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Device responsive to fluid leakage flows within a range from above a predetermined minimum to below a predetermined maximum and nonresponsive to fluid flows beyond said range
Device responsive to fluid leakage flows within a range from above a predetermined minimum to below a predetermined maximum and nonresponsive to fluid flows beyond said range
A flow sensor is provided responsive to fluid leakage flows within a range from above a predetermined minimum to below a predetermined maximum, to indicate that leakage flow is within that range and/or that maximum leakage flow has been exceeded, but nonresponsive to fluid flows below the predetermined minimum or above the predetermined maximum, to avoid giving a false indication of fluid leakage flow, comprising a flow responsive valve and a differential pressure indicator sensing differential pressure between fluid leakage flow and normal fluid flow at the valve.
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