This section dictates the accuracy required for thermocouples, pressure transducers, and fuel flow meters. A blurred table of tolerances can lead to selecting the wrong sensor and invalidating your test.
: For new installations, particularly "wire-to-air" blower systems, ASME PTC 13 is now the preferred standard as it incorporates modern advancements that PTC 9 did not address. If you're looking to purchase this standard, Displacement Compressors Vacuum Pumps and Blowers | 1970 asme ptc 9 pdf best
(reaffirmed in 1979) and is now maintained for historical reference only. particularly "wire-to-air" blower systems
When applying PTC 9 or similar displacement compressor standards, engineers follow these core guiding principles: Uniform Conditions: asme ptc 9 pdf best