Atec Epoch-LTC User Manual

ULTRASONIC FLAW DETECTOR

EPOCH LTC

Rugged, Handheld Flaw Detector

The EPOCH LTC digital ultrasonic flaw
detector offers state-of-the-art technology in
a compact and lightweight package. Based
on the class-leading EPOCH XT, the
EPOCH LTC is full featured, complies with
the EN 12668-1 standard, and has various
specialized options to meet your inspection
needs.

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

Part of the EPOCH

flaw detector family

The EPOCH LTC features a bright, multi­color transflective, full-VGA (640 pixels x
480 pixels) display offering high-resolution
A-scans and superior visibility in all lighting
conditions, including direct sunlight. The
EPOCH LTC is also designed for IP67
rating, ensuring that the instrument can
perform in the harsh environments com­mon in the inspection field.

Features

■ Designed for IP67 rating to ensure field

ruggedness

■ Complies with the EN12668-1 standard

■ Only 960 g (2.1 lb)

■ Full-color VGA display with transflective

technology

■ USB On-The-Go port for computer

communication and direct printing

■ Onboard and miniSD Card storage

capabilities for the data logger

■ Standard dynamic DAC/TVG

■ Standard onboard DGS/AVG

■ Digital high dynamic range receiver with

digital filters

■ High-performance square wave pulser

with tuning option

920-121G-EN

Powerful Performance in a Compact Flaw Detector

The EPOCH LTC offers many standard features to meet your inspection needs. These include a fixed width square wave pulser, dynamic
DAC/TVG, onboard DGS/AVG, selectable digital filters, gain range from 0 dB to 110 dB, peak memory, 0.01 mm (0.001 in.) measure­ment resolution, and one gate with programmable alarms. In addition, the EPOCH LTC offers many optional, application-specific soft­ware features such as AWS D1.1/D1.5 weld rating, manual PRF control, pulse width tuning, and the GageView Pro interface program.

• Standard fixed widthc square wave

pulser with PerfectSquare™ technology

• Digital receiver filtering: standard,

broadband, and high-pass settings

• Four, fully customizable measurement

displays 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 to 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.

Environmental Ratings

IP rating

Explosive atmosphere

Shock tested

Vibration tested

Drop tested

Operating temperature Lithium-ion: –10 °C to 50 °C (14 °F to 122 °F)

Battery storage
temperature

Recharge temperature
range

Battery compartment

I/O door

Simplified Keypad Design

The EPOCH LTC features a simple keypad
design that allows full control with the left
or right hand for direct access to important
functions. The keypad design also makes
for rapid and easy parameter adjustments
and recall of instrument configuration
(CAL) files.

The keypad is available in English, interna­tional symbols, Japanese, and Chinese.

Four custom function keys allow opera­tors to select preset values for instrument
configuration parameters.

Designed to meet the standards of the Ingress
Protection (IP) rating number IP67

Safe operation as defined by Class I,
Division 2, Group D, as defined in the Na­tional Fire Protection Association Code (NFPA

70), Article 500, and tested using MIL-STD­810F, Method 511.4, Procedure I.

IEC 60068-2-27; 60 g, 6 ms H.S., 3 axes,
18 shocks total

Sine vibration as per IEC 60068-2-6; 50 Hz
to 150 Hz at 0.03 in. DA or 2 g, 20-sweep
cycles

MIL-STD-810F, 4.5.5 Procedure IV–Transit
drop. 48 in. drop onto 2 in. plywood surface
backed by concrete. Drop on each face, edge,
and corner for a total of 26 drops

0 °C to 50 °C (32 °F to 122 °F)

0 °C to 40 °C (32 °F to 104 °F)

Sealed – no tools necesssary to replace
battery

Sealed I/O door for USB On-The-Go
connection, miniSD Card slot, and
VGA/RS-232 port

Hand strap can be moved for use
with left or right hand

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