Patent ID: 6786235
Filing Date: 2004-09-07
Classification: F16K,G01N,Y10T

Abstract:
A system for diluting and mixing fluid samples, comprising:(a) a three-way valve having a first inlet coupled to a first fluid source, a second inlet coupled to a second fluid source, an outlet, and a gate, said gate operative to switch said outlet from fluid communication with one of said first and second inlets; (b) a controller coupled to said gate, said controller operative to cause said gate to switch; (c) a pulse width modulation signal source operative to apply a pulse width modulation control signal to said controller and cause said gate to switch in response to each half-cycle of said pulse width modulation control signal; and (d) a nebulizer coupled to said outlet to serve as a flow inducing means operative to provide a constant rate of flow of said first and second fluids through said outlet.