The KW-4C digital ultrasonic flaw detector has passed the technical quality approval of the China Academy of Railway Sciences, and has built-in various types of locomotive and rolling stock detection technology; it can provide A/B scanning mode, one machine for multiple purposes; it can connect to the Internet through Wifi to achieve "flaw detection cloud detection" ; Resistive touch screen, oil-proof and waterproof, touch sensitive; GSM positioning, real-time remote positioning through mobile phone APP; software customization, upgrades are more efficient.
→ It can be connected to the Internet via Wifi to realize "Cloud flaw detection"
Resistive touch screen, oil-proof and waterproof, touch sensitive
→ Full-digital, true-color display, leading domestic application technology
→ Integrating two functions of ultrasonic testing and thickness measurement in one machine
→ Automatically calibrate the probe zero-point and test the oblique probe K-value (refraction angle)
→ Longitudinal crack height measurement function
→ With true color B-scan function. Can perform online and offline atlas analysis and measure the size of defects (suitable for some models)
Transmit parameters
| The Form of Pulse | Negative square wave pulse |
| Transmitting Pulse Voltage | 200V - 400V |
| Pulse Leading edge | <10 ns |
| Pulse Width | 30ns-1000ns continuously adjustable (adjustable step 5ns) |
| Impedance Matching | 200Ω 、500Ω |
Receive Parameters
| Sampling Frequency / Bits | 400MHz/10bits |
| Sampling Depth | 512 |
| Signal Bandwidth | 1MHz-15MHz |
| Repeatition Frequency | 15Hz-1kHz |
| Attenuator Accuracy | <+1dB/12dB |
| Gain Range | 120dB |
| Scanning Range | Zero interface incidence -12000mm steel longitudinal wave |
| Sound Speed Velocity Range | (300 - 20000) m/s |
| Dynamic Range | ≥36dB |
| Vertical Linearity Error | ≤ 3% |
| Horizontal Linearity Error | ≤ 0.1% |
Comprehensive Performance
| Resolution | ≥36dB |
| Surplus sensitivity | ≥65dB(Φ2×200mm） |
| Detection Method | Full detection, positive detection, negative detection, RF |
| Working Method | Single-crystal flaw detection, dual-crystal flaw detection |
Instrument parameters
| Instrument Size | 266×164×48 (mm) |
| Instrument Weight | 1.25Kg (including battery) |
| Screen Size | 5.7" |
| Screen Resolution | 640×480 |
| Power Supply,Battery | DC (DC12V/3.34A)
Battery 7.4V/10000mAh |
| Battery Life | Work continuously for more than 8 hours (powered by lithium battery) |
| Interface | WIFI, USB2.0, VGA |
| Ambient Temperature | (-10-40)℃ (Reference value) |
| Relation humidity | (20-95) %RH |
Application
Transverse wave flaw detection, longitudinal wave thickness measurement
