06/07/2026

Electromagnetic Flow Meters | Kaifeng XinYa Instrument

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      Product Catalog Hierarchy

      H1: Electromagnetic Flow Meters & IoT Solutions

      H2: Industrial Electromagnetic Flow Meters

      H3: SF-E Standard Electromagnetic Flow Meter
      • Application: General industrial fluid measurement for conductive liquids
      • Key Features: ±0.2% accuracy, DN15-DN3000 pipe diameter range, bidirectional measurement
      • Output Signals: 4-20mA, frequency, pulse
      • Protection Rating: IP68 (sensor), IP65/IP66/IP67 (converter)
      • Configuration: Integral or split type deployment
      • Technical Advantage: Variable frequency bidirectional constant current excitation system with VFC conversion
      H3: Battery-Powered Remote Flow Meter
      • Application: Remote monitoring locations without power infrastructure
      • Key Features: Long-term battery operation, IP68 submersible rating, 120-month data retention
      • Connectivity: GPRS, RS485 wireless transmission
      • Special Functions: Heat measurement via enthalpy calculation, automatic sleep mode
      • Ideal For: Water distribution networks, remote pumping stations, off-grid installations
      H3: Slurry Electromagnetic Flow Meter
      • Application: High solid content fluids including pulp, coal slurry, mineral tailings
      • Key Features: Wear-resistant linings (Polyurethane, PFA, Ceramics), variation restraint algorithm
      • Special Design: Integrated grounding electrodes, cuspidal disturb suppression
      • Lining Options: Ceramics (DN15-150), abrasion-resistant rubber compounds
      • Technical Innovation: Spike signal filtering for stable measurement in abrasive environments
      H3: SF-C Insertion Electromagnetic Flow Meter
      • Application: Large-diameter pipelines (up to DN3000) for municipal and industrial use
      • Key Features: Cost-effective installation, adjustable insertion depth, ball valve mounting
      • Material: High-grade stainless steel construction
      • Installation Benefit: Hot-tap capability without flow interruption
      • Measurement Position: Configurable to half or quarter pipe diameter
      H3: SF-W Food Safety Flow Meter
      • Application: Food, beverage, pharmaceutical industries
      • Key Features: Hygienic sanitary design, food-grade material compliance
      • Standards: Food safety standard construction to prevent contamination
      • Special Design: Anti-stagnation geometry for bacterial growth prevention

      H2: IoT Monitoring Solutions

      H3: Instrument IoT Big Data Platform
      • Functionality: Centralized device management and real-time data analytics
      • Data Visualization: 60-point historical curve tracking, 5-second default refresh rate
      • Communication Protocols: RS485, RS232, HART, GPRS, Bluetooth, WiFi (STA/AP modes)
      • Integration: RESTful API support via HTTP GET/POST with JSON format
      • Platform Access: Web-based management at 124.95.128.250
      • Security: Multi-level password protection (6 security grades)

      H2: Products by Application

      H3: Manufacturing Industry Solutions

      • Automotive welding production line flow monitoring
      • Electronics PCB and semiconductor fluid processing
      • Food & beverage hygienic processing systems
      • Machinery equipment coolant and lubricant measurement

      H3: Energy & Chemical Solutions

      • Oil & gas refining facility measurement
      • Metals & mining tailings and slurry management
      • Power plant cooling water and heat measurement
      • Chemical processing corrosive fluid handling

      H3: Municipal & Public Sector Solutions

      • Water distribution network monitoring
      • Heat measurement for district heating systems
      • Wastewater treatment flow tracking
      • Remote water resource management

      Knowledge Center

      H2: Technical Resources

      H3: Electromagnetic Flow Meter Fundamentals

      What is an Electromagnetic Flow Meter?
      An electromagnetic flow meter measures conductive liquid flow based on Faraday’s Law of Electromagnetic Induction. When conductive fluid passes through a magnetic field, an induced voltage proportional to flow velocity is generated between electrodes.

      How Do Electromagnetic Flow Meters Work?
      Square wave pulse excitation generates a stable magnetic field. The induced electromotive force is amplified via high-input-impedance circuits and converted to standard signals (4-20mA, pulse, frequency) through VFC technology.

      H3: Selection Guide

      Choosing the Right Electromagnetic Flow Meter

      • Pipe Size: DN15 to DN3000 coverage – standard meters for DN15-DN1200, insertion type for larger diameters
      • Fluid Properties: Conductivity >5μS/cm minimum, temperature range based on lining material
      • Accuracy Requirements: ±0.5%, ±0.3%, or ±0.2% options available
      • Installation Environment: IP68 for submersible, IP65-IP67 for standard industrial environments
      • Power Availability: AC-powered for standard installations, battery-powered for remote locations

      H3: Installation Best Practices

      Pre-Installation Inspection

      • Verify pipe diameter matches flowmeter nominal diameter (DN)
      • Confirm flange standard compliance (GB/T9124.1-2019)
      • Check grounding requirements for non-conductive pipes
      • Ensure 10-minute preheating period before operation

      Optimal Installation Positions

      • Install in fully filled pipe sections to avoid empty pipe errors
      • Maintain straight pipe runs: 5D upstream, 2D downstream minimum
      • Mount with electrodes on horizontal plane to avoid air bubble interference
      • Consider insertion depth for SF-C models (half or quarter diameter)

      H3: Maintenance and Troubleshooting

      Common Diagnostic Alerts

      • Empty Pipe Alarm: Automatic detection when pipe is not fully filled
      • Excitation Circuit Break: System detects coil continuity issues
      • Flow Range Overflow: Signal exceeds configured measurement range

      Maintenance Procedures

      • Regular inspection of electrode surface condition
      • Verification of grounding electrode continuity
      • Communication module connection checks (RS485/GPRS)
      • Factory-calibrated circuit board replacement for accuracy preservation

      H3: Accuracy and Performance

      Measurement Accuracy Specifications

      • Standard accuracy: ±0.5% (general industrial applications)
      • High accuracy: ±0.3% (process control requirements)
      • Precision accuracy: ±0.2% (custody transfer and critical processes)
      • Velocity range: 0.1 to 10 m/s
      • Repeatability: Superior to ±0.1%

      Factors Affecting Accuracy

      • Fluid conductivity (minimum 5μS/cm)
      • Flow profile development (straight pipe requirements)
      • Electrode fouling or coating
      • Ambient electromagnetic interference
      • Process temperature variations

      H3: Comparison Content

      Electromagnetic vs. Ultrasonic Flow Meters
      | Feature | Electromagnetic | Ultrasonic |
      |———|—————-|————|
      | Fluid requirement | Conductive liquids | Any liquid |
      | Accuracy | ±0.2%-±0.5% | ±0.5%-±2% |
      | Pressure drop | None (no obstruction) | None (non-contact) |
      | Installation | Inline mounting | Clamp-on or inline |
      | Cost | Moderate | Higher for inline type |
      | Best for | Conductive process fluids | Clean water, hydrocarbons |

      Integral vs. Split Type Configuration

      • Integral Type: Sensor and converter combined in single housing – compact for space-limited installations
      • Split Type: Separate sensor and converter with cable connection – ideal for harsh environments or remote display requirements

      H2: Industry Applications

      H3: Water & Wastewater Management

      Battery-powered meters deployed in remote water distribution networks enable 120-month historical data retention with GPRS connectivity for centralized monitoring across municipal infrastructure.

      H3: Mining & Minerals Processing

      Slurry meters with polyurethane linings and spike suppression algorithms maintain stable measurement in coal-water slurry applications despite high solid-grain friction and abrasive conditions.

      H3: Food & Pharmaceutical Production

      SF-W sanitary design meters comply with food safety standards, preventing fluid stagnation and bacterial growth in hygienic processing environments.


      H2: FAQ – Frequently Asked Questions

      Q: What is the minimum conductivity required for electromagnetic flow meters?
      A: The fluid must have a minimum conductivity of 5μS/cm. This includes most water-based solutions, acids, alkalis, and slurries. Pure water, hydrocarbons, and gases cannot be measured.

      Q: Can electromagnetic flow meters measure bidirectional flow?
      A: Yes, all Kaifeng XinYa electromagnetic flow meters feature automatic bidirectional measurement capability, tracking both forward and reverse flow with separate accumulation registers.

      Q: How long do battery-powered flow meters operate without replacement?
      A: Battery life depends on measurement frequency and communication intervals. With optimized sleep mode operation, meters can function for multiple years. The system stores 120 months of accumulated data internally.

      Q: What maintenance is required for electromagnetic flow meters?
      A: Minimal maintenance is required. Periodic checks include electrode cleaning, grounding verification, and communication module inspection. Factory-calibrated replacement boards maintain accuracy without field recalibration.

      Q: Can meters be installed in submerged locations?
      A: Yes, sensors rated IP68 can be installed in submerged environments up to 3 meters water depth. This is ideal for underground vaults and submersible pump stations.

      Q: How are slurry meters protected from wear?
      A: Slurry-specific models feature wear-resistant linings (Polyurethane, PFA, or Ceramics) and implement variation restraint algorithms to filter interference from solid particle impacts on electrodes.

      Q: What communication protocols are supported?
      A: Standard protocols include RS485, RS232, HART, MODBUS-RTU. Wireless options include GPRS, Bluetooth, and WiFi (STA/AP modes). The IoT platform accepts RESTful API calls with JSON formatting.

      Q: What is the typical installation requirement for straight pipe runs?
      A: Minimum requirements are 5 times pipe diameter (5D) upstream and 2 times pipe diameter (2D) downstream to ensure fully developed flow profiles for accurate measurement.


      About Kaifeng XinYa Instrument Co., Ltd.

      H2: Company Overview

      Corporate Profile
      Kaifeng XinYa Instrument Co., Ltd. is an industrial instrumentation and IoT solutions provider specializing in high-precision electromagnetic flow measurement systems integrated with cloud-based big data platforms.

      Headquarters Location
      No.1, Ba Qing Wu Road, Jinming Avenue, South Section
      Kaifeng Demonstration Area, Henan, China

      Business Coverage
      Global industrial markets requiring high-precision fluid measurement and IoT monitoring solutions across manufacturing, energy, municipal, and food safety sectors.


      H2: Certifications & Standards Compliance

      Industry Standards

      • JB/T 9248-2015: Electromagnetic Flowmeter Execution Standard
      • GB/T 9124.1-2019: Steel Pipe Flanges Standard
      • CJ128-2007: Heat Measurement Calculation Standard
      • MODBUS-RTU: International Protocol Compliance

      Protection Ratings

      • IP68: Sensor units (submersible up to 3 meters)
      • IP65/IP66/IP67: Converter units (dust-tight and water-resistant)

      H2: Development Milestones

      2023

      • August: Released SF-W Food Safety Electromagnetic Flowmeter manual (2nd edition), emphasizing hygienic design standards

      2024

      • August: Published SF-E Electromagnetic Flowmeter and Battery-Powered series manuals (1st edition), introducing optimized low-power electronics

      2026

      • April: Scheduled release of advanced Slurry Electromagnetic Flowmeter documentation focusing on high-abrasion resistance technology

      H2: Technical Innovation

      Proprietary Technology

      • Variable frequency bidirectional constant current drive systems for excitation coils
      • High-input-impedance amplification with VFC (Voltage-to-Frequency Conversion)
      • Square wave pulse excitation for power efficiency and zero-point stability
      • Variation restraint algorithms for cuspidal disturb suppression in slurry measurement
      • Energy recovery systems in excitation circuits to reduce power consumption

      Platform Capabilities

      • Instrument IoT Big Data Platform for centralized device management
      • Real-time data analytics with 60-point historical curve tracking
      • Multi-protocol communication support (RS485, RS232, HART, GPRS, Bluetooth, WiFi)
      • RESTful API integration for third-party system connectivity

      Contact Us

      H2: Get in Touch

      Primary Contact Information

      IoT Platform Access

      • Web Platform: 124.95.128.250
      • Protocol Support: HTTP GET/POST with JSON data format

      Business Inquiries
      For product selection assistance, technical specifications, custom engineering requirements, or quotation requests, please contact our team with your application details including pipe diameter, fluid properties, and installation environment.


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      Products

      • Electromagnetic Flow Meters
        • SF-E Standard Flow Meter
        • Battery-Powered Remote Meter
        • Slurry Flow Meter
        • SF-C Insertion Meter
        • SF-W Food Safety Meter
      • IoT Solutions
        • Big Data Platform
        • Remote Monitoring Systems

      Solutions by Industry

      • Manufacturing
      • Energy & Chemicals
      • Municipal & Public Sector
      • Food & Pharmaceutical

      Knowledge Center

      • Technical Fundamentals
      • Selection Guide
      • Installation Best Practices
      • Maintenance & Troubleshooting
      • FAQ

      Company

      • About Us
      • Certifications
      • Development History
      • Contact Us

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      © 2026 Kaifeng XinYa Instrument Co., Ltd. | All Rights Reserved

      Standards Compliance: JB/T 9248-2015 | GB/T 9124.1-2019 | IP68 Rated | MODBUS-RTU Compatible

      https://www.sytcflowmeter.com/
      Kaifeng Xinya Instrument Co., Ltd.

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