The flow controller work according to the floated element measuring principle. The floated element is conducted into a cylindrical slit nozzle.
Depending on the design the installation of the flow controller may be position-dependent ( only floated element ) or independent of position
( floated element plus spring ). Outside of the flowing circuit a reed contact ( protective gas contact ) is installed. The reed contact is infused into a steplessly
adjustable casing ( switch housing ) and thus protected from external influences. The inflowing medium moves floated element in the direction of the
flow-through. Once the floated element with its integrated magnets has reached the position of the reed contact, the contact blades will close.
When the flow rate increases, the variable area float will move farther in the flow direction, at a maximum to the end stop. The latter prevents the floated
element from driving over the switching area of the reed contact ( bistable property ).