Drawing: Velocity and Zero Wizard

20. Drawing: TCG Wizard

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14 TOFD option

14.1 Creating a TOFD setup

It is possible to either load an existing configuration or use the New Inspection Wizard to create and

calibrate a new TOFD setup.

This section shows how the New Inspection Wizard is used to create a new configuration.

1. Press the key to open the startup screen and, using the Click Wheel , select Start New

Inspection Wizard and press .

21. Drawing: startup menu

2. Select TOFD and press .

V1.1 26

22. Drawing: New Inspection Wizard (step2)

3. Select the type of material. This will set the material sound speed which will be used to generate an initial probe centre spacing (PCS).

4. Enter the part thickness. This information will be used to generate a crossing point at 67% depth of the part thickness. When all of

the parameters have been entered press to move to the next step.

5. Configure the probe by adjusting the parameters and press once complete.

6. Configure the wedge the same way.

V1.1 27

7. In the Geometry step, the wizard will propose a PCS derived from the values previously entered. Set the probe to this exact distance (exit point to exit point).

23. Drawing: New Inspection Wizard (Step 5)

8. In the Path step the wizard shows a list of parameters computed from information entered previously. Modify the Gain, the Start Path, and the Range.

9. Make sure the lateral wave, the back wall, and the converted mode are visible. Make adjustments

accordingly and then press to move to the next step.

10. Configure the encoder by appropriately adjusting the parameters and press once done. 11. Modify the measurement type if desired (measurement using hyperbolic cursors is automatically

selected). Press once done.

14.2 Calibrating a TOFD setup

Having set the PCS, it remains to calibrate the TOFD setup by adjusting the speed of sound and the ruler

position.

1. Move to the Scan tab with the or arrow keys.

2. Select the TOFD category by pressing the or , or rotate your finger around the Click Wheel

.

3. Expand the TOFD category by pressing .

V1.1 28

4. Modify the Ruler LW Pos parameter (it controls the white cursor in the A-scan view) to align the ruler

on the TOFD view with the first positive peak of the lateral wave.

24. Drawing: TOFD component

1. Ruler backwall (BW) position

2. Ruler lateral wave (LW) position

3. Non-linear TOFD ruler

5. Make sure that the Ruler BW Pos item is set so that the blue cursor in the A-scan is aligned to the first

negative peak of the backwall echo.

If it is not aligned, try adjusting the material velocity on the Part menu, the zero on the Scan menu, or

the probe spacing on the scanner.

V1.1 29

14.3 Understanding what you look at

The following instructions will guide you through the essential elements of the Acquisition or PLAY mode

.

1. A-scan view

2. TOFD view

25. Drawing: TOFD layout


appropriate to each inspection type.

To change the layout:

1. Press to activate the Menu bar on the left of the screen and use the key to select the View

tab.

2. Use the Click Wheel to select Select Layout, press , and use the Click Wheel again to select

the appropriate layout.

In the image above, the layout comprises one A-scan view and one TOFD view (the B-scan is called the

TOFD view when making TOFD inspections). This is the result of an encoded scan. The grey is 0% FSH, the

white is +100% FSH and the black is -100% FSH.

The orange cursors in the TOFD view are called Hyperbolic cursors. The double cross-hair cursor

indicates which A-scan is showed in the A-scan view. Changing the extractor angle in the TOFD scan view

will therefore change the A-scan signal displayed in the right-side view.

There are several other functions which perform lateral wave straightening and lateral wave removal

These are explained in detail in the User Guide.

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15 Phased array Option

15.1 Understanding at the phased array screen layout

It is important to understand the components of the screen layout. This section guides you through the

main elements of the phased array Acquisition mode.

26. Drawing: phased array analysis and acquisition layout

The Acquisition mode screen elements:

1. Menu

2. Sectorial scan (S-scan) view

3. Top (amplitude %) view

4. End (amplitude %) view

5. A-scan

6. B-scan

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27. Drawing: phased array analysis and acquisition (component)

The Analysis and Acquisition mode screen elements:

1. Measurement bar

2. Calibration indicator

3. Instrument state (Acquisition, Configuration, Recording, Analysis)

4. Scroll bar

5. View layout (current view in blue)

6. Encoder position

7. View measures


appropriate to each inspection type.

To change the layout:

1. Press to activate the Menu bar on the left of the screen and use the key to select the View

tab.

2. Use the Click Wheel to select Select Layout, press and use the Click Wheelagain to select the

appropriate layout.

3. Use the Click Wheel to select Select Layout, use the Click Wheelto select the appropriate layout.

In the drawing 27 above, the pie-shaped image is referred to as a sectorial scan or S-scan. It is an image

created from the samples of 71 beams from 35 to 70, with a 0.5 step. The colors code the amplitude of

the underlying A-scans.

The dashed angled line on the S-scan is referred to as the Angular Extractor cursor. This cursor indicates

the origin of the A-scan which is displayed in the A-scan view. Changing the extractor angle in the S-scan

V1.1 32

will change the A-scan angle displayed in the A-scan view. This is one advantageous feature of phased

array, i.e. it permits the interrogation of multiple beam angles in real-time.

The cross-hair cursor on the S-scan is called a Cartesian cursor. The cross-hair location will report the

depth (D) and true surface distance (SD) offset. If the Cartesian cursor is moved over a coloured region on

screen it will return the location of that position regardless of the angle at which the peak signal occurs.

All measurements are referenced from the wedge reference point. The wedge reference location

depends on the type of wedge you are you using, if any. The wedge reference is represented by the red

dot in the 3D and scan plan views used in the Configuration mode.

For more details see the Defining scan plan geometry (cartesian/axis reference system) section.

Each view has its own rulers which can be used to quickly evaluate the location of flaws.

28. Drawing: phased array analysis and acquisition layout, ruler identification

Each A-scan has independent signal gates. The gates can be positioned along the time/distance axis. Each

gate has a threshold level which if exceeded by the signal triggers a measurement, the result of which is

displayed next to the relevant gate; whenever the signal crosses the gate, a measurement is calculated

and displayed on the side of the gate. Measurements are also presented at the top of the screen.

The green triangle at the top right of the screen indicates that real-time imaging mode is active and that

ultrasonic pulses are continually being generated. Real-time data can be recorded by pressing or the

image frozen by pressing

V1.1 33

15.2 Moving the A-scan Extractor cursor

The following is the procedure to move the A-scan Extractor cursor.

1. In acquisition mode press the key and select the desired S-scan view.

2. Press the key (once or multiple times) to select the extractor in the current view.

3. Use the Click Wheel to move the selected Extractor cursor to the desire position.

15.3 Moving the Top/End view box

The following is the procedure to move the top/End view box.

1. In acquisition mode, press the key (once or multiple times) to select the S-scan view.

2. Press the key (once or multiple times) to select the extractor in the current view.

3. Use the Click Wheel ( ) to select to move the selected box.

4. Press to modify the box size then use the Click Wheel to change dimensions and press again to

accept them.

15.4 Adjusting the focus (focal laws)

When using phased array it is important to be able to adjust the focusing of the ultrasonic sound beam.

This is achieved using the Focus Dist item. The focusing capability is restricted to the near-field length. In

other words, beam focusing is only achievable to distances shorter than the near-field length. For weld

testing, a non focused beam is often preferred and this can be achieved by setting the focal distance to a

value much greater than the near-field length. Refer to the 3D view to know the near-field length of the

probe.

1. Press the key.

2. Use the RIGHT ARROW key on the Click Wheel to reach the Scan tab.

3. Use the DOWN ARROW key to reach the Focus Dist item.

4. Press the key to modify the value.

5. Rotate the Click Wheel to increase or decrease the focal distance.

6. Press the key to accept the new value.

V1.1 34

15.5 Calibration wizards (for phased array)

The calibration wizards are listed in the sequence that they are normally used. For a multi-scan inspection

each scan must be calibrated separately.

Type Description

Velocity & Zero Wizard

Guides you through calibration of the material velocity and the

measurement zero.

Wedge Delay Wizard

Guides you through calibration of the Wedge Delay. Only

applicable to phased array.

Sensitivity/ACG Wizard

Guides you through calibration of Angular Corrected Gain

(ACG) sensitivity. Only applicable to phased array.

TCG/DAC/DGS Wizard Guides you calibration of Time Corrected Gain (TCG), Distance

Amplitude Correction (DAC) curves and Distance Gain Sizing

(DGS or AVG).

Encoder Wizard

Guides you through calibration of the encoder resolution.

Element Check Wizard

Guides you through the process for determining if an element

is defective.

Clear Calibrations Resets one or more calibrations.

Table 4: List of phased array wizards

Displayed below is a screen capture of the Sensitivity Wizard:

29. Drawing: phased array, Sensitivity Calibration Wizard

V1.1 35

16 Manipulating cursors (Cartesian, Angular, Gate, Extractor Box, and Extractor)

The following is the procedure to move the different cursors available in all the views.

1. In Acquisition mode use the key (once or multiple times) to select the appropriate view.

2. Use the key (once or multiple times) to select the appropriate cursor in the current view.

3. Use the Click Wheel to move the selected cursor.

4. To change the gate size press then change size by using the Click Wheel.

V1.1 36

17 Adding cursors

Table 5 lists the available cursors.

Type Description Drawing

Gate Gates are used to make flank and peak measurements in A-scan views. When the gate is triggered by an echo, the peak amplitude level is

displayed, as well as its absolute position in Depth (), Surface

Distance () and Sound Path (). All Sound Path measurements use

the SCAN Travel Mode, thus measurements can either represent the

Full or Half Sound Path in the part (mm or inches), or the Full or Half

Sound Time spent in the part (s).

The Gate quick access key is

Extractor The extractor is used to extract A-scans from L-scans or S-scans.

Cartesian Cartesian cursors are used to measure surface distance (SD) and depths in S-scans, L-scans and A-scans.

Angular Angular cursors are used to perform sound path measurements in S-scans and L-scans.

Extractor

Box

The Extractor Box is used to extract Top and End views from S-scans and

L-scans.

Hyperbolic Hyperbolic cursors are used to evaluate surface distance (SD) and depth measurements in a TOFD (Time of Flight Diffraction) scan. The TOFD

view is a B-scan view from a pitch-catch probe geometry. The

hyperbolic cursor is used because the depth measurement is non-linear.

Table 5: List of available cursors.

The manual addition of a cursor to a view is achieved as follows:

1. In Acquisition mode, press the key (once or multiple times) to select the appropriate view.

2. Press and select the View tab.

3. Use the Click Wheel to select the Add Cursor item.

V1.1 37

18 Making measurements with gates

Gates are the most common and precise way to make measurements. A gate measurement is made as

follows:

1. In Acquisition mode, use the gate key (once or multiple times) to select the appropriate gate.

2. Use the Click Wheel to move the selected gate to the desired position.

3. To change the gate size, press and change size using the Click Wheel.

V1.1 38

19 Customizing the Measurements bar

30. Drawing: Measurement bar

The Measurements bar is shown at the top of the screen in PLAY mode, when a menu is not selected and

a view is selected (in PLAY mode press the button). It can also be shown permanently in PLAY

mode by enabling the Keep Measures preference.

To select desired measures from cursors:

1. Press if you are not already in PLAY mode.

2. Select the Measures menu and select Select Measures.

31. Drawing: Measure menu

3. Select one of the measurements items (1 through 5) and press to modify it.

32. Drawing: select the Measure menu

Each measurement item is composed of three parts; the cursor identifier, the reference point, and the

type of measurement. For example, G1 ^ 2 means the true depth in the second half skip of the

peak detected in the gate number 1.

V1.1 39

The following three tables present the details of each measurement type.

Identifier Cursor Type A Angular/Extractor C Cartesian G Gate H Hyperbolic (TOFD)

SQ Square Box AB Angular Box

DAC Distance amplitude curve

Ref Reference Point ^ Peak (or point) / Flank

Start First point of a gate

Stop End point of a gate

True depth(considering half-skips)

Meas MeasurementType % Amplitude in percent

Depth

Sound path (from exit point)

Surface distance (from wedge reference)

Table 6: List of available measurements

V1.1 40

20 Taking screenshots and building reports

The following is the procedure to make screen capture and produce reports.

1. To make a screenshot or create a report press the key.

2. Select Report or Screen Capture (refer to sections about loading and saving files).

V1.1 41

21 Defining scan plan geometry (cartesian/axis reference system)

The scan plan is defined on the Geometry tab where the position of the probes and wedges are set.

Table 7 lists the icons used to visually identify the principal data on the scan graphic.

Table 7: 3D view symbols

V1.1 42

21.1 Wedge references

Table 8 defines the wedge reference ( ) for various different probe-wedge combinations for phased array and conventional UT configurations. Note that the wedge reference is different in each case.

Phas

ed A

rray

Probe without wedge At the centre of the wedge contact surface

Probe with a flat wedge At the centre of the wedge contact surface

Probe with an angular wedge At the centre of the wedge front edge

Table 8: List of wedge reference point definitions

21.2 Group reference

When an inspection involves more than one probe, the probes are positioned relative to a group

reference point, or Grp Ref, identified by . This can be located anywhere on the probe retention

assembly, but it is a good practice to choose a position coincident with the centre line of the weld or scan

axis and the probe/wedge assembly. See drawing 33.

Probe Type Reference Drawing

Con

ven

tion

al UT

Probe with or without wedge At the beam exit point

V1.1 43

33. Drawing: group reference (Grp Ref)

21.3 Part datum

The part datum, identified by , is a point chosen on the inspected part which acts as the spatial origin

for all of the acquired data. Where possible it is recommended that the part datum is coincident with the

Grp Ref point. Alternatively, an offset between the Scan Start Position on the Encoding tab and the Grp

Ref can be defined.

34. Drawing: Part Datum

V1.1 44

22 Setting up position-encoded or time-encoded scans

There are two main types of encoded inspection:

Time-encoded scans, which are typically manual, free running scans where UT pulses are

continuously emitted.

Position encoded scans, which acquire data when the position encoder triggers the arrival at the

specified position.

1. Press STOP to return in configuration mode.

2. Use the RIGHT ARROW key on the Click Wheel to access the Encoding tab.

3. Press to edit the Encoding Setup parameter.

4. Select:

None for manual (free running)

Scan Axis Only for encoded (encoder triggered)

5. Configure the Encoding tab parameters appropriately for the encoder.

6. If Scan Axis Only is selected, connect the encoder to the socket marked E on the back panel of the unit.

35. Drawing: unit back-panel connectors

7. Press PLAY and select the appropriate layout.

8. If Scan Axis Only is selected, try moving the encoder/scanner to check it is functioning

9. Use the Encoder Wizard to set the encoder step and granularity.

Note: In order to connect two encoders a Y-splitter cable is used for the connector marked E.

V1.1 45

23 Setting up an encoded scan

The following is the procedure to set up an encoded scan.

1. Press the STOP key to return to the Configuration mode.

It is easier to review Geometry parameters in Configuration mode.

2. Review the parameters on the Geometry tab.

3. Navigate the menus using the and arrow keys. Press or , or rotate your finger around the

OK button to move up or down the menu. Press to select from the following parameters to edit:

Geometry: W1 Index Offset (W1 stands for "Wedge 1", or "Probe 1" if theres no wedge)

Geometry: W1 Scan Offset (W1 stands for "Wedge 1", or "Probe 1" if theres no wedge)

Geometry: W1 Rotation (W1 stands for "Wedge 1", or "Probe 1" if theres no wedge)

4. Review the parameters on the Encoding tab use an encoder is intended:

Encoding: Encoding Setup

Encoding: Scan Enc. Type (the type of encoder used)

Encoding: Scan Start Pos (the start position )

Encoding: Scan Distance

Encoding: Scan Step

5. Press PLAY to change to the Acquisition mode.

6. Press and to reset the encoder position, as required.

V1.1 46

24 Selecting a layout with appropriate views

The type of inspection determines the views that are available. Table 9 lists the different

view types.

View Description

A A-scan view

B B-scan view

C C-scan view

D D-scan view

S S-scan view

TOP Top view

END End view

TOFD TOFD view

MTOP Merged Top view

MC Merged C-scan

B-LOG Thickness B-Scan view

Table 9: List of available view types

1. Select the View tab and press to open the list of available views.

36. Drawing: view layout

2. Use the Click Wheel to select the desired layout.

V1.1 47

25 Menu tree (menu items vary according to the inspection setup)

Inspection

Hardware Settings

Voltage Phased Array

Voltage Mono

Mono Pulse Damping

Report Info

Job/Customer

Site

Operator

Qualification

Procedure Ref

Couplant

Report Settings

Procedure Report

Report Type

Cursors Info

Inspection Info

Probe Info

Wedge Info

Scan Info

Encoder Info

DAC Info

DGS Info

3D Views Info

Warnings Info

Logo

Change Logo File

Clear Logo File

Menus

Lock Setup

Short Menu

Calibrate

Velocity & Zero Wizard...

Wedge Delay Wizard...

Sensitivity/ACG Wizard...

TCG/DAC/DGS Wizard...

Encoder Wizard...

Element Activation Wizard...

Clear Calibrations

Probe

Add

Delete

Load

Probe Type

Identifiers

Manufacturer

Model

Serial

Settings

Frequency

Pulse Width

Connected To

Advanced Settings

First Element Pin #

Nb Elmnt Dim 1

Elmt Pitch Dim 1

Elmt Size Dim 1

Elmt Offset Dim 1

Elmt Size Dim 2

Elmt Offset Dim 2

Element Layout

Save

Encoding

Encoding Setup

Encoders Name

Reset All Position

Scan Axis

Scan Axis Name

Scan Enc Type

Scan Enc Resolution

Scan Start Position

Scan Stop Position

Scan Distance

Scan Step

Scan Invert Direction

Statistics

Data File Size

Max Phys. Enc. Speed

Measures

Select Measures

- Measurement 1 to 6

Encoded Axis Reference

Wedge

Load

Wedge Type

Identifiers

Manufacturer

Model

Serial

Settings

X Offset

Contact Surface

Cut Angle

Advanced Settings

Wedge Velocity LW

Diameter

Back Height

Front Height

Width

Length

Roof Angle

Probe Back Dist

Probe Side Dist

Probe Inset

Save

Part

Properties

Material

Part Geometry

Thickness

Velocity LW

Velocity SW

Identifiers

Component

Serial #

Location Ref

Weld Geometry

Weld

HAZ

Root Gap

(Weld geometry)

Calibration Block

Cal. Block Type

Cal. Block Serial #

V1.1 48

Scan

Add

Delete

Scan Type

Gain

Gain

Reference Gain

Set Reference Gain

Software Gain

Auto FSH%

Reference Amplitude

Acquisition Area

Resolution

Start Angle

Stop Angle

Angle

Start Path

Range Path

Stop Path

Zero

Wave Mode

Travel Mode

Focusing

Number of Active Element

Double Resolution

Focalisation

Focal Distance

TOFD

Ruler Lateral Wave Position

Theo Time Lateral Wave

Theo Time Lateral Wave

PCS

Beam inter Pct

Straightening

- Activate Straightening

- Show Indicators

- LW Trig. Tolerance

- LW Trig. Threshold

LW Removal

- Activate LW Removal

- LW Removal Indicator

- LW Removal Factor

- LW Zone Start

- LW Zone Range

TX

PRF

Scan (continued)

RX

Signal Rectification

Digital Filter

Analog filter

Sub-Sampling

Rejection

Reject Threshold

Smoothing

Contouring

Cont. Decay Rate

Averaging

IFT Active

- IFT Start, Range, Threshold

Acq. Freq

Probe Connect

Probe TX/RX

Elements

First Element TX/RX

Last Element TX/RX

Statistics

Beams Quantity

Samples Quantity

Path Resolution

Cursor

Name

Type

Color

Position

Level/Threshold

Surface Dist (Start/Stop)

Depth (Start/Stop)

True Depth (Start/Stop)

Encoding Scan/Index Axis

Focal Law

Angle

Sound Path

Gate Start/Stop

Gate Width

Measures

Gate Follow Peak

Triggered By

Alarm

Gate Alarm

Delete Cursor

View

Select Layout

View Orientation

Add Cursor

Palette Properties

View Palette

Palette Position

Palette Ampl. Low

Palette Ampl. High

Palette Depth Low

Palette Depth High

Data Extraction

Depth/Amp Mode

Depth/Path Mode

Data Gate

Reference Gate

IFT Culling

Rulers & Grids

Rulers

Depth/Path Mode

Grids

Scroll & Zoom

View Scrolling Mode

Frame Start

Zoom

Geometry

Probe/Wedge 1

W1 Index Offset

W1 Scan Offset

W1 Rotation

Encoding Area

Enc. Area CL Pos

Enc. Area CL Offset

Enc. Area Rotation

Prefs

Media Browser

Display

System

Network

Support

V1.1 49

26 Ruler and axis color map

View Axis Content

A-scan Amplitude

Sound path

B-scan Scan

Sound path

C-scan Scan

Surface distance

D-scan Index

Sound path

S-scan Surface distance

Depth

Top Scan

Surface distance

End Scan

Depth

TOFD Scan

Depth (non-linear)

Table 10: List of ruler color map

V1.1 50

27 Power LED Behavior

The unit is turned off

Power LED Color Status

BLUE Charging

OFF Charged, or no power cord

When unit is turned on (on battery power)


RED Battery critical (0% to 20%)

YELLOW Battery low (20% to 30%)

GREEN Battery OK (30% to 100%)

When unit is turned on (plugged in)


BLUE Charging

GREEN Charged

Table 11: List of power LED behavior

V1.1 51

28 Color palettes

Palette Names Color Gradient

3 level threshold

ABF Amplitude

Aeronautic

Cubic Law

Fire Ice

Rainbow

Spectrum

Thermal

Greyscale

TOFD

Table 12: List of color palettes

V1.1 52

29 Features not covered in this document

The following list of features are not covered in this quick start guide, but are addressed in the full User

Guide.

Calibration on each type of reflectors

DAC

Split DAC

DGS

Split DGS

API

AWS measurements

TCG

BEA

TOFD lateral wave straightening

TOFD lateral wave removal

Data analysis

Detailed documentation of all type of measurements

Example of typical inspections

Enabling software options

V1.1 53

30 Encoder Connector Pin out

1. Red -> VCC

2. Blue - > ENC1_A

3. Green -> ENC1_B

4. Orange -> ENC2_A

5. NC

6. White -> ENC2_B

7. NC

8. Black -> GND

V1.1 54

31 I/O Connector Pin out

Pin # Description

1 (red dot) Power 5V, 300mA

max.

2 5V TTL, Trig-Sync

3 Output, Gate 1

4 Output, Not yet

defined

5 Output, Not yet

defined

6 Input, Not yet

defined

7 Input, Not yet

defined

8(center pin) Power return

Ground

V1.1 55

32 Definitions

32.1 Scan types

The Type parameter on the Scan tab allows the user to select between Sectorial, Linear, Mono, and TOFD

scans. Scans can be configured to be either pulse-echo (PE) or pitch-catch (PC), with the exception of

TOFD which is always pitch-catch. The scan types are described in the following sections.

32.1.1 Sectorial scan

The sectorial scan, also called azimuthal scan or more commonly S-scan, is a cross-sectional image of the

inspected volume. It represents an angular coverage of the volume under the probe.

32.1.2 Linear scan

The linear scan, or L-scan, is represented on screen as a parallelogram view, directly under the probe or at

a specific angle. The L-scan is created from multiple A-scans from different exit points, but with the same

beam angle. A small group of elements are activated in order to generate each beam (focal law) and the

group of activated elements is cycled along the elements array for each subsequent beam.

32.1.3 Mono scan (conventional UT)

Mono scan refers to the conventional A-scan representation acquired using a single element or pair of

elements in the case of a dual probe. The A-scan is a waveform representing the amplitude of the

ultrasound signal as a function of time or propagation distance. Events in the A-scan , or echoes, occurs

when the ultrasound wave packet encounters a discontinuity, which may be a defect, such as a crack, or

may be due to the intrinsic geometry of the item inspected.

32.1.4 TOFD scan

The time-of-flight-diffraction (TOFD) scan involves a pitch- catch arrangement of conventional UT probes

from which the data is displayed using a greyscale B-scan to encode multiple A-scans.

V1.1 56

33 Copyright, disclaimers, and certifications

33.1 Copyright

Copyright 2013 Sonatest Limited

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or

transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise,

without the prior written permission of Sonatest Limited.

E-mail: [email protected]

Web: www.sonatest.com

33.2 Disclaimer of liability

All statements, technical information and recommendations contained in this manual or any other

information supplied by Sonatest Limited in connection with the use, features and qualifications of the

Prisma is based on tests believed to be reliable, but the accuracy or completeness thereof is not

guaranteed. Before using the product you should determine its suitability for your intended use based on

your knowledge of ultrasonic testing and the characteristics of materials. You bear all risk in connection

with the use of the product.

You are reminded that all warranties as to merchantability and fitness for purpose are excluded from the

contract under which the product and this manual have been supplied to you. The Sellers only obligation

in this respect is to replace such quantity of the product proved to be defective.

Neither the seller nor the manufacturer shall be liable either in contract or in tort for any direct or

indirect loss or damage (whether for loss of profit or otherwise), costs, expenses or other claims for

consequential or indirect compensation whatsoever (and whether caused by the negligence of the

company, its employees or agents or otherwise).

V1.1 57

33.3 Certification (electromagnetic compatibility)

This product conforms to the following European Directives:

Directive 2002/95/EC on the Restriction of the Use of certain Hazardous Substances in Electrical and

Electronic Equipment (RoHS)

Directive 2002/96/EC on Waste Electrical and Electronic Equipment (WEEE)

EMC Directive 2004/108/EC

Warning: This equipment has been tested and found to comply with the limits for a Class A digital

device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection

against harmful interference when the equipment is operated in a commercial environment. This

equipment generates, uses, and can radiate radio frequency energy, and, if not installed and used in

accordance with the instruction manual, may cause harmful interference to radio communications.

Operation of this equipment in a residential area is likely to cause harmful interference in which case the

user will be required to correct the interference at his or her own expense.

The authority to operate this equipment is conditioned by the requirement that no modifications will be

made to the equipment unless the changes or modifications are expressly approved by Ascend

Communications, Inc.

This product contains a fully certified Bluetooth module (FCC ID : T9J-RN42).

The Prisma also complies with EN 12668-1:2010, Non-destructive testing and verification of ultrasonic

examination equipment Part 1: Instruments.

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