Panametrics PT878GC, Инструкция по эксплуатации

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Chapter 11.
182 TransPort™ PT878GC User’s Manual
11.1.1 Operation and Performance
11.1.1.1 Fluid Types
Acoustically conductive gases with minimum density requirements. See Table 4, Table 5 and Table 6.
11.1.1.2 Pipe Sizes
0.75 to 12 in. (20 to 300 mm) with PT878GC-01 electronics
4 to 24 in. (100 to 610 mm) with PT878GC-02 electronics
11.1.1.3 Pipe Wall Thickness
See Table See Table 4, Table 5 and Table 6.
11.1.1.4 Pipe Materials
All unlined metals and plastics; no lined pipes.
11.1.1.5 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.
11.1.1.6 Repeatability
±0.2 to 0.5% of reading
11.1.1.7 Range (Bidirectional)
See Table See Table 4, Table 5 and Table 6.
11.1.1.8 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
5 ft/s (1.5 m/s). Pipes 2 in. (50 mm) or less require a minimum of 10 ft (3 m) of continuous straight run
without flanges, welds or coupling joints.
11.1.1.9 Pressure Requirements, Air, Nitrogen, Oxygen, Argon
See Table 4.
11.1.1.10 Pressure Requirements, Natural Gas
See Table 5.
11.1.1.11 Pressure Requirements, Steam
See Table 6.
11.1.1.12 Pressure Requirements, Other Gases
Dependent upon gas composition, and pipe size and material. Consult Panametrics Sensing.
11.1.1.13 Measurement Parameters
Standard and actual volumetric flow, flow velocity and mass flow.