초록 ▼

An improved flowmeter apparatus and method for accurately determining the liquid flow rate in a conduit and the mass flow rate of selected pollutant components entrained in the flow stream characterized by injecting at least two trace materials into the flow stream at a plurality of locations and, a

An improved flowmeter apparatus and method for accurately determining the liquid flow rate in a conduit and the mass flow rate of selected pollutant components entrained in the flow stream characterized by injecting at least two trace materials into the flow stream at a plurality of locations and, after allowing adequate time for the trace materials to reach a downstream sampling location, collecting a plurality of samples of liquid from the flow stream containing the trace materials. By comparing the concentrations of the trace materials found in the sample, the degree of mixing of the trace materials in the flow stream, and hence the accuracy of the flow stream flow rate and pollutant component mass flow rate measurements, can be evaluated. Other injecting methods for more thoroughly mixing the trace materials with the flow stream are also disclosed.

대표청구항 ▼

Apparatus for measuring the rate of flow of liquid flowing in a conduit, comprising: (a) injecting means for injecting a known quantity and concentration of at least two trace materials into the liquid; (b) sample collecting means arranged in the liquid downstream from said injecting means for colle

Apparatus for measuring the rate of flow of liquid flowing in a conduit, comprising: (a) injecting means for injecting a known quantity and concentration of at least two trace materials into the liquid; (b) sample collecting means arranged in the liquid downstream from said injecting means for collecting at least one sample containing the liquid and a concentration of said trace materials; (c) concentration determining means for determining said concentration of said trace materials in said sample; (d) comparing means for comparing said concentration of said trace materials in said sample; and (e) calculating means for calculating the flow rate of the liquid as a function of said trace material concentrations in said sample.