The EPOCH 6LT Portable Flaw Detector

The EPOCH® 6LT portable flaw detector combines the functionality of a powerful ultrasonic flaw detection device with a form factor designed to thrive in rope access and high portability applications.

Reliable Flaw Detection in the Palm of your Hand

Portable and easy to use, the EPOCH 6LT flaw detector is an ergonomic, rugged instrument that delivers user comfort and more uptime.

Weighs just 1.95 pounds (890 g) with a grip-oriented weight distribution for one-handed operation with minimal wrist fatigue
Rotary knob and simple button design make it easy to use, even when wearing gloves
Engineered to IP65/67 and drop tested
Clear, bright screen for readable A-scans in any light

More Functionality on the Go

The EPOCH 6LT flaw detector’s workflow is simple and straightforward. Despite the instrument’s small size, it has the features and functions to meet the requirements of nearly any conventional ultrasonic inspection application.

Offers all the core functionality of the EPOCH 650 flaw detector in a small, portable instrument
Meets the requirements of ISO 22232-1
Optional corrosion software with center-pin transducer ID
Optional Wireless LAN connectivity

Designed for Rope Access and Ultra-High Portability Applications

For rope access technicians, the EPOCH 6LT flaw detector offers features to help keep you safe during challenging inspections.

With the optional rope access accessory kit, secure the instrument to your leg with a strap or attach it to your harness, leaving your hands free to maintain balance or adjust the probe
Rotate the display from portrait to landscape to properly view the A-scan and readings
For greater flexibility, the 1/4-20 threaded insert enables you to connect the flaw detector to a wide variety of Olympus and third-party accessories

General

User Interface Languages	English, Spanish, French, German, Japanese, Chinese, Portuguese, Russian, Italian
Transducer Connections	LEMO 00
Data Storage	100,000 IDs onboard
Battery Type and Life	Single lithium-ion rechargeable standard; 6 h life
Power Requirements	AC Mains: 100 VAC to 120 VAC, 200 VAC to 240 VAC, 50 Hz to 60 Hz
Display Type	Full VGA (640 × 480 pixels) transflective color LCD, 60 Hz update rate
Display Dimensions (W × H, Diag.)	117 mm × 89 mm, 146 mm (4.62 in. × 3.49 in., 5.76 in.)
Overall Dimensions (W × H × D)	209 mm x 128 mm x 36 mm, 58 mm at hand grip (8.2 in. x 5 in. x 1.4 in., 2.3 in. at hand grip)
Weight	890 g (1.95 lb), including lithium-ion battery

Instrument Inputs/Outputs

USB Ports	(1) USB 1.1 Full Speed Host (Type A) (1) USB 2.0 Full Speed Client (Type Mini B)
Video Output	1 digital video output

Environmental Ratings

IP Rating	Ingress Protection (IP) engineered to IP67 (dust tight and water submersion) and IP65 (dust tight and water jets) per IEC 60529-2004 (Degrees of Protection provided by enclosures—IP Code). The product rating is confirmed by means of Olympus' internal design verification test process.
Explosive Atmosphere	MIL-STD-810F, Method 511.4, Procedure 1.
Shock Tested	MIL-STD-810F, Method 516.5, Procedure I, 6 cycles each axis, 15 g, 11 ms half sine.
Vibration Tested	MIL-STD-810F, Method 514.5, Procedure I, Annex C, Figure 6, general exposure: 1 hour each axis.
Operating Temperature	-10 °C to 50 °C (14 °F to 122 °F)
Battery Storage Temperature	0 °C to 50 °C (32 °F to 122 °F)

Pulser

Pulser	Turnable square wave
PRF	10 Hz to 2000 Hz in 10 Hz increments
Energy Settings	100 V, 200 V, 300 V, or 400 V
Pulse Width	Adjustable from 25 nsec to 5,000 nsec (0.1 MHz) with PerfectSquare^™ technology
Damping	50, 400 Ω

Receiver

Maximum Input Signal	20 Vp
Receiver Input Impedance	400 Ω ± 5%
Receiver Bandwidth	DC to 26.5 MHz at -3 dB (standard version) 0.2 to 26.5 MHz at -3 dB (ISO 22232-1:2020 compliant version)
Digital Filter Settings	8 digital filter sets (standard version) 7 digital filter sets (ISO 22232-1:2020 compliant version)
Rectification	Full-Wave, Positive Half-Wave, Negative Half-Wave, RF
System Linearity	Horizontal: ± 0.5% FSW
Resolution	0.25% FSH, Amplifier Accuracy +/- 1dB
Reject	0 to 85% FSH in 1% increment positions
Amplitude Measurement	1.25% to 110% full screen height
Measurement Rate	Equivalent to PRF in all modes (single shot)

Calibration

Automated Calibration	Velocity, zero offset Straight beam (first back wall or echo-to-echo) Angle beam (sound path or depth)
Test Modes	Pulse Echo, Dual, or Through Transmission
Units	Millimeters, inches, or microseconds
Range	4.31 mm to 6,700 mm at 5,900 m/s (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	-10 microseconds to 2203 microseconds
Refracted Angle	0° to 85° in 0.1° increments, then jump to 90°

Gates

Measurement Gates	2 fully independent flaw gates
Gate Start	Variable over entire displayed range
Gate Width	Variable over entire displayed range
Gate Height	Variable from 2 to 95% full screen height in 1% increments
Alarms	Positive and negative threshold/curve, minimum depth (gate 1 and gate 2)

Measurements

Measurement Display Locations	5 locations available (manual or auto selection)
GATE (1, 2)	Thickness, sound path, projection, depth, amplitude, time-of-flight, min./max. depth, min./max. amplitude, sizing measurements based on mode
Measurement Display Locations	User selects up to four measurements from either gate to display on the live screen.
Echo-to-echo	Standard gate 2 – gate 1
DAC/TCG	Standard, up to 50 points, 110 dB dynamic TCG range
Special DAC Modes	Custom DAC (up to 6 curves), 20–80% view
Curved Surface Correction	Standard OD or bar correction for angle beam measurements

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