EPOCH LT焊縫探傷儀/EPOCH LT鍛件探傷儀/EPOCH LT鑄件探傷儀/北京泰如EPOCH LT供貨平臺
EPOCH LT焊縫探傷儀/EPOCH LT鍛件探傷儀/EPOCH LT鑄件探傷儀/北京泰如EPOCH LT供貨平臺
EPOCH LT焊縫探傷儀/EPOCH LT鍛件探傷儀/EPOCH LT鑄件探傷儀/北京泰如EPOCH LT供貨平臺
北京泰如電子科技有限公司
電話：010-57464568
手機：
QQ：3081402071

EPOCH LT
EPOCH LT是一款手持式初級數(shù)字式探傷儀，厚度僅為38毫米（1.5英寸），重量僅為1公斤（2.35磅），機身結(jié)構(gòu)橫窄豎寬，具有最小60 Hz的快速顯示更新率、自動探頭校準(zhǔn)、數(shù)字式數(shù)據(jù)記錄器等特點，以及許多其他測量功能。
EPOCH LT探傷儀是一款厚度僅有38毫米、重量僅為1公斤的手持式數(shù)字探傷儀。EPOCH LT探傷儀具有最低60 Hz的快速顯示刷新率。該儀器包含自動探頭校準(zhǔn)功能、數(shù)字?jǐn)?shù)據(jù)記錄器，以及多種其它測量功能。如果要在惡劣的現(xiàn)場條件或苛刻的生產(chǎn)環(huán)境中進行快速、基本的缺陷檢測，EPOCH LT將為您提供完美的解決方案。
北京泰如電子科技有限公司
電話：010-57464568
手機：
QQ：3081402071
特色
輕便的、符合人體工程學(xué)要求的設(shè)計（1.0公斤）
大屏幕、高亮度、超清晰、全屏或分屏液晶顯示（LCD）
自動探頭校準(zhǔn)功能
顯示凍結(jié)功能，可保持波形和聲程數(shù)據(jù)
聲程數(shù)據(jù)以英寸、毫米或微秒為單位顯示
峰值記憶功能
射頻顯示模式
報警模式：正閾值、負閾值、最小深度
標(biāo)準(zhǔn)DAC和TVG
手持式探傷儀
結(jié)實且輕便 
EPOCH LT體積雖小，但卻有著許多通常只有更大的探傷儀才具有的功能。EPOCH LT探傷儀除了具有快速 
60 Hz刷新速率，還具備以下功能：可保持波形數(shù)據(jù)的顯示凍結(jié)模式，同時顯示A掃描動態(tài)波形及其峰值包絡(luò)的波峰記憶功能，射頻顯示模式，可選的正閾值、負閾值 或最小深度報警模式，以及校準(zhǔn)探頭零位偏移和材料聲速的自動探頭校準(zhǔn)功能。 
機載的數(shù)字?jǐn)?shù)據(jù)記錄器操作簡便，可存儲多達100個校準(zhǔn)設(shè)置/2000個厚度測量值?？蛇x的增容內(nèi)存功能可存儲500個校準(zhǔn)設(shè)置/10000個厚度測量值。EPOCH LT數(shù)據(jù)記錄器兼容EPOCH 4系列中其它所有儀器的文件以及GageView Pro接口程序。 

強大的文件處理和傳輸能力 
可選購的基于Windows 的GageView Pro接口程序，為EPOCH LT添加了實用的數(shù)據(jù)收集、編輯和讀出能力。GageView Pro是一個收集、管理和格式化所存儲的檢測數(shù)據(jù)的強大的工具。 
GageView Pro數(shù)據(jù)庫跟蹤功能可利用預(yù)先加載的校準(zhǔn)設(shè)置、標(biāo)識碼和注釋，設(shè)置檢測方案。數(shù)據(jù)可被打印輸出或被方便地拷貝粘貼到文檔處理文件和電子表格中，以備進一步制作報告之用。
EPOCH LT技術(shù)規(guī)格
液晶顯示：320像素（寬）x 240像素（高）。
顯示刷新率：最低60 Hz。
靈敏度：最高達100 dB，參考水平靈敏度的可選分辨率為6 dB或0.1 dB。
自動探頭校準(zhǔn)：探頭零位偏移和/或材料聲速的自動校準(zhǔn)。
抑制：整個標(biāo)度的0%～80%，增量為1%。
單位：毫米、英寸、微秒。
材料聲速：635 m/s～15240 m/s 。
范圍：
4 mm～5000 mm 
1 mm～10000 mm，可選。
折射角度：固定設(shè)置為0°、30°、45°、60°、70°，或從10°～85°可變，調(diào)節(jié)增量為0.1°。
峰值記憶：同時顯示以60 Hz刷新率更新的動態(tài)A掃描以及A掃描的峰值包絡(luò)。
脈沖發(fā)生器類型：負尖波激勵脈沖，以及可選的可調(diào)方波。
脈沖能量：低（100 V）、中（200 V）、高（300 V）、最大（400 V）。
阻尼：50 Ω、63 Ω、150 Ω、400 Ω。
檢波：全波、正半波、負半波、未經(jīng)檢波的射頻波。
模擬帶寬：0.3 MHz～20 MHz，-3 dB處。
檢測模式：脈沖回波、雙晶或穿透。
報警：可選正閾值、負閾值或最小深度模式。
工作溫度：-10 °C～50 °C
存儲溫度：-40 °C～70 °C
電源要求：
AC主電源：100 VAC～120 VAC、 
200 VAC～240 VAC，50 Hz～60 Hz。
電池：內(nèi)置可充電鎳氫電池組，額定6 V，3200 mAh。
電池工作時間：額定5～6小時。充電時間一般為2小時。
探頭線纜接口：LEMO 00接口。備有用于LEMO 1和BNC接口的適配器。
鍵盤：英語或國際符號。
語言：可利用鍵盤選擇語言：英語、法語、德語、西班牙語、意大利語、俄語、日語及用戶定義的語言。
USB高速通信端口
外型尺寸：
238 mm x 138 mm x 38 mm
重量：1.0公斤，帶電池。
PC機要求：與Microsoft Windows XP和Microsoft Windows 2000兼容。
保修：一年保修，不包括電池?？蛇x第二年延長保修。
數(shù)字?jǐn)?shù)據(jù)記錄器
可存儲多達100個校準(zhǔn)設(shè)置以及2000個厚度測量值。
可選增容的內(nèi)存可存儲多達500個校準(zhǔn)設(shè)置以及10000個厚度測量值。
標(biāo)準(zhǔn)配置 
帶有數(shù)字?jǐn)?shù)據(jù)記錄器、基于微處理器的EPOCH LT超聲探傷儀包含以下附件：
EP-MCA：袖珍充電器適配器
EPLT/BAT：鎳氫充電電池
EPLT/CAL-NIST：NIST校準(zhǔn)證書
910-258：說明手冊
36DLP-CC：儲運箱
DAC/TVG軟件
選購附件
EP4/SC：硬殼運輸箱
PLUS/RPC：橡膠防護便攜箱
EPLT/DP：顯示器保護膜（LCD）
GageView Pro接口程序： 
帶有USB線纜。（產(chǎn)品編號：GAGEVIEWPRO-KIT-USB）
軟件選項
EPOCH LT的幾個針對不同應(yīng)用的軟件選項增強了它的靈活適用性。用戶在購買了儀器后，若選購了這些軟件選項，可遠程激活這些選項。因此無需為激活軟件選項而將儀器返回到原生產(chǎn)廠！ 
高級DAC/TVG
API 5UE
方波脈沖發(fā)生器
AWS D1.1和D1.5
機載DGS/AVG
增容的內(nèi)存
低脈沖重復(fù)頻率
回波到回波厚度測量
擴展的范圍
GageView Pro接口程序
 
Remote Activation 
EPOCH series advanced software options remotely activated at any time after acquiring the instrument. There is no need to send the instrument back for updates. 

Availability On Instrument 
The availability for each option on the various EPOCH series instruments is defined using the following key:
Available/Optional Available/Optional
Not available Not available
Standard Standard
 
EPOCH Series
Software Modules
XT
4+
4
4B
LT
API 5UE
Available/Optional
Available/Optional
Available/Optional
Available/Optional
Available/Optional
AWS

Available/Optional

Available/Optional
Available/Optional
ADT

Available/Optional

Available/Optional
Available/Optional
Onboard DGS/AVG

Available/Optional

Available/Optional
Available/Optional
Spotweld Assistant

Available/Optional

Not available
Not available
Interface Gate

Available/Optional

Not available
Not available
High Pulse Repetition Frequency

Available/Optional

Not available
Not available
Low Pulse Repetition Frequency

Available/Optional

Available/Optional
Available/Optional
Floating Gate
Available/Optional
Available/Optional

Not available
Not available
Curved Surface Correction

Available/Optional

Not available
Available/Optional
Spotweld Overlay

Available/Optional

Not available
Not available
Autofreeze

Available/Optional

Not available
Not available
Backwall Attenuator

Available/Optional

Not available
Not available
Wave Analysis

Available/Optional

Not available
Not available
Echo to Echo

Available/Optional

Standard
Standard
Narrowband Filters

Available/Optional

Standard
Not available
Square Wave Pulser

Available/Optional

Available/Optional
Standard
Extended Range

Available/Optional

Standard
Standard
Expanded Memory

Available/Optional

Standard
Standard
? API 5UE
Available/Optional
Available/Optional
Available/Optional
Available/Optional
Available/Optional
EPOCH XT
EPOCH 4+
EPOCH 4
EPOCH 4B
EPOCH LT
API 5UE - The API 5UE software option for the EPOCH series is intended to assist with performing inspections in accordance with the American Petroleum Institute's Recommended Practice 5UE. This practice was developed specifically for OCTG manufacturers to inspect and characterize inner-diameter (ID) cracking in newly fabricated pipe. The API 5UE code uses two crack sizing methods to characterize ID cracking: the Amplitude Comparison Technique (ACT) and the Amplitude-Distance Differential Technique (ADDT). The software aids in performing the ADDT method, which is based on the formula:
d i =Amax(T 2 -T 1 )k
API 5UE inspections are accomplished using the Peak Memory function on the EPOCH 4 flaw detectors to draw a peak envelope of the crack signal and quickly capture the Amax, T1 and T2 points using a single key press. Using this collected data from the peak envelope, the EPOCH flaw detector performs the necessary calculation using the formula above and displays the crack height in the upper right corner of the screen.

The ADDT inspection method can also be performed using the API 5UE software in a manual mode, allowing the operator to manually select the values for Amax, T1 and T2. All API 5UE data can be easily stored using the EPOCH 4 series datalogger, and the full inspection data can be downloaded to a PC using the EPOCH 4 series interface program, GageView Pro.
? AWS
Available/Optional
Available/Optional
Available/Optional
Available/Optional
Available/Optional
EPOCH XT
EPOCH 4+
EPOCH 4
EPOCH 4B
EPOCH LT
AWS - The AWS D1.1/D1.5 software option for the EPOCH series is intended to assist with performing inspections covered under the American Welding Society D1.1 and D1.5 Structural Welding Code for steel. This code provides inspectors with a method to classify discontinuities found in welds using ultrasonic inspection. This code uses the following formula to develop an indication rating for a reflector found during an inspection:
A - B - C = D
A = Discontinuity Indication Level (dB) 
B = Reference Indication Level (dB) 
C = Attenuation Factor: 2 * (soundpath in inches - 1 inch) (dB) 
D = Indication Rating (dB)
An AWS D1.1 inspector must take the Indication Rating (D) that is calculated based on A, B, and C to an Ultrasonic Acceptance - Rejection Criteria table produced by the AWS in order to classify the severity of the discontinuity that has been located. 


AWS Indication Ratings are displayed in the upper right corner of the A-Scan display, as seen above. Once a proper angle calibration has been performed, the operator selects a reference indication and stores this indication gain level is as the "B" value using the AWS software option. All indications captured after this setup are assigned a "D" value automatically, eliminating the need for manual calculations. All data from AWS D1.1/D1.5 inspections can be saved and recalled at a later time using the EPOCH 4 series datalogger, including setup parameters, indication screen shots, and the values of A, B, C and D for each saved indication.
? ADT
Standard
Available/Optional
Available/Optional
Available/Optional
Available/Optional
EPOCH XT
EPOCH 4+
EPOCH 4
EPOCH 4B
EPOCH LT
ADT - The Advanced DAC/TVG (ADT) software option is intended to significantly enhance the functionality of the standard DAC/TVG options already available on the EPOCH series flaw detectors, allowing users to customize inspections to their unique application requirements. The ADT feature incorporates the high-quality capabilities that adhere to ASME, ASME-3 and JIS sizing codes of standard DAC/TVG options with direct control of gain, range and zero offset, as well as reference and transfer correction. In addition, the ADT option provides new features such as 20%-80% DAC curves, customizable DAC curves, and a user-defined TVG table to meet advanced and unique inspection needs. ADT also allows the user to toggle between DAC and TVG views in many of its functions, allowing the operator the freedom to utilize both techniques during a single inspection.
Advanced DAC Options ADT's enhanced Distance Amplitude Correction functionalities allow more user control over the information acquired and displayed while sizing flaws compared to known reflector amplitude returns. A DAC curve is used to plot amplitude variations of signals from reflectors of the same size, but at different distances from the surface. A single DAC curve is used to plot the peak amplitude of each reflector at different depths within a material to compare with peak amplitude returns from unknown flaws. In the ASME-3 criteria, three DAC curves are plotted: one at peak amplitude, one 6dB below this point (indicating a reflector 50% the size of the reference), and one 14dB below the peak amplitude point (indicating a reflector that is 20% the size of the reference). Advanced DAC takes this functionality many steps further. The operator now has the option to customize up to three DAC curves at user-defined levels between +6dB and -24dB from the primary DAC curve. Additionally, since DAC curve inspections are not valid in most applications when a reflector is below 20% of full screen height, the ADT software allows a new dynamic 20%-80% function, which automatically adjusts the gain of reference signals below 20% up to 80% during setup. This allows a great range for inspections while minimizing the necessary manual gain adjustment. Should gain adjustment be necessary, the Advanced DAC and TVG functions now have a reference correction feature that provides the operator with a digital amplitude measurement of reflectors that is directly compared to the DAC curve level, even with significant gain adjustment during the measurement.

Custom DAC Curves (+6dB, -10dB, -18dB)

20%-80% DAC Feature

ASME-3 DAC Curve

ASME-3 DAC Curve in TVG View
Additionally, any DAC curve or curves set up using the standard or advanced functions are now interchangeable with TVG tables with a single push of a button.
 
Advanced TVG Options In addition to providing all the options from Advanced DAC in a TVG display for seamless integration of the two sizing techniques, the ADT software now offers a customizable TVG Table option for direct access to TVG point adjustment. This new feature allows fine manual adjustment of any captured TVG points, both for gain and position, as well as manual entry of new TVG points. The TVG Table is also completely compatible with the 1kHz High PRF option on the EPOCH 4 and EPOCH 4 PLUS instruments, as well as the Interface Gate option on those instruments, allowing for specialized fast scanning and on-line inspections previously out of reach of the EPOCH 4 series instruments.

TVG Table with Individual Point Adjustment

Resulting TVG Inspection Reference Definition
? Onboard DGS/AVG
Available/Optional
Available/Optional
Available/Optional
Available/Optional
Available/Optional
EPOCH XT
EPOCH 4+
EPOCH 4
EPOCH 4B
EPOCH LT

Onboard DGS/AVG - The Onboard DGS/AVG option is a replacement for the old DGS/AVG option that has been available in the EPOCH 4 and 4 PLUS , which required a PC Interface Program for DGS/AVG setups. This new option allows complete DGS/AVG setups to be performed on the instrument.
The DGS/AVG method allows the operator to size defects based upon a calculated DGS/AVG curve for a given transducer, material, and reflector size, and has been designed to meet the requirements of EN 583-2:2001. This method requires that the operator only has one reference reflector in order to create a DGS curve for flaw sizing. This is much different than the DAC or TVG method which requires that the operator have representative defects at various depths within a part in order to create a curve for flaw sizing. 
To allow the operator to setup DGS/AVG curves on the instrument very quickly, Olympus has developed a transducer library that is stored in the instrument's memory. All of the required data for building DGS/AVG curves is stored in the instrument's memory for each transducer in the library. The onboard DGS/AVG option provides the operator with rapid setup times and easy flaw size evaluation. 

After activating the DGS/AVG software option and selecting the appropriate transducer from the probe library, the operator is walked through a series of instrument setups to display the DGS/AVG curve that correctly corresponds to the operator's particular inspection. These steps include defining a reference reflector, entering adjustment parameters for the critical flaw size of the inspection and entering parameters to compensate for material attenuation of the test piece and calibration block.
	Upon proper completion of the instrument setup, the operator simply captures the reference reflector, and the DGS/AVG option displays the correct DGS/AVG curve on screen, along with any warning curves defined in the DGS/AVG setup parameters. When capturing potential defects, the DGS/AVG software displays the defect size evaluation in the upper right corner of the A-Scan display, allowing immediate and easy assessment of flaws. The software also permits adjustment of gain levels, which automatically adjust the displayed DGS/AVG curves, for more accurate inspection of potential defects.

 

DGS/AVG Curve and Warning Curve Capturing a Defect

Gain Adjustment in DGS/AVG Mode
? Spotweld Assistant
Not available
Available/Optional
Not available
Not available
Not available
EPOCH XT
EPOCH 4+
EPOCH 4
EPOCH 4B
EPOCH LT
Spotweld Assistant (SWA) - The Spotweld Assistant software option is onlyavailable with the EPOCH 4 PLUS flaw detector, and is intended to provide automated weld quality analysis using a combination of the industry-proven Spotweld Overlay functionality with an advanced quality analysis algorithm. This software feature greatly enhances the EPOCH series' capability to inspect and characterize spotwelds with improved efficiency and accuracy.
Ultrasonic inspection of spotwelds involves the analysis of what is known as the "ring-down" of sound energy within the weld nugget. Unlike many direct-measurement techniques, spotweld inspection looks at the characteristics of the multiple echoes returned from sound ringing within the weld nugget to determine the quality of the weld. Echo spacing, sound attenuation, and intermediate echo detection are some of the indicators of weld quality analyzed by trained inspectors. Ultrasonic spotweld inspection is completely based on comparison between known "Good" and "Unweld" conditions with unknown welds, and requires a highly trained operator to perform a comprehensive inspection.

"Unweld" Reference Condition

"Good" Weld Reference Condition
The Spotweld Assistant is not intended to remove the necessity of a trained operator; instead, it is meant to enhance the ability of a trained operator to judge welds more efficiently. The operator begins by storing both a "Good" and "Unweld" reference condition into the EPOCH 4 PLUS to calibrate these control situations. The software then uses default comparative algorithms to rate unknown welds based on these stored conditions. If the trained operator disagrees with the software's recommended weld rating, the operator can override this rating manually.

SWA Automated Weld Rating
 



For more advanced users, the operator is able to manually adjust the comparative algorithmic parameters, such as Attenuation Analysis ,Intermediate Echo Detection and Echo Spacing characteristics to allow a more customized and a higher quality automated weld-quality rating system. 

The Spotweld Assistant option also has advanced features associated with the GageView Pro interface program. Using GageView Pro, the user can set up a full spotweld inspection plan. The operator can pre-define ID values for all welds to be inspected, all required SWA calibrations, and Memos reminding the operator to change transducers when calibrations change. The EPOCH 4PLUS is capable of storing all weld rating information, including calibrations, waveforms, weld rating suggestions, and any operator weld rating overrides for recall and reporting purposes.
 
GageView Pro Inspection Plan 


Exported SWA Excel File
? Interface Gate
Available/Optional
Available/Optional
Available/Optional
Not available
Not available
EPOCH XT
EPOCH 4+
EPOCH 4
EPOCH 4B
EPOCH LT
Interface Gate - The Interface Gate option is designed to graphically compensate for the change in a water path distance or other delay between the test material and transducer. When the option is activated, a third gate (Interface Gate) is visible on the EPOCH's display. You can position this Interface Gate in the area where you expect to detect the interface echo. The interface echo is a result of the sound energy reflection at the interface between the water path and the front surface of the test material. The Interface Gate maintains the interface echo on the left hand side of the EPOCH screen, regardless of the water path distance, thereby maintaining a precise "acoustic" zero from which the instrument makes digital measurements. The instrument's flaw gates (Gate 1 and 2) automatically track the location of the Interface Gate. The Interface Gate can be used in standard measurement mode or in Echo-to-Echo mode. 





The Interface Gate is mainly used in immersion applications where the water path distance between the front surface of the test material and transducer face is continuously changing. The application may involve an "on-line" type approach with the test material moving steadily past a stationary transducer, or vice versa. If the front surface of the test material is not uniform, that causes slight differences in the water path distance.
? High Pulse Repetition Frequency
Standard
Available/Optional
Available/Optional
Not available
Not available
EPOCH XT
EPOCH 4+
EPOCH 4
EPOCH 4B
EPOCH LT
High Pulse Repetition Frequency (PRF) - In many "on-line" immersion applications, the inspection pieces are passed by the transducer at a fast pace compared to normal, manual scanning. If proper care is not taken, this can result in an effect known as "interleaving". This occurs when a pulse is transmitted into the test material, but the transducer moves prior to the return signal, and it can result in the loss of important data. To compensate for this effect, the High PRF option is used to hold the rate at which a pulse is transmitted into the test material at a high value (1,000 Hz). This is commonly used in conjunction with the Interface Gate option for "on-line" immersion inspection of parts moving quickly by a fixed transducer.
? Low Pulse Repetition Frequency
Standard
Available/Optional
Available/Optional
Available/Optional
Available/Optional
EPOCH XT
EPOCH 4+
EPOCH 4
EPOCH 4B
EPOCH LT
Low Pulse Repetition Frequency (PRF) - The Low Pulse Repetition Frequency option is available on all of the EPOCH series instruments, and is designed to hold the pulse repetition frequency (PRF) of the instrument to a fixed setting of 30 Hz. This option is commonly used in inspections that deal with materials that have very long sound paths, and is intended to avoid a phenomenon known as "wrap-around noise". When inspecting a piece with a long sound path at normal "Auto" PRF, there is a point when the time the sound takes to make a full round-trip from pulse to receive is longer than the time between pulses. If a test setup produces multiple echoes, then the issue is the length of time required for the last multiple echo to arrive at the receiver. Normally, the instrument builds a waveform response by pairing a certain pulse with its return signal and analyzing the characteristics of the return signal. However, in this situation, the received signal does not correspond to its initial pulse (according to the instrument's timing algorithm). The overall affect is the potential for random noise and echoes on the A-Scan display. The Low PRF software feature slows the pulsing of the unit and allows for a certain pulse to be correctly paired with its return signal.
? Floating Gate
Not available
Available/Optional
Available/Optional
Not available
Not available
EPOCH XT
EPOCH 4+
EPOCH 4
EPOCH 4B
EPOCH LT
Floating Gate - The Floating Gate software allows the operator to track and make measurements from A-Scan echoes at either the -6dB or -12dB point. After activation and setup, the gate "floats" at either of these points and tracks changes in the amplitude of a captured signal. This feature is intended to take more consistent, precise readings, especially in Edge Detect mode, by always taking measurements from the same relative amplitude of an echo. The feature also helps to maintain constant measurements in scanning applications where quality of transducer coupling may vary. The Floating Gate software is included with the B-Scan software, and is commonly used in conjunction with Edge Detect mode and B-Scan to maintain the accurate acquisition of measurements from corroded pipe and other materials. Floating Gate can also be used with the Interface Gate to track amplitude changes in the interface echo.
? Curved Surface Correction
Standard
Available/Optional
Available/Optional
Not available
Available/Optional
EPOCH XT
EPOCH 4+
EPOCH 4
EPOCH 4B
EPOCH LT
Curved Surface Correction - The Curved Surface Correction software is intended to adjust digital measurements from a curved inspection surface during angle beam inspection, to compensate for curvature effects on sound path length. The algorithms built into the EPOCH instruments to calculate sound path (V-path) distance, surface (skip) distance, and depth of a reflector when performing angle beam inspection are written for flat surfaces, such as welded plates. The measurement calculations are different in curved surfaces, such as pipes and cylinders, due to the more complex geometry of the part. Therefore, a separate algorithm has been written, the Curved Surface Correction, that requires the operator to input the outer diameter of the test piece and then calculates the correct V-path, skip distance and depth of a reflector.All other calibration settings, including verification of refracted angle and part thickness, must be entered correctly for accurate measurements.
? Spotweld Overlay
Not available
Available/Optional
Available/Optional
Not available
Not available
EPOCH XT
EPOCH 4+
EPOCH 4
EPOCH 4B
EPOCH LT
Spotweld Overlay - The Spotweld Overlay software option provides stored templates for comparison of unknown spotweld conditions to known Good, Stick, Undersized, and other known weld conditions. Upon activation, the operator uses the five soft keys (F1-F5) on the EPOCH to store templates of known weld conditions. These templates can then be recalled to the screen over an unknown weld condition under interrogation (in live A-Scan or Freeze mode) for comparison purposes. Although this option was specifically designed for Spotweld inspection, its template and comparison capabilities can be used in a variety of applications.
? Autofreeze
Not available
Available/Optional
Available/Optional
Not available
Not available
EPOCH XT
EPOCH 4+
EPOCH 4
EPOCH 4B
EPOCH LT
Autofreeze - The Autofreeze software option allows the operator to automatically freeze the live A-Scan when a gate alarm is triggered. This function is typically used in scanning applications or applications with signals that are difficult to obtain and/or maintain because of coupling or orientation issues. The operator activates a gate alarm and sets the gate parameters to capture only echoes of interest, and any echo that breaks the gate and triggers the alarm automatically activates the screen freeze function. This allows the operator to thoroughly inspection signals that may be difficult to catch or maintain in a live screen.
? Backwall Attenuator
Not available
Available/Optional
Not available
Not available
Not available
EPOCH XT
EPOCH 4+
EPOCH 4
EPOCH 4B
EPOCH LT
Backwall Attenuator - The Backwall Echo Attenuator software option is only available in the EPOCH 4 PLUS, and is designed to independently adjust the gain in a screen range region defined by the Gate 2 start point and beyond. The Backwall Echo Attenuator option is commonly used with two specific forms of inspections, both dealing with very small defects. The first is an inspection where potential defects may not be oriented parallel to the direction of sound from the transducer. In this situation, sound will reflect from the defect but not return to the transducer due to the orientation of the reflector. Therefore, such defects are detected by monitoring for backwall signal loss or attenuation. This backwall amplitude change may be missed entirely if the backwall signal is saturated. The Backwall Echo Attenuator option allows the operator to monitor the backwall at a lower gain setting for any signal loss, while still scanning the remainder of the test piece at a high gain level for small defects. The second common inspection for the Backwall Attenuator is in porosity inspection. Because porosity tends to scatter sound instead of return a clear echo, backwall amplitude is sometimes the only way to positively differentiate porosity from material grain structure. The Backwall Echo Attenuator is again used to bring the entire backwall signal on screen to be closely monitored by the operator.
? Wave Analysis
Not available
Available/Optional
Available/Optional
Not available
Not available
EPOCH XT
EPOCH 4+
EPOCH 4
EPOCH 4B
EPOCH LT
Wave Analysis - The Wave Analysis software option allows the operator to make precise point-to-point measurements from any two points along a waveform. This option activates to indexing arrows that trace the length of the visible waveform in the A-Scan view. Typically, the operator will capture a single echo waveform using the instrument gate and use the zoom function to view the waveform close up. The Wave Analysis software then allows the operator to trace the entire waveform with two arrows and take a measurement between these two arrows. A common application for the Wave Analysis software is the measurement of oxide scale on the opposite surface of a pipe or tube. The backwall echo is captured and zoomed using the instrument gate, and the Wave Analysis arrows are used to measure the distance between the peaks representing the inner and outer surfaces of the oxide layer, as seen below. 


? Echo to Echo
Available/Optional
Available/Optional
Available/Optional
Standard
Standard
EPOCH XT
EPOCH 4+
EPOCH 4
EPOCH 4B
EPOCH LT
Echo to Echo - The Echo-to-Echo software option allows the user to make a digital measurement between two echoes captured in Gate 1 and Gate 2 on the instrument. This common measurement technique is used to increase the precision of thickness readings by measuring between multiple echoes of a single thickness inspection, eliminating any couplant layer or surface condition discrepancies. This technique is also used to get a clear measurement from a near-surface echo that is obscured by the ringing of the main bang in its first reflection(s).
? Narrowband Filters
Available/Optional
Available/Optional
Available/Optional
Standard
Not available
EPOCH XT
EPOCH 4+
EPOCH 4
EPOCH 4B
EPOCH LT
Narrowband Filters - Narrowband Filters allow the operator to variably tune out unwanted or unnecessary ultrasonic frequencies being received from the test piece into the EPOCH. This filtering can significantly better the signal-to-noise ratio of the A-Scan, particularly in non-homogenous or scattering materials. The Narrowband Filters have preset ranges to encompass commonly used transducer frequencies, but with the Advance User Filter setting from the EPOCH settings menu, the Filters can be tuned to custom low- and high-pass settings for optimization of the option's capability.
? Square Wave Pulser
Available/Optional
Available/Optional
Available/Optional
Available/Optional
Standard
EPOCH XT
EPOCH 4+
EPOCH 4
EPOCH 4B
EPOCH LT
Square Wave Pulser - The Square Wave Pulser is a powerful tool to improve penetration and response of transducers, particularly with low frequency probes and in highly attenuating materials. Unlike the standard, negative spike pulser of most UT inspection units, the tunable square wave pulser matches the EPOCH's excitation pulse duration to the frequency of a particular transducer, allowing the transducer to ring closer to its natural resonance and increase the amplitude of the signal transmitting into the test material from the transducer. This is especially useful with lower frequency transducers, as the natural resonant period of lower frequency transducers is longer than that of higher frequency tranducers and a traditional spike pulse does not obtain optimal results at these longer resonance frequencies.

2.25Mhz Probe with Square Wave Pulser

2.25MHz Probe with Spike Pulser - 12dB Difference!
? Extended Range
Available/Optional
Available/Optional
Available/Optional
Standard
Standard
EPOCH XT
EPOCH 4+
EPOCH 4
EPOCH 4B
EPOCH LT
Extended Range - The Extended Range option increases the standard measurement range of the EPOCH LT and EPOCH 4B from 0.16 inches - 200 inches (4mm - 5,000mm) to the extended range of 0.038 inches - 400 inches (1mm - 10,000mm).
? Expanded Memory
Available/Optional
Available/Optional
Standard
Standard
Standard
EPOCH XT
EPOCH 4+
EPOCH 4
EPOCH 4B
EPOCH LT
Expanded Memory - The Expanded Memory option increase the memory capacity of the EPOCH LT, EPOCH 4B and EPOCH 4 to allow the storage of more waveforms/calibrations and/or thickness readings. The memory is expanded according to the table below:
Expanded Memory Capacity
Standart Memory Capacity
Thickness Readings
40,000
10,000
Waveforms
2,000
500
GageView?
 

The GageView and GageView Pro Interface Programs are Windows-based applications that collect, create, manage, and print data from Olympus thickness gages and flaw detectors.
GageView is compatible with gage models 35DL, 35DLHP, and MG2-DL. It provides the following capabilities:
Creating Datasets and Surveys
Editing stored data such as thickness data
Viewing Dataset and Survey file information including thickness readings, waveform, gage setup values, and transducer setup values
Downloading and uploading thickness surveys to and from the Panametrics ultrasonic thickness gages
Exporting Surveys to spreadsheets and other programs
Collecting snapshot screens (graphical data sent by a thickness gage that duplicates the exact screen display)
Printing reports such as Thickness, Setup Table, Statistics, Color Grid, and others
Upgrading gage operating software
GageView Pro is compatible with flaw detector models Epoch 4, Epoch 4B, Epoch LT, Epoch 4 PLUS, and Epoch XT, as well as the gage models listed above. When used with flaw detectors, GageView Pro provides the following capabilities:
Exporting thickness or amplitude data saved on the Epoch to Excel, Word, or similar programs
Create, format, and manage test databases
Export real-time screen snapshots, including B-scans, to a PC or printer
Import and export setups between the Epoch and a PC
Set up inspection plan templates, including pre-loaded probe calibrations, IDs, and memos
Create a custom DGS probe library
Upgrade Epoch operating software
 

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