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Overview of Calcualtions: SR - NO. 1 RULE-1 Quantitative Criteria

This document outlines rules for thermowell selection and fluid property collection. Rule 1 specifies quantitative criteria for thermowell resonance frequency, dynamic stress limits, static stress limits, and hydrostatic pressure limits. Rule 2 indicates that the following fluid properties should be collected: operating pressure, operating temperature, process fluid velocity, specific volume, dynamic fluid viscosity, kinematic fluid viscosity, and fluid density.

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Susheel Wankhede
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35 views1 page

Overview of Calcualtions: SR - NO. 1 RULE-1 Quantitative Criteria

This document outlines rules for thermowell selection and fluid property collection. Rule 1 specifies quantitative criteria for thermowell resonance frequency, dynamic stress limits, static stress limits, and hydrostatic pressure limits. Rule 2 indicates that the following fluid properties should be collected: operating pressure, operating temperature, process fluid velocity, specific volume, dynamic fluid viscosity, kinematic fluid viscosity, and fluid density.

Uploaded by

Susheel Wankhede
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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OVERVIEW

SR.NO.      
1 RULE-1 QUANTITATIVE CRITERIA  
a R1-1 Frequency Limit. The resonance frequency of the thermowell shall be s
b R1-2 Dynamic Stress Limit. The maximum primary dynamic stress shall not excee
c R1-3 Static Stress Limit. The maximum steady-state stress on the thermowell
d R1-4 Hydrostatic Pressure Limit. The external pressure shall not exceed the pressure ra
e R1-4 In addition, the suitability of the thermowell material for the process environment (section 5)
2 RULE-2 FLUID PROPERTIES COLLECT THE FOLLOWING FLUID PROPERTIES
    SYMBOL PARAMETERS
1   P operating pressure, Pa (psi)
2   T operating temperature, °C (°F)
3   V process-fluid velocity, m/s (in./sec)
4   v specific volume (reciprocal of the fluid density ρ),m3/
5   μ dynamic fluid viscosity, Pa⋅s (lbf⋅sec/ft2),
6   ν kinematic fluid viscosity, m2/s (ft2/sec)
7   ρ fluid density, kg/m3 (lb/in.3)

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