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AWAC
This instrument is a model that applies the basic principle of the port no.2948472 (name "sea gauge") of the port and Airport Research Institute, the
Product details

AWAC phonetics

AWAC This is a very innovative instrument that can measure the velocity profile and measure the wave at this one. EMEP Using the software for the direction spectrum calculation by the method (extended Zui large entropy method), detailed wave direction spectral data can be obtained. In addition to the memory record by the external battery, this measuring instrument corresponds to the real-time recording by the wire cable.
This instrument is a model that applies the basic principle of the port no.2948472 (name "sea gauge") of the port and Airport Research Institute, the Marine Research Association of Japan, the Sea Research Association of Japan, and it is sold in Japan as a practice of the patent invention by sonic.

Velocity output item

Three component velocity and three beam reflection intensity for each set layer

Wave output item
(software for sale)

Significant wave height, 1 / 10 Zui large wave height, Zui wave height, average wave height
Significant wave period, 1 / 10 Zui wave period, Zui wave period, average wave period
Peak wave direction, average wave direction, wave direction dispersion angle, constant directional wave ratio, etc

Name

Ultrasonic wave height?Wave direction?Profiler

Type

Flow direction measurement specification

Ultrasonic frequency

1 MHz

600 kHz

400 kHz

Distance measurement

30m

50 m

100 m

Layer thickness

0.254.0 m

0.58.0 M

1.08.0 M

Proximity dead distance

0.2 M

0.3 M

1.0 m

Measuring layer

1128 layers

Velocity range

0± 10 m / S

Accuracy of velocity measurement

The measurement value is

Wave height measurement specification

Measuring method

Vertical beam, water pressure, velocity

Range of measurement

35 m

60m

100 m

Interval

1 Hz / 2 Hz(4HzAST)

1 Hz(2HzAST)

0.75 Hz(1.5HzAST)

Number of measurements

5121024, 1200, 248, 2400

Calculation method

Extended Zui large entropy (EMEP) method

Calculation output

High wave wave period

Hardware specification

Record capacity

9 MB(standard), + 32 / + 176 / + 352 MB extensible or 4 gBSD

Dimensions

Diameter: 190 mm to 210 mm, height

Weight

6.1 kg

6.2kg

7.3 kg

Underwater weight

2.9 kg

2.9 kg

3.6 kg

Breakdown performance

300 meters(depending on the mounting depth sensor)

Battery

Battery canister (alkaline / lithium)

Mounting sensor specification (common)

Sensor

Water temperature

Compass

Slope

Depth type

Method

Thermistor

Magnetic resistance (MR) equation

Electrolyte type

Piezo resistance

Range

-440 degrees centigrade

0360 degrees

0~±30°

Selectable

Accuracy

± 0.1

±

± 0.2 degrees

± 0.5% FS

Resolution

0.01 degrees centigrade

0.1 degrees

0.1 degrees

0.005% FS

Dimensional drawing

3Measure two different wave data and calculate the wave height and wave period from there. Data to measure pressure?Wave velocity?Water surface position. The pressure is high resolution piezoresistive element, and the wave velocity is measured by the Doppler effect along the beam. The water level is a special mode of ultrasonic water surface tracking which detects the position of the water surface with a short outgoing pulse from a transducer located at the center of the measuring instrumentAST. Measurement of velocity profile onlyASTCan be used even without.
ASTThere are automatic mode and fixed mode to set the sensing range, the thickness and position of the velocity. In the case of automatic mode, it is set from the pressure data in the velocity profiler measurement before the wave height observation. This information is included in the recorded data.
If the water level changesASTBy extending the range of sensing and lowering the measurement position of velocity, stable data is acquired. When the water level change is small, the measurement position of the flow velocity is raised, and the sensitivity of the wave direction measurement is raised.
ThusHas succeeded in acquiring very accurate wave data. AndASTYou can also measure the thickness of sea ice.

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