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Power Plant Instrumentation and Control Handbook by Ajay Kumar Debnath, Swapan Basu

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2. Pressure Measurement: Various Measuring Points and Range Selection

Initial introduction of pressure measurements are already incorporated in Clause 1 and Chapter I, Clauses 3.1 and 3.2. Various measuring points in the power plant (typical value of a 250 MW plant) are given in Table IV/2-1 along with the operating/maximum continuous rating (MCR) value and instrument ranges. Normally the calibrated ranges are selected so that the operating or MCR value is ∼67 % of the full range. But there may be some cases where the operating or MCR value is closer to the calibrated range, for example, the control range of an instrument.

2.1. Pressure Transmitter: Working Principle, Specification, Supplier, and Special Features

Pressure transmitters are devices ...

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