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RDH40 SF6 Gas Density and Dewpoint Transmitter - Reliable China Suppliers and Factory for High Voltage Monitoring

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The RDH40 Gas Density and Dewpoint Transmitter is an essential instrument designed for monitoring the temperature, pressure, density, and moisture content of SF6 gas within closed containers. This device offers advanced real-time remote monitoring, making it a reliable choice for operators. Equipped with intelligent compensation technology, the RDH40 effectively tracks nonlinear changes in SF6 gas pressure and micro-water content in real time, ensuring accurate measurements. Ideal for medium and high voltage systems, this transmitter is suitable for deployment in new substations as well as for the renovation and smart upgrading of existing facilities. As a leading China factory and key supplier, we ensure high-quality products that meet the demands of modern electrical infrastructure.

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    Remote part of the main electrical performance indicators and specifications

    Operating voltage 10~30VDC 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 9600bps

    Technical parameters

    Pressure measuring range 0 ~ 1.4MPa(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 0.4kg

    Frequently Asked Questions

    Q1: What is the operating voltage range for this remote transmitter?
    The remote transmitter operates within a voltage range of 10~30VDC, making it compatible with most industrial power supply systems.
    Q2: What communication protocols are supported?
    The device supports RS485 communication mode with Modbus RTU protocol at a baud rate of 9600bps, ensuring reliable data transmission in industrial environments.
    Q3: Can the pressure measuring range be customized?
    Yes, while the standard pressure measuring range is 0 ~ 1.4MPa, customization options are available to meet specific application requirements.
    Q4: What is the accuracy of the transmitter?
    The transmitter offers high accuracy with temperature measurement at ±1℃, pressure at ±0.5%FS (±1.0%FS at 20℃), and dew point at ±3℃.
    Q5: What environmental conditions can this device withstand?
    The device is designed for harsh environments, operating in temperatures from -40℃ to +80℃ with relative humidity up to 95%RH, and features IP65 protection rating.
    Q6: What EMC standards does this product comply with?
    The product complies with multiple IEC61000-4 standards including Level 4 for ESD, EFT, and surge protection, and Level 5 for magnetic field immunity, ensuring reliable operation in electromagnetically challenging environments.

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