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Water flow

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Water Flow

Accurate flow and discharge measurement has been a core competency of OTT Hydromet since we created our first flow meter in 1875. Choose from a variety of either portable or stationary measurement options using different measurement technologies, including mechanical, acoustic, Doppler, and more.

Our Products

OTT SVR 100

OTT SVR 100 is a simple, non-contact, compact surface water velocity radar sensor. Designed for measuring flow in open channels and rivers where reliable velocity data is required continuously, during floods or periods of high concentrations of suspended sediments.

  • Product Highlights: Identify data influenced by sensor movement (e.g., wind, traffic) using meta data from integrated vibration and tilt sensors
  • Application fields: Non-contact surface velocity radar
  • Internal data logger: No
  • Measurement range: 0.08 ... 15 m/s (0.26 … 49 ft./s)

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OTT SLD - Side Looking Doppler Sensor

The OTT SLD uses acoustic Doppler technology for continuous measurement of water velocity and level in streams, rivers, and canals.

  • Product Highlights: Side-Looking-Doppler for continuous discharge measurement in rivers and open channels. Discharge calculation based on velocity - index - method. Integrated vessel filter algorithm, Modbus interface and output of total volume of flow (max. interval 1 day).
  • Measurement range: ± 10 m/s

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OTT MF pro - Water Flow Meter

The OTT MF Pro is a user-friendly, low maintenance electromagnetic current meter for cost-efficient in-stream discharge measurement.

  • Parameters measured: Flow velocity and water depth
  • Product Highlights: Low maintenance magnetic - inductive probe with level measurement for reliable flow measurements. Works well in low flow and turbulent conditions, cross - sections with weed growth and pollution. Applicable in streams and conduits.

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OTT C31

OTT C31 Universal current meter for flow velocity measurement in rivers and open waterways. Rod-mounted or as cable-suspended current meter from a bridge, boat or on cable ways.

  • Parameters measured: Flow velocity
  • Product Highlights: C31 - the original. Traditional hydrometric current meter with proved quality for use with wading rods, from bridges and at cable-way installations
  • Measurement range: 0.025 ... 10 m/s
  • Accuracy: ± 2%

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OTT C2

The OTT C2 small current meter for discharge measurements for shallow waters in small rivers, channels, laboratories and river models.

  • Parameters measured: Flow velocity
  • Product Highlights: OTT C2 - the original for wading rod measurements in shallow streams, applicable from 4 cm water depth.
  • Measurement range: 0.025 ... 5 m/s
  • Accuracy: ± 2%

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