发明名称 |
Pneumatic pressure relay |
摘要 |
<p>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 (202), a modular base (206), and a separable field terminal box (204). A self contained cover (208) mounted to the enclosure with no additional mounting components. A plastic pneumatic relay (48) ultrasonically welded together to eliminate metal mounting parts and lower assembly time. Open channels in a housing surface (282) cooperating with a gasket (310) to provide fluid passageways between the housing (202) and the modular base (206). Pressure gauges (264, 266) are removably mounted on a modular unit (206) for location completely within the housing. A floating interconnect terminal board (244) permits self-aligning of mating terminals as the modular unit is inserted into the housing. A supply biased pneumatic pressure relay (48) has supply pressure channeled to the supply port (126) and also to a supply bias cavity (162) through a capilliary hole (164). <IMAGE></p> |
申请公布号 |
EP0833239(A3) |
申请公布日期 |
1998.12.23 |
申请号 |
EP19970119807 |
申请日期 |
1993.09.09 |
申请人 |
FISHER CONTROLS INTERNATIONAL, INC. |
发明人 |
BURLAGE, BRIAN J.;PAULLUS, STEVEN B.;GOOD, STANLEY R.;GAARDER, BARRY LYNN |
分类号 |
F15B5/00;F15B13/04;G05D3/14;G05D16/20;(IPC1-7):G05D16/06 |
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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