NiuBoL Radar Flow and Water Level Instruments Shipped to Zimbabwe

NiuBoL has supplied radar-based flow measurement, radar water level sensing and communication equipment to Zimbabwe. These instruments address a common challenge in hydrological monitoring: how to observe moving water without placing sensitive measuring components directly in the channel.

What does a non-contact radar flowmeter measure?

A radar flowmeter is normally installed above a river or open channel. It transmits radar signals toward the water surface and uses the Doppler frequency shift in the reflected signals to estimate surface velocity. Suitable models also include radar distance measurement to determine water level.

Surface velocity is not automatically the same as total discharge. Estimating discharge in m³/s requires information about the channel cross-section and an appropriate method of relating measured surface velocity to mean channel velocity. This is why river or canal geometry matters when planning a flow-monitoring station.

Radar flow instruments observe surface movement from above the water.

How is radar water level different?

A radar water level sensor measures the distance between the instrument and the water surface. With a known reference elevation or mounting height, the distance can be converted into a water level reading. Unlike a flowmeter, its primary purpose is to track changes in water-surface height, not flow velocity.

Water level and flow readings are complementary: one shows how high the water is, while the other helps describe how the water is moving.

Radar level measurement is useful for rivers, reservoirs and drainage channels.

Connecting field instruments to remote systems

The shipment also included data communication equipment. With compatible RS485 devices, suitable power and network coverage, a data transmission unit can provide a link between field measurements and a remote monitoring platform. This can be valuable for widely separated measuring sites.

Zimbabwe's river systems, reservoirs and irrigated agricultural areas create demand for reliable water observations in water-resource studies, canal monitoring and flood-related monitoring projects. Non-contact measurement is particularly relevant where access, sediment or debris complicate instrument maintenance.

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Plan a water monitoring installation

Contact NiuBoL for product selection and a quotation. To select a radar system, share the channel width and geometry, expected water-level range, installation height, power supply and data communication requirements.