초록 ▼

A gas sampling system for determining particulate matter contamination in a high velocity gas flow where the sampling chamber is first cleaned, then evacuated and is coupled by a closed three way valve in a straight line relationship to the gas supply line. The operating gas flow rate is established

A gas sampling system for determining particulate matter contamination in a high velocity gas flow where the sampling chamber is first cleaned, then evacuated and is coupled by a closed three way valve in a straight line relationship to the gas supply line. The operating gas flow rate is established through the three way valve which is quickly opened to couple the dynamically flowing gas to the evacuated sample chamber in a straight line relationship to trap a gas sample under dynamic conditions. When the sampling chamber has a gas sample the three way valve is again closed so that particulate matter in the sample chamber can be flushed from the sample chamber with a compatible liquid to a filter for collection and analysis.

대표청구항 ▼

A high velocity gas sampling apparatus including: gas sample chamber receiving a dynamic gas flow while in an evacuated condition; first means for selectively coupling a dynamic gas flow in an in-line flow relationship to one end of said gas sample chamber by use of a valve; second means at the othe

A high velocity gas sampling apparatus including: gas sample chamber receiving a dynamic gas flow while in an evacuated condition; first means for selectively coupling a dynamic gas flow in an in-line flow relationship to one end of said gas sample chamber by use of a valve; second means at the other end of said gas sample chamber for selective discharge of said gas sample chamber by use of a valve; means for filtering coupled to said second means for receiving a discharge output from said gas sample chamber when said second means are discharged; means for evacuating said gas sample chamber prior to opening said first means; and means for removing residual contaminate material from said gas sample chamber after said second means are discharging and passing said contaminate material to said filtering means.