The RQ-30 non-contact system measures the discharge by RADAR
technology. The unique feature of the RQ-30 system is the continuous
capturing of flow velocity which enables an exact discharge measurement
and evaluation of specific discharge situations. In case of flood the
system measures the exact discharge and because of the non-contact radar
technology there is no damage of the measurement system by bed loads or
trees. If the floodplains get flooded the discharge is determined by
combining several RQ-30 sensors to one system. The RQ-30 system measures
from very low water depth up to the maximum possible discharge of a
100-year flood or even greater. To measure any discharge situation at
rivers, torrents, creeks, mountain torrents or open channels the RQ-30
is a unique and reliable system.

Properties and benefits

• Maintenance free
• No structural construction in the water needed
• Fully functional even in flood water situation
• Low power consumption allows solar cell instigation
• Detection of flow direction
• Measurement range 0.30 to 15 m/s
• Recognition of hysteresis effects
• Measurement in back water situation
• Recognition of vegetal invasion
• Measurement in tide dependent rivers
• Own measurement interval or externally triggerd
• RQ-30a: analog output 4 to 20 mA

RQ-30 system – components

• RQ-30 discharge sensor: Measures the flow velocity, integration of radar level sensor and calculation of the discharge
• Radar level sensor
• Protective casing for both sensors

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