1 Introduction
The SVR-DUAL radio wave flow velocity and liquid level sensor integrates a flow velocity sensor and a liquid level sensor to monitor the flow velocity and liquid level height of rivers and streams, so as to convert the flow rate of water. When using contact instruments to measure water flow velocity and water level height poses risks, such as in cases of rapid water flow or floods, using our non-contact electromagnetic wave velocity and liquid level sensors becomes the most valuable choice. Because it can accurately measure from a stationary fixed position away from the water body, thus avoiding the risk of flooding.
The SVR-DUAL electromagnetic wave flow rate and liquid level sensor is designed based on optimized cost, with high cost-effectiveness. The data of flow rate and liquid level height can be output in four ways: RS232、RS485、SDI-12、4-20mA。
Not only can you configure sensors according to your specific requirements through software, but you can also configure sensors by sending commands through their underlying protocols to meet your complex usage requirements. We need technical support, please feel free to contact our engineers at any time.
2 Characteristics
Allowing scientists to not only measure the flow velocity on the water surface, but also the height from the water surface to the radar sensor.
The horizontal cosine angle can be adjusted, while the vertical angle remains unchanged at 40 °.
The direction of flow velocity can be selected from upstream, downstream, or bidirectional.
The parameters such as data retention time, update rate, sensitivity, etc. can be adjusted and set.
Four data output methods: RS232、RS485、SDI-12、4-20mA。
Compact size design: 16.5cm (H) x 17.8cm (W) x 33cm (L).
Narrow beam design: Current measuring probe: 6.5 º x 5.5 º at the -3dB point t
Liquid level probe: 8 º (horizontal&vertical)
Long operating distance: flow probe: 100m; Liquid level probe: 35m.
Wide speed measurement range: 0.1m/s -20m/s.
Good voltage adaptability: 10.8VDC -24 VDC, standard: 12VDC
It is rainproof and has a waterproof rating of IP67.
3 Technical parameters
3.1 Parameters of flow measuring probe
3.1.1 Overall parameters
Sensor type: Special application radar sensor
Measurement accuracy: ± 0.1 (measurement unit: m/s or km/h, etc.)
Measurement resolution: 0.1 (measurement unit: m/s or km/h, etc.)
Usage environment: -30℃ - 70℃
Radar band: K-band
Communication interface: RS232, RS485, SDI-12, 4-20mA rainproof 6-core connector
Horizontal cosine correction: 0-60 ° default 0 °
Vertical cosine correction: preset to 40 °
Data format: SS. SSS <cr>，S： Speed value, cr： carriage return
Data retention time: 100-9999 ms, default 1000 ms
Data transmission rate: 1200，2400, 9600，19200，38400，57600，115200
Default 9600
Directional selection: You can choose omnidirectional, counter current, or co current
Data processing: using 32-bit DSP chip, software can be upgraded
Shell: Black ABS and polycarbonate blend
ambient humidity: 100%
Data output port: 16 optional data interfaces, default Com 1
Supply voltage: 12VDC
Sensitivity: 1-100 adjustable
Speed measurement unit: Mph (miles per hour), km/h, fps (feet per second), m/s，
Default fps
Speed measurement range: 0.1 - 65 fps (0.1 - 20 m/s)
0.1- 45 mph (0.1 - 70 km/h)
Target acquisition time: < 1 s
Free quality assurance period: 1 year
3.1.2 Electrical parameters
Supply voltage range: 10.8 VDC – 24 VDC
Low voltage shutdown threshold: 10.8 VDC
Maximum current consumption: 175 mA
Typical working current: 150 mA @ 12VDC
Requirements for impulse current: 250 mA
3.1.3 Microwave parameters
FCC Identification Number: HTRSI – 3L
Microwave frequency range: 24.075 GHz – 24.175 GHz
Beam width: 6.5 ° x 5.5 ° @ -3dB power point
Polarization method: linear polarization
Power spectral density: 114.3 dBuV/m @ 3 m
Power output: 20dBm
Horizontal edge suppression: 15db
Vertical sideband suppression: 15db
3.2 Liquid level probe parameters
Sensor type: liquid level radar sensor
Detection distance: 0.05m - 35m
Work cycle: 10% to 100% (adjustable)
Working frequency: 61 GHz
Beam width: horizontal, vertical: 8o
Accuracy: ±2mm
Power transmission: 10 dBm
Horizontal edge suppression: 15db
Vertical sideband suppression: 15db
3.3 Overall mechanical parameters
Size: 16.5cm(H) x 17.8cm(W) x 33cm(L)
Shell: 3.2mm beige aluminum shell
Power supply: 10.8VDC -24 VDC, standard: 12VDC
Low voltage threshold: 10.8VDC
Power consumption: depends on the working cycle setting of the liquid level sensor. 12VDC worker
When setting the voltage, set it to 10% and the working current to 175mA;
Set as: 50%, working current 275mA; Set to 100%,
The working current is 400mA.
