EPOCH LT焊缝探伤仪

EPOCH LT焊缝探伤仪/EPOCH LT锻件探伤仪/EPOCH LT铸件探伤仪/北京泰如EPOCH LT供货平台
EPOCH LT焊缝探伤仪/EPOCH LT锻件探伤仪/EPOCH LT铸件探伤仪/北京泰如EPOCH LT供货平台
EPOCH LT焊缝探伤仪/EPOCH LT锻件探伤仪/EPOCH LT铸件探伤仪/北京泰如EPOCH LT供货平台
北京泰如电子科技有限公司
电话：010-57464568
手机：
Q

EPOCH LT
EPOCH LT是一款手持式初级数字式探伤仪，厚度仅为38毫米（1.5英寸），重量仅为1公斤（2.35磅），机身结构横窄竖宽，具有较小60 Hz的快速显示更新率、自动探头校准、数字式数据记录器等特点，以及许多其他测量功能。
EPOCH LT探伤仪是一款厚度仅有38毫米、重量仅为1公斤的手持式数字探伤仪。EPOCH LT探伤仪具有较低60 Hz的快速显示刷新率。该仪器包含自动探头校准功能、数字数据记录器，以及多种其它测量功能。如果要在恶劣的现场条件或苛刻的生产环境中进行快速、基本的缺陷检测，EPOCH LT将为您提供**的解决方案。
北京泰如电子科技有限公司
电话：010-57464568
手机：
Q
特色
轻便的、符合人体工程学要求的设计（1.0公斤）
大屏幕、高亮度、**清晰、全屏或分屏液晶显示（LCD）
自动探头校准功能
显示冻结功能，可保持波形和声程数据
声程数据以英寸、毫米或微秒为单位显示
峰值记忆功能
射频显示模式
报警模式：正阈值、负阈值、较小深度
标准DAC和TVG
手持式探伤仪
结实且轻便 
EPOCH LT体积虽小，但却有着许多通常只有更大的探伤仪才具有的功能。EPOCH LT探伤仪除了具有快速 
60 Hz刷新速率，还具备以下功能：可保持波形数据的显示冻结模式，同时显示A扫描动态波形及其峰值包络的波峰记忆功能，射频显示模式，可选的正阈值、负阈值 或较小深度报警模式，以及校准探头零位偏移和材料声速的自动探头校准功能。 
机载的数字数据记录器操作简便，可存储多达100个校准设置/2000个厚度测量值。可选的增容内存功能可存储500个校准设置/10000个厚度测量值。EPOCH LT数据记录器兼容EPOCH 4系列中其它所有仪器的文件以及GageView Pro接口程序。 

强大的文件处理和传输能力 
可选购的基于Windows 的GageView Pro接口程序，为EPOCH LT添加了实用的数据收集、编辑和读出能力。GageView Pro是一个收集、管理和格式化所存储的检测数据的强大的工具。 
GageView Pro数据库跟踪功能可利用预先加载的校准设置、标识码和注释，设置检测方案。数据可被打印输出或被方便地拷贝粘贴到文档处理文件和电子表格中，以备进一步制作报告之用。
EPOCH LT技术规格
液晶显示：320像素（宽）x 240像素（高）。
显示刷新率：较低60 Hz。
灵敏度：较高达100 dB，参考水平灵敏度的可选分辨率为6 dB或0.1 dB。
自动探头校准：探头零位偏移和/或材料声速的自动校准。
抑制：整个标度的0%～80%，增量为1%。
单位：毫米、英寸、微秒。
材料声速：635 m/s～15240 m/s 。
范围：
4 mm～5000 mm 
1 mm～10000 mm，可选。
折射角度：固定设置为0°、30°、45°、60°、70°，或从10°～85°可变，调节增量为0.1°。
峰值记忆：同时显示以60 Hz刷新率更新的动态A扫描以及A扫描的峰值包络。
脉冲发生器类型：负尖波激励脉冲，以及可选的可调方波。
脉冲能量：低（100 V）、中（200 V）、高（300 V）、较大（400 V）。
阻尼：50 Ω、63 Ω、150 Ω、400 Ω。
检波：全波、正半波、负半波、未经检波的射频波。
模拟带宽：0.3 MHz～20 MHz，-3 dB处。
检测模式：脉冲回波、双晶或穿透。
报警：可选正阈值、负阈值或较小深度模式。
工作温度：-10 °C～50 °C
存储温度：-40 °C～70 °C
电源要求：
AC主电源：100 VAC～120 VAC、 
200 VAC～240 VAC，50 Hz～60 Hz。
电池：内置可充电镍氢电池组，额定6 V，3200 mAh。
电池工作时间：额定5～6小时。充电时间一般为2小时。
探头线缆接口：LEMO 00接口。备有用于LEMO 1和BNC接口的适配器。
键盘：英语或国际符号。
语言：可利用键盘选择语言：英语、法语、德语、西班牙语、意大利语、俄语、日语及用户定义的语言。
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，带电池。
PC机要求：与Microsoft Windows XP和Microsoft Windows 2000兼容。
保修：一年保修，不包括电池。可选*二年延长保修。
数字数据记录器
可存储多达100个校准设置以及2000个厚度测量值。
可选增容的内存可存储多达500个校准设置以及10000个厚度测量值。
标准配置 
带有数字数据记录器、基于微处理器的EPOCH LT超声探伤仪包含以下附件：
EP-MCA：袖珍充电器适配器
EPLT/BAT：镍氢充电电池
EPLT/CAL-NIST：NIST校准证书
910-258：说明手册
36DLP-CC：储运箱
DAC/TVG软件
选购附件
EP4/SC：硬壳运输箱
PLUS/RPC：橡胶防护便携箱
EPLT/DP：显示器保护膜（LCD）
GageView Pro接口程序： 
带有USB线缆。（产品编号：GAGEVIEWPRO-KIT-USB）
软件选项
EPOCH LT的几个针对不同应用的软件选项增强了它的灵活适用性。用户在购买了仪器后，若选购了这些软件选项，可远程激活这些选项。因此*为激活软件选项而将仪器返回到原生产厂！ 
高级DAC/TVG
API 5UE
方波脉冲发生器
AWS D1.1和D1.5
机载DGS/AVG
增容的内存
低脉冲重复频率
回波到回波厚度测量
扩展的范围
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 ** 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 **s 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 **s 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 **, 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 ** and analyzing the characteristics of the return **. However, in this situation, the received ** 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 **.
? 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 **. 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 **s 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 **s 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 ** loss or attenuation. This backwall amplitude change may be missed entirely if the backwall ** is saturated. The Backwall Echo Attenuator option allows the operator to monitor the backwall at a lower gain setting for any ** 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 ** 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 **-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 ** 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