Continuous Process: Field Devices: Level and Flow

Define the following terms: level point level measurement continuous level measurement direct level measurement and indirect level measurement. Identify common examples of point continuous direct and indirect level measurement devices. Identify factors that determine the type of level measurement device used for a particular application. Define the following terms: density specific gravity and hydrostatic pressure. Describe how pressure gauges differential pressure transmitters bubblers and displacers provide level measurements. Describe common applications and limitations associated with pressure gauges differential pressure transmitters bubblers and displacers. Describe factors that must be considered during the configuration of pressure gauges differential pressure transmitters bubblers and displacers. Describe how capacitance or radio frequency (RF) devices and conductance devices measure level. Describe common applications and limitations associated with capacitance and conductance devices. Describe factors that must be considered during the configuration of capacitance and conductance devices. Describe how radar ultrasonic laser and nuclear level measurement devices work. Describe common applications and limitations associated with radar ultrasonic laser and nuclear level measurement devices. Describe how tuning fork sensors and weight devices provide level measurements. Describe common applications and limitations associated with tuning fork sensors and weight devices. Describe how differential pressure flow meters provide flow measurements. Identify common primary flow elements that are used in differential pressure measurement. Describe common problems that can affect the operation of differential pressure flow meters. Describe how positive displacement flow meters measure flow. Describe how turbine flow meters measure flow. Describe applications and limitations associated with positive displacement flow meters and turbine flow meters. Describe how magnetic vortex and ultrasonic flow meters measure flow. Describe applications and limitations associated with magnetic vortex and ultrasonic flow meters. Describe how Coriolis flow meters and thermal flow meters work. Describe applications limitations and installation considerations for Coriolis flow meters and thermal flow meters.