Measuring and testing – Sampler – sample handling – etc. – Analyzer supplier
Patent
1987-09-03
1989-01-24
Levy, Stewart J.
Measuring and testing
Sampler, sample handling, etc.
Analyzer supplier
7386434, 7386301, G01N 124
Patent
active
047993944
ABSTRACT:
A device for sealing and isolating analyzer gas sample flows in an aspirated sampling system is provided with a drainage channel surrounding the gas sample inlet to isolate the inlet in the plane of the sealing surface from a pressurized air supply channel in the sealing surface and intercept leakage from the air supply channel. The drainage channel is connected to a cavity via a constricted flow path to reduce leakage pressure and the cavity is vented to the environment.
REFERENCES:
patent: 3794066 (1974-02-01), Raymond
patent: 4134289 (1979-01-01), Bohl et al.
patent: 4441356 (1984-04-01), Bohl
patent: 4502341 (1985-03-01), Hall, II
Barnett Daniel C.
Hall, II George R.
Bell Robert P.
Edwards Robert J.
Levy Stewart J.
Marich Eric
Matas Vytas R.
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