... high sensitivity geophone (seismic detector, seismograph, seismometer). Data processing, by means of energy-resolution and synthesis, wave-field ... Fi signal. Embed computer touch screen system and data processing software, real time analyze the detection geological area ... record length: ≤600ms13. Preamp gain: 40dB.We are leader in china. Mine intrinsically safe type seismograph, seismometer, geophone, ...