I/P and E/P transducers are used to regulate air pressure in many different types of processes and equipment. The very basic use for an electro-pneumatic transducer is to convert an electronic signal into a correlating output pressure (I/P-Current to Pressure or E/P-Voltage to Pressure). Some of the topics covered are how performance and output are affected by media, actuator type, supply pressure, and transducer orientation. Other topics such as how to calibrate and trouble shoot these are units are covered as well. The following white paper can be used as a reference for basic I/P pressure transducer operation, build and terminology.