Simrad ES70-11 - DATASHEET REV B Datasheet

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Simrad ES 70-11

70 kHz Split-beam transducer

(855-164126 Rev.B)

Introduction

The ES70-11 is a split-beam transducer in a stream­lined housing. It can be mounted outside the vessel
hull or on a towed foil. The transducer has 36 piezo­ceramic elements arranged in four quadrants. It can
also be used as a single-beam transducer by con­necting the four quadrants two and two, rst in par­allel and then in series. The specications below
are valid when wired as a single-beam unit.

Order number

KSV-110280

Technical specications

Resonant frequency......................................... 70 kHz

Beamwidth, circular...................................11 deg ±1

Directivity:

D........................................................... 250 ±20%

DI=10logD .............................................24 ±1 dB

Equivalent two-way beam angle:

Ψ.......................................0.022 ± 20% steradain

10 logΨ.............................................. -16.5 ±1 dB

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

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

Angle sensitivity:

Phase angle/angle to target.............................13.7

Impedance:

Nominal...................................................60 ohms

Max. variation in |Z| .........................45 - 80 ohms

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

Transmitting response................................175 dB ±2

re 1µPa per V

Receiving sensitivity, open circuit ........... -181 dB ±2

re 1V per µPa

Electroacoustic efciency ......................... 0.50 ±0.10

Maximum pulse power input ...........................800 W

Maximum continous power input ...................... 40 W

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

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

Cable diameter ..................................... 10.6 ±0.5 mm

Weight without cable in water ............................8 kg

Weight without cable in air ...............................12 kg

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

Manuf acturer:

Simra d AS

Strandpromenad en 50

P.O.Box 111

N-3191 Horten

Teleph one: [phone]

Data

Installation

Junction box and additional

cable can be supplied by

Simrad