Apps
Gas density monitoring of closed SF6 tanks
Outdoor use
for high voltage switchgear

Features
Density switch with reference chamber and gas compensation function
There is a micro switch in the reference gas chamber; it is not affected by atmospheric pressure changes and altitude; no need to re-check

Description
Scope of work
Allow fill pressure:
1.1 MPa (absolute) / 20 ° C
Recommended gas chamber maximum pressure:
0.75 MPa (absolute) / 20 ° C
Recommended gas chamber minimum pressure:
0.4 MPa (absolute) / 20 ° C
Allowable temperature range
Ambient temperature: -40 … +80 ° C (gas phase)
Storage temperature: -40 … +80 °C
Alarm contacts / contact rating
Up to 4 microswitches can be used for on or off operation, switching point (not adjustable) has been fixed according to customer requirements
Contact Rating: 5 A / 250 V AC, 50 Hz
Switch strokes
Maximum switching point travel: 0.16 MPa
Minimum switching point travel: 0.01 MPa
Switch hysteresis: usually 0.01 MPa, switching point settings meet product specifications
Reference accuracy of reference electrical contacts
20 ​​°C: 6 kPa
-20 ... +60 °C: 8 kPa
High Pressure Test
2 kV, 50 Hz, 1 second (for the case wiring)
Electrical connections
Cable box with M20 x 1.5 cable gland
The wire cross-sectional area is up to 2.5 mm²