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The Olympus Epoch 4 is an advanced digital ultrasonic flaw detector that combines powerful fully featured measurement capabilities, a comprehensive internal datalogger, and a wide range of software options, to solve many demanding inspection problems. This latest model digital flaw detector is available for rental / hire now!

Key Features

  • VGA output for large screen viewing on a monitor or project screen
  • Selectable, turnable square wave pulser or spike excitation pulser
  • Light, ergonomical design (5.7lbs/2.6Kg)
  • High-power NiMH battery
  • Large, bright, high resolution ELD or LCD with full/split screen views
  • Easy, automated transducer calibration
  • Fast, minimum 60Hz electronics update rate
  • Full screen capability of 400? (or 10000mm) longitude velocity of steel
  • Superior minimum range capability (0.038? or 1mm full scale at longitudinal velocity in steel)
  • Display Freeze holds waveform and southpath data
  • Southpath data viewable in inches, millimetres, or microseconds
  • Peak Hold and Peak Memory features
  • RF display mode
  • Alarms, threshold positive/negative or minimum depth
  • Dual Gates with Echo-to-Echo measurements
  • Security Key permits remote upgrade of software option
  • RS-232 serial port
  • High-speed parallel port
  • Analog port for direct output of amplitude or thickness measurement
  • Customizable narrowband filtering

Technical Specifications

Display 320 pixels (W) X 240 pixels (H), Electroluminescent or Liquid Crystal Display.
Display Update Rate Minimum 60Hz
Sensitivity 110dB Max and Reference level sensitivity feature with 6dB or 0.1 dB selectable resolution.
Self-Calibration Continuously and automatically compensates pulse amplitude and receiver sensitivity for temperature and aging effects.
Auto Transducer Calibration Automated calibration of transducer Zero Offset and/or Velocity.
Reject 0% to 80% of full scale in 1% increments.
Units English, Metric or Microseconds.
Material Velocity 0.025 to 0.6000 in/msec (635 to 15240 m/S).
Zero Offset 0 to 350 msec.
Range Standard 0.38\" to 400\" (1mm to 10000)
Distance Readout Provides single echo or echo-to-echo thickness readings (in large numerals) or soundpath, surface and depth display (selectable large readin
Refracted Angle Fixed settings of 0°, 30°,45°,60°,70° or variable from 10° to 85° in 0.1° resolution.
Gate Start (Standard Dual Gates) Variable over entire displayed range.
Gate Width Variable from gate start to displayed range.
Gate Level off or on with level adjustment from 2% to 95% of full screen in rectified and RF modes.
Zoom Expands gated portion of the display to full graticule width.
Peak Memory Simultaneous display of live A-Scan at 60Hz update rate and peak envelope of A-Scan display.
Peak Hold Freezes Peak Memory echo envelope for waveform and southpath display.
Screen Freeze Freezes and holds waveform and southpath display.
Pulse Energy Low(100V), Medium(200V), High(300V), and Max(400V).
Damping 50, 63, 150, and 400 Ohms.
Rectification Full Wave, Half Wave Positive or Negative and unrectified RF settings.
Analog Bandwidth 0.05MHz to 25Mhz at -3dB
Filters Broadband, or optional Narrowband
Test Modes Pulse Echo, Dual, or Through Transmission.
Alarms Selectable threshold positive/negative or minimum depth modes.
Memory Standard Memory: 500 waveforms, or 10000 thickness readings. Optional Expanded Memory: Total 2000 waveforms, or 40000 thickness readings.
Operating Temperature ELD/ -20°C to 50°C (-4°F to 122°F). LCD/ 0°C to 50°C (32°F to 122°F)
Storage Temperature -40°C to 70°C (-40°F TO 158°F) depending on battery and display.
Power requirements AC Mains: 100-120 VAC, 200-240 VAC, 50-60Hz.
Battery Internal Rechargeable NiMH battery pack rated at 12V at 3800mAH.
Battery Operated Time ELD 7 hours nominal. LCD 10 hours nominal.
Battery Recharge Time 2 hours typical.
Transducer Cable Connectors BNC or Number 1 Lemo.
Keypad English or International symbols.
Languages Available English, French, German, Spanish, Italian, Russian and user customizable.
RS-232 Communications Port Allows interfacing with PCs and Printers. Max Baud Rate 38.4.
High Speed Parallel Port Allows rapid communication to external devices.
Analog Output Keypad selectable voltage output of depth or amplitude data.
VGA Output Port Connects to standard VGA monitor or A/V projector.
PC Requirements PC running minimum Windows 2000, NT 4.0, 98 or 95. Microsoft Internet Explorer.


  US Metric
Dimensions ELD (HxWxT) 11.15 x 6.55\" x 2.6\"\" 28.3 x 16.6 x 6.6 cm
Dimensions LCD (HxWxT) 11.55 x 6.55\" x 2.4\"\" 29.3 x 16.6 x 6 cm


  US Metric
Weight (with battery) 5.7lbs 2.6Kg


Personal Protective Equipment (hard hats, glasses, reflective vest, etc)
Personal Protective Equipment (hard hats, glasses, reflective vest, etc)