The RQ-24 non-contact system measures the discharge by RADAR technology. The unique feature of the RQ-24 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-24 sensors to one system. The RQ-24 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-24 is a unique and reliable system.
RQ-24 system - components
- RQ-24 discharge sensor: Measures the flow velocity, integration of radar level sensor and calculation of the discharge
- Radar level sensor
- Protective casing for both sensors
Example of use
 | River "Rhine", Measurement site "Lustenau", Austria: Hydrographic discharge measurement of the hydrografic service. |
 | Hydroelectric power plant „Kaprun“, Austria: Preservation of evidence of the discharge quantity in power plant operations. |
 | Creek "Annabach", Graz, Austria: Monitoring of storm-water overflow in the canal from the creek "Annabach". |
Technical data
| Measuring range – rate of flow | Measuring range: 0.3 to 8 m/s; resolution: 1 mm/s Measuring principle: Radar, Doppler frequency shift Measuring frequency: 24 GHz, beam angle 12°/20° | |
| Measuring range – water level | Measuring range: 0 to 30m; resolution 1 mm Measuring principle: Radar, measurement of delay time Measuring frequency: 6 GHz | |
| Interface – analog | 1 x output 4 – 20 mA for discharge | |
| Interface – digital | Interface: R S 232 Transfer rate: 1 ,2 to 19,2 kBd Protocoll: various ASCII -Protocols Output: discharge, flow velocity, level, quality flag | |
| Powersupply | Supply voltage: 10,5 bis 15 VDC Current: max. 170 mA (measuring phase); resting phase < 1 mA Power consumption: 2,83 mAh per measurement | |
| Area of application | operating temperature: -35 °C bis +60 °C | |
| Protection type | IP 66 |
