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US 10,495,620 B2Granted
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.
Claims7
A gas detector cell unit comprising:
- a gas cell having:
- a diffusive membrane, the diffusive membrane having at least one opening;
- an outer housing having a passage for a first incoming gas outside the outer housing to pass therethrough;
- a protecting filter in fluid communication with the passage, the gas detector cell unit detecting a reduction in circulation through the protecting filter based at least in part on a change in a pressure transfer function of the protecting filter over a predefined time;
- and
- a catalyst being located proximate the at least one opening of the diffusive membrane, the catalyst converting the first incoming gas to a predetermined second gas, the gas detector cell unit detecting the predetermined second gas.
3 more elements
Dependencies are inferred from the claim text.