Real-time online monitoring of SF₆ gas micro-water content, density, and temperature.
Continuous SF₆ leakage detection with automatic alarm activation.
Configurable low-pressure alarm and locking system via preset/user-defined thresholds.
RS-485/CAN bus interfaces for seamless integration with monitoring systems.
Background software for automatic generation of operational trend charts.
Optional large LCD for on-site real-time data display (with screen protection and sound-activated mode).
Handheld remote controller for alarm threshold setup and display customization.
Fully sealed, anti-interference design for outdoor and low-temperature environments.

Imported high-stability sensors with internal circuit correction ensure linear output and ±3°C dew point accuracy.
Transmitter structure optimized for high-frequency electric fields, minimizing interference and enhancing long-term stability.

24/7 continuous operation with RS-485 real-time data upload to central monitoring systems.
Auto-triggered alarm/locking signals for out-of-range parameters, enabling predictive maintenance.
Host software supports scheduled data sampling, storage, and trend analysis to optimize circuit breaker maintenance and reduce downtime.

Parameter Category	Details
Measurement Ranges	- Dew Point: -50°C to +20°C (Td/f) - Pressure: 0 to 10 bar - Temperature: -40°C to +80°C
Calculated Parameters	- Micro-water (20°C): 10 to 20,000 ppm - Pressure/Density (20°C): 1 to 12 bar - SF₆ Mixed Density: 0 to 100 kg/m³
Output Parameters	PPM20, P20, T (°C), Td, P (bar), Tdatm, density (kg/m³)
Accuracy	- Dew Point: ±3°C (Td) - Pressure/Density: ±0.1% FS - Temperature: ±1°C
Response Time (20°C)	- Dew Point Sensor: 2s - Pressure Sensor: <0.5s
Operating Environment	- Temperature: -40°C to +80°C - Overload Pressure: 20 bar - Humidity: 0–100% RH (non-condensing) - Gas Type: SF₆, SF₆/N₂ mixtures
Communication	- Protocol: ModBus RTU - Speed: 9600 bps
Electrical Specs	- Voltage: 18–36VDC - Power Consumption: <3W
Mechanical Specs	- Weight: 361g - Protection Level: IP65 - Housing/Connector: Stainless steel - Interface: M30×1.5 thread, M12 electrical connector
Sealing Performance	- Air Leakage Rate: ≤10⁻⁹ Pa·m³/s (helium test) - Rated Inflation Pressure: 0.6MPa (absolute)

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