Steam trap monitor with diagnostics and method of monitoring operation of a steam trap

摘要

A steam trap monitor (230) includes a process variable sensor (232) configured to sense a process variable related to operation of a steam trap (100). A memory (238) contains information related to a baseline parameter of the process variable. Diagnostic circuitry (236) calculates a current parameter of the process variable sensed by the process variable sensor (232) and compares the current parameter of the process variable with the baseline parameter. Based on the comparison, the diagnostic circuitry (236) responsively provides a diagnostic output based upon the comparison. The baseline and current parameter are based on a time period during which the steam trap (100) is open or closed.