Rugged piezoelectric crystal
Crystal capacitance 13,000 pF
Multiple water blocks
0 to 35C temperature
The Geo Space MP-8D and MP-8F are used as marine energy source monitors. These models of the MP-8 series of hydrophones have a rugged piezoelectric crystal in cylindrical form as the basic sensing element. A polyurethane boot completely surrounds the internal elements and provides a cable water block.
The MP-8D is suitable for driving either low or high impedance amplifier loads. It includes a matching transformer which has a voltage step down ratio of 13:1.
The MP-8F has no transformer and is suitable for direct coupling to high impedance amplifiers. Output is 13 volts per bar.
MP-8D MP-8F
Voltage Sensitivity } 1 dB : 1 V/bar (MP-8D), 13 V/bar (MP-8F)
Charge Sensitivity : 169,000 pCmb/bar (MP-8F)
Crystal Capacitance : 13,000 pF
Crystal Mechanical Resonant Frequency : 40 kHz
Operating Temperature : 0 to 35C
Dimensions:
Length : 7.4 in (18.8 cm, MP-8D), 4.3 in (10.92 cm, MP-8F)
Diameter : 1.3 in (3.30 cm, MP-8D) 1.3 in (3.30 cm, MP-8F)
Weight : 14 oz. (397 g, MP-8D), 11 oz. (312 g, MP-8F)
Specifications are subject to change without notice.