SyQwest Bathy 500HD [P01500HD-1] 210 kHz. Multi-Frequency Survey Echosounder

The Bathy-500HD Survey Echo Sounder provides a high-contrast thermal chart record complete with alphanumeric annotation of important parameters such as geographic position, depth, speed of sound and offset for draft/tide. Real-time viewing of all parameters is provided to the user via front panel liquid-crystal display. Position input can be from either a standard C/A GPS receiver or differential GPS system. Depth data is available to external devices in digital form, via a versatile interface, whose format is selectable by the user using the front panel keypad. The user may obtain digital depth data output, in various industry standard RS-232 formats or NMEA-0183. The ability to accept external annotation input from various PC-based hydrographic software is standard in the Bathy-500HD.

Unit set-up and parameter changes are accomplished via the keypad. Important parameter values are retained by the unit in non-volatile memory when power is removed. A real-time internal clock provides time and date stamping of the chart record.

The Bathy-500HD is equally well suited for both applications which involve rapid depth of channel determination by viewing the chart record and for detailed hydrographic surveys whereby automatic operation and unattended logging of digital depth data is desired.The use of embedded parallel microprocessor architecture allows for operation of the chart recording function simultaneously with digital display and data outputs, while further having the real-time capability to implement a proven weighted bottom detection technique, adaptive bottom tracking gate and other advanced signal processing.

Entirely portable, the Bathy-500HD can be operated on any vessel of opportunity since a wide range of A.C. and D.C. input voltages can be used. Your Bathy-500HD is capable of operation on various frequencies as selected by the user; See Section 3.3.1 for frequency selection procedure. Space is provided in the rear of the unit to store the various transducer types. Since scale annotation is printed on the chart along with bottom features, only one type of chart paper is required; The user need not change paper type when changing measurement units from feet to meters or vice-versa.

Echo sounding measures water depth by measuring the time interval required for ultrasonic sound waves to travel, at a known velocity, from a known point (a vessel) to a reflecting surface (water bottom) and return. If the time is measured between the transmission of a sound wave and the reception of its echo, the depth may be determined by multiplying one-half of this time interval by the velocity of sound in the water column.

For accurate surveying, sound velocity (more correctly referred to as speed of sound since it is really a scalar value) must be determined and entered into the echo sounder. Sound speed in water is dependent upon the salinity, temperature and depth. For instruments that operate in shallow depths, as is the case for the Bathy-500HD, depth is not a major factor effecting sound speed, so such is not considered in this manual. Complete details regarding the various methods available to the user to measure or estimate sound speed is included in the chapter which describes unit operation (Section 3.0).

Under optimal desired survey conditions, only a single trace will be shown in the water column; That, of course, representing the water bottom. Various conditions do however exist which result in other marks between the zero line and obvious water bottom. Physical conditions such as a rapid temperature gradient (thermocline) or density variation (pycnocline) can form an acoustically reflective layer between the zero mark and true bottom. Further, dense biological material (plankton) may have the same effect While the user may,in many cases, easily recognize these layers (as represented on the paper chart), automatic digital depth tracking, display and output may be effected. In such cases, a blanking feature (manual gate feature on the Bathy500HD) is required for robust, reliable unattended surveying.

Features:

• Compatible with industry standard hydrographic post processing software
• Thermal Recorder
• Depth Resolution 1cm
• LCD Display; RS232/422 Output
• External Programmable Annotation
• GPS/NAV Integration;
• NMEA 0183 Input
• Frequencies of Operation - 33, 50, 200kHz, (seleced at time of order)
• Power 11-30VDC, 115/230V, 50/60Hz, < 40watts

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What's In The Box:

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• (1) P01500 Bathy-500HD Multi Frequency Unit
  
• (1) P01182 D.C. Power Cable
  
• (1) P01183 A.C. Power Cable
  
• (1) P01044 Data I/O Plug Kit
  
• (3) P01184 D.C. Fuse (spare) 5 amp, 250 V., 3AG
  
• (3) P01185 A.C. Fuse (spare) 0.5 amp, 250v
  
• (2) P01200 Chart Paper Roll Kit
  
• (1) P01504MF Operator Manual
  

Brochure/Datasheet

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Instruction manual

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