intelligent digital ultrasonic flaw detector

FOB Reference Price:Get Latest Price
US $1,800-3,000 / Set | 1 Set/Sets (Min. Order)
Supply Ability:
10 Set/Sets per Day
Report Suspicious Activity
Quick Details
Place of Origin:
Beijing, China (Mainland)
Brand Name:
Model Number:
Measuring range:
0 to 6000 mm, at steel velocity
Resolution Accuracy:
Horizontal: +/-0.2% FSW ,Vertical: 0.25%
Communication storage:
USB2.0;100 groups of flaw detector
Working time:
More than 8 hours
Packaging & Delivery
Packaging Details
carton box
Delivery Time
within one day


Product Overview

Based on ultrasonic principle, digital ultrasonic flaw detector MFD350B with 320*240 TFT LCD, it can test, orient, evaluate and diagnose various flaws such as crack, lard, air hole in workpiece’s interior swiftly and accurately without any destruction. It can be used in Laboratory as well as in engineering filed. With range of 0-6000mm, it can meet the requirement for general defect inspection in manufacturing industry, metallurgical industry, metal processing industry, chemical industry and so on. Low power design with large capacity and high performance lithium battery module, it can be long standby for months. High quality with low price, it is the first choice for the practical economic model for ultrasonic testing equipment.

Technical Parameters

Range: 0 to 6000 mm, at steel velocity

Material Velocity: 300 to 15000m/s

Display Delay: -20 to 3400 µs

Probe Delay/Zero Offset : 0 to 99.99µs

Sensitivity Leavings: >60dB (flat-bottomed deep hole 200mmdiameter2)

resolution : >40dB (5P14)

Noise Level: ≤ 8%

Test Modes: Pulse echo, dual element and thru-transmission

Pulse Repetition Frequency ranges from 10 Hz to 1000 Hz

Pulse Energy: Low, Medium and High spike pulse.

Damping: 100, 200, 400 ohms

Bandwidth (amplifier bandpass ): 0.2 to 15 MHz

Gate Monitors: Two independent gates controllable over entire sweep range

Rectification: Positive halfwave, negative halfwave, fullwave, RF

System Linear Deviation:Horizontal: +/-0.2% FSW, Vertical: 0.25% FSH, Amplifier Accuracy +/-1 dB.

Reject (suppression): 0 to 80% full screen height

Units: Inch or millimeter

Transducer Connections: BNC or LEMO

Power Requirements: AC Mains 100-240 VAC, 50-60 Hz

Overall Dimensions: 263H×170W×61D mm

Relative Humidity: (20 ~ 95)% RH

Power Supply: DC 9V

Operating Temperature: -10℃ to 50

Storage Temperature: -30℃ to 50

Note: All above indicators are got with 2.5MHz probe and full wave detecting method.





Hi-resolution (320×240 pixels) multi-color TFT LCD with 4 user-selectable brightness control provides high contrast viewing of the waveform from bright, direct sunlight to complete darkness.

The hi-resolution multi-color TFT LCD display with fast 60 Hz update gives an analog look to the waveform providing detailed information that is critical in many applications including nuclear power plant inspections.


Up to 6000 mm in steel. suitable for use on large work pieces and in high-resolution measurements.

Real Time Clock

The instrument clock keeps running tracking the time.


High speed USB2.0 port.

The optional DataPro software helps manage and format stored inspection data for high-speed transfer to the PC. Data can be printed or easily copied and pasted into word processing files and spreadsheets for further reporting needs. New features include live screen capture mode and database tracking.


Internal rechargeable Li-ion battery pack rated 7.2V at 8800 mAh

8 hours nominal operating time depending on display brightness

8-10 hours typical recharge time


Operating adjustments are easily and quickly made using the rotary knob.


Pulse Energy selectable among Low, Medium and High.

Pulse Repetition Frequency adjustable from 10 Hz to 1 KHz in 1 Hz increments.

Damping selectable among 100Ω,200Ω and 400Ω for optimum probe performance

Test Modes include Pulse echo, dual and thru-transmission


Sampling:10 digit AD Converter at the sampling speed of 160 MHz

Rectification:Positive Halfwave, Negative Halfwave, Fullwave and RF

Analog Bandwidth: 0.2MHz to 15MHz capability with selectable frequency ranges (automatically set by the instrument) to match probe for optimum performance.

Gain:0 dB to 110 dB adjustable in selectable steps 0.1 dB, 1 dB,2 dB, 6 dB, and locked.


Two fully independent gates offer a range of measurement options for signal height or distance using peak triggering.

The echo-to-echo mode allows accurate gate positioning for signals which are extremely close together.

Gate Start: Variable over entire displayed range

Gate Width: Variable from Gate Start to end of displayed range

Gate Height: Variable from 0 to 99% Full Screen Height

Alarms: Threshold positive/negative


Memory of 100 channel files to store calibration set-ups

Memory of 1000 wave files to store A-Scan patterns and instrument settings.

All the files can be stored, recalled and cleared.


Semiautomatic two point calibration: Automated calibration of transducer zero offset and/or material velocity

Flaw Locating:Live display Sound-path, Projection (surface distance), Depth, Amplitude,

Flaw sizing: Automatic flaw sizing using AVG/AVG or DAC, speeds reporting of defect acceptance or rejection.

Digital Readout and Trig. Function: Thickness/Depth can be displayed in digital readout when using a normal probe and Peam path, Surface Distance and Depth are directly displayed when angle probe is in use.

Both the DAC and the AVG method of amplitude evaluation are available.

Curved Surface Correction feature

Crack Height Measure function

Weld figure feature

Magnify gate:spreading of the gate range over the entire screen width

Video Recording and play

Auto-gain function

Envelope: Simultaneous display of live A-scan at 60 Hz update rate and envelope of A-scan display

Peak Hold: Compare frozen peak waveforms to live A-Scans to easily interpret test results.

A Scan Freeze:Display freeze holds waveform and sound path data

B Scan display feature

AWS D1.1 feature