SF₆High voltage switches are widely used high-voltage electrical appliances in power systems.SF₆The reliable operation of high-voltage switches has become one of the most concerned issues for power supply and consumption departments.SF₆Gas density meter is used to monitor operationSF₆High voltage switch bodySF₆The performance of an important component for gas density changes directly affects its qualitySF₆The safe operation of high-voltage switches.

SF₆Switch in a sealed containerSF₆Gas pressure varies with temperature, usually20At ℃SF₆The absolute pressure value is used asSF₆The size of the gas density value. Measured at a certain ambient temperatureSF₆Gas pressure values must be converted to their corresponding values20The equivalent pressure value at ℃ is used to determineSF₆The safety of the switch.

Main technical parameters

Measurement range:0.01MPa～1.00 MPa

Measurement accuracy: ±0.2%（FS）

Rated density:0.60 MPa(Or pre-set according to device requirements)

Alarm threshold:0.52 MPa(Or pre-set according to device requirements)

Alarm release threshold:0.53 MPa(Or pre-set according to device requirements)

Locking threshold:0.50 MPa(Or pre-set according to device requirements)

Lock release threshold:0.51 MPa(Or pre-set according to device requirements)

Communication interface:RS485

Temperature measurement range:-50℃～100℃, measurement accuracy: ±0.2℃

Protection level:IP65

Working environment: Temperature-45℃～55℃, humidity ≤95%

Power Supply:AC220V±10% 50Hz±5%

main features

■ Fully enclosed design, easy to install and use, suitable for strong electromagnetic environments and outdoor environments

■ Industrial wide temperature rangeLCDLCD screen, easy to operate, all parameters and status are clear at a glance

■ High precision sensors accurately measure parameters such as pressure and temperature on site, and automatically convert them into20The pressure value at ℃ automatically compensates for temperature and pressure

■ The equipment adopts high reliabilityRS485Communication method, capable of long-distance transmission; Multiple devices form an online detection system for real-time monitoringSF₆The density of the gas is measured and all data is transmitted in real-time to the data acquisition center to achieve centralized digital control

■ Users can change the rated density, alarm threshold, and lockout threshold of each device, and perform real-time parameter calibration and correction for each device online

■ On the computer in the data collection center, real-time data can be displayed and trend charts of status changes can be automatically drawn through software. The detection data can be saved for a long time to view the data more vividly and accurately