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GDS-MV 1
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WIKA · SF6 gas solutions · Family GDS

Gas density switch

Gas density switch for medium-voltage equipment, designed for gas density monitoring of closed SF6 gas tanks and ring main units (RMU), with hermetically sealed and temperature-compensated design.
Protection
IP65
Price
On request
Depends on configuration
Request a quote
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Description

Gas density is a crucial operating parameter for medium-voltage systems.

If the required gas density is not present, safe operation of the plant cannot be guaranteed.

The gas density measuring instruments from WIKA warn reliably against dangerously low gas quantities, even under extreme environmental conditions.

Electrical switch contacts warn the plant manager if the gas density, on account of a leak, drops below a specified value.

Special features

  • Independent of atmospheric pressure and altitude
  • No recalibration required
Identification
ModelGDS-MV
Product familyGDS
SubcategoryGas density switch
Operating environment
Ambient temperature−20…+60 °C
IP ratingIP65
Weight0.4 kg
Additional details
Datasheet languagesEN, DE
Tables from datasheet
Specifications
Max. pressure at 20 °C5 bar abs.
Permissible ambient temperatureOperation: -20 ...+60 °C (gaseous phase) Storage: -40 ...+80 °C
Number of switch contacts1 or 2
Switching functionNormally open or closed
Switching directionsFalling pressure or rising pressure
Switch pointsSet to customer-specific value and secured
Minimum separation of switch points50 mbar
Switch hysteresistypically 50 mbar
Load data5 A / AC 250 V, 50 Hz
Accuracy≤ ±60 mbar (at 20 °C: ≤ ±40 mbar)
High-voltage test (internal wiring against case)2 kV, 50 Hz, 1 s
Electrical connectionCable ends, not terminated, length 0.3m
Process connectionG¼B(EN837), spanner width 14 mm, stainless steel Other connections and connection locations on request.
Pressure elementStainless steel, welded Gas-tight: Leak rate ≤ 1 · 10 -8 mbar · l / s Test method: Helium mass spectrometry
Case (reference chamber)Stainless steel, blank, welded with measuring system Filling: SF₆ gas Leak tightness: Leak rate ≤ 1 · 10 -8 mbar · l / s Test method: Helium mass spectrometry
Ingress protectionIP65 per EN 60529
Weightapprox. 0.4 kg
Compensation of gas mixturesOn request