Measurement Uncertainty: flow_turbine_meter
GUM-compliant measurement uncertainty budget components and coverage factors for common engineering measurements. Covers Type A (statistical) and Type B (non-statistical) uncertainty sources with standard uncertainties, expanded uncertainties at k=2 (95%), and confidence levels for: length/dimension (caliper, micrometer, CMM, gauge block), mass (analytical balance, platform scale), temperature (Type K thermocouple, Pt100 RTD, IR pyrometer), pressure (Bourdon gauge, electronic transducer, liquid manometer), flow (orifice plate, turbine meter, Coriolis, ultrasonic transit-time), electrical (DMM, power analyzer), force (load cell), and torque (torque wrench). Also includes coverage factor reference rows (k=1/2/3, 68/95/99.7%) and distribution divisors (rectangular, triangular, normal, U-shaped). Per ISO/IEC Guide 98-3:2008 (GUM), NIST TN 1297, ISO/IEC 17025:2017.
| measurement type | uncertainty source | confidence level pct (%) | coverage factor k | distribution | divisor | expanded uncertainty k2 | expanded uncertainty unit | notes | standard uncertainty unit | standard uncertainty value | uncertainty type |
|---|---|---|---|---|---|---|---|---|---|---|---|
| flow_turbine_meter | calibration_factor | 95 | 2 | normal | 2 | 0.5 | pct_flow | Turbine meter K-factor calibration uncertainty; typical linearity +/-0.15% over 10:1 range; cal at flow lab U95 = 0.5% | pct_flow | 0.25 | Type_B |
| flow_turbine_meter | combined_standard_uncertainty | 95 | 2 | normal | 1 | 0.66 | pct_flow | RSS: sqrt(0.25^2+0.20^2+0.05^2) = 0.323% flow; U95 = 0.65% flow; turbine meters among most accurate for clean low-viscosity fluids | pct_flow | 0.33 | Combined |
| flow_turbine_meter | repeatability | 95 | 2 | normal | 1 | 0.1 | pct_flow | Turbine meter repeatability typically 0.05-0.10% of reading; excellent short-term repeatability | pct_flow | 0.05 | Type_A |
This is a sample. Search the full measurement uncertainty dataset and 300+ more by creating a free account and accessing the database.
Get started for FREE