OLYMPUS Epoch LTC Handheld Flaw Detector

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OLYMPUS Epoch LTC Handheld Flaw Detector
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Olympus Epoch LTC
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Epoch LTC Datasheet

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.
Olympus Epoch LTC 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
Olympus Epoch LTC Specs
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 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
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
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
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