Ultrasonic Product

GCT-8C Rail Ultrasonic Flaw Detector



GCT-8C Rail Ultrasonic Flaw Detector is a brand new digital barrow-style ultrasonic equipment of flaw detection. 

It is used to detect all kinds of flaws in rail materials ranged from 43kg/m-75kg/m. It is a new type of practical, dependable instrument of rail flaw detection.
This machine fits in with the Railway Field Standard of People’s Republic of China TB/T 2340---2000 Technological Terms and Conditions of Multicenter A Scope Rail Ultrasonic Flaw Detection Instrument.
This machine mainly includes one main machine, probe and water tank. The above three parts are installed on the handcart.

Detecting Channels

9 channels

Working Frequency


Repetition rate

400 Hz (each channel)

Detection range

4.0 - 200±4mm for 43kg/m and 50kg/m rail,
0-250±5mm for 60kg/m and 75kg/m rail

Gain range

0 - 80 dB

Sensitivity Leavings

TB/T 2340---2000 standard

Dynamic range

≥30dB (restraining small), 2~6dB (restraining big)

Horizontal linear error


Vertical linear error


Attenuation error

less than 1dB per 20dB

Alarm Threshold level

>50% (A-I channels reflex alarm),

<30% (0 degree or double 45 degrees channel penetration alarm)

Alarm frequency

12.70 degree channel: 250Hz(20 degree Angle oblique ), 750Hz(direct);

37 degree channel:500Hz;

0 degree channel: 1000Hz.

Probe lapse alarm:2000Hz,

over rate alarm 2000Hz

Number of files that can be saved

automatic storage file can save 60 days. Manual storage file can be 2000 pieces

Time Dynamic pulse time

≥60 minutes

Operation voltage


Power consumption

≤8W. Machine can work about 10 hours continually

Operation temperature

-30 to 50°C

Tank size



25kg (without couplant)



E-mail: zhongyi@zhongyi-ndt.com

Tel: +86- 415-6133688

Fax : +86- 415-6133688

Work Time: 9AM--5PM (GMT+8)

Address: No. 5 Tong Xing Rd ,Zhen An Distr.

Dandong, 118011 China

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