1. Product Performance

1.1 Measurement Range and Adaptability

• Caliber Coverage: Nominal diameters include DN15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, etc., suitable for different pipeline scenarios.
• Medium Compatibility: Capable of measuring various media such as liquids, gases, steam, and heat transfer oil. The liquid flow range is 0.6~1800m³/h, and the gas flow range is 3~11500m³/h (varies by caliber). The flow ranges of saturated steam and superheated steam correspond to different pressure levels (e.g., for DN20 saturated steam at 0.2MPa, Qmin=6.22kg/h, Qmax=56.5kg/h).
• Temperature and Pressure Adaptability: The medium temperature range covers two grades: -20~250℃ and -20~350℃. The default pressure class is PN16, and PN16+ can be ordered by agreement. The pipe section sensor has stable pressure bearing capacity, suitable for conventional industrial pressure conditions.

1.2 Accuracy and Stability

• Measurement Accuracy: Accuracy grades are 1.0, 1.5, and 2.5, with high data repeatability, meeting industrial measurement standards.
• Turndown Ratio: The standard turndown ratio is 1:10, with a maximum of 1:15. The low-signal cutoff function can be set to 0.0%~9.90% of the full scale to avoid low-flow interference.
• Anti-Interference Ability: Adopts mechanical anti-vibration processing, optimizing the circuit to filter out vibration frequencies; equipped with water hammer and lightning protection designs, the shell is corrosion-resistant and dirt-resistant, allowing a vibration acceleration of 0.2g, ensuring stable operation in complex industrial environments.
• Signal Processing: The converter supports analog and digital adaptive signal processing, with no zero drift and a wide measurement range, ensuring accurate data output.

1.3 Structure and Protection Performance

• Body Material: Made of SS304 stainless steel, SS316L can be ordered by agreement. The wetted part features a non-clogging design with no moving parts, reducing failure points.
• Protection Level: IP65 as standard, IP68 available by agreement; explosion-proof mark is ExdII CT6 Gb, suitable for flammable and explosive hazardous scenarios.
• Environmental Adaptability: Operating environment temperature is -20~55℃, relative humidity 5%~95%, atmospheric pressure 86~106Kpa. It can operate stably by avoiding direct sunlight, adapting to multiple working conditions.

1.4 Power Supply and Output Performance

• Power Supply: Supports 3.6V battery power supply or DC24V DC power supply, suitable for on-site scenarios without external power.
• Output Signals: Equipped with pulse output, 4~20mA analog output, RS485 communication, and Hart protocol output. The electrical interface is M20X1.5 or NPT1/2, adapting to different data transmission needs.

2. Core Selling Points

2.1 Non-Clogging Structure Design with Easy Maintenance

• The sensor and wetted part have no holes, gaps, or gaskets, adopting integrated stainless steel molding to reduce clogging and failure risks; the sensor is isolated from the process, with a constant meter coefficient. Maintenance does not require pipeline disassembly, which is fast and efficient.
• The diameter of the flow body is basically the same as the nominal caliber, with a flow resistance coefficient Cd=2.2, low pressure loss, and no impact on the original fluid conditions of the pipeline.

2.2 Flexible Installation Methods for Diverse Scenarios

• Rich Connection Methods: Supports ordinary clamp-on, temperature-pressure compensated clamp-on, ordinary flange connection, temperature-pressure compensated flange connection, ordinary thread connection, and temperature-pressure compensated thread connection, meeting different pipeline installation needs.
• Various Installation Attitudes: Can be installed horizontally, vertically, or obliquely. For gas measurement, the gas flow direction in vertical pipelines is not limited (it is recommended to flow from bottom to top when containing a small amount of liquid); for liquid measurement, the liquid must flow from bottom to top in vertical pipelines to ensure the pipe is full of medium.
• Reasonable Straight Pipe Requirements: The length of the upstream and downstream straight pipes is adapted to the pipeline type. The control valve is recommended to be installed 10D downstream, with strong installation adaptability, reducing on-site layout difficulty.

2.3 Temperature-Pressure Compensation and Linear Correction for Accurate Measurement

• Supports temperature-pressure compensation function, optional absolute pressure, gauge pressure, or fixed pressure sensors, and temperature sensors can be PT100, PT1000, or set temperature, adapting to the working condition compensation needs of different media.
• Equipped with 11-segment linear correction function, setting correction points from high to low frequency, which can optimize the measurement accuracy of different flow segments, especially suitable for wide-range working conditions.

2.4 Intuitive Operation and Comprehensive Functions

• Equipped with a 45X30 full-dot matrix LCD display, which can display key parameters such as instantaneous flow, total flow, pressure, and temperature, supporting multi-unit switching (e.g., m³/h, Nm³/h, Kg/h, etc.), with adjustable decimal places (0~3).
• Clear menu structure, supporting local parameter setting and RS485 remote configuration, including functional modules such as flow parameters, total flow setting, instrument calibration, output setting, and communication setting. Factory parameters are protected by passwords for safe and convenient operation.

2.5 Strong Communication Compatibility and High Integration

• Communication Protocols: Supports Modbus-RTU and Modbus-ASCII, with optional baud rates from 1200~38400 (19200 as standard), parity modes including no parity, even parity, and odd parity, and adjustable device addresses from 1~247, facilitating integration with upper computer systems.
• High-Precision 4~20mA Current Output: Supports zero-point and full-scale calibration, which can be directly connected to PLC, DCS and other control systems, meeting industrial automation needs.

3. Main Functions

3.1 Flow Measurement and Cumulative Statistics

• Real-Time Measurement: Based on the Karman vortex street principle, calculates flow velocity and flow by detecting the vortex separation frequency, displaying real-time core parameters such as instantaneous flow, flow velocity, pressure, and temperature. The damping time is adjustable from 0.1~30.0 seconds, ensuring high data stability.
• Cumulative Statistics: Automatically counts positive cumulative flow and total cumulative flow, supporting total flow reset and preset functions. The total flow unit can be L, m³, Nm³, USG, Kg, t, etc., meeting measurement traceability needs.

3.2 Temperature-Pressure Compensation and Working Condition Conversion

• For gas media, it can collect working condition parameters through temperature and pressure sensors, automatically convert to standard flow (Nm³/h), and support the setting of standard compression factor and working condition compression factor, ensuring measurement accuracy under different working conditions.
• For superheated steam measurement, the density value can be queried according to pressure and temperature, and the volume flow and mass flow can be converted through formulas, adapting to industrial steam measurement scenarios.

3.3 Alarm and Output Control

• Alarm Function: Supports high alarm (1.00%~99.00% of full scale) and low alarm (0.00%~99.00% of full scale) settings. When the flow exceeds the threshold, the alarm contact closes to output a signal, promptly warning of abnormal working conditions.
• Output Control: The pulse output equivalent can be set (units: L/P, USG/P, Kg/P, etc.), and the pulse width is adjustable from 0~1000ms (duty cycle 1:1 when 0ms); the maximum frequency output is 100.0~5000.0Hz, outputting in proportion to the instantaneous flow and full scale, adapting to flow control scenarios.

3.4 Calibration and Correction Functions

• Current Calibration: Supports 4mA zero-point calibration (range 3.0~5.0mA) and 20mA full-scale calibration (range 19.0~21.0mA). Automatic calibration is completed by inputting the measured value of the multimeter, ensuring the accuracy of current output.
• Temperature and Pressure Calibration: The measurement loop can be calibrated through measured resistance values or standard temperature and pressure values, ensuring the accuracy of temperature-pressure compensation data.
• Meter Coefficient Setting: Supports modifying the meter coefficient K after actual flow detection. The number of pulses output per cubic meter can be accurately adjusted to optimize measurement accuracy.

3.5 Data Communication and Storage

• Data Transmission: Through the RS485 interface, remote reading of instantaneous flow, total flow, temperature, pressure and other parameters (corresponding to register addresses 0x01~0x24) is supported, with continuous address reading, facilitating centralized data management.
• Parameter Storage: Factory parameters and user-set parameters are not lost after power failure, supporting factory reset to ensure stable operation of the equipment.