Patent ID: 6074203
Filing Date: 2000-06-13
Classification: B23K,G05D

Abstract:
Method of regulating the content of a given component of an atmosphere in a chamber, said chamber being supplied by a supply network which comprises at least one primary line connected at an upstream to receive gas from a gas supply, and at least two respective secondary lines connected at an upstream part thereof to said at least one primary line and in a downstream part thereof to said chamber, comprising implementation of the following steps:a) measuring the content of the given component of the atmosphere in the chamber at least at one point in said chamber;b) comparing the measured content with at least one predetermined control value for the content of said component of the atmosphere in the chamber at said point; andc) if necessary, varying the pressure of the gas at least at one point in said primary or secondary lines or in a feed pipe upstream of the at least one primary line, depending on the result of the comparison in step b).