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Box Corer
Frankstar Box Corers provides a series of engineered solutions designed for the efficient collection of large-area, high-quality, undisturbed seabed sediment and overlying water samples. From the classic and reliable standard model to enhanced designs like the stabilized frame-type and high-penetration flow-guide type, and further to our efficient single-arm model, the entire product family is built to meet the rigorous demands for sample volume and structural integrity in practical surveys. All models can be flexibly configured to suit specific project requirements.
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Radar Flow Meter – Non-Contact Flow Measurement System for Open Channel and River Flow Monitoring
FS-LDLL-001 Radar Flow Meter is a sensor designed for measuring water surface velocity and flow in open water bodies. The ranging radar unit adopts FMCW (Frequency-Modulated Continuous Wave) technology, while the velocity radar operates at 24 GHz. The measurement point is located in front of the device, ensuring non-intrusive measurement without disturbing the flow field, resulting in high accuracy and excellent linearity.
With no moving parts, the sensor is resistant to sediment blockage, aquatic vegetation interference, and debris entanglement. The robust probe design ensures reliable long-term operation in harsh environments, including rivers with high sediment concentration, abundant floating vegetation, and severe winter icing conditions.
This radar flow meter is widely used for flow monitoring in hydrological stations, irrigation secondary channels, stormwater and wastewater pipe networks, and natural rivers.
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Radar Water Level Sensor – Non-Contact Water Level Measurement and Monitoring Sensor for Rivers and Open Channels
FS-LDSW-001 Radar Water Level Sensor is an 80 GHz Frequency-Modulated Continuous Wave (FMCW) radar product designed for high-precision water level measurement. The maximum measuring range can reach up to 120 m, with a blind zone of less than 10 cm.
Due to its higher operating frequency and wider bandwidth, the sensor delivers improved measurement accuracy and is widely used in hydrological, water conservancy, and municipal manhole monitoring projects.
The FS-LDSW-001 adopts a non-contact measurement principle, ensuring no direct contact with the water surface. It is unaffected by water quality, sediment, or floating debris, offering excellent environmental adaptability and reliable performance in complex field conditions.
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Float-Operated Water Level Gauge – Mechanical Water Level Measurement and Monitoring Instrument for Hydrological Applications
FS-LDSW-001 Float-Operated Water Level Gauge is a digital sensor integrating mechanical and electrical technologies. It converts the angular displacement of the output shaft into digital signals, enabling high-precision measurement of water level and determination of absolute position. The device features a power-off memory function.
Its working principle is as follows: the measuring wheel of the water level sensor is mounted on the encoder input shaft. A steel wire rope connects the float at one end and a counterweight at the other, winding around the measuring wheel. When the water level changes, the float rises or falls accordingly, driving the wire rope and rotating the measuring wheel. The encoder then outputs real-time water level values.
The device is widely used for water level monitoring in rivers, lakes, reservoirs, ship locks, hydropower stations, hydrological stations, water treatment plants, and petrochemical facilities, as well as for both surface water and groundwater level measurement.
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Radar Velocity Meter – Non-Contact Surface Water Velocity Sensor for Open Channel Flow Measurement
The Radar Velocity Meter is an integrated device combining a microstrip antenna, RF circuit, and signal processing unit. It directly outputs target velocity information and is used for flow velocity measurement in rivers and underground pipeline networks.
The radar adopts an imported German integrated chip and a front-end low-noise amplifier, featuring ultra-high sensitivity. It measures surface water flow velocity based on the Doppler principle. The microwave radar is not affected by temperature, pressure, air density, wind, or other environmental conditions, enabling stable all-weather and all-time operation.
Our radar velocity meter features a low starting speed and a wide measuring range. It includes built-in tilt compensation and gain adjustment, making installation simple and convenient. The product is widely used for monitoring surface flow velocity in rivers, open channels, and underground culverts. When combined with a water level gauge, it can form an online flow monitoring system.
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ADCP (Acoustic Doppler Current Profiler) – Water Flow Velocity and Current Measurement System for Hydrological Monitoring
ADCP Series Horizontal Acoustic Doppler Current Profiler is an online flow velocity and discharge monitoring instrument. The series adopts broadband signal processing technology and applies the Acoustic Doppler principle to detect the movement velocity of suspended particles in water, thereby calculating the flow velocity of the water body.
The ADCP Series horizontal profiler maintains stable and reliable measurement performance and is a new-generation product designed for specialized applications. It provides real-time online output of accurate flow velocity, flow discharge, water level, and temperature data, delivering reliable data support for flood early warning systems, water transfer projects, water environment monitoring, smart agriculture, and smart water management applications.
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Optical Sediment Concentration Sensor – Suspended Sediment Monitoring Sensor for Turbidity and Water Quality Measurement
The Optical Sediment Concentration Sensor is a large-range optical sediment online monitoring instrument. It has won several national invention patents for its key technologies. With an ultra-large range of 0 to 1000 kg/m3, it can cover the suspended sediment online monitoring needs of most river basins. Its flexible installation method can adapt to the requirements of different application scenarios. It features high reliability and safety, and is equipped with a self-developed fully automatic measurement and control platform, which enables automatic positioning of vertical line measurement points to ensure the representativeness of sediment concentration data. It can conduct continuous online monitoring throughout the year.
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Ultrasonic Integrated Weather Station – Automatic Meteorological Monitoring System for Weather and Environmental Monitoring
FS-YTQX-001 Compact Integrated Weather Station is widely used for environmental monitoring. It integrates optical rainfall, wind speed and wind direction, as well as temperature and humidity sensors into a single unit. The device adopts the standard MODBUS-RTU communication protocol with RS485 signal output. The communication distance can reach up to 2000 meters, enabling data transmission to customer monitoring software or PLC/SCADA systems via RS485. It also supports secondary development.
The built-in electronic compass (optional) eliminates installation orientation requirements; only horizontal installation is required. It is suitable for mobile applications such as marine vessels and vehicle transportation, with no directional constraints during installation.
This product is widely used in applications requiring measurement of ambient temperature, wind speed, and wind direction. It is safe, reliable, aesthetically designed, easy to install, and durable.
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Tipping Bucket Rain Gauge – Automatic Rainfall Measurement Sensor for Weather and Hydrological Monitoring
This instrument serves as a primary sensor for precipitation measurement. Its core component—the tipping bucket—features a 3D streamlined design that ensures smoother water discharge while offering self-cleaning capabilities and ease of maintenance. It supports both pulse and RS-485 signal outputs, allowing for direct rainfall readings without the need for secondary calculations, making it simple and convenient to use. The instrument comprises a housing, filter, rain collector, funnel, tipping bucket, terminal block, support legs, reed switch, control box, and base. The tipping bucket utilizes an integrated positioning structure for its shaft sleeve, with the bucket mounted on bearings via its shaft. As the internal components are fully assembled prior to shipment, no on-site internal assembly is required, thereby simplifying the installation process.
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GNSS Receiver – High-Precision GNSS Positioning and Navigation System for Surveying and Geospatial Monitoring
FS-GNSS-001 Receiver is a cost-effective, low-power, highly integrated, and edge-computing GNSS monitoring receiver developed specifically for geological slope monitoring applications. It integrates multiple measurement functions, including 3D displacement, inclination, and acceleration.
It can be widely used in geological disaster monitoring, mining monitoring, reservoir dams, high slope monitoring, highway slope monitoring, and building deformation monitoring.
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Vibrating Wire Piezometer – High-Precision Pore Water Pressure Sensor for Geotechnical and Groundwater Monitoring
The FS-ZXSY-001 vibrating wire piezometer is designed for long-term installation in hydraulic structures, concrete structures, soil structures, or within soil masses to measure seepage (pore) water pressure, while simultaneously measuring the temperature at the installation point.
With optional accessories, it can be used in piezometer tubes and foundation boreholes. The instrument features a fully stainless-steel structure with a compact size of 24 × 120 mm, allowing easy installation in confined spaces. It also includes parameter identification functionality.
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Magnetostrictive Weir Flow Meter – High-Precision Open Channel Flow Measurement and Water Level Monitoring
The FS-LSYJ-001 magnetostrictive weir flow meter is designed for long-term water level monitoring in rivers, lakes, reservoirs, and dam weir structures. It is an effective device for monitoring water level and flow variations.
The instrument uses a magnetostrictive liquid level sensor for measurement, featuring high resolution, excellent stability, reliable performance, fast response, and long service life.
Key features include linear measurement, absolute position output, contact-type continuous measurement, and non-wearing operation. The sensor requires no calibration or routine maintenance. Multiple output signals are available (RS485, voltage, current), and the device is easy to install.
