| 摘要 |
PROBLEM TO BE SOLVED: To realize a valve positioner capable of precisely controlling opening of a valve, by realizing an electropneumatic conversion module (an I/P module) for restraining a variation in a gain characteristic. SOLUTION: In this electropneumatic conversion module for arranging a pole piece part in a part of a housing, the pole piece part is constituted so that an installation position can be adjusted to the housing. COPYRIGHT: (C)2010,JPO&INPIT
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