Back to results
US 6,148,659 AGranted
Gas concentration monitor having a bridge configured flow system
OwnerJohn E. Trainainventor
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
OwnerJohn E. Trainainventor
Estimating the term…
A gas concentration monitor has a pneumatic bridge having two parallel flowpaths containing a first conduit leg and a second conduit leg connected to an input line. Each leg has an entry orifice and an exit orifice through which a portion of the gas sample flows. Orifices need not be of equal size and or kept at the same temperature. A pump is connected to both legs for drawing the sample through the bridge. A condenser or absorber which removes the gas whose concentration is being determined is connected to the first leg between the entry orifice and the exit orifice. A differential pressure gauge measures the differential pressure between the first leg and the second leg which differential pressure changes due to removal of the target gas of measurement interest from the other gas fraction passing through the bridge towards discharge from the bridge. From that measurement one can calculate the concentration in the sample of the gas that was removed by the condenser or absorber.
A gas concentration monitor for measuring concentration of a portion of a gas mixture comprised of:
A method of monitoring concentration of at least one particular gas in a sample containing a plurality of gases via a gas analysis apparatus, said gas sample including a portion of measurement interest having at least one gas to be removed from said gas sample and a complementary portion to be discharged from said apparatus comprising:
Dependencies are inferred from the claim text.