Ultrasonic Flaw Detector TFD807C with 0 to 15000 mm Measuring Range and 20 Hz to

The TFD807C is a portable industrial digital ultrasonic flaw detector designed to quickly, conveniently, and accurately detect, locate, evaluate, and diagnose various defects — including cracks, inclusions, and pores — in workpieces without causing damage. It is suitable for both laboratory and on-site engineering applications.

The instrument is widely used in manufacturing, iron and steel metallurgy, metal processing, chemical industry, and other fields requiring defect detection and quality control. It also supports online safety inspection and life assessment in aerospace, railway transportation, boilers and pressure vessels, and related industries.

Typical applications include locating and sizing hidden cracks, voids, disbonds, and similar discontinuities in welds, forgings, billets, axles, shafts, tanks, pressure vessels, turbines, and structural components.

The core hardware is built on an ARM + FPGA platform, and the software runs on a highly reliable multitasking operating system, significantly improving functionality, portability, durability, and reliability. The instrument uses a master-slave menu with shortcut keys and a digital rotary knob, and its lightweight design allows one-handed operation.

• Full-digital multi-color high-resolution (640×480 pixels) TFT LCD for detailed, user-friendly waveform display.
• Four selectable operating interface styles to suit different environments.
• Fast 60 Hz refresh rate captures subtle waveform changes.
• LCD brightness is freely adjustable.

• All-aluminum metal shell — strong, durable, and excellent electromagnetic shielding.
• 360-degree rotating damping bracket and rubber sheath for ease of use.
• Tempered glass panel — extremely hard, wear-resistant, and scratch-resistant.

• Real-time screenshots of all pages and flaw detection reports, saved as BMP images to a USB drive (color or grayscale selectable).
• Export flaw detection reports as PDF files to a USB drive for easy archiving and printing.
• All PDF content can be customized to user requirements.
• BMP images and PDF files can be viewed on a computer or mobile phone.

Up to 15000 mm in steel; range selectable in fixed steps or continuously variable. Suitable for large workpieces and high-resolution measurements.

• Pulse Energy selectable among 100V, 200V, 250V, 300V, 350V, 400V, and 500V.
• Pulse Width tunable from 0.1 µs to 0.5 µs to match probes of different frequencies.
• Pulse Repetition Frequency adjustable from 20 Hz to 2 kHz.
• Damping selectable among 50Ω, 150Ω, 250Ω, and 500Ω for optimum probe performance.
• Probe selection: single crystal, dual crystal, special angle, penetrating, and climbing probes.

• Sampling: 16-bit AD converter at 320 MHz sampling speed.
• Rectification: positive half-wave, negative half-wave, full-wave, and RF.
• Analog bandwidth: 0.2 MHz to 20 MHz with selectable frequency ranges (automatically set by the instrument) to match the probe for optimum performance.
• Gain: 0 dB to 110 dB, adjustable in selectable steps of 0.1 dB, 2 dB, and 6 dB.

• Two fully independent gates offer a range of measurement options for signal height or distance using peak triggering.
• Echo-to-echo mode allows accurate gate positioning for signals that are extremely close together.
• Gate Start: variable over the entire displayed range.
• Gate Width: variable from Gate Start to the end of the displayed range.
• Gate Height: variable from 0 to 99% full screen height.
• Alarms: threshold positive/negative with LED flash.

• Built-in large-capacity memory; data and files are retained after power failure.
• 500 channel files for calibration setups and probe parameters.
• 1000 wave report files for A-scan waves and settings.
• All files can be stored, recalled, and cleared.
• Channel settings and report files can be exported via USB drive; unlimited storage via USB memory.

• Records the test process and saves it as a video file, playable back through the instrument or dedicated software.
• Supports up to 10 video files, each up to 5 minutes long.
• Saving video files to a USB drive removes limits on number and duration.
• Recording and replaying the testing process greatly aids future study and analysis of flaw detection.
• Video playback supports pause, fast forward, fast rewind, and stop functions.

• Auto calibration: Automated calibration of probe zero offset, probe angle (K value), and material velocity.
• Flaw locating: Live display of sound-path, projection (surface distance), depth, and amplitude.
• Flaw sizing: Automatic flaw sizing using AVG or DAC, speeding up reporting of defect acceptance or rejection.
• Digital readout and trig function: Thickness/depth displayed digitally with a normal probe; surface distance and depth displayed directly when using an angle probe.
• DAC/AVG: Curves are automatically generated, with sampling points that can be compensated and corrected. The curve automatically floats with gain, expands with detection distance, and moves with delay time. Displays the AVG curve of any aperture.
• AWS D1.1: Selecting this standard reduces manual calculations and improves detection efficiency.
• Curved surface correction.
• Crack height measurement.
• Gate magnify: Spreads the gate range over the entire screen width.
• Video recording and playback.
• Auto-gain function.
• Envelope: Simultaneous display of live A-scan at 60 Hz update rate and the A-scan envelope.
• Peak hold: Compare frozen peak waveforms to live A-scans to easily interpret test results.
• Peak mark: Capture and mark the peak in real time.
• Echo coding: Display 1–9 echo display areas in different colors to analyze defect position.
• A-scan freeze: Display freeze holds waveform and test distance data.
• B-scan display: Intuitively displays the defect shape of the workpiece for more intuitive detection results.

Real-Time Clock: The instrument clock keeps running, tracking the time continuously.

Communication: Two high-speed USB 2.0 ports with two selectable USB modes — U-DISK and U-BRIDGE. In U-DISK mode, channel configuration files, flaw report files, screenshot images, and recorded videos can be saved to a USB drive. In U-BRIDGE mode, the instrument exchanges data with DataPro software.

• Battery: Built-in large-capacity, high-performance lithium-ion battery with more than 12 hours of continuous working time and a typical recharge time of 4–6 hours.
• Knob: Operating adjustments are made easily and quickly using the rotary knob.
• Software upgrade: Software can be easily upgraded via USB drive without causing damage to the machine.

• Measuring Range: 0 to 15000 mm at steel velocity
• Pulse Repetition Frequency: 20 Hz to 2000 Hz
• Material Velocity: 1000 to 20000 m/s
• Dynamic Range: more than 40 dB
• System Linearity: Horizontal ±0.2% FSW; Vertical 0.25% FSH; Amplifier Accuracy ±1 dB
• Resolving Power: more than 40 dB
• Sensitivity Leavings: more than 50 dB (deep 200 mm, Φ2 flat-bottomed hole)
• Reject (Suppression): 0 to 80% full screen height
• Noise: less than 10%
• Gate Monitors: Two independent gates controllable over the entire sweep range
• Gain: 110 dB max in selectable resolution of 0.1, 1.0, 2.0, and 6.0 dB
• Bandwidth (Amplifier Bandpass): 0.2 to 20 MHz
• Pulse Displacement: more than 32 dB
• Display Delay: -20 to 3400 µs
• Probe Delay / Zero Offset: 0 to 99.99 µs
• Test Modes: Pulse echo, dual element, and thru-transmission
• Pulser: Tunable wave pulser
• Pulse Energy: 100V, 200V, 250V, 300V, 500V selectable
• Rectification: Positive half-wave, negative half-wave, full-wave, RF
• Units: Inch or millimeter
• Transducer Connections: BNC or LEMO
• Power Requirements: AC Mains 100–240 VAC, 50–60 Hz
• Operating Temperature: -10°C to 50°C; Storage Temperature: -30°C to 50°C