1. Product Performance 1.1 Measurement Coverage Range - Pipe Diameter Adaptability: Flow sensors cover multiple specifications. Clamp-on sensors (normal temperature/high temperature types) are suitable for DN15-DN6000, insertion sensors for DN50-DN6000, and pipe section sensors cover a full range from micro-caliber DN6 to DN2000, meeting different pipeline scenarios in industrial and civil applications. - Temperature Adaptability: The fluid temperature adaptation range is -30℃~160℃. With a temperature sensor, the temperature measurement range is extended to -40℃~160℃, compatible with high and low temperature working conditions. - Fluid Adaptability: Supports various common fluids such as water, gasoline, diesel, ethylene glycol, and methanol. Relying on the built-in database of sound velocities and viscosities of different fluids, it ensures measurement accuracy under different media. 1.2 Measurement Accuracy and Stability - Signal Guarantee: Adopts multi-channel detection technology. The signal strength is indicated by a scale of 00.0~99.9 and must be ≥60.0 for normal measurement. The signal quality Q value is indicated by a scale of 00~99 and must be ＞60 for normal operation, among which 60~75 is "Poor", 75~80 is "Good", and ＞80 is "Excellent". Dual indicators ensure signal stability. - Time Ratio Control: The transmission time ratio is strictly controlled between 97%~103%, accurately matching the measurement parameters with the actual installation distance, resulting in small long-term operation errors and strong data repeatability. - Anti-Interference Design: Equipped with factory-customized special ultrasonic cables, the outer shielding mesh + red and black core wire structure reduces signal attenuation and distortion. The host, sensor, and cable shielding layer are all grounded, combined with an isolated power supply, effectively resisting electromagnetic interference from inverters, high-voltage lines, GSM base stations, etc. 1.3 Pressure Bearing and Protection Capabilities - Pressure Rating: Pipe section sensors offer multiple pressure options: 0.6MPa, 1.0MPa, 1.6MPa, 2.0MPa, 2.5MPa, and 4.0MPa. Insertion sensors have a maximum pressure bearing capacity of 1.6MPa, and can be customized for overpressure. Clamp-on sensors do not contact the fluid, and their pressure bearing capacity is consistent with that of the pipeline itself. - Protection Standard: The integrated host has an IP68 protection rating and can work immersed in water up to 2 meters. The explosion-proof host has an explosion-proof grade of DIIBT5, suitable for flammable and explosive hazardous scenarios, meeting the installation requirements of complex environments. 1.4 Installation and Environmental Adaptability - Installation Flexibility: Supports multiple installation methods such as pipeline fixing, wall fixing, underwater installation, guide rail installation (modular type), and instrument panel installation (panel-mounted type). Split-type and integrated hosts combined with different sensors are suitable for various scenarios such as ground, underground, humid, and explosion-proof environments. - Power Supply and Environment: The working voltage is compatible with AC85-264V (waterproof power adapter) and DC8-36V, operating stably under harsh temperature and humidity conditions. The host can work normally by avoiding direct sunlight, adapting to the complex environment of industrial sites. - Cable Length: The maximum length of the special cable between the host and the sensor is 200 meters. Wiring can be done in trunking or conduit, and it needs to be away from power and high-voltage cables, balancing installation convenience and signal stability. 2. Core Selling Points 2.1 Rich Sensor System with Strong Adaptability - Clamp-on Sensors: Divided into normal temperature types (S1/M1/L1) and high temperature types (S1-HT/M1-HT/L1-HT). No flow interruption is required for installation, fixed with steel belts (DN15-500) or steel wire ropes (＞DN500), suitable for DN15-DN6000 pipe diameters. With an IP68 protection rating, it is waterproof by potting silica gel after wiring, featuring convenient installation without damaging pipeline integrity. - Bracket-type Sensors: Including normal temperature types (HS1/HM1/EBX) and high temperature types (HS1-HT/M1-HT/EBX-HT). No flow interruption is needed either. The extended EBX is suitable for large pipe diameters ＞DN300, meeting the non-intrusive measurement needs of large-diameter pipelines. - Insertion Sensors: Cover ATC-1 standard type, ATC-2 extended type, and ATP-1 parallel type. Support under-pressure drilling installation, with a polished rod structure to prevent jamming, suitable for DN50-DN6000 pipe diameters. The signal can be optimized by adjusting the insertion depth and emission direction, ensuring high measurement accuracy. - Pipe Section Sensors: Divided into micro-caliber (DN6-10), small-caliber (DN15-40), and large-caliber (DN50-2000). Support thread, flange, and quick connection, with strong installation tightness and stable pressure bearing capacity, suitable for high-pressure and high-precision measurement scenarios. 2.2 Flexible Host Configuration to Meet Diverse Installation Needs - Split-type Host: Includes four types. The wall-mounted type is installed on the wall with 4 Φ6mm expansion bolts, suitable for conventional scenarios. The modular type supports 35mm guide rail installation, with a liftable buckle design for easy disassembly. The panel-mounted type has a compact size (91×65.5×96mm) and is equipped with a 5-32KΩ pull-up resistor, suitable for instrument panel integration. The explosion-proof type is specially designed for hazardous environments, with the same wiring as the wall-mounted type, fixed with 4 Φ8mm expansion bolts. - Integrated Host: Directly installed on the pipeline, with a potting waterproof design and an IP68 protection rating, supporting underwater work up to 2 meters. The power supply is DC24V, and it can be equipped with an AC85-264V waterproof power adapter, suitable for special scenarios such as humidity and underwater. 2.3 Integrated Flow and Heat Measurement with High Cost-Effectiveness - The basic configuration (host + ultrasonic sensor) can realize flow measurement. Adding a temperature sensor can directly upgrade it to a heat meter without additional equipment. Temperature sensors include clamp-on (CT-1), insertion (TCT-1), under-pressure insertion (PCT-1), and small-caliber insertion (SCT-1). Clamp-on and under-pressure insertion types do not require flow interruption for installation, while small-caliber insertion types (≤DN40) do, adapting to heat measurement needs of different pipe diameters. - Supports 3-wire/4-wire PT100 platinum resistance wiring. The heat calculation method can be set through the menu, meeting the dual measurement needs of flow and heat in scenarios such as central heating and industrial heat exchange. 2.4 Convenient and Intuitive Operation with Comprehensive Functions - Display and Keyboard: Equipped with a 2×20 dot matrix backlit LCD display, supporting backlight time and contrast adjustment for clear reading in dimly lit environments. Two types of keyboards are available: 16-key and 4-key. The 16-key keyboard supports quick digital input and menu shortcut operation (MENU + two-digit number to directly access the corresponding window), while the 4-key keyboard is simple and easy to use, adapting to different operating habits. - Menu System: Built-in more than 100 menu windows, clearly classified by function (measurement value display, parameter setting, communication setting, etc.). Supports quick setting of 7 core measurement parameters (pipeline size, material, fluid type, etc.), enabling novices to get started quickly. It also supports functions such as language selection, password protection, and factory reset, with flexible operation. 2.5 Rich Communication and Output Interfaces with Strong Integration - Communication Capability: Comes with an isolated RS485 interface, supporting MODBUS (ASCII/RTU), M-BUS, FUJI extended protocol, and protocols of other domestic manufacturers. Communication address and serial port parameters can be set through the menu, facilitating integration with upper computer systems. - Output Interfaces: Equipped with active 4-20mA analog output (accuracy better than 0.1%), OCT open-collector output (DC60V/100mA), and relay output (AC125V/DC28V/1A). Supports flow pulse output, quantitative control signal output, alarm signal output, etc., meeting diverse needs such as data transmission and equipment control. 3. Main Functions 3.1 Accurate Flow Measurement and Cumulative Statistics - Real-time Measurement: Through menu windows M00-M09, core data such as instantaneous flow, fluid velocity, fluid temperature, and pipeline pressure can be viewed in real time. It supports switching between multiple units (such as cubic meters per hour, liters per minute, etc.). Window M04 can also display a 4-20mA bar chart to intuitively present flow changes. - Cumulative Statistics: Automatically counts positive cumulative flow, negative cumulative flow, and net cumulative flow. It supports accumulator switch (M24), reset (M25), and manual correction (M26) operations. The cumulative multiplication factor (M23) can be set to adapt to the statistics of different flow magnitudes. It has a flow compensation function after power failure (M27) to avoid data loss, meeting the needs of meter reading and measurement traceability. 3.2 Heat Measurement Function - Measurement Principle: Collects temperature data through PT100 temperature sensors installed on the supply and return water pipelines, and calculates heat flow and total heat combined with flow data. Data can be viewed through windows M06 (heat flow/total heat) and M07 (heat flow/4-20mA bar chart). - Installation and Setting: The installation of temperature sensors can choose flow interruption (insertion type, small-caliber insertion type) or no flow interruption (clamp-on type, under-pressure insertion type). The under-pressure installation kit needs to be ordered separately. It supports 3-wire/4-wire wiring methods. Parameters such as heat flow unit, heat multiplication factor, temperature source selection, and heat calculation method can be set through menu M40-M49 to ensure accurate heat measurement. 3.3 Parameter Correction and Calibration to Ensure Long-Term Accuracy - Low Flow Cutoff: Set the low flow cutoff value through menu M31 (default 0.03m/s). When the absolute value of the flow velocity is lower than this value, it is regarded as "0", avoiding false accumulation due to measurement errors of the flow meter when the actual flow is "0" without affecting the accuracy of normal flow measurement. - Zero Calibration: When the pipeline is filled with static water but the flow meter displays a non-zero instantaneous flow, use menu M32 for static zero adjustment, and do not perform any operations during the reset process. The zero point can also be manually set through menu M34 to ensure zero point accuracy. - Instrument Correction: When the flow meter has errors due to long-term operation, it can be corrected by modifying the coefficient (scale factor) through menu M35, entering the ratio of the true value to the measured value. The instrument coefficient must be input according to the actual calibration results. It supports 11-segment linearization correction (menu M36, password 12345), and the measurement accuracy can be optimized through multi-point calibration data. To cancel the linearization correction function, simply input "0" for the number of linear segments in menu M36. 3.4 Quantitative Control Function - Built-in batch controller, which can start quantitative control through keyboard operation or analog input signal (＞2mA is "1" state, 0mA is "0" state). The quantitative value is input in menu M37, and the batch controller starts automatically after input. - Output Control: Select "As quantifier output" through OCT output (menu M65) or relay output (menu M67). When the set quantitative value is reached, a control signal is output to realize automatic start and stop, suitable for batch transportation scenarios such as chemical industry, water supply, and oil product transportation. 3.5 Alarm and Status Monitoring - Alarm Setting: Supports setting alarm thresholds for parameters such as flow, temperature, and pressure (menu M71, M72). When the parameters exceed the thresholds, an alarm signal is sent through the buzzer (set in menu M68) or output interface to promptly warn of abnormal conditions. - Status Monitoring: Real-time measurement status can be viewed through menu M90-M93. M90 displays signal strength and signal quality, M91 displays transmission time ratio, M92 displays total propagation time difference, and M93 displays fluid sound velocity, facilitating quick troubleshooting of installation or parameter setting problems. 3.6 Data Storage and Query - Storage Function: Supports setting of timed data output (menu M54), which can set the data storage interval and output direction (M55), and automatically store current data such as flow, heat, and working time to meet the needs of long-term data recording. - Historical Query: Historical data can be queried through menu M80-M87, including current/historical flow (M80/M81), current heat (M82), working time timing/query (M84/M85), and power failure information (M86/M87), facilitating traceability of equipment operation status and measurement data. 3.7 Communication and Data Transmission - Communication Parameter Setting: Set communication address code (M50), RS485 serial port parameters (M51), communication protocol (M52), timer time (M53), etc., through menu M50-M59 to ensure stable communication with the upper computer. - Data Transmission: Supports reading various data under MODBUS protocol, including instantaneous flow, cumulative flow, temperature, heat, etc. (corresponding to registers 0001-0036). The flow signal can be output through a 4-20mA current loop (set the flow values corresponding to 4mA and 20mA through menu M62-M63), supporting flow direction identification (4-20mA for forward direction, 0-4mA for reverse direction), adapting to different data transmission scenarios.