Simrad ES70-7C - REV C User manual

Simrad ES70-7C
Split beam echo sounder transducer
MAXIMIZING YOUR PERFORMANCE AT SEA
www.SIMRAD.com
Technical specications
The following specications are
valid when all four quadrants are
wired in parallel.
• Resonant frequency: 70 kHz
• Circular beamwidth: 7 deg
• Directivity:
D: 650
DI = 10 log D: 28 dB
• Equivalent two-way beam angle:
  Ψ:0.009
10logΨ:-21dB
• Side lobes: Less than -23 dB
• Back radiation: Less than -40 dB
• Nominalimpedance:19ohm
• Transmitting response:
185dBre1μPaperV
• Receiving sensitivity, open
circuit:-190dBre1VperμPa
• Electro-acousticefciency:0.75
• Max.pulsepowerinput:1000W
• Max.continuousinput:10W
• Max.transducerdepth:20m
• Cable length: 20 m
• Cablediameter:10.6mm
• Weightwithoutcable:6.4kg
• Storage temperature: -20° to 70°C
Introduction
The Simrad ES70-7C is a split-
beam composite transducer with a
largebandwidth.Thisprovidesane
range resolution, which is important
forsingleshdetectionandtarget
strengthmeasurement.Thetransducer
hasfourquadrants.
Order number
KSV-203678
Beam pattern
-30
0
30
(CD017019A)
-10
-30
-20
Admittance
(CD017019B)
30
20
10
0
-10
-20
0 10 20 30 40 50
85
55
70
Conductance, mS
Susceptance, mS

855-164385 / Rev.C / November 2006
Strandpromenaden 50
P.O.Box 111
N-3191 Horten,
Norway
Simrad Horten AS
Telephone: [phone]
Telefax: [phone]
[e-mail]
www.simrad.com
Simrad ES70-7C
Installation principle
(A) = Steel blister, must be
manufactured by the shipyard
(B) = Mounting ring, can be supplied
by Simrad
(C) = Clamping ring, can be supplied
by Simrad
(D) = Guide to indicate “Forward”
(E) = Air outlet
(F) = Forward
(G) = Transducer cable
Refer to the Simrad ES70-7C
Installation manual for more
information.
Outline dimensions
All dimensions in mm
EE
A
C
G
D
F
B
(CD017010B)
ø250
125
80
ø24
ø280
85,2
R1
70,2
R1
R5
Guide cam
Forward
M8,
depth:
12 mm
ø130