Simrad ES38B
38 kHz high power split-beam transducer
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
Introduction
The ES 38B is a split-beam
transducer incorporating 88 piezo-
ceramic elements distributed over four
quadrants.
Order numbers
Transducer: KSV-074531
Support beam: 099-206575
(*)
Mounting ring: 499-074076
(*)
(*) These items must be ordered separately.
Specications
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: 7 ±1°
• Directivity: 28.0 ±1 dB
• Equivalent two-way
beam angle: -20.5 ±1 dB
• Side lobes: ≤ -15 dB
• Back radiation: ≤ -35 dB
• Nominal impedance: 19Ω
(Each quadrant: 75Ω)
• Transmitting response:
183 dB re 1μPa per V
• Receiving sensitivity, open circuit:
-177 dB re 1V per μPa
• Electroacoustic efficiency: 50%
• Max. input power: 4000 W
• Max. continuous power: 40 W
1
• Max. transducer depth: 50 m
• Cable length: 20 m
• Cable diameter: 17,5 mm
• Weight without cable: 40 kg
• Storage temperature: -40 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 40 W.
-10
-20
-30
-40
dB
(CD017022-002)
Beam pattern
Admittance
