The ES3 Multibeam echo sounder is a portable, easy to use system that will collect bathymetry over a 120 swath
up to a water depth of up to 60 meters. The small size of the ES3 makes it easy to install on vessels of
opportunity and its ease of operation makes it an excellent choice for surveyors who want to make the technical
transition from single beam echo sounding to multibeam surveying.
The ES3 Multibeam echo sounder is a portable, easy to use system that will collect bathymetry over a 120 swath
up to a water depth of up to 60 meters. The small size of the ES3 makes it easy to install on vessels of
opportunity and its ease of operation makes it an excellent choice for surveyors who want to make the technical
transition from single beam echo sounding to multibeam surveying. Specifications
Frequency: 240 kHz
Swath Width (Nominal Beam Geometry):
120° x 3° Transmit
120° x 3° Receive
Effective Beam Width*: 0.75°
Number of Beams**: Default – 480
Selectable – 240, 120
Range Resolution: 0.02% of Range
Range: 60m (197ft.) water depth
100m (328ft.) slant range
Range Sampling Frequency: 13.65333 μs
Source Level: 200dB referenced to 1μPa at 1m
Directivity Index (at Nadir): Transmit – 17dB
Receive – 31dB
Minimum Detectable Range: 0.5m below transducer
Ping Rate (PRF) 12 Hz at 20m range (Processor and # of real-time beams selected dependent)
Maximum Operating Depth: 10m below the surface (submersion depth)
Interface to PC: Ethernet (10 base-T) using TCPIP
Maximum Cable Length: 100m using CAT5-e
Connector: Underwater wet-mateable 8 conductor Subconn at transducer end, 8 pin Circular MS
type connector at JBoxend
Power Supply: 24 VDC nominal (9 to 30 VDC range using RTA)
Power Dissipation <25 Watts total
Dimensions: 162mm (6.3”) L, x 117mm (4.62) H, x 92mm (3.63) W
Weight: 8.2kg (18 lb) in air
Material: Stainless Steel Housing
Urethane Transducer Face
Real Time Appliance (RTA): (Included in ES3 scope of supply)
Three (3) port Ethernet switch (ES3, Data Acquisition PC, and spare)
9 to 30 VDC input range
Dimensions: 178 mm (7 in.) W x 102 mm (4 in.) H x 178 mm (7 in.) L