Simrad 38-9 - DATASHEET REV B Datasheet

Simrad 38-9

Single beam echo sounder transducer

M A X I M I Z I N G Y O U R P E R F O R M A N C E A T S E A

www.SIMRAD.com

Technical specications

• Resonant frequency: 38 kHz

• -3 dB bandwidth: 7 kHz

• Circular beamwidth: 9 deg

• Directivity D: 400

• DI = 10 log D: 26 dB

• Equivalent two-way beam

angle Ψ: 0.016

• 10 log Ψ: -18 dB

• Side lobes: Less than -18 dB

• Back radiation: Less than -25 dB

• Nominal impedance: 75 ohm

• Max. variation in |Z|: 60 to 95 ohm

• Max. variation in
phase angle: ±30 deg

• Transmitting response:

177 dB re 1μPa per V

• Receiving sensitivity, open

circuit: -171 dB re 1V per μPa

• Electro-acoustic efciency: 0.70

• Max. pulse power input: 1500 W

• Max. continuous input: 30 W

• Max. transducer depth: 100 m

• Cable length: 20 m

• Cable diameter: 11 mm

• Weight: 18 kg

• Storage temperature: -20° to 70°C

Introduction

The Simrad 38-9 is a medium

size, 38 kHz single beam echo

sounder transducer. It incorporates
48 Tonpilz elements. The circular
transducer body is easily mounted.

Order number

KSV-203635

Beam pattern Admittance

-30

0

30

(CD017017A)

-10

-40

-30

-20

(CD017017B)

Conductance, mS

Susceptance, mS

0

5

10

33 kHz

38

40

43

35

2015

0

-5

5

855-164330 / Rev.B / August 2006

Stra ndpromenaden 50
P.O.Box 111
N-3191 Horten,
Norway

Sim rad Hort en AS

Telephone: [phone]
Telefax: [phone]

[e-mail]

www .si mrad. com

Simrad 38-9

Installation principle

(A) = Steel blister, must be
manufactured by the shipyard
(B) = Mounting ring, can be supplied
by Simrad
(C) = Bolt M10x100, maximum
torque 31 Nm
(D) = Self-locking threads
(E) = Air outlet
(F) = Forward
(G) = Transducer cable
(H) = Transducer

(I) = Water drainage

For more information regarding

installation, refer to the

Simrad 38-9 Installation manual.

ø340

ø310

ø150

150 100

ø12

ø18

ø336.5

(CD017015E)

Outline dimensions

All dimensions in mm

E

I

E

B

D

G

A

B

C

H

F