OLYMPUS Epoch LTC 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 features 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 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.

The EPOCH LTC features a bright, multi-color 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.

Product Info Related Products

General
Dimensions (W x H x D)	128.9 mm x 223.3 mm x 55.1 mm (5.07 in. x 8.79 in. x 2.17 in.)
Weight	960 g (2.12 lb) with Li-ion battery
Keypad	English, international symbols, Japanese, or Chinese
Display languages	English, Spanish, French, German, Italian, Japanese, Chinese, Russian, Norwegian, Swedish
Transducer connection	LEMO 00
Battery	Rechargeable Lithium-ion. Standard AA battery tray
Battery operating time	Lithium-ion rechargeable battery: 8 hours; AA Li-FeS2: 6 hours AA NiMH cells: 4 hours; AA alkaline cells: 3 hours
Power compatibility	100/120 VAC, 200/240 VAC, 50-60 Hz
Display type	Color transflective LCD, refresh rate of 60 Hz, user-selectable color schemes and brightness, two split-screen modes and one full-screen mode
Display dimensions (W x H)	640 pixels x 480 pixels, 75 mm x 56 mm (2.95 in. x 2.21 in.), 94 mm (3.7 in.) diagonal
Pulser
Pulser	Fixed width square wave pulser optimized for general flaw detection applications
Pulse width	Fixed width in base instrument. Adjustable from 25 ns to 5,000 ns (0.1 MHz) with EPLTC-SWP option
Pulse repetition frequency (PRF)	Automatically software controlled over the range of 10 Hz to 500 Hz. Manual PRF control option available
Energy settings	100 V to 400 V in 100 V increments
Damping	50 &Omega, 100 Ω, 200 Ω, 400 Ω
Receiver
Gain	0 dB to 110 dB — Two user-defined gain step adjustments and presets
Total instrument bandwidth	0.2 MHz to 26.5 MHz at –3 dB
Digital filter settings	Standard: 0.2 MHz to 10.0 MHz Broadband: 2.0 MHz to 21.5 MHz High Pass: 8.0 MHz to 26.5 MHz
Rectification	Full wave, positive half wave, negative half wave, RF
System linearity	Horizontal: ±0.2% FSW
Resolution	0.25% FSH, amplifier accuracy ±1 dB
Amplitude measurement	0 to 110% full screen height with 0.25% resolution
Reject	0% to 80% full screen height with visual warning
Measurement rate	Equal to PRF in all modes
Calibration
Automated calibration	Velocity, Zero Offset Straight Beam (First Backwall or Echo-to-Echo) Angle Beam (Soundpath or Depth)
Test modes	Pulse Echo, Dual, or Through Transmission
Units	Millimeters, inches, or microseconds
Range	3.36 mm to 6,702 mm (0.132 in. to 263 in.) at 5900 m/s (0.2320 in./ms)
Extended range option	3.36 mm to 13,404 mm (0.132 in. to 527 in.) at 5900 m/s (0.2320 in./ms))
Velocity	635 m/s to 15240 m/s (0.0250 in./μs to 0.6000 in./μs)
Zero offset	0 μs to 750 μs
Display delay	59 mm to maximum range (–2.323 in. to maximum range)
Refracted angle	10μ to 85μ in 0.1μ resolution
Measurements
Measurement display locations	5 locations available (manual or auto selection)
Gate (1, 2)	Thickness, Soundpath, Projection, Depth, Amplitude, Time-Of-Flight, Min./Max. Depth, Min./Max. Amplitude
Echo-to-Echo	Standard Gate 2-Gate 1, Optional IF Gate Tracking
Other measurements	Overshoot (dB) value for DGS/AVG, ERS (equivalent reflector size) for DGS/AVG, AWS D1.1/D1.5 rating (D), Reject Value
DAC/TVG	Standard
DAC points	Up to 50 points, 110 dB dynamic range
Special DAC modes	Custom DAC (up to 6 curves)
Curved surface correction	Standard OD or Bar correction for Angle Beam measurements