Simrad ES38-12 - DATASHEET REV C Datasheet

Simrad ES38-12
Split beam echo sounder transducer
Introduction
The Simrad ES38-12 is a split-
beam transducer incorporating 32
piezo-ceramic elements distributed
over four quadrants.
Order numbers
Transducer: KSV-111497
Mounting plate: 499-111492
(*) This item must be ordered separately.
Technical specifications
The following specifications are valid when all
four quadrants are wired in parallel. Note that
the specifications may be altered without prior
notice.
• Resonant frequency: 38 kHz
• Circular beamwidth: 12 ±2°
• Directivity: 210 ±20%
• Equivalent two-way
beam angle: 0.027 ±20%
• Side lobes: ≤ -17 dB
• Back radiation: ≤ -26 dB
• Nominal impedance: 15 Ω
(Each quadrant: 60 Ω)
• Transmitting response:
180.5 ±2 dB re 1μPa per V
• Receiving sensitivity, open
circuit: -182,5 ±3 dB re 1V per μPa
• Electro-acoustic efficiency: 60%
• Max. pulse power input:
Hull mounted: 1000 W
In towed body: 1500 W
• Max. continuous input: 20 W
• Max. transducer depth: 150 m
• Cable length: 20 m
• Cable diameter: 10,6 mm
• Weight without cable: 12 kg
• Storage temperature:
-20° to +55°C
1) The ping rate (pings per second) multiplied
with the pulse duration (in seconds), and then
multiplied with the power output, must be less
than 20 W.
T E C H N O L O G Y
(*)
Susceptance B (mS)
75
1
50
45
25
30
0
25
(CD017030-005)
F O R S U S T A I N A B L E
35 kHz
40
50 75
Conductance G (mS)
Admittance
F I S H E R I E S
dB
-10
-20
-30
-40
(CD017030-006)
Beam pattern
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