GE PT878GC Instrukcja Użytkownika Strona 263

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April 2004
11-2 Specifications
Operation and Performance
Fluid Types
Acoustically conductive gases with minimum density
requirements. See Table 3-1 on page 3-4.
Pipe Sizes
4 to 24 in. (101.6 to 609.6 mm) and larger. (Consult GE
Panametrics.)
Pipe Wall Thickness
See Table 3-1 on page 3-4.
Pipe Materials
All unlined metals and plastics; no lined pipes.
Clamp-On Flow Accuracy (Velocity)
For pipes 6 in. (150 mm) and smaller: ±2% to 5% of reading
typical
For pipes over 6 in. (150 mm): ±1% to 2% of reading typical
Note: Accuracy depends on pipe size and whether measurement
is one-path or two-path. Accuracy to ±0.5% of reading
may be achievable with process calibration.
Repeatability
± 0.2 to 0.5% of reading
Range (Bidirectional)
See Table 3-1 on page 3-4.
Rangeability (Overall)
150:1
Note: Specifications assume a fully developed flow profile
(typically 20 diameters upstream/10 diameters
downstream straight run) and flow velocity greater than
6 ft/s (1.83 m/s).
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