What is a torsion tube? What role does it play in the caisson level gauge?

2010-06-07View Original

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What is a torsion tube? What role does it play in the caisson level gauge?

Reply #22011-03-31

Reply to 1# Lai Erwa: The working principle of the float level gauge is that as the liquid level changes, the buoyant force acting on the float submerged in the medium also changes accordingly, which causes the torsion tube to rotate and results in an angular displacement of the shaft. This displacement is then converted by the transduction unit into a pneumatic signal of 20–100 kPa or a DC electrical signal of 4–20 MA.

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