Heat transfer monitoring/measuring device
AssigneeIfm Electronic GmbH
InventorsPeter Buhl, Walter Reichart
Life of this patent
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Abstract
A heat transfer monitoring and/or measuring device, especially a flow indicator for media flowing through a pipe (1), tank or fitting, with a sensor housing (2) and with two sensor elements (3, 4), the sensor elements (3, 4) each having a metallic sensor surface (5) which comes into contact with the flowing medium. In the flow indicator, the problem “deposition or formation” of disruptive layers on the sensor surfaces (5) of the sensor elements (3, 4) is solved by the element (3) which is made as a heating element having an electrically conductive protective lead (6) and by the protective lead (6) forming a closed protective circuit which includes the pipe (1), tank, or the fitting, the flowing medium and the sensor element (3).
Claims23
Heat transfer monitoring and measuring device comprising a sensor housing and at least a first sensor element assembled with the sensor housing such that the sensor element has a metallic sensor surface arranged for contacting a flowable medium in one of a pipe, a tank and a fitting;
- wherein the sensor element is electrically connected to an electrically conductive protective lead;
- and wherein the protective lead forms part of a closed protective circuit which includes said one of the pipe, tank, and fitting, the flowable medium and the first sensor element.
Dependencies are inferred from the claim text.