scope:

FOREWORD

This manual is based on the accumulated knowledge and experience of engineers in the petroleum industry. Its purpose is to aid in the installation of the more generally used measuring and control instruments and related accessories in order to achieve safe, continuous, accurate, and efficient operation with minimum maintenance. Although the information contained herein has been prepared primarily for petroleum refineries, much of it is applicable without change in chemical plants, gasoline plants, and similar installations.

This third edition of Part II of the manual, represents the latest suggested or generally used practices in the installation of all the devices covered in the second edition plus additional information based on revisions suggested by many individuals and several organizations. (The first edition of the manual was issued in 1960, the second edition in 1965.)

Users of this manual are reminded that in the rapidly advancing field of instrumentation no publication of this type can be complete, nor can any written document be substituted for qualified engineering analysis.

Certain instruments are not covered herein because of their very specialized nature and limited use. When one of these devices (or classes of devices) gains general usage and installation reaches a fair degree of standardization, this manual will be revised to incorporate such additional information.