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RDH40 SF6 Gas Density and Dewpoint Transmitter - Reliable Monitoring Solutions by China Suppliers and Factory

The RDH40 Gas Density and Dewpoint Transmitter is an essential device for monitoring SF6 gas parameters such as temperature, pressure, density, and moisture content in enclosed environments. Made in China, this advanced transmitter features real-time remote monitoring capabilities and utilizes intelligent compensation technology to continuously track nonlinear pressure changes and variations in micro-water content. Its high accuracy makes it ideal for use in medium and high voltage systems, whether in new substation constructions or the renovation and smart upgrades of existing substations. As a reliable supplier, our factory ensures that the RDH40 transmitter meets the highest standards for efficiency and performance in the energy sector
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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 device?
    The device 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: What is the accuracy of the pressure and temperature measurements?
    The transmitter provides temperature accuracy of ±1℃, pressure accuracy of ±0.5%FS, pressure at 20℃ accuracy of ±1.0%FS, and dew point accuracy of ±3℃.
    Q4: Can this device withstand harsh environmental conditions?
    Yes, the device has an IP65 protection rating and can operate in ambient temperatures ranging from -40℃ to +80℃ with relative humidity up to 95%RH.
    Q5: Is the pressure measuring range customizable?
    Yes, while the standard pressure measuring range is 0 ~ 1.4MPa, it can be customized according to specific application requirements.
    Q6: What EMC standards does this device comply with?
    The device complies with multiple IEC61000-4 standards including Level 4 for ESD, EFT, and surge immunity, Level 3 for radiated immunity and conducted immunity, and Level 5 for magnetic field immunity, ensuring robust electromagnetic compatibility.

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