epoch lt training 2-06

8/10/2019 Epoch Lt Training 2-06

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EPOCH LT Training Presentation

Introduction and Basic Operation


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Panametrics-NDT Flaw Detector Line

EPOCH LT

EPOCH 4B

EPOCH 4PLUS

EPOCH 4


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Instrument Summary and Key Features

EPOCH 4PLUS Ultrasonic flexibility of the EPOCH 4 with the addition of a color liquid crystal display.Several unique software features include Dynamic Waveform Color Change, Backwall

Echo Attenuation, Spotweld Assistant, special RF detection, and high-speed USB

communication protocol.

EPOCH 4 High end flaw detector with a large array of specialized software options includingencoded B-Scan. Unprecedented inspection flexibility with dual pulsers and user

customizable filters open the door to many new applications that previous generation

flaw detectors cannot tackle.

EPOCH 4B Basic version of the EPOCH 4 Flaw Detector. Offers standard dual pulsers, optionalnarrow band filtering and a choice between LCD and ELD screen types. Similar option

package to EPOCH LT.

EPOCH LT Basic instrument with a standard negative spike pulser, broadband 20MHzreceiver, high performance LCD, high-speed USB communication port, and

standard DAC/TVG. The lightest and smallest instrument available. Options

include Adv. DAC/TVG, DGS/AVG, API 5UE, Low PRF, AWS D1.1/D1.5, Tunable

Square Wave Pulser.

Panametrics-NDT Flaw Detector Line


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Product Overview

The EPOCH LT was launched at theNDT World Conference in September2004.

The EPOCH LT is Olympus NDTs basicflaw detector platform providing

customers with class-leading size andweight as well as excellent ultrasonicperformance.

The EPOCH LT is designed to handlethe most common UT Flaw Detector

applications with standard basic DACand TVG as well as common softwareoptions. It is fully compatible with theEPOCH 4 series instruments as well.


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Key Features

Size and Weight Only 2.35 lbs. (1.0kg)

Only 1.35 in. (38mm) thick

Provides truly handheld performance

Large Bandwidth Broadband Receiver (20 MHz at -3dB) Allows use of high frequency transducers for

thinner materials

Large Memory Capacity (100 W / 2,000 T)

Option to expand this capacity to

(500 W / 5,000 T)

Auto-Calibration Feature

Greatly speeds and simplifies the calibration process


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Key Features

Nickel Metal Hydride (NiMH) Battery

High power to weight ratio

Internal pack design

Time of Flight Measurement Readout

For sec readout

USB Communication Port

Communication with GageView Pro Interface Program

Real-Time Clock Saved data is automatically tagged with date/time


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Key Features

Thickness Measurements are Taken from Raw Data

True time of flight instrument

Resolution NOT tied to screen range

5 Function Soft Keys Direct access to preset parameter values

Gasketed Case

Seals out the environment


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Expanded Memory Capacity

Echo to Echo Measurement

Extended Range

Standard range is 200in. (steel velocity)

Expand to 400in. (steel velocity)

Expanded Memory

Capacity

Standard Memory

Capacity

Thickness Readings 10,000 2,000

Waveforms 500 100

Basic Options


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EPOCH Design Philosophy

EPOCH Flaw Detectors have been designed with the operator in mind. Theuser interface has been designed to provide Direct Access to settings.

Examples of Direct Access Philosophy

Split Screen ViewAllows the operator to view all instrument settings on onescreen.

KeypadFunctionally grouped keypad allows access to all major instrumentfunctions with one or two key presses.

Function (F) KeysUser can jump directly to various instrument settings rather thanmanual adjustment. Fully customizable values with standard Editable Parametersfeature.

Single Hand OperationAll instrument functions accessible with ENTER key andadjustable with slewing keys.


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Physical Features

Liquid Crystal Display

High Speed USB Port

AC Adaptor Input LEMO 00 Transducer

Connectors

LM-BF adaptors are

available for BNC Cables

Direct Access Function Keys

Keypad (English or

International Symbol)

EPOCH LT shown with

English Keypad and option

rubber boot.

LEMO 00 transducer

connectors are the only type

available due to connector

size restrictions.


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Display

Liquid Crystal Display (LCD) 1/4 VGA (320 W x 240 H Pixels)

Superior Outdoor Visibility

Contrast Adjustment via Keypad

Backlight Adjustment via Keypad


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Keypad (English Version)


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Outputs

USB Communication Port

AC Adaptor Input

LEMO Transducer Posts


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Battery Charging

OPTION #1 - Charge Battery Inside Unit Plug charger into unit and AC Main Line.

Full charge will be achieved in approximately 2-3 hours. Battery will also charge

when unit is powered on, although at a slower rate.

OPTION #2 - Charge Battery Externally.

Optional External Battery Charger

Panametrics Part Number: EPLT-EC

Full charge will be achieved in approximately 2-3 hours


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Option Security Key

Security Key allows installation of instrument software options

Options can be programmed remotely - just contact Waltham

All EPOCH LT Instruments have their security key soldered onto the main

board. The keys cannot be removed as in older EPOCH 4 series instruments.


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EPOCH LTOPERATION


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The [ON/OFF] key is used to

turn the EPOCH LT on and off.

ON

OFF

EPOCH LT will go through a Self Teston Power up. This assures that the

instrument is functioning properly.

Power Up


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Liquid Crystal Display (LCD)Backlight On/Off

Contrast Adjustment

Press: then to adjust the contrast.2NDFCONTRAST

CALIBRATION

Contrast Adjustment


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Directory

Filename

Gain/Range

Parameter Box

Flaw Information

(Always displayed)

Split Screen View

A-Scan and Setup Parameters can be Viewed Simultaneously

Setup

Parameters

To Toggle Between Screen Views.

Battery Level Indicator

(Always displayed)Function Key Presets

Split Screen

A-Scan withflags

PRESS: DISPLAY

PRINT


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Full Screen View Provides a Large View of the A-Scan for Increased Resolution

Directory

Filename

Gain/Range

Parameter Box

Flaw Information

(Always displayed) Split ScreenA-Scan withflags


(Always displayed)

Function Key Presets


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100%~ 8 Hours Backlight Off

~ 6 Hours Backlight On


50%~ 4 Hours Backlight Off

~ 3 Hours Backlight On


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This menu is used to:- Access Software Features / Options (DAC, TVG, etc.)

- Adjust Operating Parameters (Language, Units, PRF, etc.)

Press: to access menu.

Use the Slewing keys

to move highlight bar.

Option Menu

Press: to access a function.

Press: again to exit menu.


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Setup Menu

Audible Tone Upon Keypress

Turns A-Scan Grid ON/OFF

Keypad and Calibration Lock

Filled Frozen A-Scan when

Filled Live A-Scan Waveform


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Real Time Clock


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Advanced User Selection

The User Interface can be customized for Advanced Users

Preset or Customizable Narrow Band Filters

Zero Offset Preset Values

Measure horizontal distance values from the front of an angle beam wedge rather than the BeamIndex Point

Save MIN THICKNESS instead of CURRENT THICKNESS when the SAVE THICK key is

pressed.


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EPOCH LT

Bas ic Operat ing Parameters


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Basic Operation

Access each parameter through a direct or

2nd function key press.

Press to toggle parameters.

Adjust each parameter using:

The Function Keys for preset values

the Slewing Keys for fine tuning

F1 F2 F3 F4 F5


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Press: or to fine tune the value.

Press: , , , , or to select a preset value.

Function Key Presets For quick access to preset values for each parameter

Function Keys

Press:

Preset Values

ANGLE

THICKNESS

F1 F2 F3 F4 F5

Press: then in the Full Screen view to view the horizontal

graticule division numbers instead of the function key parameter presets.

2NDF ZERO

OFFSET

# DIV

Example:


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Basic Operating Parameters

GAINGAINREF

FREEZE

2NDFGAIN

REF

REFERENCE GAIN

FREEZE/UNFREEZE SCREEN

SAVE THICKNESS / AMPLITUDE / TOF DATA ONLY

SAVE ENTIRE WAVEFORM AND SETUP PARAMETERS


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GATE 1 POSITION

2NDF

CONTRAST

CALIBRATION

GATE

1

ALARM 1

GATE

2

ALARM 2

GATE 1 ALARM

GATE 2 POSITION

GATE 2 ALARM

GATE

1

ALARM 1

2NDF GATE

2

ALARM 2

AUTO-CALIBRATION INITIATION

CONTRAST / BRIGHTNESS CONTROL2NDF

CONTRAST

CALIBRATION



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ZERO OFFSET

2NDF ZEROOFFSET

# DIV

RANGE

ZOOM

VEL

REJECT

CHANGES X-AXIS IN FULL SCREEN TO

DISPLAY GRATULE MARKINGS (0-10)

SCREEN RANGE

ZOOM / UNZOOMS SCREEN2NDF

VELOCITY

REJECT2NDF

ZERO

OFFSET

# DIV

RANGE

ZOOM

VEL

REJECT



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REFRACTED ANGLE

OPTION

B-SCAN

2NDF ANGLE

THICKNESS

MATERIAL THICKNESS

OPENS EPOCH 4 OPTION MENU

INITIALIZES THE B-SCAN OPTION2NDF

ACCESSES THE PULSER FUNCTIONS

ACCESSES THE PEAK MEM FEATURE2NDF

ANGLE

THICKNESS

OPTION

B-SCAN



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TOGGLES BETWEEN SPLIT / FULL SCREEN VIEW

2NDF

PRINT

DISPLAY

DEPTH

%AMP

ECHO-ECHO

NOT ACTIVE IN EPOCH LT

SELECTION FOR: -EDGE / PEAK DEPTH- AMPLITUDE

- TOGGLE SOUNDPATH READINGS IN

ANGLE BEAM MODE

TURNS ON / OFF ECHO-ECHO FEATURE2NDF

PRINT

DISPLAY

DEPTH

%AMP

ECHO-ECHO



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EPOCH LT

Auto-Cal ibrat ion

Straigh t Beam Example


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Transducer 5 Step Steel Test Block

A109S-RM 2214E

(5.0 MHz, 0.5 in) (0.100 to 0.500)

EXAMPLE:


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CalibrationInitial Steps

GAIN 10 dB

ZERO OFFSET 0.000 us

VELOCITY 2320 in /us (L-Wave Steel)

RANGE 1in Full Screen

ADJUST THE FOLLOWING PARAMETERS:GAIN

REF

ZERO

OFFSET

# DIV

RANGE

ZOOM

VEL

REJECT


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Rectification:Fullw ave, RF, Halfwave +, Halfwave -

Pulser Energy:Low (100V), Med (200V), Hig h (300V), Max (400V)

Pulser Damping:50, 63, 150, 400 ohms

Pulser Mode:Pulse Echo, Dual, Through-Transmissio n

ADJUST PULSER SETTINGS

Multiple presses of the key toggles through pulser parameters.

Pressing then will go directly to the filter selections2ND F



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Pulser Type Selection

The EPOCH LT has a standard negative spike excitation pulser and an

OPTIONALtunable square wave pulser.

Negative Spike Excitation Pulser:

Easy to use

No additional parameters needed for adjustment

Tunable Square Wave Pulser

Pulser is tuned to a frequency corresponding to the transducer

Provides better signal to noise ratio for most applications

Note: If Square Wave Pulser is selected, user must enter a frequency.



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Resolution of Measurements

Thickness and Time-of-Flight (msec) measurements are taken from theinstruments raw data.

Measurement resolution is NOT tied to screen range.

DEMONSTRATION!


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STEP #1:

Couple the transducer to the THIN

reference sample.(0.200 step)

Position Gate 1 over the FIRST

backwall echo.

Adjust the Gain so the signal

amplitude is ~ 80%

Straight Beam Calibration


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Press:

Wait for a steady reading, then press

Uncouple the transducer.

Enter the known thickness of the THIN reference sample.

CONTRAST

CALIBRATION

ZERO

OFFSET

# DIV



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STEP #2:

Press

Couple the transducer to the THICK

reference sample.(0.500 step)

Position Gate 1 over the backwall echo.

CONTRAST

CALIBRATION



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Wait for a steady reading, then press

Uncouple the transducer.

Enter the known thickness of the THICK reference sample.

Press to complete the calibration.

VEL

REJECT



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EPOCH LTAuto-Cal ibrat ion

Ang le Beam Example


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Transducer 45oWedge IIW Type I Test Block

A430S-SB ABWS-6-45 1018 Steel TB7541-1(2.25 MHz, 0.625 in)

EXAMPLE:


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Locating the Beam Index Point (B.I.P.)

1. Align the wedge with the zero mark on the

IIW Type I Block.

2. Move the probe forward and backward untilthe echo amplitude from the 4 arc is peaked(The Peak Memory feature is helpful).

3. Once the signal is peaked, mark the side ofthe wedge directly over the zero mark. This isthe Beam Index Point.


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NOTE: The refracted angle of the wedge should have already been entered intothe EPOCH LT at the beginning of the calibration. However, this angle must be

verified due to material variations or wear on the wedge.

Verify the Refracted Angle (Beta)

1. Position the probe over the appropriate angle mark on the IIW block (matched

to the angle on the wedge).

2. Move the probe forward and backward to peak up the echo from the large

circular hole in the block. (Again, the Peak Memory feature simplifies this

process.)


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3. Once the signal is peaked, hold the probe stationary. Note the degree mark on the

block that lines up with the Beam Index Point (B.I.P. was found in the previous step).

This is the actual refracted angle (Beta) for the particular transducer and probe.

4. If the Beta value differs from the one initially entered, enter a new one by

pressing and then fine tuning the value using the or keys.ANGLE

Verify the Refracted Angle (Beta)


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Calibrate for Distance

1. Couple the probe to the IIW Type 1 Reference block so that the B.I.P. is directly

over the 0 mark.2. Set the initial Range to 10 inches.

3. Adjust the [ZERO OFFSET] so that both the 4 and 9echoes are visible on the

screen. The [GAIN] may have to be increased to view the 9 echo.

NOTE: An IIW Type 2 Reference Block will produce echoes at the 2

and 4 screen divisions.


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Position Gate 1 over the 4 echo.

Press .

Wait for a steady reading, then press .

Use the keypad to enter a thickness of 4.000 inches.

CONTRAST

CALIBRATION

ZERO

OFFSET



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Position Gate 1 over the 9 echo.

Press

Wait for a steady reading, then

press .

Use the keypad to enter a thickness

of 9.000 inches.

Press to complete the calibration.

VEL

REJECT

CONTRAST

CALIBRATION



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1. Couple the probe to the IIW Type 1 Reference Block so that the transducer is

aimed at the 0.060 side drilled hole.

2. Move the probe forward and backward to peak up the echo (The Peak

Memory feature aids in this process)

3. Use the [GAIN] key to bring the gain to a desired level.

4. Lock in a reference gain and enable scanning gain by

pressing then .

Calibrate for Sensitivity

0.060 sidedrilled hole

GAIN

REF

2NDF


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Toggle Feature

When utilizing angle beam transducers during inspections, the user can select whichsound path reading is displayed in large text.

Press: then

DEMONSTRATION!

DEPTH

%AMP

ECHO-ECHO

F4


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EPOCH LT

DATALOGGER


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Datalogger Specifications

Storage of 100 Waveforms/2,000 Thickness Readings

Option to increase to 500 Waveforms/10,000 Thickness Readings

Press 2ndF to enter/exit the memory screen.

File Content Window

File Directory Window

Datalogger Capacity Remaining


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Software Options

DISTANCE AMPLITUDE CORRECTION (DAC) NOW STANDARD TIME VARIED GAIN (TVG) NOW STANDARD

ADVANCED DAC/TVG

ONBOARD DGS/AVG

API 5UE

SPOTWELD

INTERFACE GATE

FLOATING GATE

CURVED SURFACE CORRECTION (CSC)

PULSE REPETITION FREQUENCY (PRF)

Low PRF (30 Hz)

High PRF (1 KHz)

B-SCAN

WAVE ANALYSIS

AWS D1.1

EXPANDED MEMORY

GAGEV IEW PRO PC INTERFACE PROGRAM

*Refer to separate presentation

for details on operationof software options

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