Specifications

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1.2 Principal of Operation
Unlike conventional positioners, the ICoT Smart Positioner feeds back valve posi-
tion without the need for linkages, levers, or rotary and linear seals. Position sens-
ing is performed totally by non-contacting means, permitting use of advanced
control strategies where knowledge of valve position is used in predictive and other
algorithms. By the integration of multiple components into a singular, cost efficient
unit, microprocessor-based intelligence can now be used to implement advanced
functions such as early warning diagnostics and fugitive emissions monitoring.
The ICoT positioner provides intelligence for the control valve through a micropro-
cessor-based diagnostic system utilizing the HART
®
protocol. Accurate measure-
ment of valve stem position, input signal, actuator pressure and travel time can be
recorded during normal operation, thereby providing information for control valve
signature generation.