Flaw Detector
EPOCH 6LT
EPOCH® 6LT Portable Flaw Detector
Elevate Your Inspections
• Maximum Uptime
• Safety
• Portability
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Don’t compromise on the inspection capabilities of your flaw detector. Now, inspectors
who work in rope access applications or prioritize portability can take advantage of the
functionality they need, in a small, portable instrument. The EPOCH® 6LT flaw detector
combines the functionality of a powerful ultrasonic instrument with an ergonomic form
factor matched specifically to rope access and high portability applications.
No Compromises
Reliable Flaw Detection
in the Palm of Your Hand
Comfortable
Weighs just 1.95 pounds (890 g) with a
grip-oriented weight distribution
Easy to Use
Rotary knob and simple button design makes
navigation easy, even when wearing gloves
Clear, Bright Screen
View A-scans clearly in any light
Tough and Reliable
Engineered to IP65/67 and drop tested
Rotary knob control
Easy parameter adjustment
Comfortable hand grip
Hold the instrument with
one hand
Connectors with
center pin ID
Faster set up for thickness
gage dual transducers
Display rotation
Portrait and
landscape views
Simple button design
Efficient navigation
¼-20 threaded
insert connector
Connect to Olympus and
third party accessories
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Harness the Power of Portability
The workflow of the EPOCH® 6LT flaw detector is simple and straightforward so you can spend more time on your inspection
and less time adjusting the instrument. The primary screen is a large, optimized A-scan display that contains links to
commonly used features and functions. Combined with an improved scanning workflow, users can complete their inspections
with minimal button presses and adjustments. When you do need to navigate the menu, prominent icons make it simple to
find the feature you’re looking for.
Despite its small size, the EPOCH 6LT flaw detector offers the features and functions necessary to meet the requirements of
nearly any conventional ultrasonic inspection application and includes additional functionality for expanded connectivity.
The EPOCH® 6LT flaw detector offers features to help keep rope access technicians safe during challenging inspections.
The rope access accessory kit enables users to secure the instrument to their leg with a strap or attach it to a harness for
true hands-free operation. This includes the ability to rotate the instrument’s inspection display to portrait mode, enabling
proper visibility of the A-scan and readings when connected to your leg. With the unit secured, the user can make parameter
adjustments with one hand, leaving the other hand free to manipulate the transducer or maintain balance and personal safety.
The user interface is optimized for one-hand use, so inspectors can control the inspection parameters without interrupting
flaw scanning. For additional flexibility, the EPOCH 6LT flaw detector is compatible with a wide variety of Olympus and third-
party accessories via the ¼-20 threaded insert.
Rope Access Inspection Applications
Offshore Platform
The EPOCH 6LT flaw detector is the
ideal tool for inspecting offshore oil
platforms that are susceptible to
corrosion.
• Optional corrosion software module for
fast, efficient scanning
• Easy to use while hanging from an
offshore platform
In-Service Wind
Turbines
Technicians regularly inspect in-service
wind turbine towers and blades and
need a versatile flaw detector to do
their job.
• Powerful acoustic and sizing features
for inspecting the tower’s welded joints
• Pulsing power and high signal-to-noise
ratio required for inspecting composite
blades
Bridges and Structural
Steel
Bridges and structural steel are
inspected to help ensure safety.
• Has all the necessary features for AWS
code-compliant inspections, including
an optional AWS D1.1/1.5 Weld Rating
Calculator
• Includes DAC/TCG and DGS/AVG
for flexible weld and base material
inspections
Intuitive Navigation: A two-screen, icon-based interface
makes navigation quick and easy
Optimized for One-Handed Operation: The hardware
and software maximize efficient one-handed operation,
freeing up a user’s other hand to maneuver the probe
Advanced Flaw Detection Capabilities: Contains all
the core functionality of the EPOCH 650 flaw detector and
meets the requirements of EN12668-1:2010
Fast Corrosion Defect Scanning: Optional corrosion
software combines the ease of use of a thickness gage
with the flexibility of a flaw detector and includes center-pin
transducer ID for faster set up
Stay Connected: Optional wireless LAN (Wi-Fi) connectivity
for on-the-go data backups, setup downloads, efficient fleet
management, and powerful cloud applications through the
Olympus Scientific Cloud
More Functionality on the Go
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Powerful Features Optimized for
One-Handed OperationThrow It in Your Bag and Go
NDT inspectors working in high portability industries require a lightweight, capable equipment. The EPOCH® 6LT flaw detector
has a small form factor and weighs only 1.95 pounds (890 g) yet has all of the core functionality of the popular EPOCH 650
flaw detector. The EPOCH 6LT flaw detector is comfortable to use with one hand and is small enough to fit into a bag with
other equipment.
High Portability Inspection Applications
In-Service Pipeline
Pipeline inspectors often travel long
distances, making portable equipment
essential.
• The EPOCH 6LT flaw detector is
lightweight with an ergonomic design
• Includes dynamic flaw sizing software,
such as DAC/TCG and DGS/AVG for
inspecting welds, as well as optional
corrosion software
In-Service Rail
Rail inspectors are constantly on the
move and need a flaw detector that’s
up to the challenge.
• An intuitive user interface enables fast,
efficient flaw detection
• Rugged and lightweight to endure the
challenges of rail inspection
Aircraft Maintenance
Aircraft maintenance inspectors
often need to carry multiple pieces of
equipment and need an ultra-portable
flaw detector.
• The EPOCH 6LT flaw detector is
compact and easily fits in a bag with
other equipment
• Has the pulser power and high signal-
to-noise ratio required for inspecting
composite aircraft skins
Based on the same digital architecture as the EPOCH® 650 flaw detector, the EPOCH 6LT flaw detector provides flexible,
powerful pulsing and receiving features to accommodate the needs of most flaw detection inspections.
Standard Software Features
• Dynamic DAC/TCG: compares echo signals to a DAC curve
or reference echo
• DGS/AVG: compares echo signals to a DGS/AVG diagram
Added Versatility:
Optional Software Features
• AWS D1.1 and D1.5: Provides a dynamic indication rating for
AWS inspection applications
• Corrosion Module: Includes automatic probe recognition,
automatic gain control (AGC), thickness gage measurement
algorithm, true V-path correction, and an automatic zero
function (“Do Zero”)
• Back Wall Echo Attenuator: Attenuates the back wall of an
inspected part using the screen region defined by Gate 2
Efficient Data Management
• Compatible with GageView® Pro PC interface program
• Export files via wireless LAN (Wi-Fi) or transfer to a removable
USB memory stick
• Supports bitmap (BMP), comma-separated value (CSV), and
PDF file formats
Connected and Cloud Enabled
The EPOCH 6LT flaw detector features cloud connectivity.
Connect your flaw detector to the Olympus Scientific Cloud
via an optional Wi-Fi USB dongle, enabling powerful cloud-
based tools, including:
• Wireless firmware upgrade
• File backup and archiving
• Remote file access and management
Cloud file management includes all EPOCH 6LT file types, as
well as exported report formats and image files. This remote
data sharing capability makes it easier than ever to report
and communicate your inspection results.
Pulser/Receiver
The instrument comes standard with powerful flaw detection
capabilities, such as:
• PerfectSquare™ tunable square wave pulser
• Digital high dynamic range receiver
• Eight (8) 100% digital filter sets
• Auto- or manually-adjustable pulse repetition frequency (PRF)
from 10 Hz to 2000 Hz
• Pulser voltage from 100 V to 400 V
• Amplitude resolution to +/- 0.25%
• Five customizable digital measurements
www.olympus-ims.com
EPOCH_6LT_EN_201706 • Printed in the USA • P/N: 920-444-EN Rev. A
48 Woerd Avenue, Waltham, MA 02453, USA, Tel.: (1) 781-419-3900
110 Magellan Circle, Webster TX, 77598, USA, Tel.: (1) 281-922-9300
505, boul. du Parc-Technologique, Québec (Québec) G1P 4S9, Tel.: (1) 418-872-1155
1109 78 Ave, Edmonton (Alberta) T6P 1L8For inquiries - contact
www.olympus-ims.com/contact-us
is certified to ISO 9001, ISO 14001, and OHSAS 18001.
*All specifications are subject to change without notice.
All brands are trademarks or registered trademarks of their respective owners and third party entities.
PerfectSquare is a trademark and EPOCH and GageView are registered trademarks of Olympus Corporation.
Copyright © 2017 by Olympus.
EPOCH® 6LT Specifications
General
User Interface Languages English, Spanish, French, German, Japanese, Chinese,
Portuguese, Russian, Italian
Transducer connections LEMO 00
Data storage 100,000 IDs onboard
Battery type and life Single lithium-ion rechargeable standard; 6 h life
Power requirements AC Mains: 100 VAC to 120 VAC, 200 VAC to 240 VAC,
50 Hz to 60 Hz
Display type Full VGA (640 × 480 pixels) transflective color LCD,
60 Hz update rate
Display dimensions (W × H, Diag.) 117 mm × 89 mm, 146 mm (4.62 in. × 3.49 in., 5.76 in.)
Overall Dimensions (W × H × D) 209 mm × 128 mm × 36 mm, 58 mm at the hand grip
(8.2 in. × 5 in. × 1.4 in., 2.3 in. at the hand grip)
Weight 890 g (1.95 lb.), including lithium-ion battery
Instrument Inputs/Outputs
USB ports (1) USB 1.1 Full Speed Host (Type A)
(1) USB 2.0 Full Speed Client (Type Mini B)
Video output 1 digital video output
Environmental Ratings
IP rating Ingress Protection (IP) engineered to IP67 (dust tight and
water submersion) and IP65 (dust tight and water jets)
per IEC 60529-2004 (Degrees of Protection provided by
enclosures—IP Code).
Explosive atmosphere MIL-STD-810F, Method 511.4, Procedure 1.
Shock tested MIL-STD-810F, Method 516.5, Procedure I, 6 cycles
each axis, 15 g, 11 ms half sine.
Vibration tested MIL-STD-810F, Method 514.5, Procedure I, Annex C,
Figure 6, general exposure: 1 hour each axis.
Operating temperature -10 °C to 50 °C (14 °F to 122 °F)
Battery storage temperature 0 °C to 50 °C (32 °F to 122 °F)
Pulser
Pulser Tunable square wave
PRF 10 Hz to 2000 Hz in 10 Hz increments
Energy settings 100 V, 200 V, 300 V, or 400 V
Pulse width Adjustable from 25 nsec to 5,000 nsec (0.1 MHz) with
PerfectSquare™ technology
Damping 50, 400 Ω
Receiver
Gain 0 to 110 dB
Maximum input signal 20 Vp
Receiver input impedance 400 Ω ± 5%
Receiver bandwidth DC to 26.5 MHz at -3 dB (standard version)
0.2 to 26.5 MHz at -3 dB (EN12668 compliant version)
Digital filter settings 8 digital filter sets (standard version)
7 digital filter sets (EN12668 compliant version)
Rectification Full-Wave, Positive Half-Wave, Negative Half-Wave, RF
System linearity Horizontal: ± 0.5% FSW
Resolution 0.25% FSH, amplifier accuracy ± 1dB
Reject 0 to 85% FSH in 1% increment positions
Amplitude measurement 1.25% to 110% full screen height
Measurement rate Equivalent to PRF in all modes (single shot)
Calibration
Automated calibration Velocity, zero offset
Straight beam (first back wall or echo-to-echo)
Angle beam (sound path or depth)
Test modes Pulse echo, dual, or through transmission
Units Millimeters, inches, or microseconds
Range 4.31 mm to 6,700 mm at 5,900 m/s (0.2320 in./μs)
Velocity 635 m/s to 15240 m/s (0.0250 in./μs to 0.6000 in./μs)
Zero offset 0 to 750 μs
Display delay -10 microseconds to 2203 microseconds
Refracted angle 0° to 85° in 0.1° increments, then jump to 90°
Gates
Measurement gates 2 fully independent flaw gates
Gate start Variable over entire displayed range
Gate width Variable from 0.040 microseconds to end of displayed
range
Gate height Variable from 2 to 95% full screen height in 1%
increments
Alarms Positive and negative threshold/curve, minimum depth
(gate 1 and gate 2)
Measurements
Measurement display locations 5 locations available (manual or auto selection)
Gate (1, 2) Thickness, sound path, projection, depth, amplitude,
time-of-flight, min./max. depth, min./max. amplitude,
sizing measurements based on mode
Echo-to-echo Standard gate 2 – gate 1
DAC/TCG Standard, up to 50 points, 110 dB dynamic TCG range
Special DAC modes Custom DAC (up to 6 curves), 20–80% view
Curved surface correction Standard OD or bar correction for angle beam
measurements
Software Options
EP6LT-AWS (Q1400007):
AWS D1.1/D1.5 weld rating calculator
EP6LT-CORRSN (Q1400008):
Corrosion module
EP6LT-BEA (Q1400009):
Back wall echo attenuation gate
Optional Accessories
BATT-10025-0024 (Q7600001):
Lithium-ion rechargeable battery
EP-MCA-X:
EPOCH series charger / adaptor with
power cord
HNDL-10018-0001 (Q7790068):
EPOCH 6LT wrist strap
EPLTC-C-USB-A-6 (U8840031):
USB cable, mini A to mini B
CASE-10042-0001 (Q7640003):
EPOCH 6LT transport case
600-DP (U8780297):
Display protectors (10 pack)
EP6LT-KIT-ROPE (Q7790069):
EPOCH 6LT rope access accessory kit
EP4/CH (U8140055):
EPOCH series chest harness
EP6LT-STAND (Q7790070):
EPOCH 6LT desktop stand
EPXT-EC-X:
EPOCH series external charging base
with power cord