BMJ-WX(D)-VI Wireless Remote SF6 Density Sensor

Main housing material: 6061-T6 aluminum and H59 copper, with an aesthetically pleasing design.

Battery-powered, enabling long-distance transmission of gas density signals.

Temperature sensing element: Uses imported materials for high accuracy and stable compensation performance.

Integrated control and indication.

Oil-free design with excellent vibration and impact resistance.

Electronic remote transmission adopts a bus structure to reduce wiring complexity.

Wireless relay signal transmission for density data, ensuring secure and reliable long-distance communication.

Applications
The SF6 remote density relay valve group is primarily used to monitor and control the density of SF6 gas in sealed containers. It is widely applied in SF6 high-voltage switches, medium-voltage switches, gas-insulated equipment (GIS), high-voltage cables, transformers, current transformers, and outdoor harsh environments. Installed at equipment gas replenishment or micro-water measurement ports, it provides quick and convenient operation. The valve group can transmit density values from the original mechanical density relay to the target terminal device. It also includes a gas replenishment port and reliable circuit transmission functionality, establishing an effective platform for real-time remote data reading and monitoring. Pressure, temperature, and density data are promptly transmitted to target devices (e.g., computer terminals) for analysis and control actions.

Using wireless relay transmission, the SF6 remote density relay valve group sends critical data to the target device in real time. The target device can read density and other parameters reliably, ensuring data integrity and accuracy through wireless reception. This robust hardware platform enables timely and effective control decisions, making it a powerful tool in the electronic monitoring industry.

Technical Specifications

1. Core pressure sensor: Uses TE (USA) components. Battery capacity: 19,000 mAh, ensuring a minimum service life of 6 years.
   (Battery replacement: Rotate to open the housing, unplug the old battery, and insert the new one. Data retention is guaranteed during replacement. Two free battery replacements are provided.)

2. Measurement ranges:

   Density: -0.1 MPa to 0.9 MPa

   Temperature: -40°C to +80°C

   Pressure: 0.1 MPa to 0.9 MPa

3. Accuracy:

   Density: Class 1.0

   Temperature: ±1.5°C

4. Long-term stability:

   Density: ≤±0.05% of range/year

   Temperature: ≤±0.1% of range/year

   Pressure: ≤±0.05% of range/year

5. Refresh rate:

   Low-power sleep mode during normal wireless operation. Average current <200 µA under 10-minute SF6 parameter sampling intervals.

   Instant wake-up and real-time data transmission upon parameter changes. Single-table refresh cycle ≤100 ms (adjustable).

6. Pressure display range: -0.1 MPa to 0.9 MPa

7. Sealing performance: Helium leak detection, leakage rate ≤1×10?? Pa·m³/s.

8. Main housing material: 6061-T6 aluminum and H59 copper.