3201 Lecture 2: Bourdon Pressure Gauge 2

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28 Sep 2021
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The gear mechanism is the recipient of the movement from the. Bourdon tube and the linkage, and it is the part that controls the movement of the pointer. Each gear in a pressure gauge gear mechanism is precision-built to move the pointer accurately. The required ansi accuracy rating for a particular pressure gauge ultimately determines how the gear mechanism is designed. Pressure gauges that read finer increments of pressure require more complex gear mechanisms: pointer, dial face, window, and ring. The pointer is the visible part of the pressure gauge you see moving when pressure is being measured. It "reads" measurements as it points to value gradations or increments on the dial face. This part is directly connected to and controlled by the gear mechanism to indicate pressure within the ansi accuracy rating of the gauge. The dial face contains the different pressure measurements.

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