Selecting A Transducer - NorthStar 491 Install Manual

SECTION TWO — Installing the transducer
Selecting a
transducer
Manufacturer
Airmar
Airmar
Airmar
Transducer
element
50/200A
50/200A
50/200B
50AE/200Riq
PAGE 4
Northstar recommends using an Airmar transducer with the Northstar
491 echo sounder. The Airmar B260, B744 and P66 can be obtained from
Northstar as an installation kit with connectors installed.
Table 1: Northstar-recommended transducers
Housing
B260
B744V/B44V (with
3-wire speed)
P66
A table of Airmar transducer elements is given below to assist in evaluat-
ing characteristics of other Airmar transducers.
Table 2: Airmar transducer elements
Single Used in
or Dual Airmar
element P/N
Single B744V
B744VL
P319
B117
SS555
Single P66
P79
P74
Single B256
Dual B45
B250-B
B260
Dealers can also purchase quantities of transducers directly from Airmar
Technology Corporation at:
Airmar Technology Corporation
Milford, New Hampshire 03055-4613
Power Frequency
1 kW 50/200 kHz
600 W 50/200 kHz
600 W 50/200 kHz
Acoustic Beam
material Width
(50
kHz)
Urethane 45°
LPU 45°
Urethane 23°
Urethane 19°
35 Meadowbrook Drive
Phone 603/673-9570
Fax 603/673-4624
(www.airmar.com)
491 INSTALLATION MANUAL Revision A
Northstar P/N
TD1004
TD1005
TD1006
Beam Rated
Width Power
(200 kHz)
12° 600W
11° 600W
5° 1200W
6° 1000W