This lesson identifies and describes the operation of various pressure sensing and measurement devices. • Describe the difference between absolute, gauge, vacuum, and differential pressure • Describe and explain the operation of liquid column manometers, including the following types: – U-tube – Well – Inclined tube • Describe and explain the operation of elastic pressure sensors, including the following types: – Bourdon tube – Bellows – Diaphragm • Explain in detail the construction and operation of a Bourdon tube pressure gauge • Describe the purpose of a pressure switch, pressure transducer, and a d/p cell
