1. Product Performance

1.1 Measurement Range and Adaptability

• Caliber Coverage: Pipeline PTFE lining is suitable for DN10~DN500, pipeline rubber lining for DN65~DN1200, and special specifications can be customized to meet the needs of different pipeline scenarios.
• Flow Velocity and Flow Range: The flow velocity measurement range is 0.1~15m/s with a resolution of 0.5mm/s. The flow range varies by caliber: DN10 has a lower limit of 0.028m³/h and an upper limit of 3.39m³/h, while DN1600 has a lower limit of 723m³/h and an upper limit of 86815m³/h, with a turndown ratio of 150:1.
• Medium and Conductivity Requirements: Suitable for conductive liquids such as acids, alkalis, salt solutions, sludge, ore pulp, and sewage. The measured fluid conductivity should be ≥5μS/cm (integrated type), and most water-based media (200~800μS/cm) can be measured accurately.
• Temperature Adaptability: Ordinary rubber lining (-20~+60℃), high-temperature rubber lining (-20~+90℃), PTFE lining (-20~+100℃), high-temperature PTFE lining (-20~+180℃), adapting to different temperature conditions.

1.2 Accuracy and Stability

• Measurement Accuracy: Pipeline type has accuracy classes of 0.5 and 1.0; repeatability error is ±0.25% of the measured value. Accuracy varies by caliber and flow velocity range: DN10~DN20 has ±0.5%FS at 0.5~10m/s, while DN700~DN1600 has ±2.0%R at 10~15m/s.
• Anti-Interference Ability: Input impedance of 750Ω, common-mode rejection ratio (CMRR) ≥100dB, and 50Hz/60Hz interference suppression ≥90dB. Equipped with an ultra-low EMI switching power supply, it has excellent EMC performance, suitable for complex industrial electromagnetic environments.
• Excitation Stability: Supports low-frequency square wave excitation (1/16, 1/20, 1/25 power frequency) and high-frequency square wave excitation (1/2 power frequency, optional). Excitation current can be selected as 125mA, 187.5mA, 250mA, or 500mA, with stable magnetic field and strong measurement repeatability.

1.3 Pressure Bearing and Protection Performance

• Rated Working Pressure: DN10~DN250 ≤1.6MPa, DN300~DN1000 ≤1MPa, DN1200~DN1600 ≤0.6MPa; high pressure can be customized to meet conventional industrial pressure requirements.
• Protection and Explosion-Proof: Operating environment temperature -25℃~+60℃, relative humidity 5%~95%; protection level adapted to industrial scenarios, explosion-proof mark Exd ia[ia Ga] q IIC T6 Gb, suitable for flammable and explosive hazardous environments.
• Structural Design: No moving or flow-blocking parts in the pipeline, no additional pressure loss during measurement; adopts non-uniform magnetic field technology and special magnetic circuit structure, featuring small size, light weight, and easy installation.

1.4 Power Supply and Output Performance

• Power Supply: Supports AC85~265V (45~63Hz) or DC20~36V, with total power consumption <20W. Wide voltage adaptation range, suitable for different power supply scenarios.
• Output Signals: 4~20mA current output (load resistance 0~750Ω), 0~10mA current output (load resistance 0~1.5kΩ); digital frequency output 1~5000Hz (opto-isolated, maximum 250mA load current); supports RS485, RS232, Hart, Modbus and other communication protocols, optional GPRS and PROFIBUS communication.

2. Core Selling Points

2.1 Interference-Free Measurement, Suitable for Diverse Media

• Measurement results are independent of flow velocity distribution, fluid pressure, temperature, density, viscosity and other physical parameters, only related to fluid conductivity. After calibration with ordinary water, it can measure other conductive media without correction.
• Optional Lining and Electrode Materials: Linings include neoprene, polyurethane rubber, PTFE (F4), etc.; electrodes include molybdenum-containing stainless steel, Hastelloy, titanium, tantalum, platinum, etc. They can be accurately adapted according to medium corrosiveness and abrasiveness to extend service life.

2.2 Flexible Installation, Suitable for Complex Scenarios

• Connection Method: Flange connection conforming to HG/20592 standard, adapting to conventional industrial pipeline installation; supports integrated (circular/square housing) and split (wall-mounted) installation, with split-type cable extendable up to 100m.
• Pipeline Adaptation: Can be installed horizontally, vertically or obliquely; for liquid-solid two-phase fluids, vertical installation is recommended to ensure uniform lining wear. Straight pipe requirements: upstream ≥10DN, downstream ≥5DN; reducer with center cone angle ≤15° can be regarded as part of the straight pipe, reducing installation layout difficulty.
• Grounding Requirements: Converter housing grounding resistance ≤10Ω; sensor flange, grounding ring and pipeline flange must be reliably grounded to ensure measurement stability and safety.

2.3 Convenient Operation, Humanized Functions

• Display and Operation: High-definition backlit LCD display, supporting Chinese, English and customized languages; equipped with panel keyboard and infrared handheld remote control keyboard for non-contact operation of all functions at a distance, facilitating commissioning and maintenance.
• Flexible Parameter Setting: Supports on-site online range modification; 56 parameters managed by hierarchical passwords (6 levels), including flow unit, damping time, alarm threshold, communication parameters, adapting to different usage needs.
• Power Failure Protection: Built-in non-volatile clock, capable of recording 16 power failure events and compensating for missing flow; hourly total flow recording function adapts to time-of-use metering system with strong data traceability.

2.4 Alarm and Self-Diagnosis, High Reliability

• Multiple Alarm Functions: Supports empty pipe alarm (without additional electrodes), high/low limit alarm, and excitation alarm. Alarm output adopts opto-isolation (isolation voltage >1000VDC) to promptly warn of abnormal conditions.
• Self-Diagnosis Ability: Automatically detects faults in excitation circuit and signal circuit, displaying fault codes (e.g., FQH for high flow alarm, FGP for empty pipe alarm) for quick troubleshooting; adopts SMD components and SMT technology, ensuring high circuit reliability.

3. Main Functions

3.1 Flow Measurement and Cumulative Statistics

• Real-Time Measurement: Based on Faraday's electromagnetic induction law, accurately measures instantaneous flow and velocity. 9 display units available (e.g., L/h, m³/h, T/h) with adjustable decimal places (0~3).
• Cumulative Statistics: Built-in three accumulators for positive total, reverse total and difference total; pulse output equivalent optional (0.001~1.000m³/cp, L/cp, T/cp); total reset supported (with password), meeting metering and statistical needs.

3.2 Special Measurement and Compensation Functions

• Empty Pipe Measurement: Realizes continuous empty pipe measurement and fixed-value alarm without additional electrodes; when fluid level is below electrodes, analog and digital outputs are set to zero to avoid false measurement.
• Spike Suppression: For slurry measurement (e.g., pulp, ore pulp), spike suppression algorithm can be activated. By setting suppression coefficient (0.010~0.800m/s) and suppression time (400~2500ms), interference from solid particles is overcome.
• Flow Correction: Supports 4 flow correction points with correction coefficients 0.0000~1.9999, optimizing measurement accuracy across different flow velocity ranges for wide-range applications.

3.3 Alarm and Output Control

• Alarm Output: High/low limit alarm thresholds adjustable within 0%~199.9% of full scale; alarm output is Darlington transistor output (max 36VDC, 250mA load current), capable of linking with external equipment.
• Analog Output: 4~20mA current output with basic error 0.1%±10μA, supporting zero and full-scale correction, linearity ≤0.1%, directly connectable to PLC and DCS systems.
• Digital Output: Frequency output and pulse output are mutually exclusive. Frequency output is proportional to flow percentage (F=measured value/full scale × frequency range); pulse output is used for total accumulation, adapting to different control and metering scenarios.

3.4 Communication and Data Management

• Communication Function: Supports Modbus-RTU, Hart and other protocols; RS485 communication baud rate 300~38400 optional, parity modes including no parity, odd parity and even parity; remote reading of measurement data and parameter modification supported.
• Data Storage: Positive, reverse and difference totals are stored long-term without power failure; coefficient change records are traceable, facilitating equipment maintenance and management.