Side Looking Doppler Sensor

OTT SLD

Side Looking Doppler Sensor

OTT SLD

The OTT SLD is a measurement system designed for continuous recording of water speed and level in streams, rivers, and canals. Using the acoustic Doppler principle, the sensor reliably measures flow velocity across a wide range of conditions, including during floods.

Applications:

Reliable performance in waters with high sediment load and flood conditions.
Suitable for small water bodies as well.
Natural rivers, streams, irrigation systems and water canals

Tecnnology

Equipped with two horizontal ultrasonic transducers (Side Looking Doppler) for measuring water velocity.

Processing

All measurement values are analyzed, verified, and processed by an integrated signal processor before being used for discharge calculation.

Communication

All measurements can be retrieved using SDI-12, RS485, RS232, or Modbus RTU protocols and are available for storage on a data collection platform, such as the OTT netDL station manager.

Measurements

Velocity measurements from up to nine cells, along with measured water level, are used to calculate discharge either internally in the OTT SLD or externally on a data logger.

Technical Specifications

Accuracy

Velocity: 1% of measured value +/- 5 mm/s Water Level: +/- 3 mm

Cable length

RS 422/485 max. 547 yd (500 m) (9600 baud) RS232/SDI-12 max. 71.08 yd (65 m) (9600 / 1.200 baud)

Interface

RS-232; SDI-12 or SDI-12 via RS-485; Modbus (optional)

Measurement range

Velocity: - 32.808 - +32.808 ft/s (-10 - +10 m/s) Water level: 0.492 - +32.808 ft (0.15 - 10 m)

Memory

9 MB

Minimum water level

15 cm

Purchase

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Rental

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Hire us

Got a complex project or limited resources?
Our expert engineers handle the data collection and processing on your behalf.
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