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Single Phase Multifunction Meter SFM236 Series - Reliable Power Monitoring from China Suppliers and Factory

Expanded Technical Specification: SFM236 Series Single-Phase Multifunctional DIN-Rail Meter

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Introducing the SFM236 series single-phase multifunctional DIN-rail meter, a compact and high-precision electrical monitoring device designed specifically for single-phase two-wire (1P2W) power systems. Manufactured in China and utilized by leading suppliers and factories, this meter is perfect for residential, light commercial, and small-scale industrial applications, including apartment complexes, retail stores, and standalone machinery. With its ability to provide reliable real-time data acquisition, the SFM236 meter is an essential component for efficient power monitoring and management solutions, ensuring optimal energy use in various settings.

    Product Description
    Core Measurement Capabilities

    Calibrated for exceptional accuracy, the SFM236 series meter captures a complete set of critical single-phase power parameters to support comprehensive load analysis and energy auditing:

    • Voltage: RMS line voltage (compatible with standard system voltages such as 100 V, 120 V, 220 V, 230 V, 240 V)
    • Current: RMS load current (configurable for direct measurement or CT-connected applications with 1 A/5 A secondary ratings)
    • Power: Active power (real power consumed/supplied), reactive power (power stored in inductive/capacitive loads), and apparent power
    • Frequency: Grid frequency fluctuations (typically 50 Hz/60 Hz, with precise tracking of variations)
    • Energy: Cumulative import energy (power drawn from the grid) and export energy (power fed back to the grid, suitable for distributed generation systems like rooftop solar)
    🔗 Operational Versatility & System Integration

    Designed to meet diverse on-site monitoring needs, the SFM236 series meter supports two flexible operational modes:

    Mode 1 Local Display Mode

    The meter is equipped with an on-board digital display that presents real-time readings of all measured parameters. This allows field technicians and facility managers to perform quick spot checks, verify system performance, and troubleshoot issues without relying on external equipment.

    Mode 2 Centralized Measurement & Control Integration

    Beyond local monitoring, the meter's detection data can be seamlessly transmitted to industrial control devices (including PLCs, RTUs, and energy management controllers) and host computers via industry-standard communication protocols. This integration enables the construction of a unified, centralized measurement and control system, supporting remote data logging, energy consumption trend analysis, load profiling, and automated power management.

    💡 With its space-saving DIN-rail mounting design, broad parameter measurement range, and flexible integration capabilities, the SFM236 series meter is perfectly suited for real-time power monitoring applications in single-phase two-wire systems, delivering actionable data to optimize energy usage and enhance system reliability.
    Technical Parameters
    Parameters Index
    Input Voltage Voltage (Un): 100...240 VAC
    Voltage range: 0.8Un – 1.15Un
    Current Directly connected: 0.25 – 5(80) A  |  Overcurrent withstand: 30I max for 0.01s
    Frequency 50 / 60 Hz
    Wiring Connecting capacity: from 16 to 25 mm²
    Display LCD with white backlight  |  Max reading: 999999 kWh
    Accuracy Active energy: Class 1, Class B
    Output Communication Interface: RS485  |  Protocol: Modbus RTU
    Pulse Pulse constant: 800 imp/kWh
    Power Consumption < 2W / 10VA
    Withstand AC Voltage 4 kV / 1 min
    DC Impulse 6 kV – 1.2 µs waveform
    Climate Environment Temperature Operating temperature: -25°C ~ +55°C
    Storage temperature: -40°C ~ +70°C
    Humidity ≤ 95% non-condensing, no corrosive gas
    Altitude ≤ 2000 m
    Mechanical Environment M1
    Electromagnetic Environment E2
    Frequently Asked Questions (FAQ)
    Q What voltage ranges does the SFM236 series meter support?
    The SFM236 series meter supports a rated voltage (Un) of 100 to 240 VAC, making it compatible with common standard system voltages including 100 V, 120 V, 220 V, 230 V, and 240 V. The operational voltage range is 0.8Un to 1.15Un.
    Q Can the SFM236 meter be used with a current transformer (CT)?
    Yes. The SFM236 series meter supports both direct connection and CT-connected applications. For CT configurations, it is compatible with 1 A and 5 A secondary ratings, allowing it to measure higher load currents safely and accurately.
    Q What communication protocol does the SFM236 meter use for data transmission?
    The SFM236 series meter uses an RS485 interface with the Modbus RTU protocol. This allows seamless integration with PLCs, RTUs, energy management controllers, and host computers for centralized monitoring, remote data logging, and automated power management.
    Q What power parameters can the SFM236 meter measure?
    The SFM236 meter measures a comprehensive set of single-phase power parameters, including RMS voltage, RMS current, active power, reactive power, apparent power, grid frequency, cumulative import energy, and export energy — making it suitable for full load analysis and energy auditing.
    Q What is the operating temperature range of the SFM236 series meter?
    The SFM236 series meter has an operating temperature range of -25°C to +55°C, and a storage temperature range of -40°C to +70°C. It is also rated for use in environments with humidity up to 95% (non-condensing) and at altitudes up to 2000 m.
    Q How is the SFM236 meter installed, and what accuracy class does it achieve?
    The SFM236 series meter features a space-saving DIN-rail mounting design for easy panel installation. It achieves Class 1 / Class B accuracy for active energy measurement, ensuring reliable and precise energy data for both commercial and industrial applications.