Hitachi, Ltd.
Founded over 100 years ago, Hitachi is a recognized global technology leader with over 303,000 em……...

The MassaSonic® Model TR-1055 series of underwater transducers were developed for the oceanographic sector for high-power, deep-water transponder applications spanning the frequency range from 8 to 16 kHz.
The transducers use lead zirconate-titanate as the active element contained inside an oil-filled butyl rubber housing, attached to a hard coated (anodic) aluminum mounting flange.
Two types of mounting arrangements are provided to allow coupling the transducer either to a bulkhead (Models TR-1055C and TR-1055F) or a pipe flange (Model TR-1055A). A high pressure seal is provided using an “O” ring located in the transducer flange.
The Model TR-1055 transducers will operate at depths beyond 20,000 feet. A special high pressure rubber cable and flange assembly is provided for mounting the TR-1055C flange when operation with an attached cable is preferred.
Key Features
Broadband - From 8 to 16 kHz
High power - Up to 1 kW
High pressure - Operating depth is over 20,000 ft (6100m)
Mounting is available for either a bulkhead or a pipe flange
Applications
The main applications of the Massa Model TR-1055 transducers are as follows:
Underwater communication
Transponders
Under water homing and docking
Underwater hazard avoidance
Underwater acoustic positioning
Mark and locate deep sea equipment
Specifications
The key specifications of the MassaSonic® Model TR-1055 series are as follows:
| SPECIFICATIONS(Nominal at 12 kHz) | |
|---|---|
| Power Rating | 1 kW |
| Source Level / Watt | 169 dB re 1 µPa @ 1 m |
| Transmitting Response / Volt | 133 dB re 1 µPa @ 1 m |
| Transmitting Response / Amp | 193 dB re 1 µPa @ 1 m |
| Receiving Response | -183 dBV / 1 µPa |
| Bandwidth | 8 - 16 kHz |
| Impedance | 1000 Ohms |
| Beam Angle | 40° Conical @ -3 dB |
| Directivity | Hemispherical, Conical |
| Operating Depth | Exceeding 20,000 ft (6100m) |
| Mounting TypeTR-1055ATR-1055CTR-1055F | Pipe Flange (10 lbs./4.5 kg)Bulkhead (6.5 lbs / 3.5 kg)Bulkhead (6.5 lbs / 2.5 kg) |
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