PXDAE digital acoustic emission instrument of popular edition is PXDAQ12054 acquisition card, also called 9812 card. Because the sampling rate of the card for per channel is only 5 M, under the condition of ensuring the waveform is not lost, 8 channel acquisition at the same time can only be collected highest frequency of 1.25 M of the acoustic emission signal, unable to collected 1 KHZ ~ 3 MHZ full waveform signal.
But PXDAQ12054 acquisition card has very high reliability and cost performance, and has a number of users in the colleges and universities, so this plan is the most economical solution of acoustic emission test.
under the condition of 9812 CARDS, Users can just buy PXR acoustic emission sensors, PXPA preamplifier, PXASC (single channel)/PXMA (four channels) and acoustic emission signal conditioners PXAES ae software system can be set up 1 ~ 4 channel acoustic emission system.
Of course, the user can also insert more than an acquisition card as shown in figure 8, 12, 16, 20, 24, 28, 32 channels multi-channel acoustic emission system.
Due to the sampling rate per channel is only 5 m, on the premise of guarantee the waveform is not lost we do strict test, the test shows that the system maximum data passing rate in the 75 MB/s, which is 600 megabits per second (1 byte = 8 bit), and the collection of the number of channels and signal frequency of the corresponding relations between the following:
1, collection channel number 4 at the same time, to the acoustic emission signal collecting the highest signal frequency is 1.8 MHz, waveform is not lost;
2, at the same time, acquisition channel number is 8, to the acoustic emission signal collecting the highest signal frequency is 1.25 MHz, waveform is not lost;
3, at the same time, acquisition channel number is 12, collected acoustic emission signals of the highest frequency of 1 MHZ, waveform is not lost;
4, at the same time, acquisition channel number is 16, to the acoustic emission signal collecting the highest signal frequency is 820 KHZ, waveform is not lost;
5,at the same time acquisition channel number is 20, to the acoustic emission signal collecting the highest signal frequency is 650 KHZ, waveform is not lost;
6, at the same time, acquisition channel number to 24, to the acoustic emission signal collecting the highest signal frequency is 500 HZ, waveform is not lost;
7, at the same time, acquisition channel number is 28, to the acoustic emission signal collecting the highest signal frequency is 400 KHZ, waveform is not lost;
8, at the same time, acquisition channel is 32, collected acoustic emission signals of the highest frequency of 300 KHZ, waveform is not lost;
We do not recommend in metal pressure vessel used in popular version of the acoustic emission testing system more than 32 channels, from common metal materials acoustic emission signal frequency on 100 KHZ to 300 KHZ range.
We do not recommend in metal pressure vessel used in popular version of the acoustic emission testing system more than 32 channels, from common metal materials acoustic emission signal frequency on 100 KHZ to 300 KHZ range.
PXDAE of Popular edition is entry level acoustic emission system, but PXAES for PXDAE compatible software and other versions of the PXAES also keep update and upgrade. The latest version is now on August 12, 2009, issue of PXAES for PXDAE compatible V3.6. Software function in detail please consult PXAES software related introduction.