Panametrics Sentinel, User Manual, Page: 116 / 166

Chapter 7. Specifications
116 Sentinel™ User’s Manual
7.1.3 Meter Nominal Accuracy (cont.)
Repeatability
±0.2% between 0.1 Qmax and Qmax
±0.4% between Qmin and 0.1 Qmax
Resolution
0.003 ft/s (0.001 m/s)
Velocity Sampling Interval
0.2 sec
Maximum Peak-to-Peak Error
0.4% between 0.1Qmax and Qmax
Zero-Flow Reading
< 0.007 ft/s (2.13 mm/s) for each acoustic path
< 0.01 ft/s (3.05 mm/s) composite for all paths
Error due to upstream disturbances
±0.3% in addition to nominal error
Note: Accuracy can be improved with High Pressure NG flow calibration
7.1.4 Flow Velocity Range
For pipe size 4" to 10” (15 cm to 25 cm)
Maximum actual measurable velocity: ±118 ft/s (±36 m/s)
Minimum actual measurable velocity: ±2.4 ft/s (±0.72 m/s)
Transitional flow velocity: 11.8 ft/s (3.6 m/s)
For pipe size 12" to 24" (30 cm to 61 cm)
Maximum actual measurable velocity: ±88.6 ft/s (±27 m/s)
Minimum actual measurable velocity: ±1.48 ft/s (±0.45 m/s)
Transitional flow velocity: 8.86 ft/s (2.7 m/s)