Density monitor
AssigneeTrafag AG
InventorRemo Halbheer
Life of this patent
Estimating the term…
Abstract
A density monitor is used for monitoring a gas density in a measured volume with a separating wall which separates a first reference chamber formed in a density monitor housing from the measured volume. The density monitor further includes a separating wall movement detection device for detecting movement of the separating wall. In order to reduce false alarms, a second reference chamber is formed outside of the density monitor housing. The second reference chamber is fluidically connected to the first reference chamber by a fluid line.
Claims20
A density monitor for monitoring a gas density in a measured volume, the density monitor comprising:
- a separating wall which separates the measured volume from a first reference chamber formed in a housing of the density monitor;
- a separating wall movement detection device configured to detect movement of the separating wall as a measure of density in the measured volume;
- and
- a second reference chamber formed outside the housing of the density monitor, the second reference chamber being fluidically connected to the first reference chamber by a fluid line.
A method for monitoring a gas density in a gas space, the method comprising:
- separating a first reference chamber formed in a housing of a density monitor from the gas space by a movable separating wall;
- arranging a second reference chamber, which is substantially larger than the first reference chamber, outside the housing and thermally coupling the second reference chamber to the gas to be measured;
- providing a fluid line having a smaller volume than the second reference chamber to connect the second reference chamber to the first reference chamber;
- and
- monitoring the gas density by monitoring a movement of the separating wall.
Dependencies are inferred from the claim text.