Simrad 38-9 - REV B User manual

Simrad 38-9
Single beam echo sounder transducer
MAXIMIZING YOUR PERFORMANCE AT SEA
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
0510
33 kHz
38
40
43
35
2015
0
-5
5

855-164330 / Rev.B / August 2006
Strandpromenaden 50
P.O.Box 111
N-3191 Horten,
Norway
Simrad Horten AS
Telephone: [phone]
Telefax: [phone]
[e-mail]
www.simrad.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
EB
D
G
A
B
C
H
F