Open AccessCurrent to Pressure Transducers for the Argon & Nitrogen Dewars
Author(s) -
T.J. Serges
Publication year - 1988
Language(s) - English
Resource type - Reports
DOI - 10.2172/1031176
Subject(s) - transducer , signal (programming language) , actuator , piping , argon , nitrogen , controller (irrigation) , acoustics , electrical engineering , engineering , chemistry , computer science , mechanical engineering , physics , agronomy , organic chemistry , biology , programming language
A current to pressure (I/P) transducer will be used in the D-Zero piping system. The transducer is necessary to precisely control the control valve positioners located at the argon and nitrogen dewars. A 4-20 rnA signal will come from the PLC function of the TI565. This electric signal must be converted by the transducer to a pneumatic signal of 3-15 psi which will position the actuator. By doing this, the valve can be opened or closed to any adjusted amount from the control room or a remote I/P controller. A total of 9 transducers will be used at the dewars. The nitrogen dewar will have 3 that are located outside and will have to be weatherproof. The argon dewar will have 6, located inside, that will have to be explosion proof or intrinsically safe