Multi-orifice plate carrier and fitting with positioner, differential selector and horizontal adjusting bar

A multi-orifice plate fitting and plate positioning apparatus for mounting in a pipe and measuring the pressure of fluid flowing in the pipe, said apparatus comprising a housing having a hollow interior and a flow path for accommodating the fluid;

• a multi-orifice plate having at least two spaced orifices, said multi-orifice plate adjustably and substantially vertically oriented in said hollow interior, with a selected one of said orifices disposed in the flow path of the fluid for defining a high pressure side and a low pressure side in the fluid on each side of said one of said orifices;
• differential pressure selector means provided in pressure-sensing communication with the fluid on each side of said one of said orifices, for sensing a pressure change across said one of said orifices;
• plate piston means carried by said housing means in engagement with said multi-orifice plate, said plate piston means provided in pressure-operating communication with said differential pressure selector means;
• and a horizontal adjusting bar slidably and horizontally disposed in said housing means, said horizontal adjusting bar engaging said plate piston means, whereby said multi-orifice plate is shifted vertically in said housing means to selectively locate said orifices in the path of the fluid, responsive to said pressure change across said one of said orifices and operation of said differential pressure selector means and said plate piston means, and said multi-orifice plate is selectively horizontally shifted in said housing means to horizontally align said orifices in the path of the fluid.

A multi-orifice plate fitting and plate positioning apparatus for mounting in a pipeline and measuring the pressure of fluid flowing in the pipeline, said apparatus comprising a split housing having a hollow interior and a flow path for accommodating the fluid;

• a multi-orifice plate having at least two spaced orifices, said multi-orifice plate removably and vertically and horizontally adjustably located in said hollow interior, with one of said orifices transversely disposed in said flow path of the fluid for defining a high pressure upstream side and a low pressure downstream side in the fluid on each side of said one of said orifices;
• differential pressure selector means provided in pressure-sensing communication with the fluid on the high pressure upstream side of said one of said orifices and the low pressure downstream side of said one of said orifices, for sensing a pressure change across said one of said orifices;
• plate piston means carried by said split housing in engagement with said multi-orifice plate and provided in pressure-operating communication with said differential pressure selector means;
• and a horizontal adjusting bar slidably disposed in horizontal orientation in said split housing below said flow path of the fluid, said adjusting bar engaging said plate piston means, whereby said multi-orifice plate is vertically shifted in said hollow interior of said split housing to locate the other of said orifices in the path of the fluid, responsive to said pressure change and operation of said differential pressure selector means and said plate piston means and said multi-orifice plate is horizontally shifted in the housing responsive to manual horizontal adjustment of said horizontal adjusting bar.