Patent ID: 6265980
Filing Date: 2001-07-24
Classification: G01F

Abstract:
A time delayed fluid level monitoring device for monitoring the level of a fluid in a vessel comprising:a housing adapted for connection to said vessel and defining a cavity, said housing further provided with first and second orifices for allowing fluid communication between said cavity and the interior of said vessel, said first orifice arranged to restrict the flow of fluid between said cavity and said vessel in a manner so that there is a time delay in the equilisation of fluid level in fluid level in said vessel and in said cavity, following a change of fluid level in the vessel, said second orifice arranged to provide a vent for said cavity; and,means adjustably supported by the housing for providing an indication as to whether the fluid level in the cavity is above or below a predetermined level, the position of the means being adjustable to allow adjustment of the predetermined level;whereby, in use, the indication provided by said means will only change from a current indication if the fluid level in the vessel has been at a level relative to said predetermined level opposite to the current indication for a period of time equal or greater than said time delay.