| Feature | Fixed (PTC 19.2) | Test (Temporary) | |---------|------------------|------------------| | | Annually / bi-annually | Immediately before & after test | | Uncertainty | Typically 0.3% – 0.5% | 0.1% – 0.25% | | Documentation | Maintenance records, drift history | Calibration certificates, traceable to NIST | | Installation cost | Low (already in place) | High (temporary taps, wiring) | | Suitability for acceptance test | Yes, if uncertainty meets code limits | Preferred for high-stakes tests |
Don't leave your test results to chance. Adhering to PTC 19.2 ensures your data stands up to the highest industry scrutiny. asme ptc 192 fixed
Need to validate your existing pressure taps against ASME PTC 19.2? Download our fixed tap inspection checklist (PDF) in the link below. | Feature | Fixed (PTC 19
ASME PTC 19.2 outlines three primary methods for applying pressure to a device under test. The keyword refers specifically to one of these three. Download our fixed tap inspection checklist (PDF) in
Integrate with existing plant data systems to collect real-time performance data from feedwater heaters, including temperatures, pressures, flow rates, and other relevant parameters.
| Component | Typical Value (% of reading) | Notes | |-----------|-------------------------------|-------| | Calibration uncertainty | ±0.1% to ±0.25% | From last calibration certificate | | Long-term drift | ±0.1% per year | Must be included for Fixed systems | | Line loss (dynamic) | ±0.05% | Negligible for non-flowing impulse lines | | Hydrostatic head error | ±0.02% | After applying correction, residual uncertainty remains | | A/D conversion | ±0.01% | For digital systems | | Reference standard error | ±0.02% | If deadweight tester used for calibration |
: Guidance on choosing instrument types (e.g., elastic gauges, transmitters) based on pressure range and accuracy needs.