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New Olympus EPOCH 6LT Portable Flaw Detector


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Olympus EPOCH 6LT

Olympus EPOCH 6LT Portable and easy to use, the EPOCH 6LT flaw detector is an ergonomic, rugged instrument that delivers user comfort and more uptime.

Olympus EPOCH 6LT Don’t compromise on the inspection capabilities of your flaw detector. The EPOCH® 6LT portable flaw detector combines the functionality of a powerful ultrasonic flaw detection device with a form factor designed to thrive in rope access and high portability applications.

The Olympus EPOCH 6LT Portable Flaw Detector
Elevate Your Inspections

Reliable Flaw Detection in the Palm of your Hand

Portable and easy to use, the EPOCH 6LT flaw detector is an ergonomic, rugged instrument that delivers user comfort and more uptime.

  • Weighs just 1.95 pounds (890 g) with a grip-oriented weight distribution for one-handed operation with minimal wrist fatigue
  • Rotary knob and simple button design make it easy to use, even when wearing gloves
  • Engineered to IP65/67 and drop tested
  • Clear, bright screen for readable A-scans in any light


portable ultrasonic flaw detection

 More Functionality on the Go

The EPOCH 6LT flaw detector’s workflow is simple and straightforward. Despite the instrument’s small size, it has the features and functions to meet the requirements of nearly any conventional ultrasonic inspection application.

  • Offers all the core functionality of the EPOCH 650 flaw detector in a small, portable instrument
  • Meets the requirements of ISO 22232-1
  • Optional corrosion software with center-pin transducer ID
  • Optional Wireless LAN connectivity


Designed for Rope Access and Ultra-High Portability Applications

For rope access technicians, the EPOCH 6LT flaw detector offers features to help keep you safe during challenging inspections.

  • With the optional rope access accessory kit, secure the instrument to your leg with a strap or attach it to your harness, leaving your hands free to maintain balance or adjust the probe
  • Rotate the display from portrait to landscape to properly view the A-scan and readings
  • For greater flexibility, the 1/4-20 threaded insert enables you to connect the flaw detector to a wide variety of Olympus and third-party accessories
high portable rope access flaw detection


Powerful Features Optimized for One-Handed Operation

The EPOCH 6LT portable flaw detector has a variety of standard and optional software features designed to meet a wide range of flaw detection applications.

Exporting saved inspection files for reporting is easy. Send your inspection results to a removable USB memory stick in a variety of convenient file formats, such as BMP, CSV, and PDF, to quickly communicate your data.

Connected and Cloud Enabled

With optional Wireless LAN, connect your flaw detector to the Olympus Scientific Cloud and access powerful cloud-based features, including:

  • Wireless firmware upgrade
  • File backup and archiving
  • Remote file access and management

Cloud file management includes all EPOCH 6LT file types, making it easier than ever to report and communicate your inspection results.


flaw detection management features


flaw detector software features DAC/TCG and DGS/AVG

Standard Software Features for Reliable Flaw Sizing

Dynamic DAC/TCG: Calculates signal amplitude as a percentage or decibel level compared to a DAC curve or a reference echo amplitude fixed at a time-varied gain. The DAC version includes standard, custom DAC warning curves, and 20–80% views.

DGS/AVG: Enables echo signals to be evaluated with a DGS/AVG diagram, which illustrates the relationship between echo height, flaw size, and distance from the transducer.

AWS D1.1 and D1.5: Provides a dynamic reflector indication rating for various AWS weld inspection applications. This enables more efficient inspections by eliminating manual calculations.


Added Versatility: Optional Software Features

Corrosion Module: For corrosion inspections, this feature enables automatic ultrasonic setups based on transducer selection with automatic probe recognition for all standard Olympus corrosion dual transducers, Automatic Gain Control (AGC), a thickness gage measurement algorithm, true V-path correction, and transducer wear compensation using an automatic zero function (“Do Zero”). The module also features a color-coded grid view for improved corrosion reporting capabilities.

Back Wall Echo Attenuator (BEA): Attenuates the back wall of an inspected part using the screen region defined by Gate 2. BEA software enables the user to monitor for back wall drop off while scanning at a high gain level.



User Interface LanguagesEnglish, Spanish, French, German, Japanese, Chinese, Portuguese, Russian, Italian
Transducer ConnectionsLEMO 00
Data Storage100,000 IDs onboard
Battery Type and LifeSingle lithium-ion rechargeable standard; 6 h life
Power RequirementsAC Mains: 100 VAC to 120 VAC, 200 VAC to 240 VAC, 50 Hz to 60 Hz
Display TypeFull 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 x 128 mm x 36 mm, 58 mm at hand grip (8.2 in. x 5 in. x 1.4 in., 2.3 in. at hand grip)
Weight890 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 Output1 digital video output

Environmental Ratings

IP RatingIngress 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). The product rating is confirmed by means of Olympus’ internal design verification test process.
Explosive AtmosphereMIL-STD-810F, Method 511.4, Procedure 1.
Shock TestedMIL-STD-810F, Method 516.5, Procedure I, 6 cycles each axis, 15 g, 11 ms half sine.
Vibration TestedMIL-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 Temperature0 °C to 50 °C (32 °F to 122 °F)


PulserTurnable square wave
PRF10 Hz to 2000 Hz in 10 Hz increments
Energy Settings100 V, 200 V, 300 V, or 400 V
Pulse WidthAdjustable from 25 nsec to 5,000 nsec (0.1 MHz) with PerfectSquare technology
Damping50, 400 Ω


Maximum Input Signal20 Vp
Receiver Input Impedance400 Ω ± 5%
Receiver BandwidthDC to 26.5 MHz at -3 dB (standard version)
0.2 to 26.5 MHz at -3 dB (ISO 22232-1:2020 compliant version)
Digital Filter Settings8 digital filter sets (standard version)
7 digital filter sets (ISO 22232-1:2020 compliant version)
RectificationFull-Wave, Positive Half-Wave, Negative Half-Wave, RF
System LinearityHorizontal: ± 0.5% FSW
Resolution0.25% FSH, Amplifier Accuracy /- 1dB
Reject0 to 85% FSH in 1% increment positions
Amplitude Measurement1.25% to 110% full screen height
Measurement RateEquivalent to PRF in all modes (single shot)


Automated CalibrationVelocity, zero offset
Straight beam (first back wall or echo-to-echo)
Angle beam (sound path or depth)
Test ModesPulse Echo, Dual, or Through Transmission
UnitsMillimeters, inches, or microseconds
Range4.31 mm to 6,700 mm at 5,900 m/s (0.2320 in./μs)
Velocity635 m/s to 15240 m/s (0.0250 in./μs to 0.6000 in./μs)
Zero Offset0 to 750 μs
Display Delay-10 microseconds to 2203 microseconds
Refracted Angle0° to 85° in 0.1° increments, then jump to 90°


Measurement Gates2 fully independent flaw gates
Gate StartVariable over entire displayed range
Gate WidthVariable over entire displayed range
Gate HeightVariable from 2 to 95% full screen height in 1% increments
AlarmsPositive and negative threshold/curve, minimum depth (gate 1 and gate 2)


Measurement Display Locations5 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
Measurement Display LocationsUser selects up to four measurements from either gate to display on the live screen.
Echo-to-echoStandard gate 2 – gate 1
DAC/TCGStandard, up to 50 points, 110 dB dynamic TCG range
Special DAC ModesCustom DAC (up to 6 curves), 20–80% view
Curved Surface CorrectionStandard OD or bar correction for angle beam measurements
  • Availability: 15 In Stock

We have a number of Home Delivery services available to you. Availability of these options will be shown at checkout.

Delivery ServiceDescriptionPlease NotePrice
StandardWithin 3-4 working days
(07:00 - 19:30hrs)
Weekdays Only (only applies to orders placed before 6pm)$3.95
Express DeliveryNext Working Day (08:00 - 18:00hrs)Weekdays Only, applies to orders placed before 4pm Mon-Thurs, before 3pm on Fri & before 2pm on Sat (no Sunday deliveries)$5.95
Premium Delivery - DPDNext Working Day (07:00 - 19:30hrs)Weekdays Only, applies to orders placed before 4pm Monday-Thursday. (Orders placed after 4pm Thur - Sunday before 1pm, will be delivered Monday)$6.95
Large Parcel DeliveryWithin 3-5 working days (07:00 - 19:30hrs)Weekdays Only (only applies to orders placed before 6pm)$14.95
Premium Saturday DeliverySaturday Delivery (07:00 - 19:30hrs)Delivered Saturday with a 1 Hour delivery slot and Tracking. (only applies to orders placed on Friday before 2pm)$7.95
Premium Sunday DeliverySunday Delivery (07:00 - 19:30hrs)Delivered Sunday with a 1 Hour delivery slot and Tracking. (only applies to orders placed on Friday before 2pm)$7.95

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