Simrad ES120-7G DATASHEET

TRANSDUCER

Simrad ES 120-7G

120 kHz Split-beam transducer

Introduction

The ES 120-7G is a split-beam transducer incorporat­ing 76 piezo-ceramic elements arranged in four quad­rants. Its compact housing is convenient for use with
portable echo sounders. The specications below are
valid when all four quadrants are connected in parallel.

Order number

KSV-112101

Technical specications

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

Beamwidth, circular.....................................7 deg ±1

Directivity:

D........................................................... 650 ±20%

DI=10logD .............................................28 ±1 dB

Equivalent two-way beam angle:

Ψ.......................................0.009 ± 20% steradain

10 logΨ.............................................. -20.5 ±1 dB

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

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

Angle sensitivity:

Phase angle/angle to target................................21

Impedance:

Nominal.....................................................5 ohms

Max. variation in |Z| .........................11 - 20 ohms

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

Transmitting response.............................185.0 dB ±2

re 1µPa per V

(855-164125 Rev.C)

Receiving sensitivity, open circuit ........ -186.5 dB ±2

re 1V per µPa

Electroacoustic efciency ......................... 0.70 ±0.20

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

Maximum continous power input ...................... 10 W

Maximum transducer depth ............................. 150 m

Cable length ....................................................... 20 m

Cable diameter ................................... 10.6 ±0.50 mm

Weight without cable ..........................................2 kg

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

Data

Installation

Manufactur er:

Simrad A S

Strandpromenaden 50

P.O.Box 111

N-3191 Ho rten

Telephone: [phone]