抄録
Valve positioner in process control is required high reliability and the durability. Because that the operation gives direct influence in a process and the control valve itself being put with severe environment condition. The Spread of Smart Positioner (Valve positioner which carried a microprocessor in electro-pneumatic positioner) was hard compared with Transmitter and Electro-magnetic flow meter. Recentry Smart Positioner becomes use much as a result of having acquired an experience, and Smart of Control valve progresses.
This report is introduces technology and feature of Remote type AVP 3000 Alphaplus which was developed in order to solve a problem in the field.
