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OAS insttype Detail for Acoustic Doppler Velocimeter (ADV)
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| insttypes_id: | 216 |
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| Term: | Acoustic Doppler Velocimeter (ADV) |
| Description: | High-resolution acoustic instruments to study rapid 3D velocity fluctuations |
| Definition: | ADVs have three or more focused beams to measure with high sampling rates in a small point. They work by sending out a short acoustic pulse from the transmit element. When the pulse travels through the focus point for the receiver beams, the echo is recorded in each of the acoustic receiver elements. The echo is then processed to find the Doppler shift, the scaling is adjusted with the measured speed of sound in the liquid (hence the temperature measurement), and the velocity vector is recorded or transmitted to a PC at a rapid rate. http://www.nortek-as.com/en/products/velocimeters |
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| Deprecated: | false |
| Metadata version: | 1 |
| Keydate: | 2013-12-17 14:47:49+00 |
| Editdate: | 2013-12-17 14:54:03+00 |