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An Introduction to ISO 15926 November 2011 - iRINGToday

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Seal Flush<br />

Pressure: 1034<br />

Pressure Units: kPa<br />

You still have questions, so you continue <strong>to</strong> back up.<br />

Tag No: P-101<br />

Service: Chemical Injection <strong>to</strong> D-101<br />

Seal Flush<br />

Pressure: 1034<br />

Pressure Units: kPa<br />

Now you are getting a clearer picture. When you “back all the way up” and read the entire<br />

data sheet you can finally put the initial value, 1034, in<strong>to</strong> context.<br />

Centrifugal Pump Data Sheet<br />

Client: ABC Chemical Company<br />

Tag No: P-101<br />

Service: Chemical Injection <strong>to</strong> D-101<br />

Seal Flush<br />

Pressure: 1034<br />

Pressure Units: kPa<br />

Even with such a trivial example, without context we are lost. Experienced engineers may<br />

exclaim at this point “But this is the way design is done. You have <strong>to</strong> consider the entire data<br />

sheet <strong>to</strong> understand a particular term!” That is the point: If we want <strong>to</strong> use machines <strong>to</strong> transfer<br />

information <strong>to</strong> other machines, we want the information <strong>to</strong> be self-describing.<br />

CHAPTER 1<br />

16

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