Patent ID: 7059205

Claim:
A system for extracting samples from a stream flowing in a conduit comprising: a. a probe located in said conduit, said probe including a channel for passing a sample flow from the conduit for analysis; b. regulating means for controlling the velocity of the sample flow through said probe channel to correspond to the velocity of the stream flowing in the conduit, said regulating means comprising means for generating a feedback signal representing the relative velocities of the stream flowing in the conduit and the sample flow through said probe channel; and c. a filter for capturing particulate matter, said filter communicating with said probe channel, wherein said means for generating a feedback signal includes a conduit static pressure measuring means formed in an enclosed path located closely adjacent an external surface of said probe, d. a pump, said regulating means feedback signal controlling the pump flow rate of said pump to isokinetically deliver sample from said probe channel to said filter, and e. a condenser communicating with the pump to generate liquid matter from said sample flowing from said probe channel and a dry gas meter communicating with said pump for measuring the volume of gas in said sample flowing from said probe channel.