EPOCH 4B Ultrasonic Flaw Detectors

 

The EPOCH 4B flaw detector combines low cost, simple operation and great performance. It has many of the flaw detection features offered by the advanced EPOCH 4 flaw detector but offers fewer software options and a less extensive datalogger.

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STANDARD FEATURES

  • Selectable, tunable square wave or spike excitation pulser

  • Light, ergonomic design (5.7 lbs/2.6 kg)

  • High-power NiMH battery

  • High resolution ELD or LCD with full/split screen views

  • Automated transducer calibration

  • Fast, minimum 60 Hz electronics update rate

  • Full screen capability of 200 in (5,000 mm) longitudinal velocity of steel (expandable to 400 in or 10,000 mm)

  • Minimum range capability 0.16 in or 4 mm (expandable to 0.038 in or 1 mm)

  • Display freeze holds waveform and soundpath data

  • Soundpath data viewable in inches, millimeters or microseconds

  • RF display mode

  • Alarms, threshold positive/negative or minimum depth

  • Dual gates with optional echo-to-echo measurements

  • Security key permits remote upgrade of software options

SOFTWARE OPTIONS

 

GageView Pro Interface Program

The optional GageView Pro interface program adds many practical editing, documentation, review and interface capabilities to the EPOCH 4B flaw detector. It helps manage and format stored inspection data for convenient transfer to or from other software applications.

 

DAC (Distance Amplitude Curve) with Alarm

Calculates signal amplitude as a percentage or dB difference of the DAC curve level (ASME, ASME-3, or JIS). Same-size reflectors peak along the curve independent of their location. An alarm is activated when a gated signal breaks the curve.

 

Low PRF (Pulse Repetition Frequency)

Reduces or eliminates "wrap-around" noise by setting the PRF to a fixed 30 Hz. This feature is often necessary when inspecting materials that are highly attenuating or have long soundpaths.

 

TVG (Time Varied Gain) with 40dB Dynamic Range

Corrects for distance/amplitude variations due to material attenuation and beam spreading. Reference echoes are brought to a standard full-screen level of 80%.

 

Expanded Memory

Increases datalogger capacity from 500 waveforms/10,000 thickness readings, to 2,000 waveforms/40,000 thickness readings.

 

AWS D1.1 & D1.5

Provides a dynamic reflector “indication rating” for various AWS weld inspection applications. This allows for a more efficient inspection by eliminating manual calculations.

 

Narrowband Filters

Allows operator to set narrowband filters around frequency of interest to improve signal-to-noise ratio.

 

Echo-to-Echo Thickness Measurements

Allows operator to make true metal thickness measurements when the outside of the surface is painted or coated.

 

Extended Range

Extends Standard Range specifications: 0.038 to 400 inch (1 to 10,000mm).