Maximum Detection Range For Different Transducers; Transceiver Dimensions And Weight - Simrad EY500 Instruction Manual

System familiarization

Maximum detection range for different transducers:

Type Beamwidth
(degrees)
38-22 11x22
ES 70-11 11x11
70-24 11x11
120-25 11x11
ES120-7 7x7
200-7 7x7
200-28 7x7
200-30 30x30
710-30 5x5
710-36 2.5x2.5
These transducers can be hull-mounted, foil-mounted or provisionally mounted on a rod. The
range calculations are valid for water temperature 10EC, Sound absorption according to Francois
& Garrison, JASA Dec. 1982, Fish target strength !30 dB and !50 dB, Bottom backscattering
strength -10 dB per sq. m, Acoustic noise = SPL-DI+M+B (dB re 1 V) SPL = 142 -
20 log f (dB re 1 FPa per Hz). Electrical noise -189 + B (dB re 1 W), Detection threshold = 10
dB. Seawater salinity 3.5%, 0.3% for freshwater.
* = Sample limited

Transceiver dimensions and weight:

Transceiver:
12
Cable Max. detection depth
length Freshwater (m)
(m)
fish
!
TS = 30 TS =
!
dB 50 dB
15 500 170
15 440 150
15 480 170
25 440 170
20 500 210
15 350 150
25 350 150
15 110
15 75
15 95
L340 x W350 x H141 mm, 7 kg
bottom
!
TS =
dB
3000* 360
1500* 260
1500* 270
900* 230
900* 260
600* 190
600* 190
40 600* 85
40 160 65
60 180 80
Max detection depth
Seawater (m)
fish bottom
30 TS =
!
50 dB
140 1900
120 950
130 950
120 650
140 700
100 490
100 490
35 290
35 130
50 150
P3400/B