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UMT-12 Ultrasonic PC Card Key Benefits
The UMT- 12 ISA board is an advanced card converting PC computer into the sophisticated UT flaw detector with elaborate functions and software. Equipped with high voltage square pulser, card provides excellent accuracy and performance. The software package includes standard and advanced options like signal averaging and FFT functions. Moreover, the user has the ability to modify software for the specific experiment or measurement.
Technical Specifications TRANSMITTERSquare Wave Pulser: Width: 40 to 550 ns, 2 ns steps; Voltage: 50 to 300 V, 1 V steps; Rise time: 20 ns at 50 W .Damping: fixed 50 W or cont. variable 50 to 500 W . Repetition frequency (PRF): A/D mode software controlled ,free run mode 160....2000 Hz, in 1 Hz steps. Transducers mode: single T/R mode or two transducers. RECEIVER Gain: 0...60 dB , adlustable in 0.25 dB steps.Bandwidth: 50 kHz to 10 MHz,(optionally 50 kHz to 20 MHz). Additional gain of TCG amplifier: 0 to 2 0 dB, (optionally 0 to 40 dB Four filtering value: zero, short, medium and long. Blockade range: 0.4 mm ... 3 m in 0.4 mm steps. Non-linearity: HF output- 0.2 dB, LF output- 0.3 dB. Amplifier gain drift, long term: 0.1 dB for 8 hr operation. Additional scope outputs: signal 0 ... 2 Vpp, sync. delay 0.2 ms ... 3 ins. Suppression: 0 to 80 %, "classic" and "constant amplitude". MEASUREMENT GATE Position and duration range: 0.4 mm to 3 m, in 0.4 mm steps.Automatic amplitude measurement: 0 to 2 V, in 0.01 steps. Distance (time) measurements: resolution 0.04 mm,(14 ns) - at a set threshold within the gate; - with a selected threshold (0 to 100% display height); - with a constant fraction threshold (0 .1 to 0.9 pulse height). Acoustic alarm: with an autonomous logic and an independent threshold set (5 to 95 % of display height). ANALOGUE I DIGITAL CONVERSION Resolution: 8bit.Sampling frequency: 72 MHz (special version 88 MHz). Sampling buffer: 8 to 32 KB. Material Range: continuously from 0.1 mm to 3 m (for steel, longitudinal wave), in steps: 20, 40, 80,160, 320 and 640 mm. Time (distance) scale non-linearity: 0.001 |
Copyright © 1999 Western NDE & Engineering Ltd.
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