ASME PTC 1974 - Intergraph Smart Instrumentation - Reference - Hexagon

Intergraph Smart Instrumentation Sizing Equations
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Intergraph Smart Instrumentation
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Reference
Smart Instrumentation Version
13.1

  1. Define initial value of ASME PTC 1974 1 constant.

    ASME PTC 1974_1a

  2. Calculate Ratio of Frequency at Fluid Temperature to Frequency at 70 °F:

  3. Calculate Maximum Thermowell Length Based on Vibration Limitation:

  4. Define ASME PTC 1974 1 Constant:

    ASME PTC 1974_4 part1

    ASME PTC 1974_4 part3

  6. Calculate natural frequency for L=L1:

    ASME PTC 1974_6

  7. Calculate wake frequency:

    ASME PTC 1974_7

  8. Calculate magnification factor for ASME PTC 1974_8

  9. ASME PTC 1974_9

  10. Calculate Maximum Allowable Static Gage Pressure

  11. Calculate maximum thermowell length based on steady state stress consideration.

    ASME PTC 1974_11