Simrad 38-7 DATASHEET

TRANSDUCER

Simrad 38-7

38 kHz Single-beam transducer

Introduction

The 38-7 is a large, single-beam transducer incor­porating 88 Tonpilz elements. It has a relatively
narrow beam with substantial range capability.

Order number

KSV-082776

Technical specications

Resonant frequency......................................... 38 kHz

Beamwidth, circular.....................................7 deg ±1

Directivity index ..........................................28 ±1 dB

Equivalant two-way beam angle............. -20.5 ±1 dB

Side lobes..........................................less than -15 dB

Back radiation ...................................less than -35 dB

Impedance:

Nominal...................................................60 ohms

Max. variation in |Z| .........................45 - 80 ohms

Max variation in phase angle .........................±30 deg

Transmitting response.............................185.5 dB ±2

re 1µPa per V

Receiving sensitivity, open circuit ........ -170.5 dB ±2

re 1V per µPa
Electroacoustic efciency:

Typical............................................................0.70

Minimum........................................................0.50

Maximum input power ..................................4000 W

Maximum duty cycle at max. power.................... 1 %

Maximum transducer depth ............................... 50 m

(855-164017 Rev.C)

Cable length ....................................................... 20 m

Cable diameter ................................................ 11 mm

Weight without cable ........................................40 kg

Storage temperature ................................ -20 to 70 °C

Data

Installation

Manufac tur er:

Simrad AS

Strandp romena den 50

P.O.Box 111

N-3191 H orten

Telephone: [phone]