Simrad 18-11
18 kHz single-beam transducer for large depths
The Simrad 18-11 is a large, single-beam transducer with a relatively narrow beam. It is ideal for use in ocean depth measurements to a maximum depth of 7000 m.
Kongsberg Discovery
Horten, NO
Description
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Specifications
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General
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Year of introduction
2006
Application
Hydro Survey, Deep survey
Length [m]
0.625
Height [m]
0.175
Weight in air [kg]
85
Width [m]
0.625
Housing Material
Polyurethane
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Mode of operation
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Min. beam width [deg]
9
Max. beam width [deg]
13
Beam
Single beam
Configuration
Stem mount, Flange mount, Hull mount, Tank mount, Pole mount, Over the side
Max. depth {m}
7000
Frequency
Single
Min. frequency [kHz]
18
Max. frequency [kHz]
18
Cable length
20 m
Cable diameter
11mm
Weight without cable
85 kg
Storage temperature
+70 to -20 °C
Directivity
D 300 ±20 % DI=10 log D 25 ±1 dB
Equivalent two-way beam angle:
ψ 0.020 ±20 % 10 log ψ -17 ±1 dB
Side lobes
less than -18 dB
Back radiation .
less than -35 dB
Impedance
Nominal value . 60 ohm; Max. variation in |Z| 45 to 80 ohm; Max. variation phase angle ±30 deg
Transmitting response .
176 ±2 dB (dB re 1µPa per V)
Receiving sensitivity, open circuit
-168 ±2 dB (dB re 1V per µPa)
Electroacoustic efficiency
0.60 ±0.20
Maximum pulse power input
2000 W
Maximum continuous power input
100 W
Documents
Brochure
migrationu78ojn.pdf
605.99 KB
Other documents
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Product Manual (198)1.52 MB
