Abstract:
An electronic circuit employed to change an operation from one parallel train to another and to instigate a separate operation in that parallel train temporarily removed from service.
Abstract:
An apparatus for splitting a carrier gas stream into two controlled streams and injecting a gas sample mixture into one of the carrier gas streams for delivery to a receiving chamber. By injecting the sampling out gas into a line one end of which has a restricted opening and the other end in communication with the carrier gas stream flowing to the receiving chamber, an uninterrupted sample gas slug can be delivered to said receiving chamber.