Patent ID: 6499876
Filing Date: 2002-12-31
Classification: G01N

Abstract:
A method of operating a pipework system, the method including monitoring soil build-up in the pipework system using a monitoring apparatus for monitoring soil build-up in a conduit through which fluid may flow, the monitoring apparatus comprising a body located outside of and in thermal connection with the conduit, such that heat can flow between the body and the fluid flow; a heat controlling means to regulate the temperature of the body; a monitor capable of monitoring any change in power input to the heat controlling means necessary to maintain the body at the regulated temperature, whereby the change in power input to the heat controlling means is indicative of a change in heat flux between the fluid flow and the body, thereby indicating a change in soil build-up, said method comprising the steps of measuring the power input required to maintain the body at a desired temperature, and calculating the heat flux between the fluid flow and the body using the power input.