Simrad ES38-10 - REV B User manual

Simrad ES38-10
Split-beam echo sounder transducer
MAXIMIZING YOUR PERFORMANCE AT SEA
www.SIMRAD.com
Technical specications
The following specications are
valid when all three sections are
connected in parallel.
• Resonant frequency: 38 kHz
• Circular beamwidth: 10 deg
• Directivity D: 330
• DI = 10 log D: 25 dB
• Equivalent two-way beam
angle Ψ: 0.015
• 10 log Ψ: -18 dB
• Side lobes: Less than -18 dB
• Back radiation: Less than -30 dB
• Angle sensitivity: 12.5
• Nominal impedance: 25 ohm
• Max. variation in |Z|: 20 to 30 ohm
• Max. variation in
phase angle: ±30 deg
• Transmitting response:
181 dB re 1μPa per V
• Receiving sensitivity, open
circuit: -177 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: 10.6 mm
• Weight: 18 kg
• Storage temperature: -20° to 70°C
Introduction
The Simrad ES38-10 is a medium
size, 38 kHz split-beam echo sounder
transducer. It incorporates 48 Tonpilz
elements in three sections.
Order number
KSV-202714
-10
-20
-30
-40
0
-30 30
(CD017015A)
(CD017015B)
33
kHz
43
10
mS
mS
-10
-30
0
0 10 20 30 40
-20
38
Beam pattern Admittance, 3 sections in parallel

855-164404 / 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 ES38-10
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) = Observe the marking on the
transducer that identifies “forward”.
(I) = Water drainage
For more information regarding
installation, refer to the
Simrad ES38-10 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