Pressure limiter for multiple actuators
ÜB…A2
NB…A2
Technical description
The pressure limiters ÜB…A2 and NB… A2 are compact pressure switches as per EN 1854 for DUNGS multiple actuators.
The pressure switches are suitable for switching a circuit on, off or over on changes in actual pressure value relative to the set reference value. The reference valve (switching point) can be set easily and quickly by means of a setting wheel provided with a scale without the use of a pressure gauge.
Application
Pressure switches for DUNGS multiple actuators GasMultiBloc and DMV double solenoid valve. Various mounting options directly on housing or by means of an adapter.
Standard mounting on valve housing on the inlet side via threaded flange. Suitable for gases of families 1,2,3 and other neutral gaseous media.
Approvals
EC type testing certificate as per:
• EC-Gas Appliances Regulation
• EC-Pressure Equipment Directive
Approvals in other important gasconsuming countries. Special designs for the North American market with UL , FM and CSA registrations.
Functional Description
Single-acting pressure limiters in the superpressure range. The pressure limiters work without external energy supply
ÜB…A2, NB…A2 pressure limiters
The control unit responds to pressure. Interlock is performed when the set reference value is exceeded or undershot.
The ''Locked'' switching state is indicated by a glow lamp.
Restart is only possible by activating the reset button on the setting wheel of the pressure limiter after the operating pressure is attained.
Malaysia
