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RDH40 SF6 Gas Density and Dew Transmitter1.jpg
RDH40 SF6 Gas Density and Dew Transmitter2.jpg
RDH40 SF6 Gas Density and Dew Transmitter3.jpg

China RDH40 SF6 Gas Density and Dewpoint Transmitter - Reliable Suppliers and Factory Solutions for Medium and High Voltage Systems

The RDH40 Gas Density and Dewpoint Transmitter is an essential tool for monitoring the temperature, pressure, density, and moisture content of SF6 gas in sealed containers. Designed for real-time remote monitoring, this advanced device utilizes intelligent compensation technology to accurately track the nonlinear variations in SF6 gas pressure and moisture levels. Its precision makes it an ideal choice for medium and high voltage systems. This transmitter is not only suitable for new substation construction but also for the renovation and smart upgrades of existing substations. As a reliable product from reputable suppliers in China, our factory ensures high-quality manufacturing and performance, making it a top choice for your gas monitoring needs
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    Product Details

    Remote Part of the Main Electrical Performance Indicators and Specifications

    Operating voltage

    10 ~ 30 VDC

    EMC Class

    IEC61000-4-2: Level 4

    IEC61000-4-3: Level 3

    IEC61000-4-4: Level 4

    IEC61000-4-5: Level 4

    IEC61000-4-6: Level 3

    IEC61000-4-8: Level 5

    IEC61000-4-9: Level 5

    IEC61000-4-10: Level 5

    Power consumption

    < 0.5W

    Communication mode

    RS485

    Communication protocol

    Modbus RTU

    Baud rate

    9600 bps
    Technical Parameters

    Pressure measuring range

    0 ~ 1.4 MPa Customizable

    Dew measuring range

    -50℃ ~ +20℃

    Accuracy of transmitter

    Temperature: ±1℃   |   Pressure: ±0.5%FS

    Pressure at 20℃: ±1.0%FS   |   Dew: ±3℃

    Degree of protection

    IP65

    Ambient condition

    -40℃ ~ +80℃  |  Relative humidity ≤ 95%RH

    Leakage rate

    ≤ 1 x 10-9 Pa · m3/s (Helium leakage inspection)

    Process connection

    G1 Customizable

    Electrical connection

    M12 x 1 Circular connector

    Weight

    0.4 kg
    ❓  Frequently Asked Questions (FAQ)
    Q1: What is the operating voltage range of this remote transmitter?
    The remote transmitter operates within a voltage range of 10 ~ 30VDC, making it compatible with a wide variety of industrial power supply systems.
    Q2: What communication protocol does the transmitter support?
    The transmitter uses RS485 communication mode with the Modbus RTU protocol at a baud rate of 9600 bps, which is a widely adopted standard in industrial automation environments.
    Q3: Can the pressure measuring range and process connection be customized?
    Yes. The default pressure measuring range is 0 ~ 1.4MPa and the process connection is G1, but both can be customized to meet specific application requirements. Please contact us with your specifications.
    Q4: What is the IP rating and what does it mean for installation environments?
    The transmitter carries an IP65 protection rating, meaning it is fully dust-tight and protected against low-pressure water jets. This makes it suitable for harsh outdoor or industrial environments with exposure to dust and moisture.
    Q5: What are the EMC compliance levels for this device?
    The device complies with multiple IEC 61000-4 EMC standards, including Level 4 for electrostatic discharge (IEC61000-4-2), Level 3 for radiated immunity (IEC61000-4-3), and Level 5 for power frequency magnetic field immunity (IEC61000-4-8/9/10), ensuring reliable operation in electromagnetically challenging environments.
    Q6: How is the leakage rate tested and what does it guarantee?
    The leakage rate is tested using helium leakage inspection, with a guaranteed rate of ≤ 1 × 10-9 Pa·m3/s. This extremely low leakage rate ensures the long-term integrity and safety of the pressure measurement system.

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