Dilution tunnel

Details Dilution tunnel Dilution tunnel

2006-05-16

2006-05-16

Williams, Hezron (Department: 2856)

Measuring and testing

Sampler, sample handling, etc.

Automatic control

C073S863830

Reexamination Certificate

active

07044009

ABSTRACT:
A dilution tunnel having a flow chamber structure with an inlet, an outlet, and an internal flow passage for a sample gas, the sample gas being adapted to flow in a flow direction between the inlet and the outlet. The flow chamber structure having a plurality of pores that communicate between an outside region external of the flow chamber structure and the internal flow passage. The pores are adapted to introduce a diluting gas from the outside region into the internal flow passage. The flow chamber structure is adapted to provide a diluting rate of the dilution tunnel that varies in the flow direction of the dilution tunnel.

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patent: 2003/0205096 (2003-11-01), Gehner et al.
patent: 2003/0232449 (2003-12-01), Mikkanen et al.
patent: 57016333 (1982-01-01), None
patent: 366898 (2003-01-01), None

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