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Plugged Line Detection
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Impulse lines can fill with solid material or freeze in cold environments due to heat trace failures. Plugging in one or both impulse lines will cause an on-scale failure because the transmitter output will appear to be normal (i.e. mean remains unchanged). The patented SPM diagnostics can proactively detect this abnormal condition through a significant change in standard deviation.
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Fluid Composition Change
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Unexpected liquids in gas flow can cause an over-reading of the DP flow value or wear in downstream components. Unexpected aeration in liquids can cause measurement errors and may impact product quality. In each of these cases, operators may notice a small change in the mean (process variable). However, the SPM diagnostics detect a significant change in standard deviation, signaling an abnormal condition.
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The new ASP™ Diagnostics Suite for HART® protocol,
embedded in the 3051S Series, provides users with new process
insight to prevent abnormal situations and increase plant
productivity. These advanced diagnostics come to life on the
new enhanced EDDL-based graphical interface.
Perform statistical analysis on the process signature