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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
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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
Battery Level Indicator
(Always displayed)
Function Key Presets
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100%~ 8 Hours Backlight Off
~ 6 Hours Backlight On
Battery Level Indicator
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
Basic Operating Parameters
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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
Basic Operating Parameters
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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
Basic Operating Parameters
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TOGGLES BETWEEN SPLIT / FULL SCREEN VIEW
2NDF
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
DISPLAY
DEPTH
%AMP
ECHO-ECHO
Basic Operating Parameters
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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
CalibrationInitial Steps
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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.
CalibrationInitial Steps
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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
Straight Beam Calibration
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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
Straight Beam 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
Straight Beam Calibration
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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
Calibrate for Distance
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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
Calibrate for Distance
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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