One of the most practical takeaways from PTC 19.2 is the definition of a "Test Gauge." These are high-precision instruments (often 0.25% to 0.5% full-scale accuracy) used during performance testing.
You might ask, "We have digital transmitters now; does this old analog standard still matter?" asme ptc 192
By following standardized calibration and installation procedures, you minimize the margin of error in your performance data. Regulatory & Contractual Compliance: One of the most practical takeaways from PTC 19
| Class | Typical Application | Maximum Permissible Uncertainty (95% confidence) | |-------|----------------------|------------------------------------------------------| | | Research & development, code-required performance tests (e.g., heat rate tests) | ±0.1% of reading or better | | Class 2 | Acceptance tests, routine performance monitoring | ±0.25% to ±0.5% of span | | Class 3 | Operational checks, safety, trending | ±1.0% to ±2.0% of span | "We have digital transmitters now
One of the most practical takeaways from PTC 19.2 is the definition of a "Test Gauge." These are high-precision instruments (often 0.25% to 0.5% full-scale accuracy) used during performance testing.
You might ask, "We have digital transmitters now; does this old analog standard still matter?"
By following standardized calibration and installation procedures, you minimize the margin of error in your performance data. Regulatory & Contractual Compliance:
| Class | Typical Application | Maximum Permissible Uncertainty (95% confidence) | |-------|----------------------|------------------------------------------------------| | | Research & development, code-required performance tests (e.g., heat rate tests) | ±0.1% of reading or better | | Class 2 | Acceptance tests, routine performance monitoring | ±0.25% to ±0.5% of span | | Class 3 | Operational checks, safety, trending | ±1.0% to ±2.0% of span |
