Table 2 Detailed description of the parameters AE System (PCI-2).

From: Investigation of the acoustic emission and fractal characteristics of coal with varying water contents during uniaxial compression failure

Number of sensors

Resonance frequency

Pre-amplification

Threshold level

Pre-trigger time

Sampling frequency

Recording length

8

300 kHz

40 dB

38 dB

256 points

2 MHz

2048 points

Back to article page