If you simply look at the panel mounted gauge in the control room, 100 feet away from the condenser, your error might be ±0.5 psi. That is ten times too high. Why?
Random variations in measurements.
A performance test verifies whether multimillion-dollar machinery meets its contractually guaranteed operational efficiency. When auditing a combined-cycle power block, an industrial boiler, or a large steam surface condenser under ASME PTC 12.2 , even tiny errors in pressure data will skew the calculated efficiency. asme ptc 192
Around hour three the numbers started to drift. A channel showed a slow rise in thermal resistance. Nadia frowned. She checked the auxiliary logs: the cooling loop pump had a micro-pulse in RPM an hour earlier. The manual insisted on full documentation for any deviation; the options were rerun, note as anomaly, or abort and recalibrate.
One of the most nuanced aspects of PTC 192 is distinguishing between correctable degradation and non-correctable wear. If you simply look at the panel mounted
You're referring to the ASME PTC 19.2 standard!
The ASME PTC 19 series is a collection of documents that serve as the foundational guides for measurement techniques. While other PTCs (like PTC 6 for steam turbines or PTC 22 for gas turbines) focus on specific equipment, the PTC 19 series provides the standardized methods for obtaining the raw test data itself. These documents are crucial because the accuracy of any performance test is fundamentally limited by the accuracy of the underlying measurements. Random variations in measurements
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Pressure Measurement - PTC 19.2 - ASME
The standard outlines reporting formats that include:
While most engineers know that pressure needs to be measured, PTC 19.2 tells you how to measure it with a defined, auditable uncertainty.