Wuhan Zhongke Innovation Technology Co., Ltd.

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KW-4B Digital ultrasonic flaw detector

KW-4B digital ultrasonic flaw detector adopts advanced digital integration technology, it is easy to operate and has powerful fuction.Special technology for railway flaw detection integrated in the machine can meet the various detection needs of railway locomotive systems.

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KW-4B digital ultrasonic flaw detector adopts advanced digital integration technology, it is easy to operate and has powerful fuction.Special technology for railway flaw detection integrated in the machine can meet the various detection needs of railway locomotive systems.

→ TFT true color display, Chinese function hot key operation

→ High-performance, safe and environmental friendly lithium battery, modular plug-in type

→ High-speed USB interface, fast transmission

→ Flaw detection channels: 30 groups, transverse wave flaw detection, longitudinal wave flaw detection, small angle flaw detection, surface wave flaw detection

→ Storage capacity: 1000 pieces

→ Crack height measurement: The diffraction wave method is used to measure the crack height

Transmit parameters

The Form of PulseNegative square wave pulse
Transmitting Pulse Voltage600V
Pulse Leading edge<10 ns
Pulse Width30ns-1000ns continuously adjustable (adjustable step 5ns)
Impedance Matching200Ω、500Ω


Receive Parameters

Sampling Frequency / Bits200MHz/10bits
Sampling Depth512
Signal Bandwidth0.5MHz-15MHz
Repeatition Frequency60Hz-200H
Attenuator Accuracy<±1dB/12dB
Gain Range110dB/0.1dB、2dB、6dB (Fully automatic adjustment)
Scanning RangeZero interface incidence -12000mm steel longitudinal wave
Sound Speed Velocity Range(100 - 20000) m/s
Dynamic Range≥30dB
Vertical Linearity Error≤ 3%
Horizontal Linearity Error≤ 0.1%


Comprehensive Performance

Resolution≥30dB
Surplus sensitivity≥60dB(Φ2×200mm)
Detection MethodFull detection, positive detection, negative detection, RF
Working MethodSingle-crystal flaw detection, dual-crystal flaw detection


Instrument parameters

Instrument Size200 x 138 x 60 (mm)
Instrument Weight1.5 kg (including battery)
Screen Size5"
Screen Resolution640×480
Power Supply, BatteryDC (DC8V/1.5A)
Battery 7.4V/8000mAh
Battery LifeWork continuously for more than 6 hours (powered by lithium battery)
InterfaceUSB2.0, OTG
Ambient Temperature(-10-40)℃ (Reference value)
Relation humidity(20-95) % RH


Application

Dedicated for railway locomotive depot, which can be applied to the detection of wheel hubs, axles and other components

None

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