Dungs AA-A1-3-2 Instrucciones de instalación - Página 3
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Operation
Definition of switching
hysteresis ∆p
The pressure difference between the
upper and lower switching pressures.
Pressure Connection
Connection p2 (–) = lower pressure
Connection p1 (+) = higher pressure
AA...A1 Mounting Procedure
• Use suitable hoses for the medium.
• Use a maximum 5/32" ID hose
• Secure the hoses with a cable tie or
a cable clip.
Application & Connection Examples
Connection p1
must remain open
System vacuum monitor
AA...A1 is connected to the air duct with
the p2 (-) connection. p1 (+) is not con-
nected with the air duct.
Do not seal the p1 (+) connection; it must
be open to the atmosphere.
Prevent dirt from entering
into the device through con-
nection p1(+)
3 ... 5
Pressure
at meter
Connection p2
Connection p1
Filter monitoring
To monitor a filter, the AA...A1 can be
connected as shown above.
Setpoint tolerance
Connection p2
Upper switching
pressure
Lower switching
pressure
Connection p2
Connection p1
Blower monitoring
For blower monitoring, connect con-
nection p1 (+) to the air duct on the
downstream side of the blower and con-
nection p2 (-) to the air duct upstream
of the blower.