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