The HTI series of hydrophones are precision, low noise, deep water acoustic sensors. Over 3000 units have been manufactured and deployed with excellent results in vernment and industry applications. The hydrophonepreamplifier assembly consists of iezoelectric ceramic cylinders which form the hydrohone active acoustic element. The preamplifier is mounted inside the ceramic cylinder and interfaces the active element to the signal electronics via an underwater connector. Each model features an integral Faraday shield for EMI rejection and improved crosstalk performance.The ceramic cylinders are radially polarized DODSTD1376A Type I material. With end caps, the enclosed cylinder forms a small pressure vessel which houses the preamplifier assembly. This air backed sign is capable of withstanding pressures to 10,000 psi.The preamplifier itself is a nsconductance amplifier design which eliminates the need for separate power and signal conductors. Preamplifier power consumption is less than 150 mW based upon 24 VDC. The supply voltage range is from 10 to 40 VDC. Conventional 3wire voltage mode amplifiers are also availablepleted assemblies are encapsulated in polyurethane and pressure cycled to operating depth prior to calibration.

Telephone: (228) 868-6632
Fax: (228) 868-6645
Website: http://home.att.net/~hightechinc/