Product Technology
Duweyintelli flow meters are equipped with high-precision sensing technology, meet international standards, and enable accurate monitoring and intelligent management of industrial fluid data.
Summary of key information about A-series turbine flow meters
1. Product Performance: Precise and stable, adaptable to diverse scenarios.
The A-series turbine flow meter innovatively uses the torque balance principle as its core technology and adopts a velocity-based measurement mode. With its high-precision data output, wide-range flow range adaptability, and robust environmental adaptability, it holds a significant advantage in flow measurement equipment. All performance indicators of this product strictly comply with the national standard “Turbine Flow Sensor (JB/T9246-1999),” and it can reliably function in various scenarios from industrial production to consumer metering. Specific performance advantages are as follows:
1.1 Measurement accuracy and linear performance
- The accuracy levels are covered in a tiered manner. The standard version offers two accuracy options: ±1%R and ±0.5%R. It also supports a customized ultra-high accuracy model with ±0.2%R, which can perfectly match the needs of both general production monitoring and trade settlement-level measurement.
- The linear performance is particularly outstanding, with linearity corresponding to the above accuracy levels reaching ≤0.15%, ≤0.1%, and ≤0.03%, respectively. Two-thirds of the equipment’s working section is in the stable linear region, effectively avoiding measurement deviations caused by flow fluctuations and ensuring data stability during long-term operation.
- With a wide range ratio of 10:1 to 20:1 and a dedicated extended flow range design, taking the commonly used DN15 diameter as an example, the normal operating flow range is 0.6 to 6 m³/h, which can be extended to 0.4 to 8 m³/h after the extended mode is enabled , easily coping with complex scenarios where the flow rate fluctuates greatly during production.
1.2 Structure and Adaptability
- The pipe diameters are comprehensive, which can meet the installation needs of different scenarios. The threaded connection type covers DN4~DN50, the flange connection type supports DN15~DN200, and the clamp connection type covers DN4~DN200. It is also compatible with special structural versions such as sanitary grade and high pressure grade, making it more adaptable.
- With excellent material compatibility, the core contact components are made of corrosion-resistant materials such as stainless steel 1Cr18Ni9Ti, 2Cr13, corundum Al₂O₃, and hard alloy. It can safely measure various liquids that do not react chemically with these materials. As long as media containing impurities such as fibers and particles are avoided, it can maintain long-term stable operation.
- With strong environmental tolerance, the standard model can adapt to media temperatures from -20℃ to 80℃, while the customized high-temperature version can withstand extreme temperatures from -20℃ to 150℃. It can also operate normally in ambient temperatures from -20℃ to 60℃ and relative humidity from 5% to 90%, making it suitable for complex working conditions in various industries such as petroleum, chemical, and water supply.
1.3 Electrical and Safety Performance
- Safety performance meets standards, with an explosion-proof rating of ExdIICT6 Gb. It can be directly used in hazardous environments such as chemical workshops and oil and gas stations. The protection level is no less than IP65, which can effectively resist dust and water spray. It also supports customized versions with higher protection levels according to needs.
- The power supply options are flexible and diverse, supporting both the standard +24VDC external power supply mode and the optional 3.6V 19Ah lithium battery internal power supply version. The lithium battery model does not require complicated wiring construction and can be quickly installed after unpacking, greatly improving construction efficiency.
- With outstanding anti-interference capabilities, the use of double-shielded cables for signal transmission, along with a standardized grounding design, effectively isolates electromagnetic interference in industrial settings, ensuring the stability of signal transmission. The maximum effective transmission distance of the shielded cable can reach 500 meters, meeting the long-distance data transmission needs of large factories.
2. Key Selling Points: Differentiated Advantages Highlight Practical Value
2.1 High adaptability: Seamless integration across multiple scenarios
To adapt to different installation requirements, this product offers multiple mainstream connection methods, including flanges, threads, and clamps. Flange connections strictly adhere to the national standard GB/T9113-2000, while also being compatible with international standards such as DIN (German Standard) and ANSI (American Standard). Threaded connections cover common specifications such as British Standard external threads, internal threads, and NPT threads, allowing for precise matching with existing piping systems without additional pipe modifications, significantly reducing installation and modification costs. For specific industry needs, a specially designed hygienic structure meets the aseptic requirements of the food and pharmaceutical industries, while the high-pressure version can withstand the pressure impact of industrial high-pressure conditions, truly realizing the application value of “one meter adaptable to multiple scenarios.”
2.2 Easy to operate and maintain: Lowering the barrier to entry for users
- The user interface is designed to be user-friendly. The high-definition LCD screen can clearly display instantaneous flow and cumulative flow data at the same time. Operators can complete all parameter settings by using three function keys: M (shift), S (confirm), and Z (increase). If it is necessary to clear the cumulative amount, simply press and hold the Z key for 3 seconds to achieve this quickly without complicated operations.
- The installation and maintenance process is convenient and efficient. During installation, only a straight pipe section needs to be reserved according to the specifications (minimum 10×DN upstream and minimum 5×DN downstream) to ensure measurement accuracy. It supports the design of bypass pipe, so there is no need to stop the medium delivery when the equipment needs maintenance, which truly realizes maintenance without stopping the flow. In addition, the equipment calibration cycle can be up to 1 year, which can minimize the production loss caused by downtime.
- The troubleshooting system is comprehensive, and the product manual provides detailed troubleshooting solutions. For common problems such as “no display despite flow”, the fault point can be quickly located by checking the integrity of the wiring, the rationality of parameter settings, the continuity of the coil, and the flexibility of the impeller rotation, which greatly reduces the workload of maintenance personnel.
2.3 Precise and controllable: Meeting measurement and management needs
The product incorporates an 8-segment broken-line calculation function. When the sensor exhibits slight nonlinear errors due to long-term use or changes in operating conditions, technicians can precisely calibrate the measurement accuracy by setting key frequency points and corresponding correction coefficients, further improving data accuracy. Simultaneously, the equipment can be equipped with supporting functional modules such as quantitative control and over-limit alarms, directly connecting to enterprise production management systems to achieve real-time monitoring, automatic recording, and intelligent control of flow data. It is particularly suitable for industries with stringent requirements for measurement accuracy, such as petroleum, chemical, and trade settlement.
2.4 Strong compatibility: Seamless system integration
It boasts strong compatibility in data transmission, supporting various signal types such as optically isolated pulse signals and 4-20mA analog signals. Equipped with a standard RS485 communication interface and the universal ModBusRTU communication protocol, it can seamlessly interface with various host computer systems such as computers, PLCs, and DCSs. Operators can flexibly set parameters such as communication ID (default 001), baud rate (selectable within the range of 1200-19200), parity bit, and stop bits according to actual system requirements, ensuring the stability and reliability of data transmission and perfectly adapting to the needs of modern intelligent production management systems.
3. Main functions: Covering the entire chain of flow measurement needs.
3.1 Core Measurement Functions
The core measurement function is based on the turbine rotation sensing principle. It captures the turbine rotation frequency through a built-in high-precision sensor and then performs precise calculations using the professional formula Qv=f/K (volume flow rate = signal frequency/instrument coefficient). The equipment’s instrument coefficient has extremely high stability. Taking the DN15 model as an example, its instrument coefficient is fixed at 820 times/L, corresponding to a signal frequency band of 138.3-1383Hz. It can capture subtle changes in flow rate in real time, with instantaneous and cumulative flow data updated synchronously. This meets the dynamic requirements of real-time monitoring while ensuring the accuracy of metering statistics.
3.2 Parameter Configuration and Calibration Functions
- The basic parameters support personalized adjustment, covering core parameters such as the number of decimal places in the flow data, the upper limit of the measurement range, the measurement time unit (such as m³/h, L/min, etc.), and the medium density. These parameters can be flexibly set according to the characteristics of the measured medium and the actual application scenario, improving data readability and applicability.
- Communication parameters can be precisely configured as needed, including communication ID (default value is 001), baud rate (supports multiple levels from 1200 to 19200bps), data check bits and stop bits, etc. By optimizing communication parameters, the stability of data transmission when interfacing with different systems can be effectively guaranteed, avoiding data packet loss or bit error problems.
- Equipped with a comprehensive security protection mechanism, the parameter setting function adopts a password protection mode (initial password is 0000), which effectively prevents unauthorized personnel from accidentally changing key parameters. At the same time, the system has the function of automatically exiting the setting interface after 60 seconds of inactivity, further avoiding the impact of accidental operation on the measurement work.
3.3 Signal Output and Communication Functions
- The signal output types are diverse and can be flexibly selected according to the needs of different data acquisition devices. Some models support the output of optically isolated pulse signals with 1K pull-up resistors, while some models can output 4-20mA standard current signals, which are compatible with various data loggers, controllers and other devices.
- It supports remote communication and intelligent control. With the help of the RS485 communication interface, managers can remotely read real-time data such as the cumulative flow and instantaneous flow of the equipment in the central control room. It also supports remote modification of equipment parameters and execution of operations such as clearing the cumulative flow, providing strong support for unattended automated production scenarios.
- Enhanced anti-interference design ensures data transmission quality. The four-wire version adopts a design scheme that completely isolates power and signal, and with the signal transmission method of double-shielded cable, it can effectively resist strong electromagnetic field interference in industrial sites and ensure stable signal output even in complex electromagnetic environments.
3.4 Safety and Protection Functions
- Electrical safety protection is in place. Grounding protection must be strictly followed during equipment installation and wiring. All wiring work must be carried out after the power is cut off to avoid the risk of electric shock from the source. The explosion-proof structure design can effectively prevent safety hazards when measuring flammable and explosive media and ensure production safety.
- Built-in device self-protection functions, including small signal cut-off function (which can filter out small interference signals) and anti-input oscillation delay function, can effectively avoid measurement misjudgment caused by small external interference, while reducing the ineffective wear of core components (such as impellers) and extending the service life of the equipment;
- To enhance environmental adaptability and protection, the equipment casing adopts a waterproof and dustproof structure design. The high-temperature version, through a special heat dissipation and sealing structure design, can operate stably in harsh industrial environments such as dusty, humid, and high-temperature environments, significantly reducing the impact of environmental factors on equipment performance.
In summary, the M-series turbine flow meter is supported by four core advantages: high precision, high adaptability, ease of operation, and strong compatibility. With its accurate and reliable measurement performance, flexible installation methods, convenient and efficient operation and maintenance processes, and comprehensive functional configuration, it successfully covers the flow measurement needs of numerous industries, including petroleum, chemical, metallurgy, municipal water supply, food, and pharmaceuticals. This product not only meets basic flow measurement requirements but also seamlessly integrates with modern intelligent production management systems, improving measurement efficiency while ensuring data accuracy. It is a high-quality flow measurement device that combines practicality and reliability, providing strong support for production operations and cost control across various industries.
