SOLIDAT SLDL5250 Series Open Channel Flow Monitor: High-Precision Solution for Complex Industrial Measurement
Mar 16, 2026| As a professional industrial process measurement and control instrument brand, SOLIDAT has always adhered to the concept of "Solid Benefits, Reliable Technology". The SLDL5250 series, as a core product of the brand, has won wide recognition in the global market with its high precision, multi-function and strong adaptability, becoming the first choice for industrial measurement in petroleum, chemical, electric power, metallurgy, water treatment and other fields.
Advanced Core Technology, Stable and Accurate Measurement
the SLDL5250 Series Open Channel Flow Monitor adopts mature Frequency Modulated Continuous Wave (FMCW) technology and proprietary SoltaSmart echo processing algorithm, which fundamentally ensures the accuracy and stability of measurement. The instrument transmits linear frequency-modulated continuous wave signals stably in the working frequency band. When the signals encounter the surface of the measured medium (solid or liquid) or the channel boundary, they are reflected to form echo signals. The high-speed processing module of the instrument real-time compares the frequency difference between the transmitted wave and the echo wave, and converts it into precise distance, liquid level, level difference or open channel flow data through professional calculation.
Equipped with a high-performance advanced microprocessor, the instrument can effectively identify and process echo signals under complex working conditions such as uneven medium surface, strong turbulence and multiple obstacles. The built-in "False Echo Learning" intelligent function can automatically learn and record the characteristic signals of false echoes generated by tank walls, flanges, brackets and other structures, accurately lock the real echo of the measured medium, and avoid measurement errors caused by environmental interference.

Flexible Configuration, Adapt to Diverse Scenarios
the SLDL5250 Series Open Channel Flow Monitor is designed with a split structure (probe + independent controller), which is flexible and convenient for installation. The probe can be installed at the on-site measuring point (such as tanks, channels, reaction kettles), while the controller can be installed in the on-site operation room or central control room with a good environment, which greatly facilitates on-site operation and daily maintenance.
In terms of sensor configuration, the product provides two high-frequency options: 80GHz and 120GHz. Customers can choose the appropriate sensor according to the actual application scenarios such as measurement range, medium type and environmental interference. The 80GHz sensor has a wide transmission angle (8°), which is suitable for large-area measuring points; the 120GHz sensor has a narrow transmission angle (3°), which has strong anti-interference ability and is suitable for small measuring points and complex obstacle scenarios. The ultra-wide measuring range of 0.05-120m covers the measurement needs of micro-distance and long-distance, and can be applied to the measurement of various solid and liquid media.
Strong Environmental Adaptability, Durable and Reliable
The SLDL5250 series has excellent environmental adaptability, and the probe and controller are designed with IP68 high protection level, which can resist long-term immersion, dust accumulation, rain and snow erosion, and is suitable for harsh industrial on-site environments. The process temperature adaptability ranges from -40°C to 95°C (different models), and the process pressure ranges from -0.7 MPa to 5 MPa, which can adapt to negative pressure, normal pressure and positive pressure working environments, and is widely used in high-temperature, high-pressure and corrosive industrial scenarios.
The transducer housing is made of PU/PC/PTFE/Ceramic/316 materials, which has excellent corrosion resistance and wear resistance, and can be used stably in various corrosive media environments. At the same time, the product strictly follows international industrial production standards for R&D and production, has passed a number of international authoritative certifications such as CE, EMC, FCC part 15, and ensures the reliability and stability of long-term continuous operation.
Easy Operation and Maintenance, Efficient and Time-Saving
The SLDL5250 series focuses on humanized design, supports on-site non-stop debugging, and does not need to fill or empty the measured container/channel during debugging and calibration, avoiding the impact of debugging on the industrial production process and greatly saving on-site operation and maintenance time. The instrument supports multi-language operation interfaces (including Chinese and English), which adapts to the operation habits of technicians in different countries and regions.
In addition, the product is equipped with real-time echo and false echo display functions, so that on-site debugging personnel can visually view signal waveforms and characteristic data, which is convenient for rapid fault analysis, parameter adjustment and daily maintenance. The rich communication and signal output modes (supporting HART, Modbus, Profibus PA, GPRS/CDMA remote wireless communication, Bluetooth local communication, etc.) make it easy to connect with DCS, PLC and other industrial control systems, realizing on-site and remote data transmission and control.

Multi-Functional Integration, Wide Application Fields
The SLDL5250 series integrates multiple measurement functions in one machine, supporting single-probe measurement of liquid level, distance and open channel flow, as well as dual-probe high-precision level difference measurement. It can be widely used in petroleum, chemical, electric power, metallurgy, water treatment, grain and oil, building materials and other industrial fields, providing efficient, accurate and stable process measurement solutions for customers' production and operation.
About SOLIDAT
SOLIDAT INDUSTRIAL HOLDINGS LIMITED is a professional enterprise focusing on the R&D, production and sales of industrial process measurement and control instruments. With a professional R&D team and advanced production and testing equipment, the company is committed to providing high-quality, high-performance and high-reliability measuring instruments for global industrial customers. Our products cover radar level gauges, flow meters, pressure gauges and other categories, and we provide professional pre-sales technical consultation, on-site installation guidance and after-sales maintenance services to solve all-round measurement problems for customers.
Contact Us
If you are looking for a high-precision, reliable split-type radar measuring instrument for complex industrial working conditions, the SLDL5250 series is your ideal choice. Welcome to contact us for technical consultation and product customization needs!
Official Website: www.solidAT.net
China Office Telephone: +86 10 86468485


