Deutsch 
English Dungs GGW ... A4 are differential pressure switches for gas, air, flue and exhaust gases.
Technology
The GGW...A4 differential pressure switch is an adjustable gas differential pressure switch in accordance with EN 1854 for combustion systems. It is suitable for switching a circuit on, off or over when the actual pressure value changes in relation to the setpoint value. The setpoint (switching point) is set on a dial with scale. Measuring socket integrated in the metal housing as standard. If the lower pressure [G 1/8 (-)] is an overpressure compared to the atmosphere, type GGW...A4 must be used. (If the lower pressure [G 1/8 (-)] is a negative pressure compared to the atmosphere, type GGW...A4-U must be used).
Application
Differential pressure monitoring in combustion, ventilation and air conditioning technology. The differential pressure switch is suitable for gases of gas families 1, 2, 3 and other neutral gaseous media, as well as air, flue and exhaust gases. Non-ferrous metal-free, suitable for gases up to max. 0.1 vol. % H2S, dry.
Technical data
Setting range GGW3 A4: 0.4 - 3.0 mbar
Max. Operating pressure: 0...500 mbar (50kPa)
Temperature range: Medium/ambient temperature -15° C to +70° C
Electrical connection: Standard on screw terminals via cable entry M20 x 1.5
Switching current: AC eff. min. 20 mA , max. 6 A at cos f 1)
Protection class: IP 54 according to IEC 529 (EN 60529), (clear cover)
Technology
The GGW...A4 differential pressure switch is an adjustable gas differential pressure switch in accordance with EN 1854 for combustion systems. It is suitable for switching a circuit on, off or over when the actual pressure value changes in relation to the setpoint value. The setpoint (switching point) is set on a dial with scale. Measuring socket integrated in the metal housing as standard. If the lower pressure [G 1/8 (-)] is an overpressure compared to the atmosphere, type GGW...A4 must be used. (If the lower pressure [G 1/8 (-)] is a negative pressure compared to the atmosphere, type GGW...A4-U must be used).
Application
Differential pressure monitoring in combustion, ventilation and air conditioning technology. The differential pressure switch is suitable for gases of gas families 1, 2, 3 and other neutral gaseous media, as well as air, flue and exhaust gases. Non-ferrous metal-free, suitable for gases up to max. 0.1 vol. % H2S, dry.
Technical data
Setting range GGW3 A4: 0.4 - 3.0 mbar
Max. Operating pressure: 0...500 mbar (50kPa)
Temperature range: Medium/ambient temperature -15° C to +70° C
Electrical connection: Standard on screw terminals via cable entry M20 x 1.5
Switching current: AC eff. min. 20 mA , max. 6 A at cos f 1)
Protection class: IP 54 according to IEC 529 (EN 60529), (clear cover)