সামুদ্রিক ভূতাত্ত্বিক অন্বেষণ piezoelectric geophone Hydrophone HJ - 8C টাইপ

Underwater Hydrophone HJ - 8c type piezoelectric geophone Hydrophone Product features: 1 Special shell protection; 2 Working depth range of 100 meters; 3 High reliability, long service life; 4 High sensitivity output; Fast detailed description: The HJ-8 series products are on the early stage of piezoelectric geophone renewal. The main performance in the overall performance, and improved receiving oscillator. Early products using four receiver oscillator for receiving. Using