Patent ID: 7086274

Claim:
A pump assembly, which is substantially unaffected by ambient humidity, for use with a measurement system for measuring gas concentrations in a liquid, said measurement system including a probe connected to an analyzer said analyzer including a housing enclosing said pump assembly, said pump assembly in fluid communication with said probe and said analyzer, said pump assembly comprising: a motor; a pump housing for receiving said motor; a first member coupled to said pump housing and including a valve to controllably dispense a carrier gas to said probe; a second member coupled to said first member and including at least one orifice for receiving said carrier gas therethrough; a diaphragm disposed between said pump housing and said first member; at least one seal disposed in the valve of said first member; and at least one gasket disposed between said first member and said second member for controllably dispensing said carrier gas through said at least one orifice.