Ultrasonic Rail Flaw Detector GT-20
Product Introduction
Rail Flaw Detector GT-20 has an innovative design of the third generation of railway dedicated fully digital, portable hand push rail ultrasonic flaw detection equipment.
The equipment fully meets the requirements of TB/T 2340-2012 "Rail Ultrasonic Flaw Detector" standard issued by the Ministry of Railways. It is suitable for flaw detection of 43kg/m ~ 75kg/m rail and can efficiently detect various defects of rail head, rail waist and rail bottom. It is suitable for various rail detection applications such as general railway, high-speed railway and subway.
The instrument adopts ultrasonic host + operation terminal mode and wireless WIFI connection to improve customer operation experience and expand the Internet + function of the instrument, which can realize man-machine detection separation, online and offline real-time storage of data, GPS positioning, data cloud storage and other functions. And we can customize our own ultrasonic operating terminal according to the needs of customers.
Environmental Suitability
Compact structure, sturdy and durable, anti-shock and interference-resisting, staying in good condition under 15℃-45℃, IP65, applicable to railway environment.
Integrated probe holder for easy uninstallation, raincoats for the devices, 8+hours battery life, and monobloc tank of large capacity meant for loading water and depositing tools, ensuring lasting outdoor work.
Operational Advancement
Split structure – “client (tri-proof tablet computer) + server (UT instrument)” via WIFI LAN or even projected to other “T” s such as mobile phone, highly portable and fashionable.
“9+1” channels of probes in Turn shooting in the direction respectively of 0, 37 and 70 degrees to cover all critical parts of the rail with the “+” channel reserved for verification, to perfect a “railway run”.
Data Accessibility
Provided with replay app to make off-line operation such smart replay, event filtering, statistics, searching, printing and exporting on the saved files.
Cloud storage allows the users to avail themselves anywhere of the resources uploaded to cyber space, especially for OS updating.
Specification
|
LCD |
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|
Type |
Tri-Proof Touch Screen (capacitive and handwriting supportive) |
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Pixel Resolution |
1280x800 |
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Connector |
|
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Power Supply |
Charger; DC 12V; DC 5V |
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Data Dump |
USB2.0 |
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Com |
WIFI 802.11 a/b/g/n; LAN 100Mbps; BT 4.0 (Bluetooth) |
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Probe Cable |
BNC |
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Receiver |
|
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Gain |
0-80dB |
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Mode |
P/E (Pulse-Echo, Single Element) |
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Bandwidth |
1.5-3MHz/ch |
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Rectification |
Positive/Negative/Full Wave/RF |
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Vertical Linearity |
≤15% |
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Horizontal Linearity |
≤1% |
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D/A Properties |
For SW Probe (SDHs of the same size ant different BOs) and LW Probe (LFBs at different BPs), the echo amp difference △W-LW (0°)/SW (37°): △W≤12dB (20mm to where strongest) △W≤8dB (where strongest to 150mm) SW (70°): △W≤12dB (10mm-70mm) |
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SNR |
l LW Probe (0°): Sensitivity Surplus≥24dB (LFB of GTS-60, 80% amp) SNR≥16dB l SW Probe (37°): Static sensitivity surplus≥22dB (with the echoes of a screwhole and a 37° slanting 3mm-crack of GTS-60 both at 80% amp) SNR≥8dB l SW Probe (70°): Sensitivity Surplus≥20dB (φ4mm FBH of GTS-60, 80% amp) SNR≥10dB |
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Working Voltage Affection on the Echo Amplitude and Sensitivity |
Within the rated working voltage; no obvious variation of the gate start and the noise level; the shifts of echo amplitude (△Nd) and that of sensitivity (△Sd) are less than 1dB |
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Attenuator Error |
Within ±1dB per 12dB |
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Range |
Manual or auto according to the set rail type |
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Sensitivity Surplus |
l Probe (0°): ≥36dB (80% amp, LFB X 110 – WGT-3 block) l Probe (37°/70°): ≥40dB (80% amp, SDHφ3x65-WGT-3 block) |
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Dynamic Range |
≥16dB with the least “reject” and 2dB-6dB with the most reject |
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Signal Resolution |
All artificial flaws on GTS-60 test block except 15°lower crack can be detected by 0°, 37° and 70° probes and indicated by the alarm |
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Reject |
No/Great |
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Blockage |
≤20mm |
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Response Duration |
≤5ms |
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Sampling Error |
The jump of a signal from min to max is less than ±5 of the screen’s full-level |
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Reject Affection |
The amplitude difference between two echoes varies within 2db if they are 10dB±2dB different |
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Gate |
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Gate Adjustment |
Start; Width; Threshold |
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Alarms |
Loss/Excess/Screwhole Dual-Echo/Delay; Sound/LED |
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Measurement |
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Readouts |
Beampath; Horizontal; Depth; Amplitude |
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Channel Configuration |
l 10 Channels: 9 of which for detection and 1 for verification; l Probe Arrangement: 4 combo probes 1 angle probe ranging from 2MHz-2.5MHz (pulse-echo) 0°+37°(1); 70°+37°(1); 70°+70°(2) l Targeted Areas: Two 70° probes for left side of the rail head; Two 70° probes for center part of the rail head; Two 70° probes for right side of the rail head; Two 37° probes for the rail web (screwhole crack and other types of slant crack) and 0° probe for rail head, rail web, rail foot and horizontal cracks on the screwhole |
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Mode |
A/B/A+B |
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B-Scan Precision |
2mm by X-axis/Y-axis |
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Encoder Precision |
2mm |
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Inspection Rate |
Max 5.0km/h |
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Gain Curve |
Adjustable Accordingly (8 pts) |
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PRF |
400Hz/ch |
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Compliance |
|
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Dimension (LxWxH) |
Server: 94x222x225 mm Entire Set: 780x290x106 mm |
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Weight |
Trolley 24kg; Server (Instrument) 2.4kg; Battery 830g; Tablet PC 730g; Probes (5 pcs) 1.4kg |
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Temperature Ambient |
-15℃-45℃ |
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Capacity |
|
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Memory |
Full-Path 50km |
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Battery Life |
≥8h |
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Water Load |
≥20L |
Application Software
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