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What is a concentric shield on a probe used for?

April 26, 2017concentric probe Shield Used

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What is a concentric shield on a probe used for?

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A concentric shield on a probe can be used to: (1) Increase the gain of the probe in low dielectric/non-conductive liquid products; (2) Linearize a liquid level signal in a horizontal or non-cylindrical vessel; (3) Provide a ground reference in the process liquid of a non-metal or insulated tank. A concentric shield can only be used in free-running, water-like liquid products. A concentric shield is always the same length as the overall probe length.