Furuno 525T-BHC, 525TID-BHD User Manual

B258
The Cost Effective Choice
The B258 is 25 times more sensitive than a single-element 50/200 kHz transducer. This innovative 1 kW transducer makes 600 W fishfinders perform like their more powerful big brothers—especially at 50 kHz. How does it do it? The B258 uses Airmar’s new and unique ceramic-element construction. The resulting narrow beams will clearly distinguish individual fish and bottom fish from their habitat at depths down to 670 m (2,200’).
Streamlined Performance
Maximize performance by installing the B258 with Airmar’s custom fit High-Performance Fairing. At speeds over 30 knots (34 MPH), screen displays show clear images and a clean bottom trace.
Thru-Hull
1 kW Entry-Level
Fishing Applications
The versatile 1 kW transducer for all types of fishing
Inshore and blue-water trolling
500 m (1,640’)
Features
Elliptical beam covers more bottom area thus
increasing your catch at all depths
Depth and fast-response water-temperature sensor
Recommended for sportfishing boats above 9 m
(30’) and small to mid-size commercial fishing boats
Four 50/200 kHz ceramics as compared to one
ceramic in 600 W units
Provides greater surface area resulting in better
sensitivity
www.airmar.com
B258
Technical Information
50/200 kHz-Blq
Number of Elements
and Configuration
Beamwidth (@-3 dB) 15° x 21° 3° x 5°
RMS Power (W) 1 kW 1 kW
TVR 161 dB 173 dB
RVR -174 dB -183 dB
FOM -17 dB -9 dB
Q 9 15
Impedance 225 Ω 200 Ω
MAXIMUM DEPTH RANGE
50 kHz 200 kHz
441 m to 647 m 206 m to 294 m
(1,500’ to 2,200’) (700’ to 1,000’)
BEAM DIAMETER VS DEPTH
Depth 50 kHz 200 kHz
9 m
(30’)
30 m
(100’)
122 m
(400’)
305 m
(1,000’)
2.4 m x 3.3 m (8’ x 11’)
8 m x 12 m
(25’ x 40’)
30 m x 50 m
(98’ x 163’)
74 m x 124 m
(245’ x 407’)
0.6 m x 0.9 m (2’ x 3’)
1 m x 2.7 m
(5’ x 9’)
6 m x 11 m
(20’ x 35’)
16 m x 26 m
(52’ x 87’)
TRANSDUCER COMPARISON
Model Power Rating Performance Increase
B45
600 W Good Benchmark model for comparison
B744V
B744VL
B258 1 kW Better 25 times more sensitive at 50 kHz
16 times more sensitive at 200 kHz
B260
SS260
1 kW Best 50 times more sensitive at 50 kHz
13 times more sensitive at 200 kHz
R99 2 kW Superb 200 times more sensitive at 50 kHz
32 times more sensitive at 200 kHz
R209 R309
3 kW Ultimate 400 times more sensitive at 50 kHz
32 times more sensitive at 200 kHz
Due to the wide beam of the SS270W, it has been omitted from the table.
SPECIFICATIONS
Weight: 3.6 kg (7.9 lb)
Hull Deadrise: Up to 26° with fairing
Acoustic Window: Epoxy/urethane
DIMENSIONS
Transducer and High-Performance Fairing
198 mm (7.80”)
M30-2 threads
(6.00”)
152 mm
51 mm
(2.00”)
(4.20”)
107 mm
178 mm
(7.00”)
568 mm (22.35”)
B258 Transducer
36 mm (1.42”)
(4.25”)
108 mm
152 mm
51 mm (2.00”)
(6.00”)
181 mm
(7.13”)
M30-2
threads
(5.13”)
130 mm
(5.25”)
133 mm
©Airmar Technology Corporation B258_rT 01/12/11
As Airmar constantly improves its products, all specifications are subject to change without notice. All Airmar products are designed to provide high levels of accuracy and reliability, however they should only be used as aids to navigation and not as a replacement for traditional navigation aids and techniques. Xducer ID Technology Corporation. Other company or product names mentioned in this document may be trademarks or registered trademarks of their respective companies, which are not affiliated with Airmar.
®
is a registered trademark of Airmar
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