Description The EP-325 accepts a tristate input and converts the contact closure time into proportional branch line pressure. The transducer accumulates the total closure time and uses a pressure sensor to maintain a steady output pressure. That output pressure is equal to the accumulated increase or decrease set point and is independent of system volume or leaks. The EP-325 has a 64-bit pressure resolution and can detect a pulse as small as 0.01 second. In addition, the transducer does not require a refresh pulse and has field-selectable travel times of 0 to 60, 0 to 180, or 0 to 360 seconds.  The EP-325 has a quiet, low-wattage poppet valve, rugged aluminum manifold, brass barb fitting, precision gauge for branch line pressure, and unique steel chassis that substantially reduces its size. These features, along with a liberal two-year warranty, make the EP-325 the highest performing and most reliable tristate to pneumatic transducer in the industry.