HS 811 TOFD Detector
Product Overview
The HS 811 TOFD detector is a dedicated ultrasonic time-of-flight diffraction inspection unit upgraded from the original HS810 model. It retains the HS810’s advantages of stability, easy operation and high practicality while delivering richer expandable functions.
Technical Parameters
| Parameter Category | Parameter Name | Specifications |
| Pulse & Receiving Parameters | Pulse Type | Negative Square Wave Pulse |
| Pulse Rise Time | ＜10 ns | |
| Pulse Width | Continuously adjustable from 15~1200 ns with 5 ns step | |
| Impedance Matching Specifications | 25Ω, 500Ω | |
| Interface Support | Supports simultaneous connection of multiple probes | |
| Sampling Frequency / Bit Depth | 200 MHz / 10 bit | |
| Sampling Depth | 512 | |
| Pulse Repetition Frequency | Adjustable 100~1000 Hz | |
| Equivalent Input Noise | ＜60 nV/√Hz | |
| Scan Range | Steel longitudinal wave, 0 interface to 14000 mm | |
| Sound Velocity Range | 300~20000 m/s | |
| Attenuator Accuracy | ＜1 dB / 12 dB | |
| Comprehensive Performance | Resolution | ＞36 dB |
| Surplus Sensitivity | ＞60 dB (Φ2×200mm test block) | |
| Detection Waveforms | Full-wave, positive half-wave, negative half-wave, RF wave | |
| Imaging Modes | A-scan, B-scan, C-scan | |
| Waveform Averaging Times | 1~16 adjustable gears | |
| Linear Scan Range | 0~40000 mm, supports auto scrolling |