ELECTRO-KINETIC PRESSURE/FLOW SENSOR

摘要

A transmitter (10) senses flow of a process fluid in a process pipe. The process pipe (20) may include a flow restrictor (22) positioned therein that carries a primary flow of a process fluid. Impulse piping (30) is configured to carry a secondary flow of the process fluid from an upstream side of the flow restrictor to a downstream side. An electro-kinetic element (12) is positioned within the impulse piping (30) and is configured to generate an electro-kinetic potential related to the primary flow. Measurement circuitry in the transmitter (10) is configured to measure the electro-kinetic potential across the electro-kinetic element (12) and relate the electro-kinetic potential to the flow of process fluid through the process pipe (20).