User manual SIMRAD 18-11 DATASHEET REV C
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Manual abstract: user guide SIMRAD 18-11DATASHEET REV C
Detailed instructions for use are in the User's Guide.
[. . . ] TRANSDUCER
Simrad 18-11
18 kHz single-beam transducer for large depths
Introduction
The 18-11 is a large, single-beam transducer with a relatively narrow beam. [. . . ] 0. 020 ±20 % 10 log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -17 ±1 dB Side lobes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . less than -18 dB Back radiation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . less than -35 dB Impedance: Nominal value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 efciency . . . . . . . . . . . . . . . . . . . . . . . . . 0. 60 ±0. 20 Maximum pulse power input . . . . . . . . . . . . . . . . . . . . . . . . . 2000 W Maximum continuous power input . . . . . . . . . . . . . . . . . . 100 W Maximum transducer depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 m Cable length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] 11 mm Weight without cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 kg Storage temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +70 to -20 °C
(859-130404 Rev. C)
Data
Beam pattern Installation
Admittance
Outline dimensions
Manufacturer: Simrad AS Strandpromenaden 50 P. O. Box 111 N-3191 Horten Telephone: Telefax: Internet: +47 33 03 40 00 +47 33 04 29 87 www. simrad. com
Installation example [. . . ]
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