Simrad ES38DD DATASHEET

Simrad ES38DD

-10

-20

-30

-40

(CD017014B)

0

46

44

43

41

39

38

37

36

42

35

40

-10

-8

-6

-4

-2

0

2

4

6

8

10

5

10 15 200

B (mS)

G (mS)

(CD017014A)

TECHNOLOGY FOR SUSTAINABLE FISHERIES

www.simrad.com

Split-beam echo sounder transducer

Introduction

The Simrad ES38DD is a split­beam echo sounder transducer
incorporating 88 Tonpilz elements
distributed over four quadrants. The

transducer is lled with liquid, and
may thus be used at water depths
down to 1500 meters.

The Tonpilz elements used in
the ES38DD are identical to those

found in the ES38B transducer, and
therefore generate similar data with

the exception of higher back radiation

and lower efciency.

Order number

KSV-113392

Specications

The specications provided are
valid when all four quadrants are
connected in parallel.

• Resonant frequency: 38 kHz

• Circular beamwidth: 7 deg

• Directivity D: 630

• DI = 10 log D: 28 dB

• Equivalent two-way beam

angle Ψ: 0.009

• 10 log Ψ: -20.5 dB

• Side lobes: Less than -14 dB

• Back radiation: Less than -14 dB

• Angle sensitivity: 21.9

• Nominal impedance: 15 ohm

• Max. variation in |Z|: 11 to 20 ohm

• Max. variation in

phase angle: ± 30 deg

• Transmitting response:

183 dB re 1μPa per V

• Receiving sensitivity, open

circuit: -179 dB re 1V per μPa

• Electro-acoustic efciency: 0.40

• Max. pulse power input: 4000 W

• Max. continuous input: 40 W

• Max. transducer depth: 1500 m

• Cable length, four pairs: 1 m

• Connector: 8-pin Burton female
(5501-2008)

• Cable diameter: 11 mm

• Weight: 58 kg

• Storage temperature: -20° to 70°C

45

o

ø450

SIMRAD FORWARD

FORWARD

ø11

ø22

12

8

37

ø424

ø480

ø225

172

(CD017014C)

ES38DD Outline dimensions

Kongsberg Maritime AS
Strandpromenaden 50
P. O.Box111
N-3191 Horten,Norway

Simrad

Telephone: [phone]
Telefax: [phone]

[e-mail]

www.simrad.com

(Note that the drawing

is not to scale.)

Simrad ES38DD Transducer

ES388DD Connections

855-160786 / Rev.E / May 2008