Overview
| brand | Autec | Does it support processing customization | |
| Imported or not | no | Installation direction | Adapt to the direction of water flow |
| measuring range | 0-6m, 0-12m | measurement accuracy | |
| Meter reading system | reading | ||
| Explosion proof level | IP67 | Boundary flow | |
| working temperature | seventy | working pressure | |
| Nominal flow rate | Nominal pressure | ||
| power | specifications | 60G | |
| Joint Centre-to-centre distance | structural style | ||
| Accuracy level | scale | ||
| caliber | type | ||
| Flow range | Test strength | ||
| Applicable scope | Measure water level, flow rate, flow rate, cumulative flow rate | Applicable medium | liquid |
| Bore diameter | Display method | Split screen display | |
| model | LDV | colour | black |
| maximum power | maximum scale | ||
| Maximum flow rate | Minimum reading | ||
| Minimum flow rate | Processing customization | no | |
| System mode | Aotai Cloud Platform | purpose | Flow measurement by departments such as hydrology, water conservancy, environmental protection, and water affairs |
| producing area | Chinese Mainland | province | Fujian Province |
| classification | Radar flow meter | Article number | LDV |
| Prefecture and city | Fuzhou | Operation mode | Fixed/handheld |
| name | Doppler radar current meter | Saleable land | nationwide |
| Product characteristics | Radar flowmeter | Decoration and construction content | Hydroelectric engineering |
Product Details
The radar current meter is installed directly above the open channel river or the sewage pipeline, and can perform non-contact real-time measurement of the surface flow velocity of the river or sewage. It is suitable for fields such as water conservancy and hydrology, environmental protection and pollution monitoring. The online flow measurement system can continuously obtain measured flow velocity data, which is a new method for real-time monitoring of flow velocity. It plays a positive role in solving flow measurement problems in complex flow states and has universal promotion significance. Non contact radar current meter for flow velocity measurement, unaffected by sewage corrosion and sediment, easy to maintain, and easy to operate.
Remote surface radar wave Doppler flow measurement scheme: convenient data collection, processing, and orderly remote observation of hydrological data, including: smooth flow rate, elevation water level, water temperature, smooth flow, net cumulative flow, flow area, etc., and the same can also be set: installation height, smoothness coefficient, current carrying shape and parameters, cumulative clearing, Baud, and address.
The surface radar wave Doppler flow rate meter product is suitable for monitoring water level, flow rate, and flow rate in rivers, oceans, observation stations, ships, buoys, open channels, sewage outlets, municipal pipeline networks, and other occasions. It is also suitable for laboratory simulation of flow rate, tidal power generation energy flow rate, and flow direction monitoring. It is also used in conjunction with cable channel systems for flow measurement applications.
The Doppler effect is named in memory of the Austrian physicist Christian John Doppler. In the field of acoustics, when there is relative movement between the sound source and the receiver (i.e., the probe and the reflector), the echo frequency will change. This change in frequency is called frequency shift, or Doppler effect. Related products include Aotai's underwater ADV acoustic Doppler flow meter, ADCP, etc. This principle applies not only to acoustics and optics, but also to radar waves. Related products are also widely used in aviation, aerospace, geography, hydrology, municipal and other fields.
The basic principle of the surface radar wave Doppler current meter is to use the Doppler effect to observe the flow rate: when the radar current meter and the water body are moving at a relative speed V, the frequency of the electromagnetic wave received by the radar current meter is different from the frequency of the electromagnetic wave emitted by the radar itself, and this frequency difference is called Doppler frequency shift. By analyzing the relationship between frequency shift and V, the surface velocity of the fluid is obtained.
When radar waves incident on the water surface, the waves, small streaks, and floating objects on the water surface scatter the radar waves. Due to the presence of water flow, there is relative motion between the scatterer and the transmitter and receiver, and the received signal has a certain frequency shift relative to the transmitted signal, which is related to the Doppler frequency shift, frequency shift value, and flow velocity.
(1) Power supply: DC12V ± 10%;
(2) Signal output: RS485. MODBUS. RTU;
(3) Compact in size, without contact with the measured fluid, without affecting the flow state;
(4) 120GHz frequency modulation signal+CW continuous wave Doppler, with high accuracy and resolution;
(5) 60GHz radar water level measurement;
(6) Extremely narrow beam angle, suitable for various narrow spaces;
(7) Ultra low power consumption, IP68 protection level, suitable for outdoor environments;
(8) Sensitive sensing and high resolution;
(9) Fast response speed, measuring instantaneous flow velocity;
(10) Measure linearity;
(11) Non contact measurement, unaffected by mud, garbage, plants, etc;
(12) Suitable for measurement and use in various water areas with high suspended sediment content and abundant floating plants, as well as unmanned long-term automatic online monitoring;
(13) Not affected by temperature, condensation, or spider webs;
(14) Small size, light weight, compact design, large range, cost-effective;
(15) Intelligent perception of pole, bridge deck, and water surface fluctuations, synchronous optimization and compensation.
Installation instructions
1. It is recommended to install the radar flowmeter on the centerline of rivers and channels.
2. When installing, observe the bubble level so that the bubble is located in the center of the level, which can make the ranging radar beam perpendicular to the measured horizontal plane.
3. Within the irradiation range of the ranging radar beam, it should be kept unobstructed and unobstructed, and metal objects should be avoided nearby. If there are metal railings, handles, etc., the installation height of the radar flowmeter can be adjusted appropriately to avoid interfering objects.
4. The beam of the velocity radar is at an angle of 45 ° to the measured horizontal plane (by observing, the horizontal bead on the product surface can be in the center position), and correct water flow velocity information can be obtained in both the downstream and upstream directions, which can be flexibly selected according to the on-site environment. The radar wave irradiation area should be selected in areas with stable water flow as much as possible, avoiding exposure to water inlet, outlet, water flow drop, bends, and obstacle sections (with unstable flow velocity), which can affect the accuracy of flow velocity measurement.
technical parameter
(1) Flow rate measurement range: 0.03-20.00m/s;
(2) Flow rate accuracy: 1% ± 0.01 m/s; Resolution: 0.001 m/s;
(3) Dead zone flow rate: 0001~0.006 m/s
(4) Water temperature measurement range: -5 ℃~60 ℃;
(5) Water temperature accuracy: ± 0.5 ℃;
(6) Water level range: 0-10m;
(7) Water level accuracy: 0.1% ± 2mm;
(8) Flow sensor: planar radar, water level sensor: 60G spherical antenna radar;
(9) Waterproof grade: IP67 (IP68 can be customized);
(10) Storage temperature: -20 ℃~60 ℃;
(11) Output interface: RS485. MODBUS. RTU;
(12) Power supply: DC12V ± 10%;
(13) Measurement parameters: smooth flow velocity, instantaneous flow velocity, elevation water level, overflow area; Water temperature, speed of sound;
(14) Response time: 3-60 seconds, factory default: 10 seconds.