Current-to-pressure I/P Transducers convert an electrical signal, typically an analog signal ranging from 4 to 20 milliamps, to a pneumatic or pressurized air signal, set in ranges from 3 to 15 pounds per square inch gauge, 6 to 30 psig, or other flow rates relative to the pressure at sea level. For industrial applications that require a fast-acting process, the I/P transducer will be used in combination with a pneumatic positioner.
Electro-pneumatic transducers convert a current or voltage input into proportional output pressure. They are often paired with valves, pneumatic relays, and flow regulators in process control applications. Electro-pneumatic (also known as E/P or I/P) transducers typically accept a standard current loop, often 4-20 mA, or a 0-5V or 0-10V voltage signal.