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 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

https://evidentscientific.com/content/dam/tnm/videos/6LT_ROPEACCESSVIDEO_SUBTITLEMASTER(3).mp4

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 Evident and third-party accessories
high portable rope access flaw detection

Software Features

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 Evident Connect 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 Evident 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.

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.)

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 Evident's 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

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

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 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)

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
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

Applications

EPOCH 6LT for Rope Access Inspections

With features designed to make rope access inspections easier and help keep these inspectors safe, the EPOCH 6LT flaw detector is optimized for one-handed operation and easily attaches to a user’s leg or safety harness.

Read More

EPOCH 6LT for High-Portability Applications

NDT inspectors working in high portability industries need a lightweight instrument that has the features they need to do their job. The EPOCH 6LT flaw detector meets these needs; it’s comfortable to hold in one hand and small enough to fit in a bag with other equipment.

Read More

Resources

Application Notes

Insights

Tutorials

Product Resources