Saturday, January 20, 2018

Bourdon Tube Pressure Gauge Manufacture



Even with the forward march of technology in process measurement, some methods in use for many years maintain their popularity due to performance, ruggedness, or simplicity that can be attractive for many applications. Mechanical pressure gauges certainly fall in that group.

Mechanical pressure gauges employing Bourdon tubes are found throughout industrial process control operations. They provide accurate and immediate indication of the pressure at their connection point, without the need for external power. It can be useful to see and understand how instruments are built and upon what principles they operate. The video included with this post shows the process.

Bourdon tube gauges rely on the principle that a flattened and bent tube will straighten and regain its circular cross section, to some predictable and repeatable degree, in response to an increase in the pressure of a fluid inside the tube. You can see it happen in the video. The balance of the gauge is a case, a face, and mechanical linkage to transfer the Bourdon tube motion into rotation of the indicator needle on the instrument face.

Watch the video. It's informative and well done. Wika, a globally recognized manufacturer of temperature, pressure, and level measurement instrumentation, produced the video at their manufacturing facility. Share your process instrumentation challenges and requirements with a process measurement specialist, leveraging your own knowledge and experience with their product knowledge and application expertise.