The Dungs LGW 50 A4 is a differential pressure switch designed for monitoring air, flue, and exhaust gases in burner control systems. Here's a detailed breakdown of its specifications and features:

Technical Specifications

• Pressure Range: 2.5 to 50 mbar
• Max Operating Pressure: 500 mbar
• Ambient Temperature: –15C to +70C
• Storage Temperature: –30C to +80C
• Switching Voltage:
  • DC: Gold contacts 5–24 V
  • AC: Silver contacts 24–250 V
• Nominal Current:
  • DC: 20 mA (Au)
  • AC: 10 A (Ag)
• Protection Class: IP54
• Pressure Connection: G 1/4 thread
• Switching Function:
  • Pressure rise: 1 NC opens, 2 NO closes
  • Pressure fall: 1 NC closes, 2 NO opens