Olympus EPOCH 6LT Portable Flaw Detector View larger

Olympus EPOCH 6LT Portable Flaw Detector


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Brand New in box Olympus EPOCH 6LT Portable Flaw Detector with warranty

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Olympus EPOCH 6LT Portable Flaw Detector

Elevate Your Inspections

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.

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

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

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.

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 LANGUAGES English, Spanish, French, German, Japanese, Chinese, Portuguese, Russian, Italian
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 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)
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). The product rating is confirmed by means of Olympus’ internal design verification test process.
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 Turnable 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 BANDWIDTH DC 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 SETTINGS 8 digital filter sets (standard version)
7 digital filter sets (ISO 22232-1:2020 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)



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°



MEASUREMENT GATES 2 fully independent flaw gates
GATE START Variable over entire displayed range
GATE WIDTH Variable over entire 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)



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
MEASUREMENT DISPLAY LOCATIONS User selects up to four measurements from either gate to display on the live screen.
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


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Olympus EPOCH 6LT Portable Flaw Detector

Olympus EPOCH 6LT Portable Flaw Detector

Brand New in box Olympus EPOCH 6LT Portable Flaw Detector with warranty