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NDT Equipment and Accesories
Measuring and Testing Instruments


EPOCH LTC: Rugged Handheld Flaw Detector

The EPOCH LTC is a mid-level, handheld ultrasonic flaw detector in a compact 2.12 lbs (0.96 kg) vertical case. It is a full-featured instrument with EN12668-1 compliance and a wide variety of standard features as well as specialized options to meet your inspection needs.

The EPOCH LTC Digital Ultrasonic Flaw Detector offers state-of-the-art technology in a package that is compact and lightweight 2.12 lbs (0.96 kg). Based on the design of the class-leading EPOCH XT, the EPOCH LTC is a full-featured instrument with EN12668-1 compliance and a wide variety of standard features as well as specialized options to meet your inspection needs.

Ultrasonic flaw detection is widely used for locating and sizing hidden cracks, voids, disbonds, and similar discontinuities in welds, forgings, billets, axles, shafts, tanks and pressure vessels, turbines, and structural components.

The instrument features a bright multi-color transflective display with full VGA (640 x 480) resolution providing a high resolution A-scan and superior visibility in all lighting conditions, including direct sunlight. The EPOCH LTC is also designed to the requirements of IP67, assuring that the instrument will perform in the harsh environments common in the inspection field.


  • IP67-sealed to assure field ruggedness
  • EN12668-1 compliant
  • Only 2.12 lbs (0.96 kg)
  • Full color VGA display with transflective technology
  • USB On-the-Go Port for PC
  • Communication and direct printing
  • Mini SD card storage and onboard storage with standard alphanumeric datalogger
  • Standard Dynamic DAC/TVG
  • Standard onboard DGS/AVG
  • Digital High Dynamic Range Receiver with digital filters
  • High Performance Square Wave Pulser with tuning option

Powerful Performance in a Compact Flaw Detector

The EPOCH LTC incorporates many standard features to meet your inspection needs. These include a square wave pulser, dynamic DAC/TVG, onboard DGS/AVG, selectable digital filters, gain range from 0 to 110 dB, peak memory, 0.001 in. (0.01 mm) measurement resolution, and one gate with programmable alarms. In addition, the unit offers many optional application-specific software features: AWS D1.1/1.5 weld rating, Manual PRF Control, Pulse Width Tuning, and the GageView Pro Interface Program.

  • Standard Square Wave pulser with PerfectSquare™ Technology
  • Digital receiver filtering: standard, broadband and high-pass setting
  • Four measurement displays that are fully customizable to meet inspection needs. Select any Gate measurement for each display box.
  • Amplitude measurement resolution of 0.25% full screen height
  • Auto calibration for thickness, soundpath, or angular depth
  • Amplitude measurement from 0% to 110% full screen height
  • PRF Rate automatically controlled from 10 Hz to 500 Hz. Manual control is optional.
  • Grid Display Modes 
    - Standard 1-10 
    - Soundpath 
    - Leg mode for angle beam inspection 
    - Selectable 100% or 110% vertical display

Built For Tough Environments

The EPOCH LTC can withstand the rigors of field operation in harsh environments from offshore to deserts.

  • Designed to meet IP67 environmental seal requirements
  • Approved for Explosive Atmosphere per MIL-STD-810F, Procedure 1, NFPA 70E, Section 500, Class 1, Div. 2, Group D
  • Shock tested per IEC 60068-2-27,
  • 60 g, 6 msec H.S., 3 axes, 18 total
  • Vibration Tested - Sine Vibration per
  • Drop Tested - MIL-STD-810F 4.5.5 Procedure IV - Transit Drop. 48" drop onto 2" plywood surface backed by concrete. Drop on each face, edge and corner; total of 26 drops
  • IEC 60068-2-6, 50-150 Hz @ .03" DA or 2 g, 20 sweep cycles
  • Wide operating temperature range: 
    - Lithium Ion: -10° to 50°C (14° to 122°F) 
    - Battery storage temperature 0° to 50° C (32° to 122° F) 
    - Recharge temperature: 0° to 40° C (32° to 104° F)
  • Hand strap can be mounted for left or right hand operation
  • Sealed battery compartment-no tools required for battery replacement
  • Sealed I/O door for USB On-The-Go (OTG) connection, Mini SD card slot, and VGA / RS-232 port


Simplified Keypad Design

The EPOCH LTC features a simple keypad design that allows full control from left or right hand, for direct access to important functions. Rapid parameter adjustments, and recall of instrument setup (CAL) files are quick and easy. 
Available in English, International Symbols, Japanese and Chinese. 
Four customizable function keys allow the operator to select preset values for instrument setup parameters.

Advanced Software Features and Data Management

Standard Dynamic DAC/TVG: Calculates signal amplitude as a percentage or dB level compared to a DAC curve or a reference echo amplitude fixed with Time Varied Gain. DAC versions include ASME, ASME 3, JIS, and Custom. Contains several key features including: dynamically adjustable?DAC curves, switchable DAC & TVG views, and custom DAC warning curves.

Optional Accessories

  • External Smart Battery Charger: (PN: EPXT-EC)
  • Chest Harness: (PN: EP4/CH)
  • Rubber Protective Case with Pipestand: (PN: EPLTC-RPC)
  • Clear Display Protectors (10): (PN: EPLTC-DP)

Instrument I/O Ports

The EPOCH LTC features a variety of I/O ports to meet your data management and training requirements.
USB On-The-Go: Dual purpose USB port that may be used for PC communication.
Mini SD Storage: Allows inspection data, instrument setup, and screen captures to be stored on a removable disc.
VGA Output: Allows the EPOCH LTC display to be projected or viewed on a standard PC monitor at full update rate (60 Hz)
RS-232 Port: Used to control the EPOCH LTC remotely with a PC.

Instrument I/O Cables

USB to Host PC: (PN: EPLTC-C-USB-A-6)
USB to Client Printer: (PN: EPLTC-C-USB-B-6)
RS-232 6 Foot Length: (PN:EPLTC-C-RS232-6)
VGA 6 Foot Length: (PN:EPLTC-C-VGA-6)