发明名称 |
Electro-pneumatic converter |
摘要 |
An electro-pneumatic converter device with modular components and with supporting housing structure enabling the device to be readily convertible from a current to pressure positioner to a current to pressure transducer. A valve positioner with an enclosure having a housing, a modular base, and a separable field terminal box. A self contained cover mounted to the enclosure with no additional mounting components. A plastic pneumatic relay ultrasonically welded together to eliminate metal mounting parts and lower assembly time. Open channels in a housing surface cooperating with a gasket to provide fluid passageways between the housing and the modular base. Pressure gauges are removably mounted on a modular unit for location completely within the housing. A floating interconnect terminal board permits self-aligning of mating terminals as the modular unit is inserted into the housing. A supply biased pneumatic pressure relay has supply pressure channeled to the supply port and also to a supply bias cavity through a capillary hole. |
申请公布号 |
US5439021(A) |
申请公布日期 |
1995.08.08 |
申请号 |
US19930114955 |
申请日期 |
1993.08.31 |
申请人 |
FISHER CONTROLS INTERNATIONAL, INC. |
发明人 |
BURLAGE, BRIAN J.;PAULLER, STEVEN B.;GOOD, STANLEY R.;GAARDER, BARRY L. |
分类号 |
F15B5/00;F15B13/04;G05D3/14;G05D16/20;(IPC1-7):G05B11/50 |
主分类号 |
F15B5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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