Pressure Switch POPRENAxxx / POPRENCxxx
The pressure switch is a monitoring device which sends an electrical signal to the fire control panel when the pressure in the cylinder falls.
It is connected to the container valve and there are two variants NC (Normally closed, it opens with pressure) or NO (normally open, it closes with pressure). Inside of this device is housed a dry contact which opens or closes an electrical circuit depending on the variant mentioned above. They are supplied from the factory assembled in the container valve in the proper port. The container valves in their connection for the pressure switch have a non-return mechanism which allows the pressure switch to be changed or removed with the cylinder pressurized.