Conductivity measurement of fluids

摘要

A product is provided into a first end of a conduit so that the product flows toward a second end of the conduit. The conduit may include a first pair of probes attached at a first location and a second pair of probes at a second location. The product's conductivity in the conduit at the first location is monitored using the first set of probes, and the product's conductivity at the second location is monitored using the second set of probes. An marker material is introduced into an entry port of the conduit so that the marker material flows with the product. The marker material's conductivity is different than the product's conductivity. At a first time, the first set of probes detects the conductivity of the product has changed due to the introduction of the marker material, and at a second time, the second set of probes also detects such change.

主权项

1. A method comprising:
providing a product into a first end of a conduit so that the product flows toward a second end of the conduit, wherein the conduit comprises an interior cavity, a first set of probes attached at a first location and a second set of probes at a second location, the first and second locations being separate from each other and being between the first and second ends; monitoring the conductivity of the product flowing in the conduit at the first location using current measured between the first set of probes; monitoring the conductivity of the product flowing in the conduit at the second location using current measured between the second set of probes; introducing a marker material into an entry port so that the marker material flows with the product toward the second end, the marker material comprising a conductivity that is substantially different than the conductivity of the product; detecting, at a first time, that the product conductivity determined at the first set of probes at the first location has changed due to the introduction of the marker material; and detecting, at a second time, that the product conductivity determined at the second set of probes at the second location has changed due to the introduction of the marker material.