EPOCH 700 Conventional Ultrasonic Flaw Detector
The EPOCH™ 700 conventional ultrasonic flaw detector enhances every signal, brings more confidence to every inspection, and seamlessly connects every result. Today’s only ultrasonic flaw detector that combines a modern touchscreen with a dedicated adjustment knob and direct-access function buttons, the EPOCH 700 is a new benchmark in conventional UT, engineered for field realities, built with tools that deliver provable results, and designed to put inspection data to work long after the scan is complete.
The EPOCH 700 has achieved EPRI PDI qualification for key nuclear inspection procedures, including weld examination, flaw sizing, and bolt inspection applications, further expanding its capabilities for critical asset integrity programs.
EPOCH 700 Ultrasonic Flaw Detector: High-Resolution Portable UT for Connected Inspections
The EPOCH 700 flaw detector delivers high-resolution signal acquisition and clear, reliable data, even in challenging, high-noise environments. It combines the flexibility of a touchscreen, adjustment knob, and direct-access button interface designed for real-world work. Its intuitive user experience helps inspectors of all skill levels communicate inspection results more effectively. And by bringing support for open-format .nde files to portable conventional UT inspection, it helps connect critical data across inspection workflows.
Portable Ultrasonic Flaw Detector with 24-Bit Signal Resolution and High Dynamic Range Receiver
Advanced 24-bit A-scan digitization enables high-resolution signal acquisition, with amplitude measurements up to 800% full-screen height and reliable defect sizing, even at high gain settings. These capabilities support the evaluation of subtle reflectors, near-surface indications, and complex geometries.
Enabling 24-bit amplitude depth, a powerful high-dynamic range receiver captures the full amplitude of returning ultrasonic echoes while minimizing saturation and clipping. This helps maintain signal fidelity across a wide range of inspection applications.
A new, high-resolution display delivers finer graphics, sharper A-scan rendering, and more readable data overlays, all of which are important for interpreting subtle signals in challenging lighting conditions.
Flexible Ultrasonic Flaw Sizing and Evaluation Tools
PerfectSquareTM Tunable Square Wave Pulser: Provides precise control over the energy and frequency characteristics of the transmitted sound pulse, with pulser voltage settings that support the full range of conventional UT applications.
Extensive Digital Filter Sets: More than 20 fully digital filter sets help optimize performance across a wide range of applications, from low-frequency inspection of cast iron and austenitic stainless steel to high-frequency inspection of aerospace components.
Full Suite of Sizing Methods: Supports DAC/TCG with ASME, JIS, CNDAC, and custom curve configurations; DGS/AVG for echo-height-based flaw sizing; and AWS D1.1/D1.5 for applications requiring dynamic reflector indication ratings.
Modern Touchscreen, Adjustment Knob, and Direct-Access Buttons
The EPOCH 700 flaw detector combines an intuitive touchscreen interface with a dedicated adjustment knob and direct-access physical buttons. Adjust gain, move a gate, freeze the display, or save a file without removing your gloves or cleaning couplant from your hands.
- Mobile-Inspired User Interface: Features menu-based navigation, color-coded status indicators, and context-aware layouts designed to simplify setup and operation from the first startup.
- Dedicated Adjustment Knob: Provides smooth, continuous, tactile control and includes center-click functionality for efficient navigation and selection confirmation.
Portable Ultrasonic Flaw Detector Designed for Field Reliability
Balanced Ergonomics for All-Day Operation: At approximately 1.8 kg (3.9 lb), including the battery, the EPOCH 700 flaw detector is designed for comfortable, full-featured portability. It is substantial enough to provide a stable, controlled feel while remaining light enough for extended one-handed operation.
IP65-Rated Environmental Protection: The EPOCH 700 flaw detector features an IP65-rated enclosure that helps protect against dust and water ingress in demanding inspection environments. Tested to MIL-STD-810 standards for shock and vibration, it is designed to withstand the drops, impacts, and vibrations commonly encountered during field inspections.
Tools for Inspectors of All Skill Levels
The tools you need to inspect with confidence and the documentation to support your results. Reliable digital records help improve traceability and streamline reporting throughout the inspection workflow.
Part & Weld Setup with Integrated Ray Trace Visualization Connect A-scan data directly to the geometry being inspected, helping correlate signal indications with their physical locations. Integrated ray trace visualization can reduce reliance on reference materials and manual calculations during setup.
Open .nde File Format Support: A Portable UT First The EPOCH 700 is the first portable conventional UT flaw detector to support .nde files, an open data format built on modern web technologies. A verifiable digital inspection record is automatically generated for every inspection and can be imported directly into Evident analysis platforms as well as compatible third-party software tools.
Inspection Reporting and Data Management for Portable UT
Visual Sizing Method Configurator: Displays a live preview of the selected sizing method, making it easy to confirm that the chosen configuration matches the inspection requirements before data acquisition begins.
Enhanced Onboard Reporting: Generate structured inspection reports directly on the instrument. Report generation no longer requires a PC, wired connection, separate software application, or photographs of the instrument display.
A-Scan Recording: Record up to 30 seconds of live A-scan data at 60 frames per second. Recorded sequences can be reviewed directly on the instrument and saved as .nde files for documentation and analysis.
Robust File Management: A modern file-management interface and folder-based organization simplify large-scale data management. With 64 GB of onboard storage, inspectors can easily filter, sort, and access inspection files directly on the instrument.
Connected Inspection Workflows
Built on the UNIS Software Platform: Evident's UNIS software platform supports feature reuse, interoperability, and consistent workflow logic across multiple instruments and product generations. It also enables software capabilities developed for one compatible platform to be extended across the broader Evident portfolio, helping users benefit from ongoing advancements and a more consistent inspection experience.
Wi-Fi and Bluetooth® Connectivity: Built-in Wi-Fi and Bluetooth connectivity supports wireless file transfer and report sharing. Direct-from-gauge reporting enables inspectors to send reports directly from the instrument without requiring a wired connection to a PC.
Applications
Built for the diverse landscape of ultrasonic flaw detection applications, the EPOCH 700 delivers an ideal combination of ultrasonic power and ease of use that allows any inspector to confidently solve a wide array of inspection challenges.
Weld Inspection
From oil and gas and power generation to infrastructure and transportation, the EPOCH 700 is optimized for weld inspection, one of the most common and diverse segments of ultrasonic flaw detection.
- Strong signal-to-noise performance and excellent pulser characteristics for a wide range of probe frequencies
- Simple configuration and intuitive file manager allow fast initial setup and minimal downtime while switching between transducers
- Digital guidance provides confident configuration of sizing methods and characterization of weld defects through the ray trace feature
- Snapshot reporting makes communicating inspection results easier than ever
Composite Inspection
Composite materials within aerospace, aviation, New Space, automotive, and transit applications can present unique challenges for ultrasonic inspection based on thickness, material variations, and composition. The EPOCH 700 is designed with these challenges in mind, whether providing thickness measurements for quality testing or detecting bond-line failures between material layers and stack-ups.
- 24-bit architecture allows evaluation of materials across a large gain range without saturation
- Digital filtering resolves noise from fiber structures
- Manual adjustment and correction of Time Corrected Gain (TCG) points and other similar sizing method values enable maximum flexibility for material variations
- Powerful pulser performance manages thick and highly attenuating materials with ease
Component and Metal Inspection
Ultrasonic inspection of metals and manufactured components can provide fast, reliable evaluation of high volumes of product without destructive sample testing. The EPOCH 700 is designed with manufacturing and quality in mind, providing access to precise results without the challenges of a complicated user experience.
- Intuitive touchscreen for seamless navigation of inspection controls
- Ergonomically designed for benchtop or portable inspections
- Class-leading ultrasonic capabilities for applications ranging from clean metals to difficult castings and specialty alloys
- Simple file management allows confident storage and recall of application configurations
- Snapshot reports and .nde file storage provide a range of options to integrate inspection results and report findings
Demanding Nuclear Inspections
The EPOCH 700 is qualified to support a broad range of EPRI PDI ultrasonic inspection procedures for key nuclear industry applications. Combined with an expanded portfolio of qualified probes, the instrument delivers the performance, flexibility, and confidence required for critical weld, flaw sizing, and component examinations. The EPOCH 700 has successfully achieved qualification for the following procedures:
- Generic Procedure for the Ultrasonic Examination of Ferritic Pipe Welds PDI-UT-1
- Generic Procedure for the Ultrasonic Examination of Austenitic Pipe Welds PDI-UT-2 (with IGSCC Endorsement)
- Generic Procedure for the Ultrasonic Through-Wall Sizing of Planar Flaws in Similar Metal Piping Welds PDI-UT-3 (with IGSCC Endorsement)
- Generic Procedure for the Straight Beam Ultrasonic Examination of Bolts and Studs PDI-UT-5
- Generic Procedure for the Ultrasonic Examination of Dissimilar Metal Welds PDI-UT-10
- Additional qualified probes C542, C571, C5011
Specifications
| GENERAL | |
| Housing Dimensions | 230.7 mm × 166.9 mm × 71.9 mm (9.1 in. × 6.6 in. × 2.8 in.) |
| Weight | 1.8 kg (3.98 lb), including lithium-ion battery |
| Battery Life | Over 8 hours for standard operation |
| Operating Temperature | -10 °C to 50 °C (14 °F to 122 °F) operating temperature range at 80% relative humidity |
| Storage Temperature | -20 °C to 50 °C (-4 °F to 122 °F) [with batteries] |
| Display Type | 7-inch TFT LCD (thin-film-transistor liquid crystal display) |
| Display Dimensions (WxH, Diagonal) | 154.2 mm × 85.9 mm, 177.8 mm (6.1 in. × 3.4 in., 7.0 in.) |
| Power (DC-IN Voltage) | 24 VDC (60 W) |
| DC Connector | Circular, 2.5mm pin adapter, center-positive |
| Data Storage | 64 GB internal storage |
| PULSER | |
| Pulse Voltage | 100 V, 200 V, 300 V, 400 V, unipolar excitation |
| Pulse Damping | 50 Ω or 400 Ω |
| Pulse Repetition Frequency | 10 Hz to 2000Hz, “Single Shot” (always equivalent to measurement rate) |
| Tunable Square Wave Pulser | 20 nanoseconds to 5000 nanoseconds (100kHz to 25MHz), user adjustable |
| Pulse Modes | Pulse-Echo, Dual, Thru Transmission (TTU) |
| RECEIVER | |
| Gain | 0 to 110 dB, 0.1 dB increments |
| Filters | 23 digital filters*, Narrowband, Wideband, and Low-Pass |
| Rectification | Fullwave, Half+, Half-, RF (Unrectified) |
| A-Scan Bit Depth | 24 bits |
| Stored A-Scan Samples | Minimum 1024 saved A-scan points @ 24bit/point |
| Amplitude Range | User selectable 0-110%, 0-400%, or 0-800% full screen height |
| System linearity | Horizontal: ± 0.5% FSW |
| Resolution | 0.25% FSH, amplifier accuracy ± 1dB |
| Reject | 0 to 85% FSH in 1% increment positions |
| Measurement rate | Equivalent to PRF in all modes (single shot) |
| Sample Rate | User selectable standard (200 MS/s), extended range (25 MS/s), or high resolution (400 MS/s) |
| 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 Transmision |
| Units | Millimeters, inches, or microseconds |
| Range | 3.5 mm to 24,500 mm at 5,900 m/s (0.138 in. to 1,000 in. at 0.2320 in./µs) |
| Velocity | 635 m/s to 15240 m/s (0.0250 in./µs to 0.6000 in./µs) |
| Zero offset | 0 to 750 µs |
| Display delay | 0 microseconds to 2,203 microseconds |
| Refracted angle | 0° to 85° in 0.1° increments, then jump to 90° |
| GATES | |
| Measurement gates | 2 fully independent flaw gates, 1 interface gate |
| Gate start | Variable over entire displayed range |
| Gate width | Variable from 0.040 microseconds to end of displayed range |
| Gate threshold | Variable from 2 to 100% full screen height in 1% increments |
| Alarms | Positive and Negative Threshold |
| Gate sychronization | Gate synchronization in Gate B-A, Gate A-1, Gate B-I |
| MEASUREMENTS | |
| Measurement display locations | 5 locations available (manual or auto selection) |
| Gate (A, B) | Thickness, Soundpath, Projection, Depth, Amplitude, Time-Of-Flight |
| Echo-to-Echo | Standard Gate B - Gate A |
| Other measurements | Overshoot (dB) value for DGS/AVG, ERS (equivalent reflector size) for DGS/AVG, AWS D1.1/D1.5 A, B, C, D values |
| Sizing Methods | DAC/TCG, TCG Table, AWS D1.1/D1.5, DGS/AVG |
| ENVIRONMENTAL | |
| IP Rating | Rated IP65 |
| Drop-Tested | Method 516.6 Procedure IV, 26 drops, package for shipment |
| Shock-Tested | MIL-STD-810F, Method 516.5 Procedure I, 6 cycles each axis, 15G, 11 ms half sine 6 cycles each axis, 15G, 11 ms half sine shock testing |
| Vibration-Tested | MIL-STD-810F, Method 514.5 Procedure I, Annex C, Figure 6, general exposure; 1 hour each axis vibration test |
| INPUT / OUTPUT | |
| Connectivity | • USB C peripheral port (supports USB 2.0, USB 3.0, display port over USB alternate mode, Ethernet over USB 2.0 with optional external adapter) • Wi-Fi/Bluetooth • 19-pin LEMO I/O connector |
| Alarm Output | 3 Digital Alarm Outputs, 5V TTL |
| Analog Output | 2 Analog Outputs, 0-1V or 0-10V scaling |
| Encoders | 2 axis quadrature encoder inputs |
| Synchronization (Trigger Sync) | Sync Input & Output Signals |
Resources
Insights
A New UT Flaw Detector Ready for Real-World Inspections
The new EPOCH™ 700 conventional ultrasonic flaw detector was designed around the realities of the inspection environment. One of its defining features is the way its interface and physical controls work together: a modern touchscreen, a dedicated adjustment knob, and direct-access physical buttons, all providing access to the same critical functions. This combination gives inspectors the flexibility to use the control method that best fits the inspection environment.