초록 ▼

Apparatus for extracting and analyzing dust-laden gas samples and in which a gas extraction connection is constructed in the form of a stilling chamber leading to an analyzer via a three-way valve to which is connected a cleansing air connection. A time control device periodically interrupts the flo

Apparatus for extracting and analyzing dust-laden gas samples and in which a gas extraction connection is constructed in the form of a stilling chamber leading to an analyzer via a three-way valve to which is connected a cleansing air connection. A time control device periodically interrupts the flow of gas to the analyzer and directs cleansing air of the extraction connection.

대표청구항 ▼

In an apparatus for extracting and analyzing samples of dust-laden air from an exhaust gas line of a heat exchanger and including a gas extraction connection in communication with said exhaust gas line, a gas extraction probe, an analyzer, a gas sample pipe communicating with said gas extraction con

In an apparatus for extracting and analyzing samples of dust-laden air from an exhaust gas line of a heat exchanger and including a gas extraction connection in communication with said exhaust gas line, a gas extraction probe, an analyzer, a gas sample pipe communicating with said gas extraction connection for conducting gas samples between said probe and said analyzer, a gas exhaust pipe communicating with said analyzer for exhausting gas remote from said gas extraction connection, and a switch valve in said pipe, the improvement wherein said gas extraction connection comprises a stilling chamber; said switch valve comprises a three-way valve in communication with said gas sample pipe between said probe and said analyzer and with a source of compressed cleansing air; and time control means operable to establish communication between said probe and said air source and simultaneously interrupt communication between said probe and said analyzer, and vice-versa.