Gas detector clogging detection
AssigneeSimtronics AS
InventorsIb-Rune JOHANSEN, Preben STORÅS, Matthieu LACOLLE, Dag Thorstein WANG, Arne KARLSSON, Jon Olav GREPSTAD, Michal Marek MIELNIK
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Abstract
The present invention relates to a gas detector cell unit comprising a gas cell, the unit comprising an outer housing providing access to the gas outside through a protecting filter adapted to making gas cell safe for use in explosive environments, i.e. a sintered filter, and the unit comprising means for detecting reduction in the circulation through said protecting filter.
Claims22
A gas detector cell unit comprising a gas cell having a diffusive membrane, comprising an outer housing having a passage for gas outside the outer housing to pass therethrough, and a protecting filter in fluid communication with the passage, the unit comprising clogging detection means for detecting reduction in the circulation through the protecting filter by analyzing one of a transfer function and impulse response inside the filter.
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Dependencies are inferred from the claim text.