Flow DetectorsOBJECTIVESTERMINAL OBJECTIVE1.0 Given a flow instrument, RELATE the associated fundamental principles, includingpossible failure modes, to that instrument.ENABLING OBJECTIVES1.1EXPLAIN the theory of operation of a basic head flow meter.1.2DESCRIBE the basic construction of the following types of head flow detectors:a. Orifice platesb. Venturi tubec. Dall flow tubed. Pitot tube1.3DESCRIBE the following types of mechanical flow detectors, including the basicconstruction and theory of operation.a. Rotameterb. Nutating Disk1.4DESCRIBE density compensation of a steam flow instrument to include the reasondensity compensation is required and the parameters used.1.5 Given a block diagram of a typical flow detection device, STATE the purpose of thefollowing blocks:a. Differential pressure (DP) transmitterb. Extractorc. Indicator1.6STATE the three environmental concerns which can affect the accuracy and reliabilityof flow sensing instrumentation.Rev. 0 Page v IC-04
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