The 7S-GDM-100-CQ15011A remote type SF6/N2 mixed gas density relay is a high-precision monitoring device specially designed for medium and high voltage power equipment.
It adopts professional temperature compensation structure, accurately tracks SF6/N2 mixed gas density changes, and supports remote signal transmission, ideal for gas insulated switchgear, ring main units and smart substation applications.
This SF6/N2 gas density relay integrates sophisticated temperature compensation design, effectively offsetting measurement deviation induced by ambient temperature fluctuation. It sustains precise density indication throughout all seasonal and outdoor operating conditions.
The 7S-GDM-100-CQ15011A remote density relay delivers stable remote data output, enabling real-time gas density supervision and remote alarm triggering for power distribution networks. Learn more about smart monitoring systems in our guide: SF6 Gas Monitoring in Smart Substations.
Adopting premium sealing craftsmanship, this SF6 density relay maintains an ultra-low gas leakage rate. Its enhanced electromagnetic immunity ensures steady operation within complex high-voltage substation environments.
It is fully compatible with 10kV to 35kV GIS, RMU, gas-insulated cabinets and transformer installations. The device retains stable performance in frigid climate zones, fulfilling global outdoor power project requirements.
| Parameter | Specification |
|---|---|
| Accuracy | Class 1.0 (at 20°C); Class 2.0 (-40~60°C) |
| Contact Rating | AC/DC 250V, 100VA/50W |
| Contact Resistance | ≤1.0 Ω |
| Sealing Performance | ≤1×10⁻⁸ mbar·L/s (helium leak test) |
| Vibration Resistance | 20 m/s² |
| Shock Resistance | 50g, 11ms |
| Contact Quantity | 1~3 pairs (max. 4 pairs), NO/NC configurable |
| Enclosure Protection | IP65 |
| Reading Consistency | ≤0.02 MPa difference between pointer display and remote data |
| Parameter | Specification |
|---|---|
| Accuracy | Class 1.0 (full temperature range) |
| Working Power Supply | DC 10~30V (≤2mA at DC24V) |
| Working Pressure Range | -0.1~0.9 MPa (gauge pressure); 0~1.0 MPa (absolute pressure) |
| Temperature Compensation Range | -40°C~80°C (gas phase) |
| Communication Protocol | RS485 Modbus / Wireless (compliant with smart substation standards) |
The 7S-GDM-100-CQ15011A SF6/N2 mixed gas density relay is widely applicable to the following facilities:
It sustains precise density indication throughout all seasonal and outdoor operating conditions. If you require a rated pressure of 0.60MPa, check the RDM Series SF6/N2 Mixed Gas Density Relay.
For pure SF6 applications, we also offer our proven SF6 gas density monitor with the same reliable performance and OEM customization support.
We supply fully matched original SF6 density relays with complete factory inspection documentation. Custom parameter configuration and bulk order supply are available for global power engineering clients.
