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The AQUAscat 1000 acoustic particle size profile analyzer represents the latest achievement of the new generation of high-frequency underwater acoustic instruments, mainly used for studying sediment movement, sediment (suspended particles) profile distribution, underwater riverbed sediment morphology, dredging and sedimentation research, etc. It has four transducers that can emit high-frequency sound signals, each transducer emitting a different frequency. The system calculates particle size and sediment concentration by measuring the acoustic signals reflected back from sediment or other suspended particles within a certain cross-sectional range. The sampling interval for each layer within the profile can be set by software, ranging from 2.5 millimeters to a few centimeters. When measuring a vertical profile, the range of each layer can be expanded to several tens of centimeters. When used for suspended particle measurement, the total cross-sectional range can reach 1-2 meters; In dredging and sedimentation research, the depth of the measured profile can reach up to 20 meters. The instrument has a wide range of applications and can be used in laboratories or equipped with a deep-water pressure resistant casing for long-term monitoring underwater. In addition, the instrument also has multiple power supply modes to choose from.
| Range of sediment | A radius of 20 to 2000mm |
| frequency | 4 frequencies, ranging from 500 kHz to 5 megahertz |
| sensor | Ceramic transducers with a diameter of 10-20mm, along with other optional configurations. |
| Sensor arrangement | AQUAscat 1000： An integrated device consisting of four transducers; Other models: Personal wired sensors |
| gain | Set various gain (TVG) curves through software |
| Range | 150 centimeters (typical value), up to 2MHz depending on the model below 20. |
| Transmitting signal | 1 watt |
| transmission speed | The highest is 100Hz (i.e. 400 pulses per second) and the lowest is 1Hz. |
| Mean calculation | Mean calculation and storage of units 2 to 64 |
| Sampling unit | 256 units, 10mm standard (sound at a speed of 1500 meters per second). The options are 2.5mm, 5mm, 20mm, and 40mm. The start/end range is set by software |
| Sudden Time | By defining the required number of configuration files. |
| Signal triggered | It can be set as an external hardware trigger or an internal software trigger |
| Sampling interval | 2-255 minutes, users can define the triggering time. |
| Trigger output | Digital output can trigger external devices such as CTD |
| Electricity demand | 8 V to 24 V DC. Usually 1 watt hour, standby is 1 milliwatt |
| Battery pack | The internal alkaline battery can be used continuously for 10 days. External battery packs can be deployed according to specific requirements. |
| Additional sensors | Temperature: 0-25 ° C, ± 0.05 ° C, resolution<0.0015 ° C Pressure: 100P selection, ± 0.2% FS 0.005%, Turbidity: Optional remote turbidity sensor Other: Up to two external sensors can be connected. |
| Disk storage | Flash memory (dedicated format). 4GB standard. Up to 8GB of options. |
| Data Communication Department | RS232 up to 115 baud, USB 1.1 typically 2-3 MBd |
| Pressure resistant shell | 1000 meter underwater aluminum alloy deepwater tank |
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