EPOCH XT B-Scan Option Presentation

7/27/2019 EPOCH XT B-Scan Option Presentation

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EPOCH XT B-Scan Software Option Available on EPOCH XT instruments beginning in April 2008.

Instrument software revision 1.1.1.1 or later

EPOCH XT must be equipped with the Hardware I/O Port (optional)in order to allow encoded scans.


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EPOCH XT B-Scan Key Features Scan Rate has been increased to up to 1000 measurements / second.

With Floating Gate active the maximum scan rate is 500 meas. / sec. With A-Scan Storage active the maximum scan rate is 60 meas. / sec.

The limit on the EPOCH 4 B-Scan is 180 meas. / sec.

Three B-Scan Modes: Bi-Directional encoded, Uni-Directional encoded,and Manual non-encoded.

Display Modes B-Scan only (split or full screen) A-Scan only (split or full screen) B-Scan and A-Scan simultaneously

Store up to 150,000 points per B-scan and up to 100 scans at maximumsize.

Store A-Scans during B-Scan collection based on: Alarm

Minimum Depth

Store All

Limits scan rate to 60 measurements / second


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EPOCH XT B-Scan Key Features B-Scan is compatible with Echo-to-Echo for coated surfaces or

when there is a varying water path.

Gate 1 width must be set wide enough to completely cover Gate 2 to avoid lossof signal.

Full compatibility with GageView Pro 3.5

See the GageView Pro 3.5 presentation for the EPOCH XT. This is located in

the HELP menu in GageView Pro.

New color palettes for B-Scan

Scan can change from Green to Red on alarm

Grayscale gradient and Color gradient available


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EPOCH XT B-Scan InstrumentConfiguration and Parts


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Hardware I/O Explanation EPOCH XTs must be equipped with the Hardware I/O Port to accept

the encoder cable used for B-Scans.

If you are not sure if your EPOCH XT has this port, look at the topof the instrument and compare to the pictures below.

Installation of this port requires that the EPOCH XT be returned toan Olympus NDT Service Center.

OK NOT OK


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Parts Required for B-Scan EPOCH XT with Hardware I/O Port

EPOCH XT B-Scan Software Option PN: EPXT-BSCAN

EPOCH XT Encoder Cable PN: EPXT-ENC-CBL-XX Choose length (10, 25, 50, or 100 feet).

Encoder Car PN: EP4/ENC

Transducer Typically a D790-SM

Transducer Cable BNC: BCMD-316-XXB (Choose length to match encoder cable)

LEMO: L1CMD-316-XXB (Choose length to match encoder cable)


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B-Scan Kits B-Scan Kits Most customers choose to purchase B-Scan kits

that contain the Instrument Software Option, B-Scan EncoderCar, and B-Scan Encoder Cable.

EPXT-BSCAN-KIT-10: (10 foot encoder cable)




The transducer and transducer cable must be purchasedseparately.

GageView Pro must be purchased separately.


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B-Scan Encoder & Accessories

D790-SMTransducer Cable

Extension Pole BracketOption: EP4/EPB

Magnetic Wheels Option:EP4/MW (1 Pair)

Encoder CableInput

Probe Holder:EP4/PH

Water Input


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B-Scan Option Installation The EPOCH XT must be updated to Operating Software version

1.1.1.1 or higher.

If the B-Scan Option is NOT activated in your instrument, go tothe INSTR SETUP Menu STATUS Tab as shown below.

Provide Olympus NDT with the last 4 characters of yourinstruments serial number.

Olympus NDT will provide an Option Key number to activate the

software option.


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EPOCH XT B-Scan Setup & Activation


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B-Scan Option Initial Setup The EPOCH XT must be properly setup and calibrated before the

B-Scan option is turned ON.

Pulser / Receiver Settings

Calibrate for Zero Offset and Velocity

Gate 1 should be setup to cover the minimum and maximum expectedthickness values for the inspection.

The screenshots below show a complete setup ready for B-Scan

to be turned on.


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B-Scan Option Initial Setup A Minimum Depth Alarm may be used to alert the operator to

areas where the part thickness has dropped below a userdefined threshold.

The Floating Gate option may be used to set the height of theEPOCH XTs gates. This option allows the gates to be set at alevel from -1dB to -14dB (1 dB increment) from the height of thegated echo.

Avoid echo drop out when scanning on heavily corroded parts.

Maximize measurement consistency by measuring at the same point onthe edge of the echo envelope.


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B-Scan Option Activation The B-Scan Option is activated in the MEAS SETUP Menu

OPTIONS Tab B-SCAN Sub Tab.

There are 3 Encoder Modes available: Manual The encoder is not active. B-Scan updates according to a time rate

that is set with the PRF control.

Uni-Directional Encoder is active. Scan moves forward when encodermoves forward or backward.

Bi-Directional Encoder is active. Scan moves in the same direction asencoder.


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EPOCH XT B-Scan Bi-Directional Example


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Bi-Directional B-Scan Example Turn the B-Scan Feature ON

Choose Encoder Mode = Bi-Directional

Encoder Pulses: This is an encoder

specification. The Remote Scanencoder that Olympus NDT sells outputs50 pulses / inch.

Take Reading Every: This is theresolution of the B-Scan

Start Coordinate: Set to zero or todesired value.

Save Ascan Modes: No Storage: No A-Scans saved during scan

Store on MinDepth: Store A-scans thatcorrespond to the minimum thickness in thescan.

Store on Alarm: Store A-scans when theinstrument alarm is triggered.

Store All: Store all A-Scans during the B-Scan.

Press MEAS to return to Live Screen.

NOTE: Saving A-Scans during a B-Scancurrently limits the scan rate to 60Hz.


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Bi-Directional B-Scan Example B-Scan View

SR = Scan Rate

Min Depth Alarm

Bb = B-ScanBi-Directional

Start New Scan (Old Scan

is erased)

Change to dual A & BScan View

DT = Distance Travelled

Thickness Limits defined

by Gate 1 Start and Width

Start = Start Scan

Change to A-Scan View


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Bi-Directional B-Scan Example A-Scan View

SR = Scan Rate



is erased)

Change to dual A & BScan View


Minimum Depth Alarm

Stop = Stop Scan

Change to B-Scan View


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Bi-Directional B-Scan Example A & B-Scan View

SR = Scan Rate

(only active in encoded

scans)


Min Depth Alarm


is erased)




scans)

Min Depth Alarm

Thickness Limits

defined by Gate 1 Start

and Width

Stop = Stop Scan


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Bi-Directional B-Scan Example Review

Min Depth Alarm Triggered

To review the stored B-Scan you must first stop the scan using the F1 key.

As the Review Cursor is moved along the B-Scan the EPOCH XT will displaythe Distance Travelled (DT) for the point as well as any saved A-Scans.

Review Cursor Move

Left and Right with

arrow keys to review

B-Scan thickness data.

This view shows the A-

Scan that has been

stored at this point in

the B-Scan.


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EPOCH XT B-Scan Manual Example


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Manual B-Scan Example Turn the B-Scan Feature ON

Choose Encoder Mode = Manual

Direction: The EPOCH XT will allow

the Manual Scan to run from Left toRight or from Right to Left.

Stop on Loss Of Signal (LOS): Thiswill cause the scan to stop if there isno signal in the gate. When a signal

reappears the instrument inserts ablank line in the scan.

Save Ascan Modes: No Storage: No A-Scans saved during scan

Store on MinDepth: Store A-scans thatcorrespond to the minimum thickness in thescan.

Store on Alarm: Store A-scans when theinstrument alarm is triggered.

Store All: Store all A-Scans during the B-

Scan. Press MEAS to return to Live Screen.

NOTE: Saving A-Scans during a B-Scancurrently limits the scan rate to 60Hz.


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Manual B-Scan Example B-Scan ViewSR = Scan Rate


scans)

Min Depth Alarm

Bm = B-Scan Manual


is erased)

Change to dual A & B

Scan View



scans)

Thickness Limits defined

by Gate 1 Start and Width

Start = Start Scan

Change to A-Scan View


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Manual B-Scan Example A-Scan ViewSR = Scan Rate


scans)

Bm = B-Scan Manual


is erased)

Change to dual A & B

Scan View



scans)

Minimum Depth Alarm

Start = Start Scan



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Manual B-Scan Example A & B-Scan ViewSR = Scan Rate


scans)

Bm = B-Scan Manual

Min Depth Alarm


is erased)

Change B Scan View



scans)

Thickness Limits

defined by Gate 1 Start

and Width

Start = Start Scan


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Manual B-Scan Example A & B-Scan View

Min Depth Alarm TriggeredLoss of Signal

When running a Manual B-Scan the scan rate is controlled with the PRFcontrol.

Distance Traveled (DT) and Scan Rate (SR) are not active in Manual Scan

mode. You may choose different measurements in Manual MeasurementSelection mode.

Review Cursor Move

Left and Right with

arrow keys to review

B-Scan thickness data.


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EPOCH XT B-Scan Data Logging


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EPOCH XT B-Scan Saving Files B-Scan files may be stored in any file type in the EPOCH XT. The most

common are: CAL Files: Used to store B-Scan setups

INCREMENTAL Files: Used for most inspection data storage

When the SAVE key is pressed the operator has two choices: SAVE SCREEN: This saves a screen

shot of the B-Scan along with the

instrument setup. This can be recalled

as a setup if desired.

SAVE FULL: This saves the entire

B-Scan along with stored A-Scans andthe instrument setup. This can be

recalled as a setup if desired.


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EPOCH XT B-Scan File Review When a Full B-Scan has been saved the instrument will display a

compressed B-Scan view in the Review Screen. To view the data in itsuncompressed format you must do one of the following: Transfer the file to GageView Pro

Recall the file and review using the review cursor.

When a B-Scan screenshot has been saved the instrument will display

an uncompressed view of the B-Scan in the Review Screen.

EPOCH XT B-Scan Option Presentation

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