Simrad ES38-12
Split beam echo sounder transducer
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
1
• 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.
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.
Beam pattern
T E C H N O L O G Y F O R S U S T A I N A B L E F I S H E R I E S
www.simrad.com
-10
-20
-30
-40
dB
(CD017030-006)
0
25
50
75
25
50
75
35 kHz
45
30
40
Conductance G (mS)
Susceptance B (mS)
(CD017030-005)
Admittance