Olympus EPOCH 6LT Ultrasonic Flaw Detector

No Compromises

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.

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

More Functionality on the Go

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.

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 ISO 22232-1
Fast Corrosion Defect Scanning: Optional corrosion software combines the ease of use of a thickness gauge 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

Harness the Power of Portability

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 thirdparty 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 AWS D1.1/1.5 Weld Rating Calculator
- Includes DAC/TCG and DGS/AVG for flexible weld and base material inspections

Throw 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 portableflaw detector.
- The EPOCH 6LT flaw detector is compact and easily fits in a bag with other equipment
- Has the pulser power and high signalto-noise ratio required for inspecting composite aircraft skins

Powerful Features Optimized for One-Handed Operation

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.

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

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
- AWS D1.1 and D1.5: Provides a dynamic indication rating for AWS inspection applications

Added Versatility:

Optional Software Features
- Corrosion Module: Includes automatic probe recognition, automatic gain control (AGC), thickness gauge 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 wireless LAN 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.

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(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)

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

Package Includes:

- Olympus EPOCH 6LT
- Lithium-ion (Li-ion) battery
- AC charger/adaptor with power cord
- External charging base
- Display protectors (10 pack)
- Rope access accessory kit
- EPOCH 6LT Ultrasonic Flaw Detector Getting Started Guide
- USB drive containing the EPOCH 6LT Ultrasonic Flaw Detector User’s Manual
- USB cable
- Wrist strap
- Carry Case
- Warranty Card
- Calibration Certificate