HYDROPHONE PRODUCT GUIDE
General Description
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 government and industry applications. The
hydrophone/preamplifier assembly consists of piezoelectric 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
conditioning 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 DOD-STD-1376A Type I material.
With end caps, the enclosed cylinder forms a small pressure vessel which
houses the preamplifier assembly. This "air backed" design is capable of
withstanding pressures to 10,000 psi.
The preamplifier itself is a transconductance 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 3-wire voltage mode
amplifiers are also available.
Completed assemblies are encapsulated in polyurethane and pressure cycled
to operating depth prior to calibration.
REFTEK-17
High Tech, Inc. is the exclusive worldwide manufacturer of the REFTEK-17
calibrated hydrophone pursuant to the license agreement with Refraction
Technology, Inc.
- Customer specified connectors
- Complete acoustic test & calibration
- Custom mounting configurations
- Calibration injection port
- Acceleration canceling configuration
- Dual sensitivity
- Low power (30 mW)
- 3-wire voltage mode amplifiers
Last updated: 10 May, 1999.