User manual SIMRAD 27-21 DATASHEET REV D

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Manual abstract: user guide SIMRAD 27-21DATASHEET REV D

Detailed instructions for use are in the User's Guide.

 [. . . ] TRANSDUCER
Simrad 27-26/21

27 kHz Dual-beam transducer

Introduction

The 27-26/21 is a dual-beam transducer incorporating 45 Tonpilz elements.  [. . . ] 60 ohm Maximum variation in |Z| . . . . . . . . . . . . . . . . . . . . 45 to 80 ohm

Technical specications

Maximum variation in phase angle . . . . . . . . . . . . . . ±30 deg Transmitting response: Narrow beam . . . . . . . . . . . . . . 177. 0 ±2 dB re 1Pa per V Wide beam. . . . . . . . . . . . . . . . . . 171. 5 ±2 dB re 1Pa per V Receiving sensitivity,  open circuit: Narrow beam . . . . . . . . . . . . -170. 0 ±2 dB re 1V per Pa Wide beam. . . . . . . . . . . . . . . . -175. 5 ±2 dB re 1V per Pa Electro-acoustic efciency: Typical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0. 70 Minimum. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0. 50 Maximum input power: Narrow beam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3000 W Wide beam. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1500 W Maximum duty cycle at max power. . . . . . . . . . . . . . . . . . . . . 0. 05 Maximum transducer depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500 m Cable length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 m Cable diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  [. . . ] -20° to 70°C

Data

Narrow beam Installation

Wide beam

Manufacturer: Simrad AS Strandpromenaden 50 P. O. Box 111 N-3191 Horten Telephone: +47 33 03 40 00 [. . . ]

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