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This blog covers the following areas pertaining to instrumentation and control. • Pressure • Flow • Level • Temperature • Neutron Flux • Control Pressure • explain the basic working principle of pressure measuring devices, bourdon tube, bellows, diaphragm, capsule, strain gauge, capacitance capsule; • explain the basic operation of a differential pressure transmitter; • explain the effects of operating environment (pressure, temperature, humidity) on pressure detectors; • state the effect of the following failures or abnormalities: over-pressuring a differential pressure cell or bourdon tube; diaphragm failure in a differential pressure cell; blocked or leaking sensing lines; and loss of loop electrical power. Flow • explain how devices generate a differential pressure signal: orifice, venturi, flow nozzle, elbow, pitot tube, annubar; • explain how each of the following will affect the ind...

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