การสำรวจทางธรณีฟิสิกส์ geophone เครื่องดนตรี geophone ทดสอบ CBH-300

Geophysical Instruments Geophone tester CBH-300 hydrophone tester​ CBH-300 hydrophone tester is a special test instrument developed by our company newly hydrophone. The instrument adopts the microcomputer system of advanced, integrated with the main control unit, a signal acquisition unit, a sound box drive unit, a display unit, realizes miniaturization. It not only can predict the single point the sensitivity of the hydrophone, output high frequency but also for arbitrary