Simrad ES120-7DD DATASHEET

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ES 120-7DD

120 kHz split-beam transducer for deep water installations

Introduction

The ES 120-7DD is a split-beam transducer incorporating 76 piezo-ceramic elements distributed over four quadrants. It is designed for deep water installations with a maximum depth of 1500 m. The following specications are valid when all four quadrants are connected in parallel.

Order number

KSV-112417

Technical specications

Resonant frequency....................................... 120 kHz

Circular beamwidth............................................7 deg

Directivity:

D......................................................................650

DI=10 log D ................................................28 dB

Equivalent two-way beam angle:

ψ ...................................................................0.009

10 log ψ ..................................................-20.5 dB

Side lobes..........................................less than -15 dB

Back radiation ...................................less than -30 dB

Angle sensitivity (phase angle to target).................21

Impedance:

Nominal value .......................................... 15 ohm

Max. variation in |Z| ........................ 11 to 20 ohm

Max. variation phase angle.......................±30 deg

Transmitting response.....................................185 dB

(dB re 1µPa per V)

Receiving sensitivity open circuit..................-187 dB

(dB re 1V per µPa)

Electroacoustic efciency ....................................0.60

Maximum pulse power input .........................1000 W

Maximum continuous power input ....................10 W

Maximum transducer depth ........................... 1500 m

Cable with underwater connector ..................... 0.5 m

Weight without cable ...........................................6 kg

Storage temperature ..............................-20 to +70 °C

(855-164289 / Rev.B)

Data

Beam pattern

Admittance of one quadrant

Installation

Manufact ur er:

Simrad AS

Strandpr omenaden 50

P.O.Box 111

N-3191 Hor ten

Telephone: +47 33 03 40 0 0