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SF6 Gas Density Monitor For SF6 Gas Insulated Switchgear (GIS)

SF6 Gas Density Monitor For SF6 Gas Insulated Switchgear (GIS)

Case Diameter 100mm
Scale Range -1 to 9 bar  (customizable)

a) At 20°C: Class 1.0 or 1.5
b) -40°C to +60°C: Class 2.5
(related to the measuring span; SF6 in gas phase)

Degree of Protection IP65
Ambient Conditions -40°C to +60°C, relative humidity≤95%RH
Leakage Rate ≤1 × 10-9 Pa·m3/s (Helium leakage inspection)
Process Connection M20*1.5, Customizable
Installation Method Radial or Axial
Electrical Connection Plug-in connection M20 × 1.5 sealing head
Cable Size: 1.5mm2 recommended, 2.5mm2 maximum
Insulation Resistance >100 MW (DC 500V)
Withstand Voltage 2kV, 50/60 Hz 1 min

Contact Type

Magnetic snap-action switch
80%Ag, 20%Ni, 10µm Au plated

Impact Rating 50g (oil-filled), 30g (non-oil-filled)
Contact Electrical Parameters 30W/50VA, 1A (maximum)
220VDC/380V 50/60Hz (maximum)
Pressure Element Bourdon tube imported from Europe
Window Glass Laminated safety glass
Weight 1 kg
Options Oil-filled
Full Range Indication: Class 1.0
Power-frequency withstand voltage: 2.5kV 50/60 Hz 1min
Wide temperature range -60°C to +60°C
Can detect SF6, Air, N2, SF6 + N2 and other gases
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Applications Of SF6 Gas Density Monitor / Relay

  • SF6 Gas Insulated Switchgear (GIS)
  • SF6 Insulated Circuit Breakers
  • SF6 Insulated Pole-Mounted Switch
  • SF6 Insulated Transformers
  • SF6 Insulated Mutual Inductor
  • SF6 Insulated Busbar Systems

Features of SF6 Gas Density Monitor / Relay

  • The temperature compensation unit ensures greater accuracy of instrumentation pressure measurement.
  • Suitable for installation indoor or outdoor.
  • Hermetically sealed case of stainless steel AISI 304.
  • AISI 316 stainless steel gas connexion tubes.
  • The value on site and the output signals are not affected by the external environment (e.g. altitude factor).
  • Electric contact switch design ensures the accurate and stable gas monitoring system which monitors SF6 gas density.
  • Up to four gas density switch contacts can achieve overpressure alarm, dual alarm or double lock, and many other solutions to secure and reliable monitoring.


Drawing of WR-100 SF6 Gas Density Monitor / Relay