Q2 / KDO - Speed flow meter
Q2/KDO Flow Meter
Flow velocity measurement by Doppler method
KDO sensors sense the flow rate of the liquid and thus, in conjunction with the sophisticated software of the Q2 / KDO unit, enable a modern way of measuring the water flow in open profiles or in pipes without the need to build a measuring trough or overflow.
Flowmeter characteristics
- High range of flow velocity measurement in both directions up to ± 6 m/s
- Design of a flow meter for installation in the open level and in the pipe wall
- The aerodynamic shape of the speed probe minimally disturbs the flow
- No mechanically moving parts
- A particularly advantageous assembly of a flow meter in places without existing or hydraulically unsatisfactory measuring profiles
- Telemetry unit with automatic transfer of data to the database on the server
- Rich software support on the server (graphic and tabular visualizations, prints of monthly balances, ...)
- Easy extension of the flow meter by measuring other quantities (levels, pressures, temperatures, ...)
- Built-in PLC automat for control of smaller WWTPs, CS, etc.
- Flowmeter parameters configurable via the Internet
Measurement principle
KDO sensor
The intelligent KDO flow rate sensor from the German company NIVUS GmbH works on the Doppler principle and is supplied in a mechanical design for mounting on the bottom of the gutter (KDO/S) or in the pipe wall (KDO/P).
The sensor emits a series of ultrasonic pulses into the measured medium at an angle of 45 ° and evaluates the flow velocity based on the measurement of the frequency shift of the signal reflected from the particles entrained by the flow. This measuring method also makes it possible to measure the backflow speed and can be used up to a maximum speed of 6 m/sec.
The sensor includes a 30 m long cable, after which the sensor is powered from the Q2/KDO unit and after which data communication also takes place via the RS485 interface under the MODBUS RTU protocol. If required, this cable can be extended to a distance of up to 120 m.
Connection of the KDO sensor to the DPD-4 connection board of the Q2 / KDO unit
Level sensor
When measuring flows in open channels, in addition to the flow rate, it is also necessary to measure the level in the measured profile. Level sensing can be measured either by the US1200 ultrasonic probe located above the KDO sensor, or a more expensive KDO / S sensor containing its own hydrostatic level sensor can be used.
Examples of using a KDO flow meter
The KDO sensor offers a modern way of measuring the flow of water in pipes or in open profiles without the need to build a measuring trough or overflow. In conjunction with the G2-G / KDO telemetry unit, which can automatically transfer the measured data to the database on the server, it forms a report with great utility value. It can be used especially in:
- Measurement of wastewater flow at WWTPs and industrial plants.
- Monitoring of flows of smaller streams and rivers and everywhere where it is not possible to build specific profiles due to narrowing of the flow profile or insufficient height difference.
Selected SW functions of the registration unit Q2-G / KDO
- Temperature correction of the fluid velocity according to its temperature.
- Calculation and archiving of instantaneous and accumulated flow. When measuring in an open channel, the measured level and temperature can also be recorded separately.
- Recording of error messages from the sensor and sending of SMS notifications to the station diary.
- Monitoring of other connected technology - the Q2 / KDO unit contains 16 recording channels for measuring flows, levels and other quantities.
- Automatic transmission of measured data to the server at set times, transition to more frequent data transmissions after evaluation of the alarm condition.
- Parameterization via the server, including saving changes in settings, adjusting the station time according to the server.
Dimensions of KDO sensors
KDO/P sensor for placement in the pipe wall:
Main menu
- Solutions
- Tap water treatment
- Dispatching accessible via the Internet
- Remote water meter reading
- Monitoring of water leak
- Measurement of qualitative water parameters
- Measurement in Water Supply Network
- Pressures and flows regulation
- Controlling of water pumps and water reservoirs
- Controlling technology of waste purification plants
- Flow processing into charts
- Waste water treatment
- Monitoring of running and technology of WWTP
- Control technology of WWTP
- Measurement of waste water flow
- Dissolved oxygen measurement and controlling of blows
- Measurement of chemical parameters of water
- Local control of pumping stations
- Remote control of pumping stations
- Root zone waste water treatment plants
- Dispatching accessible via the Internet
- Processing of measured flow data
- Water level monitoring
- Flood warning system
- Environmental monitoring
- Water level and flow monitoring in small water-courses
- Temperature measurement in bore holes and water basins
- Monitoring of soil humidity and temperatures
- Measurement of rain-fall quantity and intensity
- Level measurement in boreholes and remote data collecting
- Measurement of water temperature and conductivity in boreholes
- Measurement of well yield – pumping tests
- Water-level regulation in boreholes
- Capacity and intensity of drainage water
- Thermal balance in ecological constructions
- Meteorological stations
- Relative humidity and air temperature, rainfall, global radiating, atmospheric pressure, speed and direction of wind
- Satellite transfer while the GSM signal is unavailable
- Meteorological stations for agriculture and research institutes
- Extension of meteorological stations about special sensors
- Different type of tower constructions
- Data transfers into the Internet
- Special kinds of graphs for visualization
- Irrigation control systems
- Data collecting and processing
- Data hosting on the server
- Software MOST
- Parameterization of stations via the Internet
- Transferring of measured data into a current dispatcher programme
- Visualization and processing of data
- Data exports from the server into the PC
- Overview reports working-out and printing
- An automatic emails sending
- Types of SIM cards
- Operating costs of the telemetric station
- Industrial applications
- Tap water treatment
- Products
- Monitoring and control units for water supply
- Small telemetric stations and data loggers
- Smart Metering - remote meter readings
- Water level meters
- Hydrostatic level meters
- Radar level meters
- Ultrasonic level meters
- Level gauges for wells, boreholes and reservoirs
- Level float switches
- Equipment for pumping tests of boreholes and wells
- Local Warning Systems
- Flow meters for open channels
- Water quality sensors
- Meteorological stations and measuring sensors
- Accessories for control units and data loggers
- Boxes and cabinets for telemetry and control units
- Gel accumulators, batteries and backup sources
- AC power supplies and battery chargers
- Photovoltaic solar panels
- Antennas and extension cables
- Sensor cables, connectors and connecting expanders
- Communication signal converters and communication cables
- Mechanical mounting elements
- Industrial and residential water meters
- Server software and services
- References
- Support & Download
- About us
- Monitoring
- Datahosting
Documentation
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