Operating Condition Recognition & Threshold Adjustment

Operating Condition Recognition & Threshold Adjustment

Why It Matters:

The enduring popularity of reciprocat­ing compressors is due in part to their flexibility. Their ability to handle differ­ent loads, speeds, volumes, and gases makes them a favorite for operators and a nightmare for failure detection modules in condition monitoring sys­tems. The reason is that varying operat­ing conditions often result in dynamic changes of machine behavior – for example, the vibration fingerprint. Detection of these operating condi­tion changes and the alignment of the threshold setting in parallel can be ex­tremely complex and – if not done prop­erly – will lead to inaccurate results.

The Best Approach:

Operating condition definitions and their corresponding threshold settings can be set manually – but it takes weeks to drill down the entire set of thresholds for
all analyses, for all measured values and for all operating conditions. Look for a monitoring system that performs these adjustments automatically. After a short learning phase, state-of-the-art applica­tions automatically identify changing op­erating conditions – based on trend data of the machine – and precisely adjust all affected threshold settings in real time to avoid false alarms and missed detects.

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