Description
Overview
GAOTek NDT Ultrasonic Flaw Detector is an advanced digital ultrasonic flaw detector featuring a multi-color TFT LCD and a host of new features to meet challenging inspection requirements. It combines powerful flaw detection and measurement capabilities, extensive data storage, and the ability to transfer detailed inspection data to the PC via its high-speed USB port. The instrument incorporates many advanced signal processing features including a 15MHz RF bandwidth to permit testing of thin materials, narrowband filters to improve signal to noise in high gain applications, a spike pulser for applications requiring higher frequencies, and a tuneable square wave pulser to optimize penetration on thick or highly attenuating materials. The instrument can be widely used in locating and sizing hidden cracks, voids, disbands, and similar discontinuities in welds, forgings, billets, axles, shafts, tanks and pressure vessels, turbines, and structural components.
Technical Specifications
| Range | 0 in to 393.66 in (0 mm to 9999 mm), at steel velocity |
| Material Velocity | 1000 m/s to 9999 m/s |
| Display Delay | -20 µs to 3400 µs |
| Probe Delay/Zero Offset | 0 µs to 99.99 µs |
| Sensitivity | 110 dB max in selectable resolution 0.1 dB, 1.0 dB, 2.0 dB, 6.0 dB and locked. |
| Test Modes | Pulse echo, dual element and thru-transmission |
| Pulser | Tuneable Square Wave Pulser |
| Pulse Repetition Frequency Ranges | From 10 Hz to 1000 Hz |
| Pulse Energy | 200 V, 300 V, 400 V, 500 V, 600 V selectable |
| Bandwidth (Amplifier Bandpass) | 0.5 MHz to 15 MHz |
| Gate Monitors | Two independent gates controllable over entire sweep range |
| Rectification | Positive half wave, negative half wave, full wave, RF |
| System Linearity | Horizontal: ± 0.2% FSW, Vertical: 0.25% FSH, Amplifier Accuracy ±1 dB |
| Reject (Suppression) | 0 % to 80 % full screen height |
| Transducer Connections | BNC or LEMO |
| Power Requirements | AC Mains 100 VAC to 240 VAC, 50 Hz to 60 Hz |
| Operating Temperature | 14 °F to 122 °F (-10 °C to 50 °C) |
| Storage Temperature | -22 °F to 122 °F (-30 °C to 50 °C) |