Simrad ES38-12 - REV C User manual

Simrad ES38-12
Split beam echo sounder transducer
Technical specications
The following specications are valid when all
four quadrants are wired in parallel. Note that
the specications 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efciency:60%
• Max.pulsepowerinput:
 Hullmounted:1000W
 Intowedbody:1500W
• Max.continuousinput:20W1
• 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
TECHNOLOGY FOR SUSTAINABLE FISHERIES
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)
SusceptanceB(mS)
(CD017030-005)
Admittance

164276 / Rev.C / February 2010
Simrad ES38-12
Installation principle
A Mountingplate
B Steelblister
C Transducer
D Bolt,penetratestransducerand
securesittothemountingplate
E Transducercable,mustrunin
cableconduit
Formoreinformationregarding
theinstallation,refertotheSimrad
ES38-12 Installation manual.
Kongsberg Maritime AS
Strandpromenaden 50
P. O.Box111
N-3191 Horten,Norway
Simrad
Telephone: [phone]
Telefax: [phone]
[e-mail]
www.simrad.com
Outline dimensions
Alldimensionsinmm
166
80250
316
138
47
(CD017030-003)
(CD017030-004)